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用７个Ｆ１代具高竞争优势的陆地棉品种间杂种Ｆ＿２代和高产、优质、多抗的品种鄂棉１５（对照）为材料，研究了Ｆ＿２代及皮棉产量等经济性状的竞争优势，又对它们与株高等在艺性状进行了通径分析。结果表明：正确选配亲本，能将高产、优质、早熟综合于一体，多代利用陆地棉品种间杂种。３８４×３６１Ｆ＿２，鄂荆１号（３２４７）×３６１Ｆ２显著优于对照，分别增产１５．４９％、１２．１６％，且纤维长度、早熟性与对照相近，在生产上有很大的利用价值。决定Ｆ＿２代皮棉产量主要是单株铃数、衣分以及它们之间的互作。同一农艺性状对不同经济性状影响程度很不相同，每个经济性状一般都受１～３个主要农艺性状和它们之间，或它们与其他农艺性状互作所制约。在湖北生态条件下，高产、优质、早熟的陆地棉品种间杂种Ｆ＿２代应具备棉抹较高，果位适中而果高偏低，纵横比较大，果枝夹角较小及主茎节距较大等农艺性状
Seven F 1 generation F1 hybrids with high competitive edge and their high yielding, high quality and poly resistance variety E27 (control) were used as materials to study the competitive advantages of economic traits such as F 2 generation and lint yield. The path traits were analyzed for their traits in plant height. The results showed that: the correct selection of parents, can be high yield, high quality, precocious integration, multigenerational use of G. napus hybrids. 384 × 361F_2, Jing 1 (3247) × 361F2 were significantly better than the control, yield 15.49%, 12.16%, respectively, and the fiber length, precocious similar to the control, in the production of great use value. It was decided that the yield of F 2 generation lint was mainly the number of bolls per plant, lint percentage and their interaction. The same agronomic traits have very different effects on different economic traits, and each economic trait is generally conditioned by one to three major agronomic traits and their interactions with each other or with other agronomic traits. Under the ecological conditions of Hubei, F 2 generation hybrids with high yield, high quality and precocious varieties of G. hirsutum should have higher cotton wiping, moderate fruit height and lower fruit height, larger aspect ratio, smaller angle between fruit branches and smaller pitch of main stem Large agronomic traits