五十年代至六十年代中期,武汉地区稻纵卷叶螟发生量少,为害轻微。1965年推广矮秆品种以后,纵卷叶螟发生量迅速上升,到1968年造成第一个大发生年。近年来,杂交水稻的发展使纵卷叶螟为害更为严重。 From the 1950s to the mid-1960s, the incidence of Cnaphalocrocis medinalis was less in Wuhan and it was less harmful. After the popularization of dwarf varieties in 1965, the occurrence of leafroller occurred rapidly rising to 1968, causing the first major occurrence year. In recent years, the development of hybrid rice makes the leaf roller borer more serious damage.