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对4个大豆品种与牛筋草的竞争关系进行了研究，结果表明，不同大豆品种对杂草干扰的反应有显著差异，大豆种子产量损失率在25％～38％；牛筋草生物量和单株种子重量受大豆影响而显著降低，但大豆品种间没有显著差异。
The results showed that the response of different soybean varieties to weed disturbance was significantly different, the yield loss rate of soybean seed was between 25% and 38% The seed weight per plant was significantly reduced by soybean, but there was no significant difference between soybean varieties.