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盆栽连作大豆的研究结果表明，连作可使人豆生长发育受阻，病害加重，叶面积减少．根系发育不良，导致产量下降。这种连作障碍可以通过土壤灭菌消除。
The results of potted continuous cropping soybean showed that continuous cropping could retard the growth and development of human bean, increase the disease and decrease the leaf area. Malnutrition in the root causes the yield to drop. This continuous cropping obstacle can be eliminated by soil sterilization.