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2 试验处理设计

Table 2 Experimental design

年份/季节 Year/ Season 处理 Treatment 缩写 Abbreviation 总施 氮量 Total N input (kg·hm-2) 氮肥运筹比例Nitrogen fertilizer operation ratios (%) 基肥 Basal 回青肥 Recovering 促蘖肥 Early tillering 保蘖肥 Mid- tillering 长粗肥 Late tillering 叶龄余数3.5 Remaining leaf age 3.5 叶龄余数2.5 Remaining leaf age 2.5 叶龄余数1.5 Remaining leaf age 1.5 抽穗期 Heading stage 2018晚季 Late season of 2018 不施氮 No nitrogen application N0 0 三控 Three controls TC 180 40 20 30 10 三控减氮 Three controls with reduced nitrogen input RTC 162 40 20 30 10 轻简1 Simplified nitrogen management 1 SNM1 162 40 60 轻简2 Simplified nitrogen management 2 SNM2 162 40 60 轻简3 Simplified nitrogen management 3 SNM3 162 40 60 2019早季 Early season of 2019 不施氮 No nitrogen application N0 0 农民习惯 Farmers’ practice FP 180 30 20 30 20 三控 Three controls TC 150 40 20 30 10 轻简2 Simplified nitrogen management 2 SNM2 135 40 60 轻简4 Simplified nitrogen management 4 SNM4 150 40 60 轻简5 Simplified nitrogen management 5 SNM5 135 50 50