晋南黄土旱塬小麦养分投入与化肥减施经济环境效应评价
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马红梅,曹寒冰,谢英荷,李廷亮,刘凯,张奇茹,姜丽伟,曹静,邵靖琳,武文玥,栗文琪
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Evaluation on Fertilizer Application and Its Economic-Environmental Benefits Associated with Fertilizer Reduction Potential for Dryland Wheat in Loess Plateau of Southern Shanxi Province
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MA HongMei,CAO HanBing,XIE YingHe,LI TingLiang,LIU Kai,ZHANG QiRu,JIANG LiWei,CAO Jing,SHAO JingLin,WU WenYue,LI WenQi
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表4 磷投入和减磷潜力
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Table 4 Phosphorus input and phosphorus reduction potential
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磷投入分级
P input level | 指标
Index | 产量水平Yield level（kg·hm-2） | | ≤2200 | 2200-3200 | 3200-4200 | 4200-5200 | >5200 | 平均 Mean | 适中
Middle | FF（kg P2O5·hm-2） | 32.8 | 42.7 | 61.8 | 73.4 | 110.1 | 64.2 | | RF（kg P2O5·hm-2） | 33.5 | 44.6 | 60.0 | 74.7 | 112.9 | 65.1 | | RN（kg P2O5·hm-2） | -0.8 | -1.8 | -1.9 | -1.2 | -2.8 | -1.0 | | △(%) | -2.3 | -4.3 | -3.0 | -1.7 | -2.6 | -1.5 | 高
High | FF（kg P2O5·hm-2） | 36.9 | 54.5 | 71.9 | 89.7 | 131.3 | 76.9 | | RF（kg P2O5·hm-2） | 29.8 | 44.7 | 59.9 | 75.4 | 110.3 | 64.0 | | RN（kg P2O5·hm-2） | 7.1 | 9.9 | 12.0 | 14.4 | 20.9 | 12.8 | | △(%) | 19.1 | 18.1 | 16.6 | 16.0 | 16.0 | 16.7 | 很高
Very high | FF（kg P2O5·hm-2） | 98.1 | 187.2 | 217.4 | 432.7 | 405.7 | 268.2 | | RF（kg P2O5·hm-2） | 23.7 | 43.3 | 60.2 | 75.4 | 110.0 | 62.5 | | RN（kg P2O5·hm-2） | 74.4 | 143.9 | 157.1 | 357.3 | 295.7 | 205.7 | | △(%) | 75.8 | 76.9 | 72.3 | 82.6 | 72.9 | 76.7 |
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