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本试验采用三因子五水平二次回归正交旋转组合设计的方法，对影响江苏淮北地区杂交棉皮棉产量的人为可控因子中的移栽密度、钾肥用量和缩节胺用量三个因子进行了研究。通过建立的数学模型，明确了对产量影响的主次顺序为：密度＞钾肥＞化控，并得到了１９００～２０００ｋｇ·ｈｍ－２产量水平的栽培措施组合：移栽密度３４４万株·ｈｍ－２，氯化钾用量２２２９ｋｇ·ｈｍ－２，缩节胺用量４８４５ｇ·ｈｍ－２。
In this study, three factors and five levels quadratic regression orthogonal rotation combination design method was used to study the effects of transplanting density, potash fertilizer dosage and shrink amine dosage on the artificially controlled factors affecting the yield of hybrid cotton lint in Huaibei area, Jiangsu Province. the study. According to the established mathematical model, the order of major and minor effects on yield was defined as follows: density> potash fertilizer> chemical control, and the combination of cultivation measures with the yield level of 1900-2000kg · hm-2: 34,400 transplanting density hm-2, the amount of potassium chloride 2229kg · hm-2, the amount of shrink amine 4845g · hm-2.