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应用典型相关分析方法，对１２０个陆地棉品系产量构成的三个因素进行分段研究表明，（１）构成皮棉产量的三因素间存在动态平衡，不同组合模式，其产量表现不同。（２）单株铃数、衣分、铃重都存在最佳选择范围，在此范围内容易形成高产皮棉的优化组合。（３）三因素中某一因素的过高选择，会降低另外两个因素的选择动态，不易形成最佳产量组合。
By means of canonical correlation analysis, the sub-study on the three factors that make up the yield of 120 Upland cotton cultivars shows that: (1) There are dynamic balance among the three factors which constitute the lint yield, and the yield patterns are different under different combinations. (2) The optimal number of bolls, clones and boll weight per plant exists in the optimal range, which is easy to form the optimal combination of high yield lint. (3) The over-selection of a certain factor in the three factors will lower the selection dynamics of the other two factors and it is not easy to form the optimal output combination.