湖南祁阳县土壤酸化主要驱动因素贡献解析
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周海燕,徐明岗,蔡泽江,文石林,吴红慧
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Quantitative Analysis of Driving-Factors of Soil Acidification in Qiyang County, Hunan Province
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ZHOU HaiYan,XU MingGang,CAI ZeJiang,WEN ShiLin,WU HongHui
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表3 祁阳典型种植体系氮的输入-输出通量
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Table 3 Input-output fluxes of N in typical agricultural systems
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作物类型
Cropping systems | 施氮量
N rate
(kg·hm-2·a-1) | 氮沉降
N deposition
(kg·hm-2·a-1) | 秸秆吸氮量
Straw N uptake
(%) | 籽粒吸氮量
Grain N uptake
(%) | NH3挥发
NH3 volatilization
(%) | NO3-N淋洗量
NO3-N leaching
(%) | | 水稻 Rice | 180 | 47.6 | 1.20 | 1.21 | 17.3 | 2.9 | | 玉米Corn | 216 | 47.6 | 0.92 | 1.15 | 24.5 | 20.2 | | 花生Peanut | 120 | 47.6 | 1.82 | 4.57 | 24.8 | 12.9 | | 油菜Rape | 160 | 47.6 | 0.87 | 8.67 | 24.6 | 15.1 | | 甘薯Sweet potato | 102 | 47.6 | 2.37 | 0.33 | 25.3 | 11.4 | | 大豆Soybean | 165* | 47.6 | 1.81 | 7.82 | 25.0 | 11.7 | | 柑橘Citrus | 239 | 47.6 | - | - | 24.6 | 17.7 |
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