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为了明确大豆蚜对大豆危害的作用机理,研究了大豆蚜阶段性危害对大豆产量及其相关性状的影响。结果表明:随着大豆蚜危害时期的延长,大豆蚜对大豆产量及其它性状的影响作用越强。在短期危害的条件下,对大豆株高的影响显著,但产量几乎不受影响。当危害达到大豆的盛花期,产量开始下降,危害达到结荚期时产量显著降低。因此,在大豆的盛花期之前防治大豆蚜会有效减少产量损失。
In order to clarify the mechanism of action of soybean aphid on soybean, the effects of soybean stage damage on soybean yield and its related traits were studied. The results showed that with the prolongation of the damage duration of soybean aphid, the effect of soybean aphid on soybean yield and other traits was stronger. In the short-term damage conditions, the impact of soybean plant height significant, but the output is almost unaffected. When the hazard reaches the full flowering stage of soybean, the yield begins to decline, and the yield is significantly reduced when the hazard reaches the podding stage. Therefore, the prevention and control of soybean aphid before the flowering season of soybean can effectively reduce the yield loss.