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采用两个行距、四个密度对大豆吉林１３号品种产量因素对行距和密度的反应进行研究，结果表明，小行距（３２．５ｃｍ）条件下分枝数、株荚数、株粒重均显著高于大行距（６５ｃｍ）；而随密度增加，上述指标均下降．行距与密度对株高、株节数和百粒重均无显著影响．行距与密度在株荚数、株粒数、株粒重及产量上存在显著互作，表明在不同行距条件下，大豆获得最佳产量所要求的密度不同．小行距之所以能增产是由于在相同密度下，行距小、株距大，株间竞争减少，使植株个体能良好发育．
The effects of row spacing and density on the row spacing and density were studied by using two rows and four densities. The results showed that the number of branches, plant pod and grain weight were significantly Higher than the line spacing (65cm). With the increase of density, the above indexes decreased. Row spacing and density had no significant effect on plant height, plant number and weight per 100 grains. Row spacing and density in the pod number, number of strains per plant, grain weight and yield significant interaction exists, indicating that under different row spacing conditions, soybeans to obtain the optimal yield of the required density. The reason why small row spacing can increase production is due to the same density, small row spacing, plant spacing, reduced competition between strains, so that plants can develop well.