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大田试验于１９８６和１９８７年进行，以确定苍耳对大豆根系、枝叶的干扰效应。植株生长在多孔的膜管内。苍耳的营养生长期较大豆长，成熟时，株高两倍于大豆。由于苍耳枝叶、全株（根十枝叶）的干扰，大豆的根、茎、干重及种子产量均下降，全株干扰下降最多。苍耳枝叶干扰造成大豆粒重的损失占全株干扰损失的４８％，而大豆的干扰对苍耳的影响甚微。
Field trials were conducted in 1986 and 1987 to determine the interference effect of Xanthium sibiricum on soybean roots, leaves and leaves. Plants grow in porous membrane tubes. Xanthium nutrition growing longer than soybean, mature, twice as tall as soybean. Due to the interference of cocklebur leaves and whole plants (roots and ten leaves), the root, stem, dry weight and seed yield of soybean all decreased, and the whole plant decreased the most. Xanthium sp. Leaf interference caused the loss of soybean grain weight loss accounted for 48% of the total plant loss, while the interference of soybeans on the Xanthium little effect.