菜螟〔Oeobia un-dalis=Phalaena undalis=Hellulaundalis Fabricius〕又称菜心野螟、萝卜螟、甘蓝螟、白菜螟、吃心虫、钻心虫、剜心虫等,分类上归鳞翅目、螟蛾科。菜螟主要危害十字花科白菜类、甘蓝类、芥菜类和萝卜等根菜类蔬菜,还可危害菠菜等,以初龄幼虫蛀食幼苗大菜螟心叶,吐丝结网,轻则影响菜苗生长,重者可致幼苗枯死,造成缺苗断垅;高龄幼虫除啮食心叶外,还可蛀食茎髓和根部,并可传播细菌软腐病,引致菜株腐烂死亡。该虫广泛分布于全国各蔬区,尤以萝卜、白菜、甘蓝受害为重。
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