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Analysis of China’s Rice Industry Situation in 2025 and Outlook for 2026 XU Chunchun, JI Long, CHEN Zhongdu, SUN Yiying, LI Dan, FANG Fuping China Rice    2026, 32 (2): 19-22.   DOI: 10.3969/j.issn.1006-8082.2026.02.004 Abstract （1442）   HTML （241）    PDF（pc） （550KB）（569）       Knowledge map    Save In 2025, China’s rice planting area saw a slight increase, while the per-unit yield reached another historic high, with total output remaining above 200 million tonnes for 15 consecutive years. Domestically, rice prices trended weakly overall, while rice consumption remained generally stable. The scale of rice imports and exports expanded significantly, with the structure of trading partner countries largely unchanged. The number of certified varieties increased slightly, and the proportion of high-quality varieties continued to rise. The transformation of rice production methods accelerated, with steady improvements in organization, mechanization, and intelligentization levels. Looking ahead to 2026, it is expected that the rice planting area will remain stable, per-unit yield will continue to rise steadily, the rice market will operate more smoothly, and brand development will be further upgraded. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Effects of Combined Application of Jinggangmycin and Nano-Silicon Fertilzer on Photosynthetic Characteristics, Defense Enzyme Activities, and Control Efficacy Against Rice Sheath Blight GUO Jinquan, ZHOU Youjun China Rice    2026, 32 (1): 64-69.   DOI: 10.3969/j.issn.1006-8082.2026.01.011 Abstract （1392）   HTML （677）    PDF（pc） （850KB）（630）       Knowledge map    Save The development of environmentally friendly disease prevention and control technology is conducive to the healthy and sustainable development of rice industry. To clarify the control efficacy of combined application of jinggangmycin and nano-silicon fertilizer against rice sheath blight, as well as its effects on photosynthetic characteristics and defense enzyme activities in rice, an experiment was conducted using the rice cultivar Yexiangyou 669 as the test material, aiming to screen for the optimal combined application scheme. The results showed that, compared to the control (CK, sprayed with an equal volume of sterile water), the combined application of jinggangmycin and nano-silicon fertilizer significantly enhanced the photosynthetic characteristics of rice. Among all treatments, the T3 treatment (spraying 5% validamycin A wettable powder 125 g+nano-silicon fertilizer 700 mL) demonstrated the best performance. Under this treatment condition, the total chlorophyII content, the net photosynthetic rate, stomatal conductance, intercellular CO2 concentration and transpiration rate of rice were 4.69 mg/g, 14.9 μmol/（m2·s）, 0.47μmol/（m2·s）, 268.7 μmol/mol and 5.3 mmol/（m2·s） respectively. Chlorophyll fluorescence parameters, including potential photochemical efficiency (Fv/Fo), maximum photochemical efficiency of PSII (Fv/Fm), photochemical quenching coefficient (qP), and non-photochemical quenching coefficient (NPQ), were significantly higher than those in other treatments. The activities of antioxidant defense enzymes, such as superoxide dismutase (SOD), peroxidase (POD), polyphenol oxidase (PPO), and phenylalanine ammonia-lyase (PAL), reached their highest values, with specific activities of 513.3, 875.1, 117.7, and 47.9 U/(g·h), respectively. Meanwhile, under this treatment condition, the disease index and control effect of rice were 2.18 and 76.2 %, respectively, and the prevention and control of rice sheath blight reached the best effect. In conclusion, the T3 treatment improved chlorophyll content, photosynthetic characteristics, and chlorophyll fluorescence parameters in rice, activated antioxidant defense enzymes, and demonstrated excellent control efficacy against rice sheath blight. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Quality Analysis of Leading Rice Varieties in Major Production Areas of China HU Xianqiao, LU Lin, FU Yuanmiao, JIANG Huiping, SHAN Yue, CHEN Mingxue, DING Liqun China Rice    2025, 31 (6): 12-19.   DOI: 10.3969/j.issn.1006-8082.2025.06.004 Abstract （1351）   HTML （1185）    PDF（pc） （921KB）（2023）       Knowledge map    Save To comprehensively and scientifically understand the quality status of the leading rice varieties in China, this study collected 72 rice samples that were predominantly cultivated in 14 provinces in 2023. It analyzed and compared the differences in processing quality, appearance quality, cooking and eating quality, pasting characteristics, and nutritional quality among Northeastern japonica, Southern japonica, Yangtze River Basin indica, Southeastern Coastal indica, and Southeastern Coastal early indica rice. Northeastern japonica rice were dominated by short-grain and medium-grain varieties, Southern japonica rice were dominated by short-grain varieties, Yangtze River Basin indica rice and Southeast Coastal indica rice were dominated by long-grain varieties, and Southeast Coastal early indica rice were all medium-grain varieties. The processing quality of japonica rice was significantly better than that of indica rice, and better than that of early indica rice. Northeastern japonica rice, Southeast Coastal indica rice and Yangtze River Basin indica rice had good appearance quality, while Southeast Coastal Early indica rice and Southern japonica rice had high chalkiness, poor transparency, and relatively poor appearance quality. Except for Southeast Coastal early indica rice, other types of leading varieties had good cooking and eating quality, with a high quality rate of more than 90.0%. Southeast Coastal early indica rice had high amylose content, met the requirements of special rice for rice noodles, and had good processing use. Compared with indica rice, japonica rice had lower cool gel viscosity, breakdown viscosity, and consistency viscosity, indicating that the cooked rice would be softer, more elastic and chewy, and the texture of cold rice was softer. Compared with the Northeastern japonica rice, the Southern japonica rice had lower cool gel viscosity, setback value viscosity and consistency viscosity, and higher breakdown viscosity, indicating that the cooked rice would be softer and more viscous, but less elastic than that of Northeastern japonica rice, and the texture of cold rice would be softer; the Southeastern Coastal early indica rice possessed the highest peak viscosity, hot viscosity, cool viscosity, setback viscosity and consistency viscosity, and lowest breakdown viscosity, indicating that it had a firm and coarse texture of cooked rice and hard texture of cold rice, but contained starch resistant to degradation, making it highly suitable for processing into products such as rice noodles; no significant difference was observed in the pasting characteristics between Yangtze River Basin indica rice and the Southeast Coastal indica rice. Overall, all the leading rice varieties showed excellent cooking edible quality or processing quality. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Integration and Innovation of High-Quality and High-Yield Rice Cultivation Technology in the Hilly Regions of Southwest China——Zizhong, Sichuan for Example CHEN Liang, CHEN Yong, YUAN Chi, CAO Houming, LUO Tao China Rice    2026, 32 (1): 6-11.   DOI: 10.3969/j.issn.1006-8082.2026.01.002 Abstract （1324）   HTML （1167）    PDF（pc） （937KB）（434）       Knowledge map    Save Zizhong County is a representative area for rice production in the hilly regions of Sichuan Province. Through years of technological integration and innovation, it has achieved a significant increase in rice yield per unit area. This paper systematically reviews the high-quality and high-yield rice cultivation technology system in Zizhong County, with a focus on key aspects such as variety selection, dry nursery seedling technology, “Dasanwei” intensive cultivation, scientific fertilization and irrigation, integrated pest management, and the “Five-Excellent Factors” integration model. It further examines the challenges faced in the process of technological integration and innovation, including high initial costs hindering large-scale adoption, uneven application and implementation rates of technologies, ecological risks arising from long-term monoculture, resource constraints and insufficient exploitation of potential. On this basis, the study proposes development strategies such as promoting the simplification and smart upgrading of technologies, advancing ecological and green low-carbon transformation, enhancing industrial integration and value chain development, and innovating management systems and service mechanisms. The technological practices in Zizhong County offer a replicable pathway for high-yield and high-quality rice cultivation in the hilly areas of Southern China, holding practical significance for ensuring regional food security. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Rice Variety Selection and Key Techniques for Shrimp-Rice Co-cultivation XU Jianhua, GUO Jing China Rice    2025, 31 (6): 113-116.   DOI: 10.3969/j.issn.1006-8082.2025.06.017 Abstract （1294）   HTML （155）    PDF（pc） （417KB）（388）       Knowledge map    Save In 2024, we conducted screening trials on 24 rice varieties under the shrimp-rice co-cultivation model, focusing on evaluating the growth duration, yield, and resistance performance of each variety. The results showed that the unit yield of the tested varieties ranged from 421.6 to 696.7 kg/667 m2, and the growth duration ranged from 108 to 136 days. Overall, the tested varieties exhibited good performance in terms of lodging resistance and disease resistance. After a comprehensive consideration of the yield, growth duration, and resistance performance of each variety, we believe that Quanliangyou 607, with its high yield but relatively long growth duration, is suitable for early planting under the local shrimp-rice co-cultivation model; while Hualiangyou 919, Bangliangyou 6118, and Wanliangyou 88, which have relatively high yields and shorter growth durations and show excellent overall performance, are suitable for planting as post-shrimp-harvest rice; and Xiadao 1, with the shortest growth duration, is suitable for planting in areas with special requirements for growth duration. The findings of this study hold significant reference value for the variety layout and promotion of rice under the shrimp-rice co-cultivation model in Xiantao City. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Screening and Evaluation of Mechanically Harvested Ratoon Rice Varieties in Jiangxi Province ZHANG Meiwei, PAN Junfeng, SUN Hua, WU Xiaofei, YANG Yuchun, HU Yifan, XIA Li, SONG Hongbin, YU Xiaoyun, DENG Zhibin, XIA Jing China Rice    2025, 31 (6): 66-71.   DOI: 10.3969/j.issn.1006-8082.2025.06.010 Abstract （1251）   HTML （151）    PDF（pc） （871KB）（511）       Knowledge map    Save To identify high-yielding ratoon rice varieties suitable for mechanized production in Jiangxi Province, a field trial was conducted in 2024 at the Yujiang Experimental Base of the Jiangxi Institute of Red Soil and Germplasm Resources. The growth period, yield potential, regeneration power, and mechanical rolling resistance of 13 rice varieties were systematically evaluated. The results indicated that: (1) the total growth period of the main crop ranged from 134 to 139 days, with the ratoon crop lasting 69 to 80 days, resulting in a combined growing period of 206 to 215 days; (2) the main crop yields were 362.8-574.9 kg/667 m2, ratoon crop yields were 222.9-450.3 kg/667 m2, and total two-season yields 621.3-974.9 kg/667 m2; (3) the regeneration force coefficient ranged from 0.54 to 1.09, and the mechanical rolling resistance ranged from 1.3% to 40.6%. A comprehensive evaluation revealed that Weiliangyou 8612 exhibited high total yield, strong regeneration power, and good performance in mechanical rolling resistance, making it well-suited for widespread mechanized ratoon rice cultivation. Hangliangyou 1378, Hanliangyou 8208, and Hanyou 3015 demonstrated strong regeneration power and good performance in mechanical rolling resistance but relatively lower yields, whereas Yongyou 4949, Chenliangyou Feizhan, and Weiliangyou 7713 achieved higher yields but weaker mechanical rolling resistance, so the cultivation technology of these varieties in ratoon rice production should be strengthened. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Rice Yield and Efficiency Large-Scale Improvement Technologies Integration Innovation and Application——Taking Guangde as an Example WANG Yaliang, ZHU Defeng, SHEN Hongfang, WAN Kejiang, ZHU Hui, ZHANG Junhua, WANG Danying, FU Guanfu, WAN Pinjun, TANG Wei, CHEN Huizhe, LI Chunsheng, XU Shuren China Rice    2025, 31 (6): 4-8.   DOI: 10.3969/j.issn.1006-8082.2025.06.002 Abstract （1243）   HTML （711）    PDF（pc） （626KB）（555）       Knowledge map    Save In response to the current bottleneck in large-scale yield improvement of rice in China, the China National Rice Research Institute has closely aligned with the strategy of “storing grain through technology” and systematically carried out technology integration and demonstration for enhancing rice yield and efficiency over large areas, using the “county-wide initiative” promotion as a leverage point. During the course of this work, we have integrated and innovated a comprehensive, all-element technological integration model termed “precision drilling for strong seedling cultivation and fixed-rate mechanical transplanting”. This model is founded on the selection of high-quality and high-yield rice varieties, with precision drilling for robust seedling cultivation and quantitative mechanical transplanting of basic seedling numbers as its core technologies. It is supplemented by a series of supporting technologies, including the construction of fertile plow layers, precision and efficient fertilization, scientific matching of irrigation and drainage facilities, and comprehensive pest and disease control. In 2025, large-scale field trials conducted in Guangde City, Anhui Province, demonstrated a significant yield increase of over 20% in the 10,000-mu(667 m2) demonstration plots through the extensive promotion of indica-japonica hybrid rice varieties and precision drilling-strong seedling mechanical transplanting techniques. The study further confirms that timely variety updates and integrated technology applications are effective means to drive large-scale yield and efficiency improvements. However, issues such as the improvement of medium- and low-yielding fields, effective disease control in certain regions, scientific management of weeds in direct-seeded rice, and the high cost of mechanical transplanting faced by small-scale farmers remain to be addressed. In the future, it is necessary to further refine the socialized service system, implement supporting measures for the improvement of medium- and low-yielding fields, and integrate high-yield technologies for different planting methods to promote a comprehensive increase in large-scale rice yields. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Effects of Co-Pyrolyzed Biochar from Straw and Pig Manure on Soil Fertility and Rice Yield ZHUANG Haifeng, LIN Zhouyang, RAO Cong, CHI Yongqing China Rice    2026, 32 (1): 30-38.   DOI: 10.3969/j.issn.1006-8082.2026.01.007 Abstract （1193）   HTML （543）    PDF（pc） （1413KB）（321）       Knowledge map    Save In view of the limitations of biochar made from single raw materials (crop straw-based biochar is relatively nutrient-poor, and pig manure-based biochar poses a risk of heavy metal accumulation), Co-pyrolyzed Biochar(CPB) was innovatively prepared through co-pyrolysis of straw and pig manure. The results showed that the specific surface area of CPB attained 21.58 m2/g, which was a substantial increase compared to that of Pig Manure-based Biochar (PMB) at 8.54 m2/g. Meanwhile, the contents of nitrogen, phosphorus, and potassium in CPB were all higher than those in Crop Straw-based Biochar (CSB), especially the phosphorus and potassium contents which increased by 262.30% and 282.70%, respectively. This study systematically and comprehensively explored the effects of CPB on soil fertility, enzyme activity, and rice growth in paddy fields. The research results indicated that CPB successfully integrated the high specific surface area of straw (21.58 m2/g) with the abundant mineral nutrients of pig manure(phosphorus content of 18.55 g/kg and potassium content of 33.56 g/kg). Moreover, its heavy metal content was significantly lower than that of PMB, with the contents of cadmium and arsenic decreased by 41.90% and 28.00%, respectively. Among the various application rates, the 2% application rate(CPB2) had the most remarkable effects: the contents of available phosphorus and rapidly available potassium in the soil increased significantly by 74.82% and 72.83%, respectively, compared to the control (CK, 0); the contents of organic matter and total nitrogen increased by 12.70% and 9.49%, respectively; the activities of soil phosphatase and catalase increased by 51.19% and 23.34%, respectively; and the rice yield increased by 8.37% compared to CK. Evaluation using the Integrated Fertility Index (IFI) revealed that the CPB2 treatment upgraded the soil fertility grade from Grade Ⅲ (CK, IFI value of 0.56) to Grade Ⅱ (IFI value of 0.68), with rapidly available potassium being the key driving factor with a weight of 0.112. The results of heavy metal pollution assessment showed that the heavy metal contents in all treatment groups were lower than the national standards (cadmium content ≤ 0.60 mg/kg), and the Nemerow Pollution Index (Pollution Index, PI) values were all less than 0.70, indicating no pollution risk. However, the 3% application rate treatment(CPB3) had a significantly lower yield increase effect (3.59%) than the CPB2 treatment due to micropore blockage and nutrient competitive adsorption. This study confirmed that co-pyrolyzed biochar optimized the “nutrient-structure-enzyme activity” network system of soil through the “carbon-ash synergistic effect” (i.e., porous carbon structures loading mineral nutrients). Among them, the 2% application rate was the optimal threshold for achieving “high yield-low risk” in paddy field systems. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Practices and Reflections on Increasing Large-Area Per-Unit Yield of Rice in a Mountainous County of Southeast Guizhou——A Case Study of Taijiang County WANG Hua, CHU Guang China Rice    2026, 32 (1): 1-5.   DOI: 10.3969/j.issn.1006-8082.2026.01.001 Abstract （1161）   HTML （45）    PDF（pc） （730KB）（559）       Knowledge map    Save Located in the transitional zone from the Yunnan-Guizhou Plateau to the hills of Western Hunan, Qiandongnan Prefecture features steep mountains, deep valleys, scattered arable land, and relatively thin soil layers—conditions that impose constraints on agricultural production. As the primary grain crop in the region, rice yield has a significant impact on both local food security and farmers’ income. In 2024, Taijiang County of Qiandongnan Prefecture carried out an initiative to increase rice yield across large areas, achieving a 9.13% rise in per-unit yield compared to 2023. This paper summarized the key measures implemented, the interim results obtained, and the existing challenges in Taijiang County’s yield enhancement initiative. It also offers reflections and recommendations for further increasing rice productivity in the future. Reference | Related Articles | Metrics | Comments（0）

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Effects of Plastic Film Mulching and Nitrogen Fertilizer Application Rate on Rice Yield and Nitrogen Use Efficiency in the Erhai Lake Region TAN Yujiao, WANG Haojun, ZHANG Shuntao, WANG Ting, TAN Yulong, LI Pengli, BAI Jianguo, TANG Wei, LV Shihua, ZHANG Fusuo, XU Jiuliang China Rice    2025, 31 (6): 55-65.   DOI: 10.3969/j.issn.1006-8082.2025.06.009 Abstract （1155）   HTML （513）    PDF（pc） （1307KB）（512）       Knowledge map    Save Plastic film mulching is a key technique for enhancing rice yield and production efficiency in regions with low temperatures and drought conditions. Investigating the impacts of plastic film mulching and fertilizer application rates on rice yield formation and nitrogen use efficiency(NUE) holds significant implications for driving innovation in rice cultivation practices and formulating scientific fertilization strategies in the Erhai Lake Basin, which is a high-altitude rice-growing area. In 2023, an experiment was conducted, involving two planting modes(CT, conventional tillage; PM, plastic film mulching, and three nitrogen fertilizer gradients (N0, no nitrogen application; N90, 90 kg N/hm2; N135, 135 kg N/hm2). The study systematically compared the effects of these treatments on rice yield and its components, the dynamics of dry matter accumulation, nitrogen accumulation and translocation characteristics, and NUE. The results showed that nitrogen fertilizer application significantly promoted the relative tillering rate during the early tillering stage. Meanwhile, it accelerated the maximum accumulation rates of dry matter and nitrogen. This effect further led to a significant increase in the accumulation of dry matter and nitrogen at maturity (with increases of 105.2%-119.0% and 70.0%-97.2% under the CT mode, respectively, and 142.0%-144.1% and 151.6%-179.8% under the PM mode, respectively), as well as an enhancement in rice yield (with increases of 50.0%-72.0% under the CT mode and 48.8%-50.0% under the PM mode). Under the CT mode, nitrogen application primarily increased yield by augmenting the number of grains per panicle, whereas under the PM mode, it increased yield mainly by elevating the number of effective panicles per unit area (P<0.05). However, nitrogen fertilizer application resulted in a decrease in NUE (with reductions of 14.9%-16.0% under the CT mode and 42.0%-46.2% under the PM mode). Compared with the CT mode, plastic film mulching significantly elevated the soil temperature in the 0-20 cm soil layer by 0.8 ℃ within one month after rice transplantation, enhanced the relative tillering rate during the early tillering stage by 50.9%, and raised the accumulation of dry matter and nitrogen at maturity by 49.0% and 92.3%, ultimately the rice yield significant increased by 55.0%. Under the same nitrogen application level, compared with the CT mode, the PM mode significantly increased in NUE, as evidenced by increases in nitrogen partial factor productivity (NPFP) of 43.3%-62.4%, nitrogen agronomic efficiency (NAE) of 15.2%-60.8%, and nitrogen physiological efficiency (NPE) of 174.4%-219.9%. Based on the findings of this study, under the cultivation conditions in the Erhai Lake Basin, applying nitrogen fertilizer at a rate exceeding 135 kg/hm2 in the CT mode can achieve relatively high rice yields. In contrast, in the PM mode, applying nitrogen fertilizer at a rate of 90 kg/hm2 can not only realize high rice yields but also effectively improve NUE. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Comparison on Digestion Properties of Cooked Rice of Early- and Late-season Rice Varieties LI Li, HU Liqin, Deng Qichang, CAO Wei, CAO Fangbo, CHEN Jiana, HUANG Min China Rice    2025, 31 (6): 20-24.   DOI: 10.3969/j.issn.1006-8082.2025.06.005 Abstract （1125）   HTML （113）    PDF（pc） （513KB）（848）       Knowledge map    Save Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Patterns of Dry Matter Accumulation and Nitrogen, Phosphorus, and Potassium Nutrient Absorption in Double-cropping Rice Varieties in Hubei Province LIU Xiaoge, WANG Yang, DAI Zhigang, WANG Benfu, LI Xiaokun China Rice    2025, 31 (6): 46-54.   DOI: 10.3969/j.issn.1006-8082.2025.06.008 Abstract （1123）   HTML （127）    PDF（pc） （954KB）（402）       Knowledge map    Save Using five early-season rice varieties (Liangyou 302, Liangyou 287, Ezao 18, Ezao 17, and Liangyou 6) and five late-season rice varieties (Tyou 180, Huanghuazhan, Fengyuanyou 299, Tianyouhuazhan, and Liangyou 33) as test materials, field experiments were conducted in Zhougan Village, Dajin Town, Wuxue City, Hubei Province, in 2022. By measuring the dry matter mass and the content of nitrogen (N), phosphorus (P), and potassium (K) nutrients at key growth stages of each variety, and employing the Logistic equation y=K/(1+ae-bt) to model the dry matter accumulation process in rice, we analyzed the patterns of dry matter accumulation and N, P, and K nutrient uptake in early-and late-season rice varieties, aiming to provide a theoretical basis for scientific and rational fertilization of double-cropping rice in Hubei Province. The results revealed that, in terms of dry matter accumulation, both early-and late-season rice exhibited a “slow-fast-slow” growth trend in total dry matter accumulation, with the rapid accumulation phases occurring from 59 to 95 days (lasting 36 days) and from 28 to 73 days (lasting 45 days) after transplanting, respectively. The dry matter accumulation in stems and leaves initially increased and then decreased, while that in panicles showed a continuous upward trend. Regarding nutrient uptake, the total N accumulation in both early- and late-season rice showed a continuous increase; during the rapid accumulation phase, early-season rice accumulated 52.7% of its maximum N accumulation, compared to 76.9% for late-season rice. The total accumulation of P and K initially increased and then decreased. At harvest, the N and P content in the panicles of early-season rice accounted for 63.8% and 73.9% of the total, respectively, while K content in the stems accounted for 72.8% of the total. For late-season rice, the N and P content in the panicles accounted for 69.7% and 76.2% of the total, respectively, and K content in the stems accounted for 68.6% of the total. The yield measurement results showed that the average yield of late-season rice was 7,924.6 kg/hm2, representing a 24.2% increase compared to early-season rice (6,381.5 kg/hm2). To produce 100 kg of rice grain, early-season rice required the uptake of 1.9-2.0 kg of N, 0.9-1.2 kg of P2O5, and 2.5-2.9 kg of K2O, while late-season rice required 1.5-1.8 kg of N, 0.7-1.0 kg of P2O5, and 1.6-2.1 kg of K2O. In conclusion, there are significant differences in dry matter accumulation and N, P, and K nutrient requirements between early- and late-season rice at different growth stages. In practical fertilization, the ratios of N, P, and K in fertilizers for early- and late-season rice should be adjusted to formulate targeted fertilization strategies, improve fertilizer utilization efficiency, and maximize the yield and economic benefits of double-cropping rice. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Effects of Combined Application of Biological Organic Fertilizer and Nitrogen Fertilizer on the Quality Traits of Dalixiang and Its Relationship with Panicle Type Index GONG Yanlong, LEI Yue, WANG Zhongni, ZHU Susong China Rice    2026, 32 (1): 55-63.   DOI: 10.3969/j.issn.1006-8082.2026.01.010 Abstract （1123）   HTML （267）    PDF（pc） （1162KB）（469）       Knowledge map    Save To explore the influence of different ratios of organic fertilizer to nitrogen fertilizer on the quality traits and panicle type index of high-quality conventional rice variety Dalixiang, and to clarify the relationship between quality traits and panicle type index(PTI), a field experiment was conducted using Dalixiang as the test material. The experiment included 6 treatments: no fertilization (CK), normal application of nitrogen fertilizer(N), 30% replacement of nitrogen fertilizer with biological organic fertilizer(NF1), 50% replacement of nitrogen fertilizer with biological organic fertilizer(NF2), 70% replacement of nitrogen fertilizer with biological organic fertilizer (NF3), and 100% application of organic fertilizer (F). The research results showed that the combined application of biological organic fertilizer and nitrogen fertilizer significantly influenced rice quality, with a reasonable ratio greatly improving processing, appearance and nutritional quality of rice, as well as significantly increasing protein components and amino acid content in rice. The NF1 treatment exhibited the highest brown rice rate, milled rice rate and head rice rate along with the lowest chalkiness degree; its protein content was lower than that of the N treatment but higher than that of other treatments. The NF3 treatment resulted in higher peak viscosity, hot paste viscosity and cold gel viscosity, along with the lowest setback value, significantly optimizing the starch RVA profile characteristics values. According to the results of principal component analysis, the influence of combined application of biological organic fertilizer and nitrogen fertilizer on the quality of Dalixiang could be characterized by the first three principal components, with a cumulative variance contribution rate of 85.10%. Combined with the analysis of the factor score coefficient matrix, five indicators namely arginine, phenylalanine, threonine, milled rice albumin and brown rice albumin, were determined as the key factors for evaluating the quality of rice after the combined application of organic fertilizer and nitrogen fertilizer. In addition, different treatments were divided into three categories through cluster analysis: Category Ⅰincluded NF2, NF3 and N, with the best comprehensive quality; Category Ⅱincluded CK and NF1, with medium comprehensive quality; Category Ⅲ only contained F, with the worst comprehensive quality. Correlation analysis showed that there was a significant positive correlation (P<0.05) between the panicle type index and brown rice rate, milled rice rate and head rice rate. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Research of High Quality and High Efficiency Cultivation Technique and Industrialization Development of Jiaheyou 7245 GU Tianfei, ZHOU Naidi, YING Junjie, TANG Sizhong, HE Haohao, CHEN Huizhe, SHEN Xihong, ZHU Guiping China Rice    2025, 31 (6): 117-120.   DOI: 10.3969/j.issn.1006-8082.2025.06.018 Abstract （1120）   HTML （189）    PDF（pc） （539KB）（492）       Knowledge map    Save Jiaheyou 7245 is a new three-line hybrid rice variety developed by China National Rice Research Institute, Jiaxing Academy of Agricultural Sciences and Institute of Genetics and Developmental Biology, Chinese Academy of Sciences crossed Jiahe 212A and Zhonghui 7245. This variety boasts features such as an ideal plant type, large panicles with heavy grains, high yield, superior grain quality, and strong disease resistance. It is suitable for cultivation as mid- or late-season rice in the middle and lower reaches of the Yangtze River. After five years of trial planting and demonstration, Jiaheyou 7245 has proven to combine both high yield and superior grain quality achieving a yield of 800.0 kg/667 m2 in Xianju County, Zhejiang Province. It has won the Gold Award for “Good Rice” in Zhejiang Province and Taizhou City on multiple occasions. This variety can enhance the planting benefits and income of grain farmers and has high popularization value. This paper summarizes and analyzes the planting performance, high-quality and high-efficiency cultivation techniques and its prospects for industrialization development. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Challenges and Reflections Suggestions on Large-Scale Yield Improvement of Rice in China FENG Yupeng, HE Juan, LIANG Jian, LIU Akang, CHEN Danyang, WAN Kejiang China Rice    2025, 31 (6): 1-3.   DOI: 10.3969/j.issn.1006-8082.2025.06.001 Abstract （1118）   HTML （311）    PDF（pc） （501KB）（734）       Knowledge map    Save The Chinese government has consistently placed food security work at a strategic height in national development, attaching great importance to it and continuously advancing relevant efforts. Rice, as a crucial staple food crop in China, enhancing its per-unit yield is a key measure to ensure the absolute security of the country’s staple food supply. From a global perspective, China’s rice yield per unit area is relatively high, so this also means there is a lack of readily applicable successful experiences and mature practices from other countries to borrow. Meanwhile, China’s rice production is confronted with numerous practical challenges. On one hand, there are significant differences in yield per unit area among different rice-growing regions, and the yield potential in some regions has not been fully tapped. On the other hand, extreme climate events have become more frequent in recent years. Natural disasters such as droughts, floods, and high-temperature heat damage have severely impacted rice growth, further increasing the difficulty of improving per-unit yield. In response to the various factors restricting the enhancement of rice yield per unit area over large areas in China, this paper conducts an in-depth analysis of the feasibility and potential opportunities for improving China’s rice yield per unit area. Based on this, it further explores the technical challenges faced in the process of promoting yield improvement in different rice-growing regions, clarifies the key tasks for each region, and elaborates in detail on the supporting service tasks that go along with them. The aim is to provide comprehensive, scientific, and targeted guidance and references for enhancing rice yield per unit area over large areas in China. Reference | Related Articles | Metrics | Comments（0）

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Resistance Mechanism of Rice Carrying Pyramided Bph14 and Bph15 Genes to Brown Planthopper LIN Zhijian, LIN Chengbao, TANG Jiangxia, DENG Zeqin, HUANG Xianbo, SU Rongli China Rice    2026, 32 (1): 102-106.   DOI: 10.3969/j.issn.1006-8082.2026.01.018 Abstract （1099）   HTML （139）    PDF（pc） （763KB）（361）       Knowledge map    Save The brown planthopper (Nilaparvata lugens) is a significant pest that causes severe damage to rice. To investigate the changes in resistance and the resistance mechanism against the brown planthopper of rice materials with pyramided Bph14 and Bph15 genes, as well as their different combinations, this study selected 10 rice materials. Antifeedant identification was conducted at both the seedling and adult stages, and tests were carried out to assess the antibiosis, antixenosis, and tolerance of these 10 rice materials against the brown planthopper. The results revealed that rice materials carrying the Bph14 and Bph15 genes, along with their different combinations, exhibited resistance (R) or high resistance (HR) levels to the brown planthopper at both the seedling and adult stages. Moreover, they simultaneously demonstrated antibiosis, antixenosis, and a certain degree of tolerance against the pest. The insect-resistant materials obtained in this study will serve as high-quality germplasm parents for the breeding of new hybrid rice varieties resistant to the brown planthopper. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Research on the Bottlenecks and Countermeasures of “Jiaxing Rice” Brand Construction CHEN Jie, WANG Gaofeng China Rice    2026, 32 (1): 118-122.   DOI: 10.3969/j.issn.1006-8082.2026.01.021 Abstract （1075）   HTML （12）    PDF（pc） （802KB）（282）       Knowledge map    Save This article focuses on the brand development of “Jiaxing Rice”, delving into the challenges faced by the brand, including inadequate awareness promotion after environmental improvements, a shortage of management talent in the industrial chain, insufficient conditions for single-variety warehouses, and inconsistent standards for high-quality rice. The article propose strategies such as government-led consumption, establishing a shareholding company for unified management, introducing supportive policies, and training new professional farmers. These measures aim to enhance the brand recognition and competitiveness of “Jiaxing Rice”, promote the sustainable development of the Jiaxing rice industry, and provide comprehensive references for the development of regional agricultural brands. Reference | Related Articles | Metrics | Comments（0）

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Research Progress and Prospect in Genetic Improvement of Salt Alkali Tolerant Rice NIU Fuan, ZHANG Anpeng, CHENG Can, SUN Bin, CHU Huangwei, ZHOU Jihua, DAI Yuting, ZHANG Jianming, FANG Jun, XIE Kaizhen, CAO Liming China Rice    2026, 32 (1): 26-29.   DOI: 10.3969/j.issn.1006-8082.2026.01.006 Abstract （1072）   HTML （22）    PDF（pc） （562KB）（395）       Knowledge map    Save Abstact: Breeding and cultivating salt-tolerant rice holds crucial strategic significance for the comprehensive and efficient utilization of saline-alkali land and the safeguarding of national food security. This paper provides a systematic review of the impacts of salt-alkali stress on rice yield and quality traits, delves into the technologies for mapping and cloning genes/QTLs related to salt tolerance in rice, and summarizes the research progress in the genetic improvement of salt-tolerant rice varieties. On this basis, it offers an outlook on the research directions and application prospects of new salt-tolerant rice varieties in the future. Reference | Related Articles | Metrics | Comments（0）

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Effects of Organic Fertilizer Application on Soil Physicochemical Properties and Rice Growth and Development in Saline-Alkali Land ZHANG Xiang, GENG Xiaoyu, WANG Lulu, MA Weiyi, ZUO Boyuan, ZHU Jizou, LIU Yang, SHENG Xiaozhou, GAO Pinglei, CHEN Yinglong, WEI Huanhe, DAI Qigen China Rice    2026, 32 (1): 39-46.   DOI: 10.3969/j.issn.1006-8082.2026.01.008 Abstract （1068）   HTML （25）    PDF（pc） （1001KB）（324）       Knowledge map    Save Saline-alkali land is an important reserve arable resource and a “potential grain warehouse” in China. However, its high soil salinity, poor structural properties, and low nutrient content severely constrain crop productivity and quality improvement. Existing studies have demonstrated that the application of organic fertilizers can effectively improve the physicochemical properties of saline-alkali soils and alleviate the adverse effects of salinity on rice development, yield, and quality. This paper introduces the definition and classification of organic fertilizers, summarizes their effects on the physicochemical properties of saline-alkali soils, the composition of soil microbial communities, and soil enzyme activities. Furthermore, it analyzes the influence and physiological mechanisms of organic fertilizer application on rice growth, yield, and quality in saline-alkali environments. Finally, it offers recommendations for future innovations in organic fertilizer products and the optimization of application technologies, aiming to provide a scientific foundation for enhancing soil improvement efficiency and promoting rice yield and quality in saline-alkali lands. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Development and Prospects of Hybrid Japonica Rice in Northern China Over the Past 50 Years ZHANG Manli, ZHENG Wenjing China Rice    2026, 32 (1): 16-20.   DOI: 10.3969/j.issn.1006-8082.2026.01.004 Abstract （1049）   HTML （20）    PDF（pc） （592KB）（435）       Knowledge map    Save China’s rice breeding has undergone several significant breakthroughs, including the development of dwarf rice, hybrid rice, and super rice. Among these, the utilization of heterosis has consistently remained the core and a challenging aspect of research. With the continuous innovation of breeding technologies, the development of hybrid rice has constantly advanced to new stages. In 1975, the Liaoning Academy of Agricultural Sciences employed the “indica-japonica bridging” technique to successfully introduce the restoring gene from indica rice into the japonica rice restorer line C57. This led to the development of the japonica hybrid rice combination Liyou 57, which was subsequently widely promoted in production, significantly enhancing the yield per unit area in northern rice-growing regions. Over the past 50 years, three generations of researchers at the Liaoning Academy of Agricultural Sciences have persistently dedicated themselves to the research and innovation of japonica hybrid rice breeding and related key technologies. They have accumulated a wealth of breeding materials and continuously improved the breeding theory and technical system. In the past decade, by integrating biotechnology and molecular breeding approaches, and relying on technologies such as combining ability analysis, construction of heterotic groups, and heterosis prediction, the genetic effects and compositional mechanisms of heterosis in northern japonica hybrid rice have been further clarified. This has promoted the deep integration and coordinated development of theoretical research on heterosis and breeding practices. Table and Figures | Reference | Related Articles | Metrics | Comments（0）