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应用灰色关联度分析法从育种角度研究了玉米自交系产量配合力效应值与相关因素的关系，结果表明，玉米自交系产量配合力效应值与各相关因素的关联度顺序为：穗长＞生育期＞粒行数＞穗粒重＞百粒重＞穗粗。明确了各因素对自交系产量配合力效应值影响的主次关系，为玉米自交系选育提供理论依据。
The relationship between the yield combining ability of maize inbred lines and the related factors was studied by using the gray relational analysis method. The results showed that the order of the correlation of the yield combining ability effect value and the related factors in maize inbred lines was: > Growth period> Number of rows> Ear weight> 100 weight> Ear diameter. The principal and subordinate relationship of each factor affecting the yield combining ability effect value of inbred lines was clarified, which provided the theoretical basis for the breeding of maize inbred lines.