粘虫是我省粮食作物的主要害虫之一,主要以二代粘虫为害玉米、高粱、小麦、谷子等禾谷类作物。近几年,随着外来虫源的增多,带田面积的扩大以及麦田水肥条件的提高,粘虫发生趋势明显加重。58年以前全省粘虫发生面积约80万亩,大发生年为150万亩左右。72年 Mythimna separata is one of the major pests of food crops in our province. It mainly infects cereal crops such as corn, sorghum, wheat and millet for the second generation of armyworm. In recent years, along with the increase of foreign insect sources, the expansion of belt area and the improvement of water and fertilizer conditions in wheat fields, the occurrence tendency of armyworms is obviously aggravated. 58 years ago, the area where the armyworm occurred in the province was about 800,000 mu, and the annual occurrence rate was about 150 million mu. 72 years