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《China Rice》 2016-02
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Effects of Water Direct Seeding on Yield and Quality of Japonica Rice in Cold Area

ZHANG Xijuan;LAI Yongcai;MENG Ying;TANG Ao;DONG Wenjun;LENG Chunxu;JIANG Shukun;WANG Lizhi;JING Hui;DING Guohua;Cultivation and Farming Research Institute, Heilongjiang Academy of Agricultural Sciences;Northern Japonica Rice Molecular Breeding Joint Research Center, Chinese Academy of Sciences;Heilongjiang Academy of Agricultural Sciences Postdoctoral Research Station;  
Direct seeding rice has been expanding in Heilongjiang Province year by year. In order to understand the effects of water direct seeding cultivation techniques on yield and quality of rice in cold area, Hulin City and Fuyuan County, two larger water direct seeding rice producer of Heilongjiang Province were investigated. The results showed that the effect of water direct seeding on panicle length, primary branch number and secondary branch number of Jinhe 1 were less than Longjing 31. The yield of Jinhe 1 and Longjing 31 reached 7.78 t/hm2 and 8.73 t/hm2 under water direct seeding, respectively, significantly lower than transplanted rice. The low yield of water direct seeding was due to the signficant decreased in grain weight. The milled rice rate, head rice rate and protein content of Jinhe 1 and Longjing 31 of water direct seeding rice were lower than transplanted rice. The amylose content was higher than transplanted rice, but the difference were not significant. The chalky rice rate and chalkiness degree of Jinhe 1 under water direct seeding were significantly lower than transplanted rice. The chalky rice rate and chalkiness degree of Longjing 31 were not significant among different cultivation methods. The taste score of two varieties in two cultivation methods were also not significant.
【Fund】: 黑龙江省应用技术研究与开发计划项目(GA15B101);; 黑龙江省农业科学院引进博士人员科研启动金项目(201507-13)
【CateGory Index】: S511.22
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