大豆食心虫是危害大豆的单食性害虫。它以幼虫钻蛀豆荚食害豆粒，对大豆的产量和品质影响极大。一、发生大豆食心虫一年发生一代，以老熟幼虫在豆田、晒场及附近土内做茧越冬，来年7月下旬越冬幼虫开始化蛹，成虫盛发期一般在8月15～25日，8月下旬为产卵高峰期，9月初为幼虫蛀 Soybean pod borer is a pest that endangers soybean. It larvae moth bean pod damage beans, soybean yield and quality greatly affected. First, the occurrence of soybean borer occurs a generation a year, with mature larvae in the bean field, drying field and near the soil to do cocoon overwintering, the latter winter of juvenile larvae began to pupate, adult Sheng period generally in August 15 to 25, Late August spawning peak, early September for larvae