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采用灰色关联度分析，对１９８５～１９９４年四川育成参加省棉花新品种区域试验的３４个中早熟品种和其中通过区试的１５个品种，单株铃数、铃重、衣分、衣指、纤维比强、枯萎病指与皮棉产量和皮棉增产率逐一进行了分析。根据关联度的大小，分别按常规棉和杂交棉排列出对产量和增产率影响的关联序。在此基础上，总结了我省过去１０年棉花育种产量性状选择的经验，分别提出了四川“九五”期间常规棉和杂交棉丰产性选择的主攻方向。
By using gray relational analysis, 34 middle-early maturing varieties and 15 varieties which passed the regional test in Sichuan province during the period from 1985 to 1994 were selected to study the regional cotton cotton varieties. The number of bolls, boll weight, lint percentage, Fibers were stronger than that of Fusarium wilt, and lint yield and lint yield were analyzed one by one. According to the degree of correlation, the correlation order of yield and yield increase are arranged according to conventional cotton and hybrid cotton respectively. On this basis, the author summarizes the experience of cotton yield traits selection in the past 10 years in our province and puts forward the main directions of the high yield selection of conventional cotton and hybrid cotton during the “Ninth Five-year Plan” in Sichuan Province.