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棉花学报  2011 

南疆棉区杂交棉高产栽培优化配方施肥技术研究

DOI: 1002-7807(2011)04-0353-06, PP. 353-358

Keywords: 杂交棉,氮磷钾肥料,优化配方

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Abstract:

采用“3414”不完全设计方法,研究了南疆杂交棉高产栽培水平下氮磷钾肥料的优化配比效果。结果表明氮磷钾肥料的主效应对杂交棉皮棉产量的影响顺序为钾肥>磷肥>氮肥;氮磷钾肥料两因素间的交互作用,对杂交棉皮棉产量影响的大小顺序是N×K>P×K>N×P;根据氮磷钾肥料组合寻优结果和杂交棉高产棉田的实践,在南疆种植杂交棉要获得2836~3050kg·hm-2的皮棉产量,需施纯N262.3~748.5kg·hm-2,P2O514.1~277.0kg·hm-2,K2O43.6~199.8kg·hm-2;最佳经济施肥量分别为纯N433.9kg·hm-2,P2O5116.5kg·hm-2,K2O103.0kg·hm-2,N∶P2O5∶K2O=1∶0.27∶0.24。

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