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2836～3050 kg·hm-2的皮棉产量，需施纯N 262.3～748.5 kg·hm-2，P2O5 14.1～277.0 kg·hm-2，K2O 43.6～199.8 kg·hm-2；最佳经济施肥量分别为：纯N 433.9 kg·hm-2，P2O5 116.5 kg·hm-2，K2O 103.0 kg·hm-2，N∶P2O5∶K2O=1∶0.27∶0.24。
Abstract
The optimized formulation experiment of N, P, K fertilizers was studied in high-yielding cultivation of cotton hybrids in South Xinjiang by the “3414” incomplete design method. The results showed that the main effects of N, P, K fertilizer on the lint yield were ranked as follows: K>P> N. The effect of the interaction of every two of the three kinds of fertilizer on the lint yield was N×K>P×K>N×P. Based on the results of the optimum combination of three fertilizers and the practice of the high-yield hybrid cultivation, the fertilizer recommendation was made. To acquire the lint yield of 2836~3050 kg·hm-2 in South Xinjiang, there should be fertilizers application of N 262.3~748.5 kg·hm-2, P2O5 14.1~277.0 kg·hm-2, and K2O 43.6~199.8 kg·hm-2, respectively, and the optimum economic fertilizer rate is N 433.9 kg·hm-2, P2O5116.5 kg·hm-2, and K2O 103.0 kg·hm-2, respectively. The ratio of N: P2O5:K2O is 1:0.27:0.24.
关键词
杂交棉
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氮磷钾肥料 /
优化配方
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Key words
cotton hybrid
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N /
P /
K /
optimum formula
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