轻简氮肥管理对华南双季稻产量和氮肥利用率的影响
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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
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Effects of Simplified Nitrogen Managements on Grain Yield and Nitrogen Use Efficiency of Double-Cropping Rice in South China
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PENG BiLin,LI MeiJuan,HU XiangYu,ZHONG XuHua,TANG XiangRu,LIU YanZhuo,LIANG KaiMing,PAN JunFeng,HUANG NongRong,FU YouQiang,HU Rui
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表1 2018年和2019年田间气象数据
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Table 1 Field weather conditions in cropping seasons of 2018 and 2019
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年份/季节
Year/Season | 生育阶段
Growth stage | 降雨量
Rainfall
(mm) | 平均日最高温
Average daily highest temperature (℃) | 平均日最低温
Average daily lowest temperature (℃) | 辐射量
Radiation
(MJ·m-2) | 2018晚季
Late season of 2018 | 移栽-穗分化始期 Transplanting-Panicle initiation | 292.8 | 32.2 | 24.8 | 173 | | 穗分化始期-抽穗期 Panicle initiation-Heading | 55.8 | 31.2 | 21.9 | 203 | | 抽穗-成熟期 Heading-Maturity | 136.8 | 25.6 | 17.7 | 126 | 2019早季
Early season of 2019 | 移栽-穗分化始期 Transplanting-Panicle initiation | 754.0 | 26.8 | 20.9 | 114 | | 穗分化始期-抽穗期 Panicle initiation-Heading | 383.8 | 30.5 | 24.5 | 139 | | 抽穗-成熟期 Heading-Maturity | 358.2 | 33.3 | 25.8 | 191 |
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