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20 July 2019, Volume 25 Issue 4 Previous Issue    Next Issue

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The Advantages, Challenges and Internationalization Strategies of China’s Hybrid Rice 2019, 25(4): 1-4.  DOI: 10.3969/j.issn.1006-8082.2019.04.001 Abstract ( )   PDF (609KB) ( )   Hybrid rice is an original increasing grain yield technology invented by China. With the continuous innovation of breeding technology, the development of hybrid rice in China has been leading the way in the world. In recent years, modern agriculture has higher requirements for quality, yield stability, lodging resistance and mechanization of hybrid rice. Therefore, while stabilizing the planting area of domestic hybrid rice, it is still necessary to continuously enhance the international competitiveness of China's seed industry, and expand the international markets and global planting area of hybrid rice. Taking advantage of the“the Belt and Road”, we will connect with internationalization to step up technological innovation in hybrid rice, to establish research- development bases and seed production bases for overseas hybrid rice, to speed up the creation of scientific and technological commanding heights of bybrid rice seed industry in the world, promote hybrid rice to take the lead in internationalization and contribute to world food security.

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Study on Flowing Water Irrigation to Alleviate High Temperature Damage on Late Rice Seedlings 2019, 25(4): 5-7.  DOI: 10.3969/j.issn.1006-8082.2019.04.002 Abstract ( )   PDF (600KB) ( )   In order to provide technical reference for reducing the injury of high temperature on late rice seedlings, four later season rice cultivars, Tianyouhuazhan, Wuyou 308, Yongyou 538 and Jia 58, were used to study the influence of high temperature on machine transplanting late rice under different irrigation methods. The results showed that, compared with silent water irrigation, cyclic flowing water irrigation significantly reduced high temperature injury. Under the condition of air temperature of 40℃, cyclic flowing water irrigation improved the seedling quality. Compared with the silent water irrigation, cyclic flowing water irrigation increased seedling dry weight and SPAD value by 28.33% and 3.73% respectively, meanwhile the ratio of yellow leaves declined by 41.66%. The main reason for reducing the high temperature injury of seedling was that cyclic flowing water irrigation treatment reduced soil temperatures and water temperatures, and the soil temperature was 1℃~2℃ lower than that of silent water irrigation, while the daytime water temperature was decreased by 10℃~11℃. The study shows that in late rice transplanting, cyclic flowing water irrigation could alleviated high temperature injury, and speed up the green returning and growth of rice.

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Effects of Cultivation Measures on Yield and Nitrogen Use Efficiency of Super Rice 2019, 25(4): 8-15.  DOI: 10.3969/j.issn.1006-8082.2019.04.003 Abstract ( )   PDF (960KB) ( )   Rice is an important food crops in China. Under the background of growing population and economics, the demand for grain is continuously increasing, while the increase of grain yield requires greater input of fertilizer and water and better cultivation measures. Under the condition of large amount of fertilizer and water input in China, it is of great significance to optimize cultivation measures for increasing yield and fertilizer use efficiency of rice. An experiment was conducted to study the effects of cultivation measures （zero N application, local farmer’s practice, increase in plant density and decrease in N rate, precise irrigation） on yield and nitrogen fertilizer utilization efficiency of rice, using hybrid rice Yongyou 2640 and conventional japonica rice Wuyungeng 24 as materials. The results showed that the cultivation measures such as increase in plant density and decrease in N rate, precise irrigation could significantly improve effective leaf area index （LAI）, efficient LAI, seed/leaf ratio, sink capacity and activities of enzymes of nitrogen metabolism, and then improve grain yield and nitrogen use efficiency.

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Grain Yield and Profit of Machine-harvested Low Stubble Ratoon Rice under Different Nitrogen Management 2019, 25(4): 16-21.  DOI: 10.3969/j.issn.1006-8082.2019.04.004 Abstract ( )   PDF (931KB) ( )   Machine-harvested ratoon rice is a kind of high efficiency rice cultivation mode. In order to explore the high yield and high efficiency fertilization of machine-harvested ratoon rice in south China, a fertilizer trial was conducted to study the effects of different nitrogen fertilizer operations on yield and its composition of ratoon rice, using Huanghuazhan（HHZ）and Shenyou 9516 （SY9516）as materials. The results showed that, there were significant differences in grain yield between different treatments. The yield of HHZ and SY9516 was 3.68~5.43 t/hm2 and 2.38~3.97 t/hm2, respectively. T8 treatment（bud fertilizer, tiller fertilizer and panicle fertilizer）has the highest yield, the second is T4 treatment（tiller fertilizer and panicle fertilizer）, T5 treatment （bud fertilizer）was the lowest, there was no significant difference between T8 treatment and T4 treatment. The yield of ratoon rice was positively correlated with the number of effective panicles per hectare, sink size and total biomass, these three parameters were significantly improved by applying tiller fertilizer and panicle fertilizer, but the effect of bud fertilizer was little. The production cost of machine-harvested low stubble ratoon rice could save 8 916~10 268 yuan /hm2 and increase the income by 1 583 ~ 5 046 yuan/hm2, compared with normal late rice production. When panicle fertilizer was applied in the first season, the machine-harvested ratoon rice in South China does not need to apply bud fertilizer, just apply fertilizer and panicle fertilizer after the harvest of the first season rice.

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Analysis on the Rice Research Trend Based on Bibliometrics of Literature 2019, 25(4): 22-26.  DOI: 10.3969/j.issn.1006-8082.2019.04.005 Abstract ( )   PDF (632KB) ( )   In order to understand the research progress and development trend in the field of rice, the articles of rice research were analyzed from 1999 to 2018 based on the Web of Science database, and used the method of literature metrology analysis. The results showed that there were 136 384 articles in the field of rice research from 1999 to 2018, the number of articles increased year by year. China, the United States, India, Japan and South Korea were the top five countries of articles, the number of articles published by Chinese academy of sciences, Zhejiang University, Nanjing Agricultural University, Chinese Academy of Agricultural Sciences and International Rice Research Institute ranked top 5 respectively. The most influential core journals were 《PLoS ONE》《Plant and Cell Physiology》《Frontiers in Plant Science》, the main research disciplines are agronomy, botany and food sciences. Rice genomics, resistance and rice quality were the research focus of rice.

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Study on Heavy Metal Pollution in Rice and its Control Techniques 2019, 25(4): 27-30.  DOI: 10.3969/j.issn.1006-8082.2019.04.006 Abstract ( )   PDF (536KB) ( )   The research status of heavy metal pollution in rice and symptoms of heavy metal toxicity in rice were summarized in this paper. The sources of heavy metals that contaminated rice were discussed, and illustrated the control technology and mechanism of heavy metals, including immobilization technology, foliar fertilizer control, rice variety screening and agronomic measures. The prospects of how to prevent and control the accumulation of heavy metals in rice were discussed.

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Study on the Path of National Rice Variety Test in Wuling Mountain Area from the Perspective of “Industrial Prosperity” 2019, 25(4): 31-33.  DOI: 10.3969/j.issn.1006-8082.2019.04.007 Abstract ( )   PDF (507KB) ( )   Variety test is the foundation and precondition of approval and extension of new rice variety, and it’s also an important carrier for screening and providing improved variety for modern rice industry. Under the grand background of promoting industrial prosperity and implementing rural revitalization strategy in China, it is necessary to set up a national rice variety experiment which was according with the development of the green and high-quality rice industry in Wuling Mountain area. The present situation and existing problems of the national rice variety test in Wuling mountainous area were expounded in this paper, and the development ideas of the variety test under the new situation of structural reform on the supply side of agriculture were put forward, so as to accelerate the growth of the region's green and high-quality rice industry.

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Effects of Water Management on the Absorption of Cadmium in Rice 2019, 25(4): 34-37.  DOI: 10.3969/j.issn.1006-8082.2019.04.008 Abstract ( )   PDF (440KB) ( )   Using late rice varieties Yuzhenxiang and Xiangwanxian 12 as materials, a pot experiment was conducted to study the effects of three different water irrigation modes （W1, long-term flood irrigation; W2, wet irrigation; W3, staged humid irrigation） on cadmium content in brown rice. The results showed that the cadmium content and enrichment coefficient of all parts were the highest in W3 treatment and the lowest in W1 treatment in the three growth periods. For Yuzhenxiang, the cadmium content in brown rice of W1 treatment was 56.52% and 66.67%% lower than that of W2 treatment and W3 treatment, respectively, moreover, there was a significant difference between W1 treatment and W3 treatment. For Xiangwanxian 12, the cadmium content in brown rice of W1 treatment was 65.22% and 52.94% lower than that of W2 treatment and W3 treatment, respectively, but the difference between treatments was not significant. Therefore, the long-term flooding irrigation is an agronomic measure that could safely and effectively reduce the cadmium content in brown rice.

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Analysis on Quality Changes of Northern Japonica Rice during Winter Nursing in Hainan Island 2019, 25(4): 38-40.  DOI: 10.3969/j.issn.1006-8082.2019.04.009 Abstract ( )   PDF (557KB) ( )   In order to study the quality change rule of northern japonica rice during winter nursing in Hainan island, the quality indexes of Liaogeng 9, Liaoxing 1, Liaoxing 21 and the backbone restorer lines of hybrid japonica rice C62 and C418 were analyzed. The results showed that, the chalkiness rice rate and chalkiness degree were not significantly different between the producing areas, and the brown rice rate, milled rice rate, head rice rate, alkali elimination, viscosity, amylose content, protein content, grain length, grain length-width ratio and so on reached the significant or extremely significant level. When rice was planted in different ecological zones, the quality indexes showed great variability, and the variation trend of varieties was different, which showed the complexity of the quality performance of rice in breeding in southern and northern area. Therefore, for most quality traits of northern japonica rice, it is inadvisable to select in breeding in Hainan.

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Effects of Iodine Element on Activity and Germination of Rice Seeds 2019, 25(4): 41-43.  DOI: 10.3969/j.issn.1006-8082.2019.04.010 Abstract ( )   PDF (385KB) ( )   In order to explore the effects of iodine on seed germination of rice, the seed of early indica rice Zhongzao 39 were soaked under 8 concentrations of iodine. The results showed that low concentration of iodine solution （0.0001%~0.001%） could greatly improve the activity of rice seeds, reduce the time of 50% germination and mean germination time，and improve the synchronicity and germination rate. It is very important to study the action mechanism of iodine on seed priming of rice.

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Screening of Early Rice with High Nitrogen Use Efficiency 2019, 25(4): 44-46.  DOI: 10.3969/j.issn.1006-8082.2019.04.011 Abstract ( )   PDF (425KB) ( )   Field experiments were carried out to study the effects of different nitrogen application rate on rice yield, dry matter accumulation and nitrogen uptake of different genotypes rice varieties, 12 early rice varieties were used as materials. Three high nitrogen use efficiency varieties, Zhongjiazao17, Zhongzao 35 and Jinyou463, were selected with yield and physiological nitrogen use efficiency （PE）as the main screening indexes.

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Production and Marketing Technology of Organic Rice in Japan and it’s Enlightenment to the Development of Organic Rice Industry in Hongze County 2019, 25(4): 47-50.  DOI: 10.3969/j.issn.1006-8082.2019.04.012 Abstract ( )   PDF (710KB) ( )   Organic rice refers to the rice products obtained by selecting excellent rice varieties, producing and processing according to organic agricultural production standards, and adopting sustainable agricultural production methods without chemical synthetic pesticides, fertilizers, growth regulators and other substances, which is beneficial to the survival and health of human beings. To study the application technology of Japanese organic rice production and apply Japanese innovative thinking and development concept, it could provide some references for the development of organic rice industry in Hongze county.

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Effects of Water-soluble Organic Micronutrient Fertilizer on Yield and Quality of Rice in Different Densities 2019, 25(4): 51-54.  DOI: 10.3969/j.issn.1006-8082.2019.04.013 Abstract ( )   PDF (466KB) ( )   In order to study the application effects of organic water-soluble micronutrient fertilizer on yield and quality of rice in different densities, using Yanfeng 47 as material, the main cultivar in Binhai region, and spraying foliar micronutrient fertilizer‘New America Star’（WF）, conventional fertilizer potassium dihydrogen phosphate （WC）, and water （CK） respectively, when the seedlings turning yellow, 2~3 days before transplanting, crevasse period and full panicle stage. The results showed that the yield of Yanfeng 47 was decreased with the decrease of planting density. The quality of rice is less affected by planting density. When the hole spacing is 16 cm, the yield of WF treatment is 11 298.15 kg/hm2, increased by 16.96% compared to CK; When the hole spacing is 18 cm, the yield of WF treatment is 10 994.85 kg/hm2, increased by 15.42% compared to CK. The yield of WF at different hole distance was not significant. Compared with the WC and CK, the protein content of WF was increased by 1.2 percentage points and 0.9 percentage points respectively when the hole spacing is 16 cm; the protein content of WF was increased by 0.6 percentage points and 1.0 percentage points respectively when the hole spacing is 18 cm. So, spraying foliar micronutrient fertilizer ‘new America Star’ could increase the yield and improve the quality of rice.

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Study on the Adaptability of Rice Varieties under Dry Direct Seeding in Coastal Region 2019, 25(4): 55-58.  DOI: 10.3969/j.issn.1006-8082.2019.04.014 Abstract ( )   PDF (431KB) ( )   Based on the rapid development of direct seeding rice in coastal area, 27 rice varieties contains Jigeng Series, Tiegeng Series, Beigeng Series and Yangeng Series, were used to analyze the seedling rate, salt tolerance and maturity of each variety under dry direct seeding condition. According to the field performance and yield to choose the suitable varieties for dry direct seeding in coastal areas. The results showed that Yangeng 933, Yangeng 1403, Yangeng 927, Yangeng 662, Yangeng 765, Yangeng 22, Fuyou 33, Beigeng 1604, Tiegeng 14 and Jigeng 88 had high seedling rate, strong salt tolerance and good maturity, the average yield was 8.03 t/hm2, which were suitable for planting as dry direct seeding rice in coastal areas.

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Study on Adaptability of Agro-climatic Index of Double-cropping Early Rice in Central Hunan 2019, 25(4): 59-62.  DOI: 10.3969/j.issn.1006-8082.2019.04.015 Abstract ( )   PDF (581KB) ( )   Based on the daily data of the meteorological stations in central Hunan from 1980 to 2017, combined with the double-cropping early rice yield data from 2007 to 2017 and the observation data from 3 rice meteorological observatories, the M-K mutation was used to analyze the adjustment of sowing date of double-cropping early rice in central Hunan, and the effects of agro-climatic factors at different growth stages on the yield of double-cropping early rice was analyzed by grey correlation method, four major agro-climatic indicators were selected, and their adaptive adjustments were explored. Finally, the climate index suitability evaluation model was used to verify the agro-climatic indicators. The results showed that the sudden change of the initial day stabilize through 10 °C during the spring sowing was occurred in 1997 from 1980—2017 in central Hunan. The sowing date of the double-cropping early rice in central Hunan could be advanced from the late March to early April in the 1990s to mid-March to early April, about 7 days in advance. The thresholds of major agro-climatic indicators affecting the yield of double-cropping early rice were identified by grey correlation method and polynomial method: accumulated temperature of 10℃≥1 546.9 ℃ from jointing to maturity stage, sunshine hours≥291.1 h from jointing to maturity stage, and accumulative temperature of 10℃≥ 476.8 ℃ at paddy field stage, and the mean temperature≥19.8℃ during the transplanted to delivery period. Finally, the verification results of climate index suitability evaluation model showed that these agricultural climate indicators were suitable for practical production of double-cropping early rice in central Hunan. It provided theoretical support for the establishment and updating of the climate index system, the production forecast and the adjustment of planting system of double-cropping early crops in central Hunan.

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Effects of Water Content of Substrate on Seedling Quality and Yield of Machine-transplanted Rice 2019, 25(4): 63-67.  DOI: 10.3969/j.issn.1006-8082.2019.04.016 Abstract ( )   PDF (555KB) ( )   There are few reports on the effect of water content of substrate on the seedling quality and yield of machine-transplanted rice. In order to clarify the optimum water content of substrate, an experiment was conducted to study the effects of different water content of substrate（Water content is 40%, 60%, 80% and 100% respectively, which represented by W1, W2, W3 and W4 respectively）on the seedling quality and yield of machine-transplanted rice using Jiangzao 361 as material. The results showed that the water content of substrate had a significant influence on the seedling quality and yield of machine-transplanted rice. In the early season, the yield of EW2 treatment was the highest, which was significantly increased by 4.9%~5.9% than the other three treatments. The leaf age of EW2 treatment was significantly increased by 7.0% than EW1 and EW4 treatment, the plant height of EW2 treatment was significantly increased by 10.2% and 10.7% than EW3 and EW4 treatment, the dry weight per seedling of EW2 treatment was significantly increased by 6.8%~13.3%, compared with the other three treatments. The correlation analysis showed that the yield of early rice was significant positively correlated with grain number per ear. In the late season, the yield of LW2 treatment was the highest, which was significantly increased by 13.2% and 10.4% compared with LW1 and LW4 treatment. With the increase of water content of substrate, the leaf age, the plant height, the stalk and the dry weight per seedling were increased first and then reduced, LW2 treatment was the largest, the maximal value of 4 indexes were increased by 7.4%, 13.3%, 13.0% and 14.8%, respectively, compared with the minimum value. The correlation analysis showed that the yield of late rice was negatively correlated with the thousand seed weight. Under the condition of this experiment, the optimum water content of substrate is 60%, which is conducive to improving the quality of rice seedling and increasing the yield of machine-transplanted rice.

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Control Efficiency of Endophytic Fungus Falciphora oryzae to Rice Blast of Direct Seeding Rice 2019, 25(4): 68-69.  DOI: 10.3969/j.issn.1006-8082.2019.04.017 Abstract ( )   PDF (405KB) ( )   Wild rice fungal endophyte Falciphora oryzae could induce resistance to rice blast under laboratory conditions. In order to determine the control efficiency of Falciphora oryzae to rice blast of direct seeding rice, a field experiment was carried out in 2017 at Tonglu, Zhejiang. The results showed that the control efficiency of Falciphora oryzae treated in different periods to rice blast of direct seedling rice was equivalent to bioreagents Kasugamycin and Bacillus, there was no significant difference between different treatments. Among them, the control efficiency by seed dressing （0 d）, 7 d or 14 d after sowing to leaf blast reached above 70%. The control efficency of Falciphora oryzae by 7 d or 14 d after sowing to neck blast reached above 70%, too. Thus it can be seen that seed dressing or sowing treatment once was capable to control rice blast of direct seeding rice.

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Evolution and Differentiation of Kam Sweet Rice 2019, 25(4): 70-73.  DOI: 10.3969/j.issn.1006-8082.2019.04.018 Abstract ( )   PDF (560KB) ( )   Kam sweet rice is a special glutinous rice in Dong ethnic minority in the southwest of China. For centuries, according to local climate and special ecological environment, through the long-term natural evolution and artificial selection, they are famed for their native-bred glutinous rice using traditional farming methods. The authors reviewed the relation between kam sweet rice and original ecology traditional culture, their unique characteristics, and the evolution and differentiation etc, which would enrich and supplement our national rice genetic resources, elite variety breeding, germplasm resource utilization and protection of new varieties, and providing a reference value for modern molecular design breeding in rice.

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Genotypic Difference in Zinc, Iron and Manganese in Indica Rice and the Effects of Foliar Application Zinc Fertilizer on Zinc Concentration of Rice in Hanzhong Area 2019, 25(4): 74-77.  DOI: 10.3969/j.issn.1006-8082.2019.04.019 Abstract ( )   PDF (452KB) ( )   The content of zinc, iron and magnesium in brown rice and milled rice of 45 indica rice varieties were compared in this study. At the same time, a field trial was conducted to study the effects of spraying zinc fertilizer on Zn content of 9 indica rice, with three treatments（CK, spraying water; T1, zinc fertilizer; T2, zinc fertilizer+triadimefon）. The results showed that the contents of zinc, iron and manganese in brown rice of 45 rice varieties were 17.44 mg/kg, 10.99 mg/kg and 25.09 mg/kg, respectively; the contents of zinc, iron and manganese in milled rice of 45 rice varieties were 11.39 mg/kg、4.14 mg/kg and 7.38 mg/kg, respectively. The contents of zinc, iron and manganese in brown rice was 1.53 times, 2.56 times and 3.40 times as much as those in milled rice, respectively, the loss rates were 34.69%, 62.33% and 70.59% in the process of milling, respectively. The field experiment showed that zinc fertilizer was beneficial to improve grain yield and the zinc content of rice. T1 and T2 treatment increased the content of Zn in milled rice from 10.57 mg/kg of CK to 14.08 mg/kg and 14.79 mg/kg with an increase of 33.2% and 40.0%, and increased the content of Zn in brown rice from 17.63 mg/kg of CK to 22.1 4 mg/kg and 21.50 mg/kg with an increase of 25.6% and 22.0%, respectively. The combination of foliar zinc fertilizer and pesticide could not only significantly increase the zinc content of rice, but also effectively prevent diseases and insect pests. Therefore, the technique of spraying zinc fertilizer with pesticides is a high yield and high efficiency technique.

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Present Situation and Development Countermeasures of Rice Southern Propagation of Jiangsu Province 2019, 25(4): 78-79.  DOI: 10.3969/j.issn.1006-8082.2019.04.020 Abstract ( )   PDF (429KB) ( )   The base of Hainan National Breeding and Multiplication is the“Silicon Valley” and“Special Zone” of seed science and technology innovation. It plays a unique role in breeding, popularizing and applying new rice varieties. In this paper, the present situation and main problems of rice southern propagation of Jiangsu province were described, and the countermeasures of the development under the new situation were discussed.

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Discussion on the Development Prospect of Colored Rice in Jiangxi 2019, 25(4): 80-82.  DOI: 10.3969/j.issn.1006-8082.2019.04.021 Abstract ( )   PDF (419KB) ( )   This paper summarizes the nutritional components and medicinal value of colored rice. In view of the present situation of “less variety，small scale，low level and lack of germplasm resources” in the development of colored rice in Jiangxi province，the corresponding countermeasures were put forward. The purpose is to provide some references for the development and utilization of colored rice in Jiangxi province in the future.

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Strategy of Rice Industry Transformation and Upgrading in Tianjin 2019, 25(4): 83-87.  DOI: 10.3969/j.issn.1006-8082.2019.04.022 Abstract ( )   PDF (820KB) ( )   The promotion of greenization, high quality, specialization and branding is the current development direction of the current agricultural industry. The rice industry in Tianjin is facing the problems of production costs increasing, low level of intensive processing and brand declining. It is necessary to carry out industrial transformation and upgrading, and integrate the key links in the rice industry chain （breeding, planting, storage, processing, value communication，market operations, etc.）. This article described the overall development, planting layout, dominant model and value model of the rice industry in Tianjin; analyzed the problems in the development of rice industry; summarized the successful experience of rice industry transformation and upgrading at home and abroad. It is concluded that the transformation and upgrading of rice industry in Tianjin should take the road of industrial integration and put forward corresponding countermeasures from the perspectives of industrial development direction，development layout and development vigor.

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Present Situation and Countermeasures of Jiangxi Grain Industry 2019, 25(4): 88-92.  DOI: 10.3969/j.issn.1006-8082.2019.04.023 Abstract ( )   PDF (720KB) ( )   Jiangxi as the main commodity grain base in Southern China, it is very important to improve quality and efficiency for the comprehensive implementation of national food security strategy. At present, the development of Jiangxi grain industry is showing a positive trend, but there are still inevitable new phenomena and new problems in the development of grain industry. It is proposed that the three ways of “raising production capacity, adjusting structure and promoting processing” should be adopted to achieve “high quality grain, green grain and strong grain brands” and promote the stable development of the grain industry.

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Study on the Technique of Rice Dry Direct Seeding in Western Heilongjiang Province 2019, 25(4): 93-96.  DOI: 10.3969/j.issn.1006-8082.2019.04.024 Abstract ( )   PDF (703KB) ( )   Water shortage has become an important limiting factor for rice production in China. The emergence and development of dry direct seeding has provided new ideas for rice industry. Aiming at the problems of low precipitation and unreasonable utilization of irrigation water resource in western Heilongjiang province, a simplified cultivation technology system of rice direct seeding in dry land was established based on the research of varieties screening, mechanical seeding, weeding and water-saving irrigation techniques. The results showed that, compared with the traditional transplanting and submerged irrigation cultivation mode, the simplified cultivation mode had significant water-saving effect, which could save water 2 435.0 m3 per hectare, and the water saving rate was 19.78%. At the same time, it could significantly reduce the manual operation process, simplify and save labor, and was conducive to large-scale operation. Under the simplified mode, the cost could be saved by 3 237.0 yuan per hectare and the economic benefit could be increased by 3 974.1 yuan per hectare, which increased by 33.2%.

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Characteristics of Guihongnuo 1 and Its Mechanized Cultivation Techneques 2019, 25(4): 97-98.  DOI: 10.3969/j.issn.1006-8082.2019.04.025 Abstract ( )   PDF (304KB) ( )   The development of glutinous rice industry is of great significance to improve the efficiency of the farmers. Guihongnuo 1 is a red glutinous inbred rice cultivar, bred by Rice Research Institute of Guangxi Academy of Agricultural Sciences. The experiment results showed that, in order to obtain high yield of Guihongnuo 1, it is necessary to appropriately increase sowing rate, improve the mechanical transplanting density, and reasonable control of nitrogen fertilizer. The characteristics of Guihongnuo 1 and its mechanized transplanting techniques are introduced in this paper.

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Preliminary Report on Effects of Biological Rice Seedling-growth Regulator 2019, 25(4): 99-101.  DOI: 10.3969/j.issn.1006-8082.2019.04.026 Abstract ( )   PDF (424KB) ( )   At present, the germicidal component of the rice seedling-growth regulator widely used in Heilongjiang province is relatively single, which has made the main pathogenic bacteria in seedling bed appear serious resistance. In order to solve this problem, a comparison test was carried out to study the effects of seedling-growth regulator on rice seedling quality, seedbed disease, number of pathogens in soil and plant biological characteristics in fields in 2018. The results showed that the biological rice seedling-growth regulator had positive effects on the growth of rice seedlings, and had a good control effect on diseases.

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Effects of Different Planting Patterns on Rice Quality and Starch RVA Characteristics of Nangeng 46 2019, 25(4): 102-103.  DOI: 10.3969/j.issn.1006-8082.2019.04.027 Abstract ( )   PDF (229KB) ( )   The effects of “winter wheat-rice”, “rape-rice” and “green manure-rice” planting patterns on grain quality and starch RVA characteristics of Nangeng 46 were studied in this test. The results showed that the “rape-rice” planting pattern could increase the whole head rice rate and gel consistency, and decrease the amylose content. It was the most suitable planting pattern for Nangeng 46.

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Effects of Different Machine Transplanting Density on Spike Rate and Yield of Wuyungeng 31 2019, 25(4): 104-105.  DOI: 10.3969/j.issn.1006-8082.2019.04.028 Abstract ( )   PDF (244KB) ( )   In order to determine the mechanical planting density of medium tillers and medium panicle type rice varieties, discuss the effects of mechanical planting density on the yield and spike rate, an experiment was conducted using Wuyungeng 31 as material. The results showed that the yield was the highest when the plant spacing of Wuyungeng 31 is 29.7 cm×12.5 cm and 4 seedlings per hill, it had high spike rate, effective panicles and seed setting rate. It was the appropriate density of Wuyungeng 31 in production.

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Breeding and Application Prospect of New Rice Variety Suigeng 28 with High Quality, Stress Resistance and Aroma 2019, 25(4): 106-108.  DOI: 10.3969/j.issn.1006-8082.2019.04.029 Abstract ( )   PDF (418KB) ( )   New rice variety Suigeng 28, which crossed by Suigeng 4 and Suigeng 11 as female parent and male parent respectively with pedigree method combines the advantages of high quality, stress resistance and aroma characteristics. Suigeng 28 was released and popularized in 2018. In this study, the authors demonstrated breeding process and characteristics of this variety, and analyzed the future promotion and application prospects of this variety in Heilongjiang, which would provide some references for the breeding of high quality japonica rice cultivar in cold region.

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Effects of Side-deep Fertilization Technique on Single Cropping Late Rice 2019, 25(4): 109-110.  DOI: 10.3969/j.issn.1006-8082.2019.04.030 Abstract ( )   PDF (241KB) ( )   A field experiment was conducted to study the effects of different fertilization methods on yield and benefit of rice, using single cropping late rice Yongyou 1540 as material. The results showed that, compared with artificial fertilizer application method, the technique of side deep fertilization could reduce the amount of base fertilizer, accelerate the tillering speed of rice, increase the number of effective panicles and the yield of rice could be increased by more than 3%.

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Application of Rice Dry Direct Seeding Technology in Mountainous and Mid-levels of Yunnan Province 2019, 25(4): 111-113.  DOI: 10.3969/j.issn.1006-8082.2019.04.031 Abstract ( )   PDF (355KB) ( )   Dry direct seeding technology is a simple cultivation technology ,it can save labor and reduce labor intensity. In order to determine the application effects of dry direct seeding technology in mountainous and mid-levels of Yunnan province, a field experiment was conducted with 8 treatments according to cover film or not cover film and different amounts of nitrogen fertilizer, using  Chugeng 27 as material.The results showed that , F12 treatment （cover film, the amounts of nitrogen fertilizer is 180 kg/hm2） had the best effects on increasing grain yield and income. It could be widely used in mountainous and mid-levels of Yunnan province.

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Super-high Yield Cultivation Techniques of Zhongzheyou 10 as Ratoon Rice 2019, 25(4): 114-115.  DOI: 10.3969/j.issn.1006-8082.2019.04.032 Abstract ( )   PDF (298KB) ( )   Zhongzheyou 10 is a three-line hybrid rice, derived from sterile line Zhongzhe A and restorer line 06 zhi 7-10. It has the characteristics of high yield, fine quality, good plant type and lodging-resistant. It was suitable for planting as ratoon rice in ecological areas below 500 m above sea level. The authors summarized the technical measures of Zhongzheyou 10 as ratoon rice, in order to provide some references for the farmers.

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Study on Ecological Adaptability of Guiyu 8 2019, 25(4): 116-118.  DOI: 10.3969/j.issn.1006-8082.2019.04.033 Abstract ( )   PDF (361KB) ( )   In order to give full play to the application value of conventional rice variety Guiyu 8 with high yield and fine quality, the ecological adaptability experiment was carried out in the northern and alpine mountain areas in Guangxi province. The results showed that Guiyu 8 had good ecological adaptability. The average growth period and yield of Guiyu 8 planting as medium rice and late rice in northern and as medium rice in alpine areas of Guangxi province were 123 d and 7.32 t/hm2, 121 d and 7.70 t/hm2, 131 d and 7.53 t/hm2. Guiyu 8 showed relatively high yield, medium growth period planting as medium rice, but slightly longer growth period planting as double-cropping late rice. There was significant positive correlation between seed setting rate and actual yield（ r=0.76**）. The agronomic characters and comprehensive resistance of Guiyu 8 in the field were good, with no rice blast, bacterial blight and sheath blight. The grain quality of Guiyu 8 was excellent. Therefore, Guiyu 8 is suitable for planting as medium or one season rice in north of Guangxi province, and planting as medium rice in alpine areas of Guangxi province.