稻纵卷叶螟(Cnaphaiocrocis medinalis Gu-enec.)幼虫俗名包叶虫、裹叶虫、滚叶虫等。全省86个县市,除滨湖地区发生较少以外,其余各县市均有不同程度的发生和为害,特别是湖南、湘西发生更为普遍。从近年来的资料来看,系本省一种间歇性发生局部为害的一种虫。1957年衡南三塘农业试验站的两丘丰产示范田(品种为早梗16号)被害叶达100%,最多一蔸有虫29条,致使水稻早期倒伏,减产32.25%。 Cnaphaiocrocis medinalis Gu-enec. Larvae common name leaf packworm, wrapped leafworm, Roller bug and so on. In 86 counties and cities in the province, except for the less developed areas in Binhu, all other counties and cities all had different degrees of occurrence and harm, especially in Hunan and Western Hunan. From the data in recent years, the Department of the province a kind of intermittent local occurrence of a pest. In 1957, three high-yielding demonstration fields (varieties of early stem 16) in Hengnan Santang Agricultural Experimental Station suffered 100% damage and up to a maximum of 29 insects, resulting in early rice lodging with a yield reduction of 32.25%.