生物炭与无机氮配施对稻田温室气体排放及氮肥利用率的影响
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向伟,王雷,刘天奇,李诗豪,翟中兵,李成芳
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Effects of Biochar Plus Inorganic Nitrogen on the Greenhouse Gas and Nitrogen Use Efficiency from Rice Fields
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XIANG Wei,WANG Lei,LIU TianQi,LI ShiHao,ZHAI ZhongBing,LI ChengFang
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表4 不同处理水稻吸氮量、氮肥利用率及氮肥偏生产力的变化
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Table 4 Changes in rice nitrogen uptake, nitrogen utilization and fertilizer partial productivity of different treatments under different treatments
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年份
Year | 处理
Treatment | 吸氮量
Nitrogen uptake (kg·hm-2) | 氮肥利用率
Nitrogen use efficiency (%) | 氮肥偏生产力
Nitrogen agronomic efficiency (kg·kg-1) | | 2018 | CK | 78.46±5.77 c | – | – | | IF | 135.80±4.26 b | 31.85±4.10 b | 51.82±0.82 b | | IF+C | 149.58±3.04 a | 39.51±2.93 a | 52.78±1.42 b | | RIF+C | 129.40±1.24 b | 40.42±1.70 a | 81.40±2.75 a | | 2019 | CK | 80.5±7.29 c | – | – | | IF | 134.69±5.25 b | 30.13±2.92b | 51.82±0.82 b | | IF+C | 148.63±0.50 a | 37.85±0.47 a | 52.78±1.42 b | | RIF+C | 128.62±3.14 b | 38.16±4.31 a | 81.40±2.75 a |
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