粘虫是我国的主要害虫之一。近年来,一代粘虫在浙江中北部、湖北西北部、江苏、安徽、河南中南部、山东南部及东部等地区,发生较重。有的地区反映1970年以来已连续三年大发生。黄河以北各地,一代粘虫为害也有所发展,给生产带来很大威胁。据调查研究证明,此代粘虫的虫源,系由长江以南各地迁飞而来。 Mythimna separata is one of the major pests in my country. In recent years, a generation of armyworms occurred in central and northern Zhejiang, northwestern Hubei, Jiangsu, Anhui, southern Henan, southern Shandong and eastern regions. Some areas reflect the big three consecutive years since 1970. To the north of the Yellow River, the development of a generation of armyworm pests has also evolved, posing a great threat to the production. According to the investigation and study, the source of this generation of armyworms is migrated from all over the south of the Yangtze River.