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以两亲生育期及结荚习性差异不大的两个大豆杂交组合为材料比较了同等后代群体分别在稀植（１５ｃｍ株距）和密植（７．５ｃｍ株距）条件下的选择效果。结果表明，在稀植条件下对产量的选择较为有利。
The results of selecting the same offspring under the conditions of sparse planting (15 cm spacing) and close planting (spacing of 7.5 cm spacing) were compared between two soybean cross combinations with little difference in amphipathic stage and pod habit. The results showed that under the condition of rare planting, the choice of yield was more favorable.