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大豆食心虫,属鳞翅自小卷叶蛾科。我国大豆产区均有发生。单食性害虫,对大豆品质和产量影响很大。大豆食心虫在我国每年发生一代,多数以老熟幼虫在豆田或场边深土内(1—2寸)作茧越冬,少数在仓库内荫蔽处结茧过冬。翌年7月下旬越冬幼虫开始移至土表化蛹。8月上旬—9月上旬为成虫羽化期,8月下旬为羽化盛期,9月为害盛期,9—10月份大豆成熟,老熟幼虫脱荚入土结茧越冬。
Soybean insects, Lepidoptera is a small leaf roller moth family. China’s soybean production areas have occurred. Simplex pests, a great impact on soybean quality and yield. Soybean bore worms occur in our country each generation, most of the mature larvae in the field or field edge deep soil (1-2 inch) for the winter cocoon, a few in the warehouse shade cocoon winter. Overwintering larvae began to migrate into the soil surface pupae in late July the following year. From early August to early September, it is the eclosion stage of adult, late August is the peak of eclosion, and September is the peak of damaging. The soybean is ripe from September to October.