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6 不同氮肥管理下水稻的氮素利用效率
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Table 6 Nitrogen use efficiency of rice under different nitrogen managements
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年份/季节
Year/Season | 处理
Treatment | 氮肥吸收利用率
RE (%) | 氮肥农学利用率
AE (kg·kg-1) | 氮肥生理利用率
PE (kg·kg-1) | 氮肥偏生产力
PFPN (kg·kg-1) | 氮素收获指数
NHI (%) | 2018晚季
Late season of 2018 | TC | 38.63±3.11a | 20.29±0.97ab | 53.23±3.48b | 45.01±0.97b | 72.55±0.67ab | | RTC | 31.46±2.27b | 18.16±0.72bc | 58.49±4.29ab | 45.62±0.72b | 73.76±0.76a | | SNM1 | 26.49±1.33b | 17.95±0.87bc | 67.98±2.97a | 45.40±0.87b | 70.28±0.46b | | SNM2 | 43.48±2.44a | 21.41±1.42a | 49.93±5.07b | 48.87±1.42a | 72.78±1.58ab | | SNM3 | 28.16±1.17b | 17.31±0.93c | 62.05±5.24ab | 44.77±0.93b | 73.33±0.13a | | F值（F value） | | 9.95** | 3.49* | 2.63ns | 3.22ns | 2.22ns | 2019早季
Early season of 2019
| FP | 20.62±4.56b | 11.95±1.52b | 67.12±14.06a | 38.34±1.52b | 68.78±2.30a | | TC | 33.98±4.74a | 18.19±0.30a | 56.93±8.41a | 49.85±0.30a | 68.47±1.63a | | SNM2 | 32.32±4.76a | 17.52±1.48a | 56.68±6.55a | 52.71±1.48a | 69.37±0.75a | | SNM4 | 33.65±0.72a | 17.73±0.90a | 52.88±3.64a | 49.40±0.89a | 71.38±1.78a | | SNM5 | 27.04±3.97ab | 17.89±1.02a | 70.76±11.76a | 53.08±1.02a | 70.79±1.28a | | F值（F value） | | 2.47ns | 4.48* | 0.62ns | 23.17** | 0.56ns |
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