轻简氮肥管理对华南双季稻产量和氮肥利用率的影响

彭碧琳,李妹娟,胡香玉,钟旭华,唐湘如,刘彦卓,梁开明,潘俊峰,黄农荣,傅友强,胡锐

Effects of Simplified Nitrogen Managements on Grain Yield and Nitrogen Use Efficiency of Double-Cropping Rice in South China

PENG BiLin,LI MeiJuan,HU XiangYu,ZHONG XuHua,TANG XiangRu,LIU YanZhuo,LIANG KaiMing,PAN JunFeng,HUANG NongRong,FU YouQiang,HU Rui

表7 不同阶段植株吸氮量与氮肥利用效率指标的相关性分析

Table 7 Correlation analysis between nitrogen use efficiency and nitrogen uptake at different growth stages

生长期Growth stage 氮肥吸收利用率RE 氮肥农学利用率AE 氮肥偏生产力PFPN 移栽-穗分化始期 (Transplanting-Panicle initiation) -0.195 -0.019 -0.474** 穗分化始期-抽穗期 (Panicle initiation-Heading) 0.309* 0.364* 0.540** 抽穗-成熟期 (Heading-Maturity) 0.490** -0.073 -0.039 总吸氮量 Total nitrogen accumulation 0.930** 0.404** 0.210