不同氮效率玉米品种对土壤硝态氮时空分布及农田氮素平衡的影响
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屈佳伟, 高聚林, 于晓芳, 王志刚, 胡树平, 孙继颖, 苏治军, 谢岷, 青格尔
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Effects of Maize Varieties with Different Nitrogen Efficiencies on Temporal and Spatial Distribution of Soil Nitrate and Field Nitrogen Balance
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Jia-Wei QU, Ju-Lin GAO, Xiao-Fang YU, Zhi-Gang WANG, Shu-Ping HU, Ji-Ying SUN, Zhi-Jun SU, Min XIE, Ge-Er QING
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| 表2 土壤氮素农田表观平衡 |
| Table 2 Field apparent balance of soil nitrate (kg hm-2) |
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品种
Variety | 处理
Treatment | 氮投入 N impute | | 氮输出N output | 施氮量
Nitrogen
rate | 播前
Nmin before
seeding | 矿化氮
Mineral
N | 总输入
Total
N | 作物携出
Crop
bring | 土壤硝态氮残留
Soil nitrate
residual | 表观损失
Surface
loss | 氮盈余
N
surplus | | 2012 | | | | | | | | | | | | HNE | 0 N | 0 | 344.40 | 150.01 | 494.41 | | 334.45 c | 159.96 b | 0 | 159.96 c | | 300N | 300 | 344.40 | 150.01 | 794.34 | | 460.85 b | 318.28 a | 15.21 b | 333.49 b | | 450N | 450 | 344.40 | 150.01 | 944.34 | | 514.29 a | 343.26 a | 86.79 a | 430.05 a | | LNE | 0 N | 0 | 344.40 | 146.34 | 490.73 | | 237.02 c | 253.71 b | 0 | 253.71 c | | 300N | 300 | 344.40 | 146.34 | 793.57 | | 337.48 b | 412.07 a | 44.02 b | 456.09 b | | 450N | 450 | 344.40 | 146.34 | 943.57 | | 379.13 a | 429.03 a | 135.41 a | 564.44 a | | 2013 | | | | | | | | | | | | HNE | 0 N | 0 | 262.50 | 25.98 | 288.48 | | 192.13 c | 96.35 b | 0 | 96.35 c | | 300N | 300 | 262.50 | 25.98 | 588.48 | | 322.01 b | 150.19 a | 116.29 b | 266.47 b | | 450N | 450 | 262.50 | 25.98 | 738.48 | | 396.15 a | 172.66 a | 169.66 a | 342.33 a | | LNE | 0 N | 0 | 262.50 | 26.46 | 288.96 | | 153.76 c | 135.20 b | 0 | 135.20 c | | 300N | 300 | 262.50 | 26.46 | 588.96 | | 228.85 b | 183.62 a | 176.49 b | 360.11 b | | 450N | 450 | 262.50 | 26.46 | 738.96 | | 291.86 a | 201.30 a | 245.81 a | 447.11 a |
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