摘要
以超级稻德香4103、Q优8号和Ⅱ优602为材料,在13.0 kg/667 m2的氮肥供应水平下,研究了传统施肥、机插稻改进型施肥、机插稻优化型施肥等三种肥料配置方式对机插稻群体生长和产量的影响。结果表明,机插稻优化型施肥方式有利于机插稻优化群体,改善穗部产量性状,从而获得更高的产量。机插稻采用优化型施肥方式后本田分蘖更快,分蘖数能提早一周左右达到18万/667 m2,有效穗数虽有所降低,但穗部产量性状明显改善,表现为一次枝梗数增多,着粒数、结实率、千粒重提高,最终平均产量较传统施肥和机插稻改进型施肥方式高8.20%和3.78%。
Nitrogen fertilizer management is crucial for population regulation and nitrogen fertilizer supplying under certain nitrogen application. Using super rice Dexiang4103, Qyou8 and Eryou602 as materials, the effects of nitrogen fertilizer management on the population growth and yield were studied under certain nitrogen application level （13 kg/667 m2）. The nitrogen fertilizer management included traditional fertilizer management, improved fertilizer management for mechanical transplanted rice, optimized fertilizer management for mechanical transplanted rice. The results indicated that it was beneficial to optimizing population and improving panicle traits by using optimized fertilizer management for mechanical transplanted rice , so it gained higher yield. The tiller development was more quickly under optimized fertilizer management, and the time when tiller number reached 18×10^4 /667 m2 was one week earlier than others, the effective panicle was decreased, but the panicle traits included number of primary branches per panicle, grains per panicle and seed setting rate were improved. At last, the yield was higher 8.20% and 3.78% than traditional fertilizer management and improved fertilizer management for mechanical transplanted rice.
出处
《中国稻米》
2014年第2期45-49,共5页
China Rice
基金
"十二五"国家科技支撑计划项目(2012BAD04B13)
"十二五"国家科技支撑计划项目(2011BAD16B05)
农业部公益性行业(农业)科研专项"丘陵山地主要农作物机械化生产农艺规范研究与制定"(200903050-4)
国家公益性行业(农业)科研专项"西南水旱轮作区规模化周年高效生产技术研究与示范"(201303129)
农业部重大研究专项(超级稻配套栽培技术开发与集成)
四川省科技支撑计划项目"稻麦丰产高效生产技术集成与示范"(2010NZ0093)
关键词
水稻
机插
肥料配置方式
群体生长
产量
rice
mechanical transplanted rice
fertilizer management
population growth
yield
