氮肥运筹方式对杂交粳稻申优17生长和产量的影响

通过不同氮肥施用量和氮素穗肥占比的处理,研究了氮肥运筹对申优17产量及其相关农艺性状的影响。结果表明,氮肥运筹方式影响申优17产量构成和农艺性状,形成产量差异。总氮施用量240 kg/hm 2、穗肥氮占比30%时,能够协调有效穗数、穗粒数和结实率等产量因素之间的关系,有利于大穗的形成,从而获得高产。在水稻生产中,通过控制氮肥用量和优化穗肥占比,可以获得最优农艺性状,达到高产的目标。

Effects of Nitrogen Fertilizer Application on Growth and Yield of Japonica Hybrid Rice Shengyou 17

The effects of nitrogen application on yield and related agronomic traits of Shenyou17 were studied through different treatments of total nitrogen fertilizer and the proportion of nitrogen fertilizer per ear.The results showed that nitrogen fertilizer application affected the yield components and agronomic characters of Shenyou17 which led to the variation of yields.When the total nitrogen fertilizer amount was 270 kg/hm 2 and ear fertilizer accounted for 30%,it could coordinate the relationship among yield factors such as available panicle number,grains per panicle and filling rate,which was benefit to the formation of large panicle and obtain high yield.In rice production,the optimal agronomic characters can be obtained and the goal of high yield can be achieved by controlling the amount of nitrogen fertilizer and optimizing the proportion of panicle fertilizer.