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大豆食心虫不仅在大豆生育后期危害豆粒,而且在大豆割后放置田间或场院期间,仍会继续为害.放置时间越长,为害越重.开原县金沟子公社农科站调查:适时收割,及时脱粒,虫食粒率仅3～5%,被咬坏的缺口也轻;而割后长时间堆放的大豆,虫食率9～11%,受害的豆粒豁口大,脱粒后多成“破瓣豆”,影响产量,也降低了品质.
Soybean borer insects not only endanger bean grains in the later stage of soybean growth, but also continue to harm during the post-cut soybean field or field yard placement. The longer the planting time, the more damage the more .Kaogu County Jin Gouzi agricultural station survey: timely harvest, Timely threshing, insecticidal grain rate of only 3 to 5%, the gap was bitten badly light; and cut a long time after stacking the soybean, insect-eating rate of 9 to 11% of the victim beans gap, threshing more into “broken Flap beans ”affect the yield, but also reduce the quality.