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20 January 2016, Volume 22 Issue 1 Previous Issue    Next Issue

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Research Progress of Homeoboxgene in Rice HAO Hao-1 2, CUI Yong-Tao-2, QIAN Qian-2*, MA Bo-Jun-1, HU Xing-Ming-2 2016, 22(1): 1-9.  DOI: 10.3969/j.issn.1006-8082.2016.01.001 Abstract ( )   PDF (926KB) ( )   Eucaryon homeobox genes contain a conserved 180 bp long DNA sequence termed as homeobox, which encodes about 60 amino acid long DNA-binding domain termed as homeodomain. Homeobox genes as the plant transcription factors play an important role in morphological development, reproductive development and abiotic stress response. In recent years, several homeobox genes have been identified and cloned in the some model plant, such as Arabidopsis, Oryza sativa, and classified into different subfamilies, based on the amino acid sequence of HD（homeodomain） and other conserved intron-exon structure. Based on existing understanding of homeobox genes in plants, this article reviewed homeobox genes classification, structure and the mutations functions in recent years and also prospected the function and applied research of rice homeobox genes in Oryza sativa.

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Review on Rice Quality Formation and its Regulation Mechanism 2016, 22(1): 10-13.  DOI: 10.3969/j.issn.1006-8082.2016.01.002 Abstract ( )   PDF (671KB) ( )   This paper introduced the evaluation criteria of rice quality, for rice appearance quality, milling quality, cooking quality, eating quality and nutrition quality, according to the research of rice quality in China and abroad. Moreover, the mechanism of the rice quality formation was discussed, which mainly included the relationship between the organization structure, the material basis and the rice quality, as well as the influence factors in different growth stages of the formation of the rice quality. Furthermore, in this paper, the influencing factors of the rice quality was analyzed from genetic characteristics and environmental factors. In conclusion, starch and protein play an important role in rice quality formation. And the change of environmental factors would affect the synthesis and accumulation of starch. The environmental factors covered temperature, light, CO2 and others. In the background of global climate change, we should take appropriate measures to adjust to the influence of the increasing of the temperature and the CO2 density, so as to improve rice quality. It should be regarded as one of the research direction about improving rice quality in future.

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Adaptability of Prevention and Control Techniques for Increasing Rice Income and Reducing Pesticide Usage on Main Diseases and Insect Pests in Rice 2016, 22(1): 14-18.  DOI: 10.3969/j.issn.1006-8082.2016.01.003 Abstract ( )   PDF (587KB) ( )   Large scale field trials were conducted to investigate the adaptability of prevention and control techniques for increasing rice income and reducing pesticide usage on main diseases and insect pests in rice （hereinafter referred to as the new techniques） in Jianghua （outbreak area of Southern rice black-streaked dwarf virus （SRBSDV））and Liling （mechanical transplanting rice area） in 2014. The results showed that the main diseases and insect pests, including SRBSDV, Rhizoctonia solani（Kühn）, Cnaphalocrocis medinalis（Guenée）, Chilo suppressalis （Walker） and Nilaparvata lugens （Stal）could be prevented and controlled effectively, and the control efficacies were 95.70%~100.00%, 60.36%~84.84%, 80.73%~90.41%, 95.77% and 74.31%~82.06%, respectively. Pesticide usage of the new techniques was reduced by 55.62%~78.25% compared with the normal techniques. However, the rice income from the new techniques was increased by 209.73~289.35 yuan/hm2 compared with the normal techniques.

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Status and Suggestion on Industrialization of Colored Rice in Hunan 2016, 22(1): 19-21.  DOI: 10.3969/j.issn.1006-8082.2016.01.004 Abstract ( )   PDF (483KB) ( )   The current situation on colored rice industrialization in Hunan were summaried in this paper, from colored rice varieties related planting area, production bases, companies and exploitation profits. Three key problems in the process of colored rice industrialization of hunan were analyzed. Base on this, some development suggestion were proposed.

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Research on Genetic Background of Main Cultivated Glutinous Rice in Heilongjiang Province 2016, 22(1): 22-24.  DOI: 10.3969/j.issn.1006-8082.2016.01.005 Abstract ( )   PDF (477KB) ( )   The genetic backgrounds of main glutinous rice were analyzed in this study, which were approved in recent years in Heilongjiang Province. The author tries to find out the mainstay parents in pedigree, provides theoretical basis for glutinous rice variety breeding and improvement. The results showed that most of the glutinous rice approved contain the consanguinity of Japanese rice, some mainstay parents can directly breed or derived glutinous rice varieties and lay the foundations for the breeding of glutinous rice. The authors suggested that future breeding program, emphysives on the selection and utilization of mainstay parents.

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Study on Accumulation Characteristics of Nitrate-N and Ammonia-N in Grain of Rice and Regulation of N-fertilizer 2016, 22(1): 25-29.  DOI: 10.3969/j.issn.1006-8082.2016.01.006 Abstract ( )   PDF (551KB) ( )   Based on the field and pot culture experiment of five japonica rice varieties, the content and distribution character of nitrate-N and ammonia-N in the endosperm, their variable trend during the grain filling period and the correlations of N-fertilizer with the enzyme activity of GS among different varieties were analyzed. The results indicated that there was a difference between nitrate-N and ammonia-N content in the mature grain among the rice varieties. The content of ammonia-N is higher than nitrate-N, which both mainly located in rice bran and showed a decline trend from outside to inside. Increasing the N-fertilizer amount led to the increase in the nitrate-N and ammonia-N level by 114.1%~203.0% depending on different varieties; As application of N-fertilizer level raised, each content showed a significant growth. During the filling period, the nitrate-N content in endosperm kept raising until the mature stage, while the accumulation amount of nitrate-N and the content of ammonia-N showed a unimodal curve trend with peak value appearring at the 25th day after heading. Comparing with low nitrate-N content varieties, the daily average growth of nitrate-N was extremely higher than the high content varieties. However, the daily average growth of ammonia-N was lower than the high ammonia-N content varieties at early grain filling stage, but higher at late stage than the low Ammonia-N content varieties. The enzyme activity of GS showed significant difference among different variaties at each stage, having a outstanding positive linear correlation to the content and accumulation rate of ammonia-N and nitrate-N.

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Effects of the Combined Application of Silicon and Nitrogen Fertilizer on Photosynthetic, Chlorophyll fluorescence and Yield of Rice 2016, 22(1): 30-34.  DOI: 10.3969/j.issn.1006-8082.2016.01.007 Abstract ( )   PDF (670KB) ( )   In order to investigate regulating effects of combined application of nitrogen and silicon fertilizer on photosynthesis and chlorophyll fluorescence parameters, and intrinsic physiological basis about silicon-nitrogen fertilizer regulation of photosynthesis in rice, using super rice Guangliangyou 476 as material, two nitrogen levels and three levels of silicon fertilizer in field experiment were applied . The results showed that increasing nitrogen and silicon can improve rice leaf chlorophyll content, photosynthesis under low nitrogen high silicon levels and higher nitrogen middle silicon levels processing strongest, appropriate nitrogen fertilization in favor of reduced non-radiative energy dissipation of rice, will absorb more light energy for photochemical reaction. Increasing silicon fertilizer can effectively improve the chlorophyll fluorescence parameters of indicators and the performance photosynthesis of rice leaf under low nitrogen levels, but under high nitrogen conditions, along with the amount of silicon increased the initial fluorescence （F0）, non-photochemical quenching coefficient （NPQ） were increased after the first cut, and PSⅡ potential activity （Fv/F0）, the actual photochemical efficiency （ΦPSⅡ） were increased and then decreased. This showed that silicon overdose photochemical efficiency will lead to a decline. Effects of silicon-nitrogen interaction were significantly on rice photosynthetic indexes, silicon fertilizer can effectively improve the performance of rice leaf photosynthesis under low nitrogen levels, and the appropriate amount of silicon is 37.5 kg/hm2 under high nitrogen levels, then the light use efficiency is highest, and conducive to the formation and accumulation of photosynthetic products for high-yield cultivation.

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Effects of Phosphorus Levels on Growth, Grain Yield and Phosphorus Use Efficiency of Super Rice in Early Season 2016, 22(1): 35-38.  DOI: 10.3969/j.issn.1006-8082.2016.01.008 Abstract ( )   PDF (460KB) ( )   In order to study the effects of different phosphorus content on growth, yield and nitrogen and phosphorus uptake of super early rice, a field experiment was conducted in 2012 with super rice Zhongzao 39 and conventional rice Jinzao 09 as materials. The results showed that the biomass of Zhongzao 39 was significantly lower than Jinzao 09 under P0 and P1 treatments at mid-tiller stage. However, the biomass and yield of Zhongzao 39 was significantly higher than Jinzao 09 among all phosphorus treatments at heading and maturity stage. The panicle number of two varieties increased significantly after phosphorus application, but the panicle number of Zhongzao 39 was no significant difference between P1 and P2. The nitrogen and phosphorus uptake, phosphorus recovery efficiency, and partial factor productivity of applied phosphorus of Zhongzao 39 was higher than Jinzao 09, but the phosphorus agronomic efficiency of Zhongzao 39 was lower than Jinzao 09. With phosphorus rates increasing, the increasing percentage of panicle and yield of Zhongzao 39 was lower than Jinzao 09, and the decreasing percentage of phosphorus recovery efficiency, phosphorus agronomic efficiency and partial factor productivity of applied phosphorus of Zhongzao 39 was higher than Jinzao 09. In conclusion, Zhongzao 39 was lower phosphorus sensitive than Jinzao 09, and 30 kg/hm2 phosphorus applied level was better choice for Zhongzao 39.

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Analysis of the Quality Characteristics of Daohuanxiang Variety in Different Areas of Heilongjiang Province 2016, 22(1): 39-42.  DOI: 10.3969/j.issn.1006-8082.2016.01.009 Abstract ( )   PDF (600KB) ( )   In view of the Daohuaxiang rice quality degradation year by year in Heilongjiang Province, quality chracteristics of Daohuaxiang from different sources in Heilongjiang Province were analyzed. The objective was to find out the present variety quality of Daohuaxiang and to discuss factors which influence the variety quality of Daohuaxiang. The results showed that Daohuaxiang from the different sources due to different soil, fertilizer and rainfall conditions, presented different sensory quality. Daohuaxiang from Wuchang has higher sensory scores. Compared to control sample Kongyu 131, 75.00% of the samples showed superior scores to Kongyu 131, which indicated that the varieties of Daohuaxiang are of good quality. The protein content, amylose content, head rice rate, chalkiness rate, chalkiness degree, pasting temperature, peak time etc, have greater impact on the sensory quality of Daohuaxiang.

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Effects of VIP Technology on Reducing Cadmium Content in Rice 2016, 22(1): 43-47.  DOI: 10.3969/j.issn.1006-8082.2016.01.010 Abstract ( )   PDF (568KB) ( )   The cadmium pollution of rice become increasingly serious, which caused enormous threats to human health and agricultural production. In order to find an effective way to control the cadmium content in rice, to meet the national safety levels and to provide a theoretical basis for the subsequent test, this study took the low-cadmium accumulation rice Xiangwanxian 12 as the experimental material by applying the randomized blocks design to explore and compare with five control technologies including VIP [low cadmium species（variety） + reasonable irrigation （irrigation）+ adjust the acidity （pH）] and 12 test points that have different soil parent materials and extent of soil contamination. The result showed that the effect of “VIP + Se” and “VIP + Se + Bi” treatment were better than other treatments, and the effects of cadmium reduction were significant compared with the control.

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Historical Change, Influence and Future Discussion for Regulation Strategy on Rice Price in China 2016, 22(1): 48-54.  DOI: 10.3969/j.issn.1006-8082.2016.01.011 Abstract ( )   PDF (1032KB) ( )   The paper summarized the development history of rice price system, and reviewed three 3 importmant rice price events since 1949 in China, analysed the chief reasons of rice price rise, including the relationship between supply and demand, monetary effects etc, compared the price changes of rice, wheat and corn since 2011 in China and abroad, pointed possible tendency, and discussed rice price regulation policies in the future.

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Effects of Nitrogen Application on Nutrient Absorption, Transportation and Distribution in Super Rice Wufengyou T025 2016, 22(1): 55-58.  DOI: 10.3969/j.issn.1006-8082.2016.01.012 Abstract ( )   PDF (489KB) ( )   Late super hybrid rice Wufengyou T025 was used to investigate the effects of different nitrogen（N） application on absorption, transportation and distribution of nutrient and yield in rice. The results showed that there was an obvious interaction N application on N, phosphorus（P）, potassium（K） absorption and transfer at different growth stages under N application, and the reasonable N application is benefit to promote the absorption of various nutrients and transfer. In this experiment, the nutrient transfer amount and the contribution rate of nutrient to panicle of leaves and stem-sheaths were increased with the increase of the percentage of tillering fertilizer in N fertilizer. The amount of N, P, K nutrient transfer increased up to 17.1%, 21.2% and 14.8%, respectively. Under the total pure nitrogen amount of 195 kg/hm2，the best model of the N application is basal（50%）, tillering（20%）, and panicle （30%）.

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Effects of Drought and Re-watering on Rice Physiological and Biochemical Indexes of Leaves and Grain Yield at Booting Stage 2016, 22(1): 59-64.  DOI: 10.3969/j.issn.1006-8082.2016.01.013 Abstract ( )   PDF (664KB) ( )   Although the study on drought damage mechanism of leaf cells and physiological and biochemical indexes of rice is rich and comprehensive, the study on the subsequent physiological changes after re-watering is still less. In this study, two rice varieties with different drought resistance ability, Zhonghan3（resistant） and Huanghuazhan （non-resistant）, were used. Four treatments including flooding （CK）, low drought stress （LD）, moderate drought stress （MD） and high drought stress （HD） were implemented at booting stage. The effects of drought stress on rice leaf physiological and biochemical traits（photosynthesis, GS, SPAD, antioxidant enzyme activity, and MDA） and grain yield were studied. The main results are as follows : 1） In MD and HD treatments, Pn of rice leaves decreased by 12.9%~43.9% which mainly related to Gs, while LD treatment have no significant difference in physiological and biochemical traits of leaf compared to CK. 2） After re-watering, all indices of leaf physiology and biochemistry for Zhonghan 3 could return to normal status under all treatments, whereas in Huanghuazhan, the target traits under LD and MD treatments could return to normal, and the HD influence could not recover after re-watering. 3） Drought stress made grain yield reduced by 14.3%~47.9% which mainly caused by the significant reduction of effective panicles and seed setting rate.

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Discussion on Key Problems of Organic Rice Production in Rice-duck Farming System 2016, 22(1): 65-67.  DOI: 10.3969/j.issn.1006-8082.2016.01.014 Abstract ( )   PDF (460KB) ( )   The current study was conducted in Jiangyin which was mainly focused on organic rice production and security technology of duck raised, namely rice-duck farming from 2011 to 2013. The results showed that the key to achieve high grain yield was to improve seedling density under the culture of rice-duck farming; forty degrees is the highest temperature that duck survived in paddy field. During continuous high temperature（36℃~38.5℃）, it could effectively prevent the ducks died of sunstroke by irrigating 20 cm deep layer water and adopting irrigation and drainage method; combining two piece of paddy field into a compound unit, with the method of field draining in turn, the water during mid and late rice growth period could be effectively managed.

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The Super High Yield Cultivation Techniques of Rice Mechanical Precise-quantity Dry Hill-seeding in South Xinjiang Reclamation Corps 2016, 22(1): 67-69.  DOI: 10.3969/j.issn.1006-8082.2016.01.015 Abstract ( )   PDF (420KB) ( )   In 2013-2014, the experts of Ministry of Agriculture, Science and Education Division measured the real field output in the demonstration fields of the first division of South Xinjiang Reclamation Corps. In 2013, the average yield was 1 029.4 kg/667 m2. In 2014, the average yield was 1 042.97 kg/667 m2. This has created a national record of rice mechanical precise-quantity dry hill-seeding. In this article, the author summarized the production process of rice mechanical precise-quantity dry hill-seeding from preparation, sowing technique, water management, fertilization, pest control techniques, harvesting and so on. This will provide a reference for rice super high yield and stable yield planting.

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The Requirement Rule of N, P, K Nutrient and Fertilization Effect Model of Yongyou 12 2016, 22(1): 70-73.  DOI: 10.3969/j.issn.1006-8082.2016.01.016 Abstract ( )   PDF (590KB) ( )   The “3414” application design of N, P, K nutrient was tested in rice field to provide the optimum application formulation for hybrid rice Yongyou 12. The results indicated that the yield could increased by 20% at least with N, P, K application. The requirement of N, P, K followed a power function relationship and the whole dimension requirement of N+P+K（M） was more than the sum of each single dimension requirement, followed by mathematical models: Y=-0.7744N2+18.565N+510.01（r=0.9634*）, Y=3.0931P2-8.6161P+604.66（r=0.9999**）, Y=-3.3975K2+35.733K+521.45（r=0.9841*）, Y=-0.1239M2+8.4834M+489.36（r=0.8010**）. The highest yield could be obtained when application amount of pure N, P2O5 and K2O was 14 kg, 7 kg and 13 kg per 667 m2 in the test according to the models. Thus, in order to achieve optimum relationship between group and individuals and to produce more and large panicles, the super high yield cultivation of Yongyou 12 should base on the whole dimension requirement model and supplemented by organic fertilizer and micronutrient.

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Effects of Seeding Rate and Dosage of Seedling Strengthen Agent on Seedling Quality and Yield of Early-season Indica Rice Zhongzao39 2016, 22(1): 74-76.  DOI: 10.3969/j.issn.1006-8082.2016.01.017 Abstract ( )   PDF (307KB) ( )   Using the early-season indica rice Zhongzao 39 as material, the tests concerning different seeding rate and dosage of seedling strengthen agent were conducted. The results indicated that the proper seeding rate is 125~150 g per disk and the reasonable dosage of seedling strengthen agent is 50~75 g/m2.

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High Yield Cultivation Techniques of Machine Transplanting Rice Nanjing 9108 in Large-scale Production 2016, 22(1): 77-78.  DOI: 10.3969/j.issn.1006-8082.2016.01.018 Abstract ( )   PDF (317KB) ( )   The authors summed up the existing problems of machine transplanting rice Nanjing 9108 in large scale production by means of experiment and demonstration, and put forward the suggestions for high yield cultivation in this paper.

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Application Effect of New Fertilizer “Fenghui Urea” on Rice 2016, 22(1): 79-81.  DOI: 10.3969/j.issn.1006-8082.2016.01.019 Abstract ( )   PDF (356KB) ( )   Take common urea as the control, to explore the impact of reducing the usage amount of “Fenghui urea” on rice Wuyunjing 20 growth and yield. The results showed that the rice with reducing 20% usage amount of “Fenghui urea” had the same yield as CK, the yield decreased 22.5 kg/667 m2 by reducing 30% usage amount of “Fenghui urea”, the difference was not significant, but was significant with 50% reduction.

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Effects of Different Planting Density on Economic Traits and Yield of D-you 3138 2016, 22(1): 82-83.  DOI: 10.3969/j.issn.1006-8082.2016.01.020 Abstract ( )   PDF (277KB) ( )   In order to study and explore the reasonable planting density of new hybrid rice combination D-You 3138, 6 different transplanting densities were designed. The results showed that the yield was the highest when the density was 187 500 /hm2, and has significant difference with 75 000 /hm2, 112 500 /hm2 and 262 500 /hm2 treatments.

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tudy on Soil Testing and Formulated Fertilization Technology for Mechanical-transplanted Late Rice on Large-scale Planting 2016, 22(1): 84-87.  DOI: 10.3969/j.issn.1006-8082.2016.01.021 Abstract ( )   PDF (488KB) ( )   The study aimed to investigate the application of soil testing and formulated fertilization technology in mechanical-transplanted late rice. Typical large-scale planted high-yielding fields and low-yielding fields were selected as the study sites. The formulated fertilization plan was made according to the soil fertility, seedling quality and weather conditions. The results indicated that, through soil testing and formulated fertilizing, the total amount of N fertilizer, fertilizer types and the fertilization ways were optimized, which can achieved the goal of cost saving, production and efficiency increasing. This fertilizing pattern showed great application value in rice production.

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Breeding and Utilization of Late Medium Japonica CMS Line Chunjiang 99A with High Stigma Exsertion Rate 2016, 22(1): 87-89.  DOI: 10.3969/j.issn.1006-8082.2016.01.022 Abstract ( )   PDF (392KB) ( )   Chunjiang 99A is a late medium Japonica CMS line, developed through crossing Chunjiang 99B （Chunjiang 19B×Chunjiang 099） to Chunjiang 16A and successively backcrossing with Chunjiang 99B as recurrent parent, It was registered and released by Zhejiang Provincial Crop Variety Appraisal Committee in 2014. Its percentage of sterile plants was 100%, and its pollen sterility was 99.99%. It had the characteristics of high stigma exsertion rate, early flowering, high outcrossing rate, good plant type, pale green leaf and good combining ability. Its F1 hybrids especially for Japonica-Indica cross hybrids showed dominant heterosis, light leaf color, strong lodging resistance, short whole growing period and good color change in mature stage.

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Effects of Different Nitrogen Fertilizer Treatments on Yield and Quality of Suijing 4 2016, 22(1): 90-91.  DOI: 10.3969/j.issn.1006-8082.2016.01.023 Abstract ( )   PDF (306KB) ( )   The effects of different nitrogen fertilizer treatments on yield and quality of Suijing 4 were analyzed. The results showed that increasing nitrogen application amount would increase the yield of Suijing 4. The highest yield is under the condition of nitrogen fertilizer 162 kg/hm2，base tiller fertilizer and panicle fertilizer ratio is 8∶2. Increasing nitrogen application amount would improve the processing quality, but reduce the eating quality. The processing quality is the best, when the rate of base tiller fertilizer and panicle fertilizer is 7∶3. Taste score is the highest, when the rate of base tiller fertilizer and panicle fertilizer is 10∶0.

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Effects of Extreme High Temperature on Growth Characteristics of Indica Hybrid Rice 2016, 22(1): 92-94.  DOI: 10.3969/j.issn.1006-8082.2016.01.024 Abstract ( )   PDF (299KB) ( )   The growth characteristics of indica hybrid rice in the large area were investigated under the extreme high temperatures. The results showed that the varieties of indica hybrid rice have strong resistance to high temperature in current rice production; different varieties of indica hybrid have different ability of resistance to high temperature; in a certain range, the sowing time is earlier, the influence of extreme hot weather on the yield of indica hybrid rice would be bigger.

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Breeding and Key Cultivation Techniques of Hybrid Combination Chuanxiangyou 37 with High Amylose Content 2016, 22(1): 95-96.  DOI: 10.3969/j.issn.1006-8082.2016.01.025 Abstract ( )   PDF (292KB) ( )   Chuanxiangyou 37 is a new mid-late indica hybrid combination with three sterile line Chuanxiang 29A as female parent, restoring line Luhui 37 as male parent, bred by Institute of Rice and Sorghum, Sichuan Academy of Agricultural Science. It was approved by Sichuan Provincial Crop Variety Appraisal Committee in 2013. It has some characteristics including high amylose content, high yield, stable yield, wide adaptability and high blast-resistance. It is adapted for hilly-gully region in Sichuan Province.

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Breeding and Application of Restorer Lines Luhui 37 with High Blast Resistance in Hybrid Rice 2016, 22(1): 97-99.  DOI: 10.3969/j.issn.1006-8082.2016.01.026 Abstract ( )   PDF (362KB) ( )   Luhui 37 is a restorer line bred by Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences, using F7 of Shuhui 527 and Duohui 57, and 04R-1051, resistance to rice blast, as materials, Luhui 37 containing Pikm and Pik-1 resistance genes, has the characteristics of high blast resistance, combining ability, restoring force and high seed yield. Luhui 37 was approved by Sichuan Provincial Crop Variety Appraisal Committee in 2013. The combinations of the restorer line have high yield, strong resistance and adaptability, among them, Chuanxiangyou 37 was approved by Sichuan Provincial Crop Variety Appraisal Committee in 2014.

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Breeding and Cultivation Techniques of Fine Quality Rice Variety Mudanjiang 32 in Cold Areas 2016, 22(1): 100-101.  DOI: 10.3969/j.issn.1006-8082.2016.01.027 Abstract ( )   PDF (291KB) ( )   Mudanjiang 32 is a medium maturing variety, bred by Mudanjiang Branch, Academy of Agricultural Sciences of Heilongjiang Province, with fine quality, high yield, disease resistance, resistance to cold, strong adaptability and other characteristics. It was approved by Heilongjiang Provincial Crop Variety Approval Committee in 2013, and suitable for planting in the second accumulated temperature areas of Heilongjiang Province.

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Characteristics and High-yielding Cultivation Techniques of Hybrid Ｒice Yexiangyou 9 2016, 22(1): 102-,105.  DOI: 10.3969/j.issn.1006-8082.2016.01.028 Abstract ( )   PDF (284KB) ( )   From 2012 to 2014, after 3 years of demonstration and propagation, the three-line hybrid rice Yexiangyou 9 showed the characteristics of high yield, fine quality, robust stem, long panicle and good resistance. The high-yielding cultivation techniques of Yexiangyou 9 are as follows: sowing in time, rational planting density, applying enough basal fertilizer, early applying of re-green fertilizer, applying of tiller fertilizer, rational irrigation and control of pest and disease.

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Breeding Practices and Perspectives of Black Rice in Ledong Basin of Hainan Province 2016, 22(1): 103-105.  DOI: 10.3969/j.issn.1006-8082.2016.01.029 Abstract ( )   PDF (410KB) ( )   Black rice is a kind of whole-grain cereal, which has abundant nutrients and many health benefits. In Ledong basin of Hainan Province, it has unique ecological environment for breeding black rice. Two main technical ways, such as multiple crossing and population selection have been carried out. In the past ten years, two black rice new varieties have been officially registered, and some breeding lines attended regional tests. The breeding techniques of black rice, variety characteristics and cultivation techniques were summarized, and new perspectives for future breeding of black rice and utilization of anthocyanin of black rice were also proposed.

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Breeding and Application of New Japonica Rice Variety Lijing 14 2016, 22(1): 106-108.  DOI: 10.3969/j.issn.1006-8082.2016.01.030 Abstract ( )   PDF (450KB) ( )   Lijing 14 was a new japonica rice variety, bred with Qingjing 12 as female parent, Lijing 04-6 as male parent by Ljjing Institute of Agricaltural sciences, Yunnan Academy of Agricultural Sciences. The average yield of two year regional test and one year production test was 618.1 kg/667 m2 and 693.2 kg/667 m2, respectively, the yield increased by 21.82% and 9.53% compared with the control variety Fengdao 23. It was registered and released by Yunnan Provincial Crop Variety Appraisal Committee in 2014. It was suitable for planting at 1 850~2 200 m altitude of Yunnan Province.

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Growth Characteristics and Technology Regulation of Machine-transplanted Rice Nanjing 9108 2016, 22(1): 109-111.  DOI: 10.3969/j.issn.1006-8082.2016.01.031 Abstract ( )   PDF (444KB) ( )   The growth characteristics and cultivation techniques of machine transplanted rice Nanjing 9108 with wheat straw returning were studied, in order to promote the development of high quality rice industry in Huai’an City, Jiangsu Province from 2011 to 2014. The research revealed the yield structure, agronomic traits and quality parameters of Nanjing 9108 with full wheat straw returning, and integrated the technical specifications of cultivation, in order to provide some technical references to large-scale production of Nanjing 9108 in Huai’an City and similar ecological areas.

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Breeding and Utilization of New Japonica Rice Variety Huaixiangjing 15 2016, 22(1): 112-113.  DOI: 10.3969/j.issn.1006-8082.2016.01.032 Abstract ( )   PDF (257KB) ( )   Huaixiangjing 15 is a new late maturity japonica rice cultivar, bred by Huaiyin Academy of Agricultural Sciences of Jiangsu Province. Huaixiangjing 15 was approved by Jiangsu Provincial Crop Variety Approval Committee in 2014. Huaixiangjing 15 has good eating quality and high yield. The breeding process, characteristics and its high yield cultivation techniques were described in this paper.

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Screening Test of Insecticides to Control Rice Planthoppers in Single Late Rice 2016, 22(1): 114-116.  DOI: 10.3969/j.issn.1006-8082.2016.01.033 Abstract ( )   PDF (380KB) ( )   The effects of six insecticides to control rice planthoppers were measured in field of single late rice. The results showed that dinotefuran 20% WP（30 g/667 m2）, pymetrozine-nitenpyram 60% WG（12 g/667 m2） and pymetrozine-nitenpyram 80% WG （10 g/667 m2） effectively decreased the population of rice planthoppers, especially in the low instar nymphs. The effects of pymetrozine-nitenpyram 60% WG and pymetrozine-nitenpyram 80% WG were better in high instar nymphs. Meanwhile, these two insecticides had high-speed effect and safety to natural enemies of pests. In addition, the effect of nitenpyram 50% WP was poor-speed but long duration. However, the effect of imidacloprid 10% WP （50 g/667 m2） on planthoppers was low, even had no effect on high instar nymphs. Furthermore, the chlorpyrifos 40% EW （100 mL/667 m2） and sulfoxaflor 22% SC （14 mL/667 m2） had slow action and short duration, and were harmful to nature enemies. Taken together, one powerful approach for rice planthoppers control was declared in the paper. The approach is the alterative use of pymetrozine 50% WP, dinotefuran 20% WP and pymetrozine-nitenpyram 60% WG during the low instar stages and the peak of incubation period.

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High Yield Cultivation Techniques of Rice in Dali 2016, 22(1): 116-117.  DOI: 10.3969/j.issn.1006-8082.2016.01.034 Abstract ( )   PDF (277KB) ( )   The high yield cultivation techniques of rice in Dali City, Yunnan Province was introduced in this paper. The cultivation techniques include variety selection, dry seedling with strong tillers, reasonable and shallow planting, soil testing and accurate fertilization, scientific water management, green pest prevention and control.