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通过1995～1997年对夏大豆一穴双株直播不摘顶（A）及一穴双株直播摘顶模式（B）与大田常规种植模式的比较，得出两种种植模式均比常规种植产量高，且差异达极显著水平；通过数学模拟、A模式下，穴距15.7cm时，产量最高253.37kg／667m2；B模式下，穴距19．4cm时，产量最高为274．73kg／667m2；并通过相关系数，直接影响力间接影响力的分析，得出单株粒重对产量的影响最大，单株粒数和百粒重通过单株粒重对产量的影响也较大.
By comparing the conventional planting mode of direct sowing (A) and double sowing (B) of Summer Soybean at one acre point and summer field in 1995 ~ 1997, it was found that both planting modes were higher than conventional planting yield The maximum yield was 253.37kg / 667m2 when the hole distance was 15.7cm in A mode. The maximum yield was 274.73kg / 667m2 when the hole distance was 19.4cm in B mode by mathematical simulation. Through the analysis of correlation coefficient and indirect influence of direct influence, it was concluded that grain weight per plant had the greatest impact on the yield. The effect of grain weight per plant and grain weight per plant on yield was also greater.