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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Table 3 Grain yield and its components under the different nitrogen managements
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年份/季节
Year/Season | 处理
Treatment | 产量
Grain yield
(t·hm-2) | 有效穗数
Panicle number
(×104 hm-2) | 每穗粒数
Spikelets per panicle | 结实率
Seed setting rate
(%) | 千粒重
1000-grain weight (g) | 2018晚季
Late season of 2018 | N0 | 4.45±0.09c | 203.7±4.2d | 147.6±9.8ab | 75.45±1.97c | 22.98±0.17bc | | TC | 8.10±0.18a | 306.8±14.9a | 153.7±2.4a | 81.15±1.63ab | 23.25±0.06b | | RTC | 7.39±0.12b | 271.4±4.0b | 153.6±2.5a | 81.93±0.80a | 22.90±0.25bc | | SNM1 | 7.36±0.14b | 304.7±7.7a | 136.7±5.5b | 78.03±0.90bc | 22.60±0.16c | | SNM2 | 7.92±0.23a | 309.4+4.0a | 156.1±5.0a | 80.43±0.35ab | 22.93±0.24bc | | SNM3 | 7.25±0.15b | 238.0±4.5c | 154.3±3.5a | 80.83±0.48ab | 23.93±0.29a | | F值（F value） | | 74.28** | 29.57** | 2.43ns | 4.52* | 8.22** | 2019早季
Early season of 2019 | N0 | 4.79±0.11c | 170.8±8.4b | 168.1±3.4c | 86.09±1.34a | 21.33±0.14bc | | FP | 6.79±0.27b | 226.0±5.7a | 168.4±3.7c | 85.79±0.61a | 21.86±0.09a | | TC | 7.46±0.05a | 246.4±14.2a | 178.8±2.1ab | 88.35±1.32a | 21.76±0.08a | | SNM2 | 7.29±0.20ab | 226.6±7.0a | 184.0±3.3ab | 87.38±0.56a | 21.44±0.10bc | | SNM4 | 7.30±0.13ab | 241.7±3.1a | 177.7±1.1b | 87.94±0.46a | 21.27±0.08c | | SNM5 | 7.30±0.14ab | 229.7±10.7a | 186.9±4.3a | 88.21±0.69a | 21.58±0.07ab | | F值（F value） | | 33.61** | 11.09** | 6.99** | 1.60ns | 5.48** |
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