江西农业学报2011，Vol.23Issue(1)：62-64,3.
麦稻两季秸秆还田不同施氮量对水稻产量及其产量结构的影响
Effects of Different Nitrogen Application Rates on Rice Yield and Yield Components under Condition of Returning Wheat Straw and Rice Straw to Field
摘要
Abstract
Under the condition of returning wheat straw and rice straw to the wheat - rice rotation cropping field, the effects of different nitrogen application rates (pure nitrogen 180,225 and 270 kg/hm2 in wheat cropping season; pure nitrogen 225,300 and 375 kg/hm2 in rice cropping season) on the yield and yield components of rice were studied. The results showed that the application rate of nitrogen in wheat cropping season had little influences on the yield, panicles per unit area, grains per panicle and 1000 - grain weight of rice (P ＞ 0.05 ). The effects of nitrogen application rate in rice cropping season on rice yield and its components were great, when the application rate of nitrogen increased from 225 kg/hm2 to 375 kg/hm2, the increase of panicles per unit area of rice was significant ( P ＜ 0.05 ), the number of grain per panicle of rice was effected little, but seed setting rate and 1000 - grain weight of rice were decreased, their differences between N 375 kg/hm2 treatment and N 225, 300 kg/hm2 treatments were significant ( P ＜ 0. 05). Rice yield increased along with the increase of nitrogen application rate in rice field, but there was no significant difference in rice yield between N 375 kg/hm2 treatment and N 300 kg/hm2 treatment (P ＞0.05).关键词
麦稻两熟制/秸秆还田/施氮量/水稻产量/水稻产量结构分类
农业科技引用本文复制引用
杨美英,刘建,魏亚凤,李波..麦稻两季秸秆还田不同施氮量对水稻产量及其产量结构的影响[J].江西农业学报,2011,23(1):62-64,3.基金项目
农业部公益性行业科研专项(200803028) （200803028）
国家863计划子课题(2007AA10Z221-2). （2007AA10Z221-2）
