甘蓝夜蛾Mamestra brassicae在通化地区对十字花科叶菜类的危害,远远超过菜粉蝶,成为主要害虫。甘蓝夜蛾在整个发生期受到寄生性天敌昆虫的抑制作用是很大的。经过3年调查,共发现寄生性天敌6种,寄生率都较高(见表)。寄生卵的有广赤眼蜂Trichogrammaevanescens、拟澳赤眼蜂T.confusum;寄生幼虫有六索线虫Hexamermis sp.、螟蛉绒茧蜂Apanteles ruficrus;寄生蛹的有甘蓝夜蛾拟瘦姬蜂Netelia ocellaris;还有一种是尚未鉴定 Mamestra brassicae in cabbage bollworm in the Tonghua area of ​​cruciferous leafy vegetables harm, far more than cabbage butterfly, become the main pests. The inhibition of B. litura by parasitic natural enemy insects throughout the entire development period is significant. After 3 years of investigation, a total of 6 parasitic natural enemies were found with high parasitic rates (see table). Parasitic eggs Trichogramma Trichogrammaevanescens, Trichogramma T.confusum; parasitic larvae have Hexamemis sp., Apodemus borer callus Apanteles ruficrus; parasitic pupae with cabbage budworm Neptune Propolis Netelia ocellaris; Another is not yet identified