我国春麦区小麦化肥有机替代潜力分析
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贾立国,石晓华,苏亚拉其其格,秦永林,于静,陈杨,樊明寿
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Potential Analysis of Organic Fertilizer Substitution for Chemical Fertilizer in Spring Wheat Regions of China
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JIA LiGuo,SHI XiaoHua,SUYALA Qiqige,QIN YongLin,YU Jing,CHEN Yang,FAN MingShou
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表7 我国各省份春小麦秸秆及其养分还田量
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Table 7 Amount of the straw and its nutrient returning to farmland in different spring wheat regions of China
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地区
Region
| 秸秆直接还田量
Direct straw returning
(×104 t) | 秸秆燃烧还田量
Straw returning after burning
(×104 t) | 还田总量
Total amount of straw returning
(×104 t) | 单位面积还田量Straw returning per unit area
(kg·hm-2) | 秸秆还田氮量Nitrogen from straw returning
(kg N·hm-2) | 秸秆还田磷量Phosphorus from straw returning
(kg P2O5·hm-2) | 秸秆还田钾量Potassium from straw returning
(kg K2O·hm-2) | | 内蒙古 IM | 102.4 | 30.9 | 133.3 | 1977.9 | 8.2 | 1.8 | 22.9 | | 新疆 XJ | 103.1 | 31.1 | 134.2 | 3289.5 | 13.6 | 3.0 | 38.2 | | 甘肃 GS | 54.9 | 16.6 | 71.5 | 3622.9 | 15.0 | 3.3 | 42.0 | | 青海 QH | 21.6 | 6.5 | 28.1 | 2499.6 | 10.4 | 2.2 | 29.0 | | 黑龙江 HLJ | 18.3 | 5.5 | 23.8 | 2341.7 | 9.7 | 2.1 | 27.2 | | 宁夏 NX | 14.8 | 4.5 | 19.2 | 2915.6 | 12.1 | 2.6 | 33.8 | | 总计 Total | 315.0 | 95.2 | 410.2 | | | | | | 平均 Mean | | | | 2746.3 | 11.4 | 2.5 | 31.9 |
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