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通过对大、小白菜子叶不同处理的研究表明，子叶剪除面积越大对植株的影响越大；去除两张子叶面积的３／４对植株的影响比去除１／２面积的影响显著；去除相同面积子叶，在子叶展平期对植株的影响比拉十字期明显，子叶损伤对小白菜叶柄产量比对叶片产量的影响大
The results showed that the bigger the cotyledon removal area was, the bigger the impact on plants was. The removal of two thirds of the cotyledon area affected the plant more than the removal of 1/2 area, The area of cotyledons affected the plants significantly at the cotyledon spreading stage compared with that of the cross of the pullraphis. The effects of cotyledon damage on the yield of leaves of Chinese cabbage