陕西省小农户作物生产的减肥潜力及经济效益评价
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米晓田,石磊,何刚,王朝辉
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Fertilizer Reduction Potential and Economic Benefits of Crop Production for Smallholder Farmers in Shaanxi Province
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MI XiaoTian,SHI Lei,HE Gang,WANG ZhaoHui
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表1 作物100 kg经济产量需肥量
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Table 1 Nutrients requirement of 100 kg economic yield
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作物分类 Crop classification | 作物类型 Crop type | 100 kg经济产量养分需求量 Nutrients requirement of 100 kg economic yield (kg) | N | P2O5 | K2O | 粮食作物 Cereal crop | 小麦Wheat[12] | 2.8 | 0.7 | 2.4 | 玉米 Maize[19,20,21] | 1.74 | 0.32 | 1.53 | 水稻Rice[22] | 1.71 | 0.34 | 1.84 | 谷子 Millet[23] | 2.72 | 0.96 | 2.32 | 马铃薯Potato [23] | 0.5 | 0.2 | 1.0 | 油料作物 Oil crop | 油菜Canola [15, 23] | 4.3 | 2.5 | 4.2 | 大豆Soybean [23] | 7.2 | 1.7 | 4.0 | 经济作物 Cash crop | 苹果Apple[16, 23] | 0.5 | 0.2 | 0.4 | 西红柿Tomato[24,25] | 0.32 | 0.10 | 0.25 | 烤烟Flue-cured tobacco [26] | 3.5 | 1.4 | 4.8 |
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