大豆食心虫又称小红虫,是我省大豆产区危害最严重的害虫之一。据调查,大豆虫食率一般在15～20%,严重年份可达60～70%。它所造成的经济损失,平均占大豆总产值的30%左右。多年来,生产上采用轮作换茬、机械深翻、选育抗虫品种及用敌敌畏药棒熏蒸等方法进行防治,虽然收到一定防治效果,但未能全面控制其危害。经试验、示范,在大豆食心虫盛发期,用25% Soybean food insects, also known as small red worms, soybean production areas in our province one of the most serious pests. According to the survey, soybean worm rate is generally 15 to 20%, severe years up to 60 to 70%. The economic loss it causes accounts for about 30% of the total soybean output. Over the years, production has adopted rotation cropping, mechanical deep plowing, breeding insect-resistant varieties and fodder with a dichlorvos drug fumigation and other methods of prevention and control, although the control effect received some, but failed to fully control its harm. After testing, demonstration, in soybean blastworm Sheng period, with 25%