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湖北省小麦施钾效果及钾利用效率研究

Hubei Agricultural Sciences(2011)

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Abstract
通过70组田间试验研究了湖北省主产区小麦施钾的增产、增收效应及钾利用效率。结果表明,增施适量钾肥具有显著的增产增收效果,小麦平均增产556~978 kg/hm2,增产率为9.5%~16.7%;施钾平均增加经济收益192~897元/hm2,产投比为1.2~4.7;钾的偏生产力和农学效率分别为71.0 kg/kg和7.4 kg/kg。应用直线加平台模型拟合小麦产量与钾用量的关系,求得湖北省小麦钾的最佳用量平均约为87 kg/hm2。
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Key words
wheat,profit,yield,potassium,potassium use efficiency
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