不同施氮水平对双季稻产量、氮素利用率及稻田氮素平衡的影响
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秦碧蓉, 尤赛雅, 陈书融, 朱练峰, 孔亚丽, 朱春权, 田文昊, 张均华, 金千瑜, 曹小闯, 刘丽
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Effects of the Different Nitrogen Levels on Yield, Nitrogen Utilization Efficiency and the Nitrogen Balance of Double-Cropping Rice in Paddy Field
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Qin Birong, You Saiya, Chen Shurong, Zhu Lianfeng, Kong Yali, Zhu Chunquan, Tian Wenhao, Zhang Junhua, Jin Qianyu, Cao Xiaochuang, Liu Li
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表2 双季稻土壤氮输入与氮输出
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Table 2 Contents of soil N input and output of the double-cropping rice
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处理
Treatment | N输入N input (kg/hm2) | | N输出N output (kg/hm2) | | Ndep | Nirr | Nin | Nm | Nf | Ninp | | Nup | Nres | Nloss | 早稻
Early rice | 2020 | N0 | 9.3 | 6.4 | 107.4 | 97.2 | 0 | 220.3 | | 136.8±5.0c | 67.8±3.3e | 15.7±1.1d | | N90 | 9.3 | 6.4 | 107.4 | 97.2 | 90 | 310.3 | | 179.1±3.8b | 81.6±3.4d | 49.6±3.6c | | | N120 | 9.3 | 6.4 | 107.4 | 97.2 | 120 | 340.3 | | 184.9±4.5b | 92.8±2.2c | 62.5±9.3bc | | | N150 | 9.3 | 6.4 | 107.4 | 97.2 | 150 | 370.3 | | 186.3±2.5b | 107.7±6.3b | 76.3±9.8b | | | N180 | 9.3 | 6.4 | 107.4 | 97.2 | 180 | 400.3 | | 200.9±5.7a | 116.4±4.2b | 82.9±15.6ab | | | N210 | 9.3 | 6.4 | 107.4 | 97.2 | 210 | 430.3 | | 203.4±4.4a | 127.6±5.7a | 99.2±9.1a | | 2021 | N0 | 9.5 | 6.0 | 75.9±3.7e | 124.8 | 0 | 292.1±1.7f | | 134.2±3.6d | 66.5±3.2f | 15.5±1.4d | | | N90 | 9.5 | 6.0 | 96.3±2.2d | 124.8 | 90 | 402.5±1.1e | | 175.1±4.8c | 80.0±3.3e | 71.4±6.3c | | | N120 | 9.5 | 6.0 | 100.2±2.3d | 124.8 | 120 | 436.4±1.2d | | 182.3±5.7bc | 91.0±2.1d | 87.1±3.3c | | | N150 | 9.5 | 6.0 | 117.5±2.7c | 124.8 | 150 | 483.7±0.6c | | 192.8±5.4ab | 106.0±4.8c | 108.6±9.4bc | | | N180 | 9.5 | 6.0 | 128.4±2.7b | 124.8 | 180 | 524.6±0.6b | | 193.6±6.9ab | 115.5±2.5b | 113.4±12.4b | | | N210 | 9.5 | 6.0 | 139.7±3.6a | 124.8 | 210 | 565.9±1.6a | | 209.5±198.7a | 126.0±6.4a | 141.6±14.9a | 晚稻
Late rice | 2020 | N0 | 9.9 | 6.8 | 67.8±3.3e | 140.9 | 0 | 301.3±1.3f | | 132.8±5.4c | 75.9±3.7e | 16.7±1.5f | | N120 | 9.9 | 6.8 | 81.6±3.4d | 140.9 | 120 | 435.1±1.4e | | 186.4±6.7b | 96.3±2.2d | 76.5±15.4e | | | N160 | 9.9 | 6.8 | 92.8±2.2c | 140.9 | 160 | 486.3±1.1d | | 192.4±2.8ab | 100.2±2.3d | 117.8±4.0d | | | N200 | 9.9 | 6.8 | 107.7±6.3b | 140.9 | 200 | 541.2±2.3c | | 202.2±9.4ab | 117.5±2.7c | 145.6±8.2c | | | N240 | 9.9 | 6.8 | 116.4±4.2b | 140.9 | 240 | 589.9±0.1b | | 204.0±6.0a | 128.4±2.7b | 181.7±7.8b | | | N280 | 9.9 | 6.8 | 127.6±5.7a | 140.9 | 280 | 641.1±2.6a | | 202.7±10.2a | 139.7±3.6a | 222.8±3.1a | | 2021 | N0 | 9.6 | 7.4 | 66.5±3.2f | 127.1 | 0 | 286.5±1.1f | | 125.5±4.4b | 68.1±3.8d | 17.0±1.2f | | | N120 | 9.6 | 7.4 | 80.0±3.3e | 127.1 | 120 | 420.0±1.3e | | 197.9±7.8a | 98.4±2.9c | 42.1±5.6e | | | N160 | 9.6 | 7.4 | 91.0±2.1d | 127.1 | 160 | 471.0±1.1d | | 205.3±4.1a | 102.8±2.3c | 87.0±1.9d | | | N200 | 9.6 | 7.4 | 106.0±4.8c | 127.1 | 200 | 526.3±2.3c | | 209.5±7.6a | 118.5±4.8b | 122.1±5.6c | | | N240 | 9.6 | 7.4 | 115.5±2.5b | 127.1 | 240 | 575.5±1.5b | | 206.1±9.8a | 128.1±5.8ab | 165.4±9.4b | | | N280 | 9.6 | 7.4 | 126.0±6.4a | 127.1 | 280 | 626.0±0.3a | | 207.3±8.7a | 136.0±6.0a | 206.8±4.9a |
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