菜螟又称菜心野螟、萝卜螟、钻心虫等。主要危害萝卜、白菜、包菜、花菜、红菜苔等十字花科蔬菜，尤以秋萝卜、大白菜、包菜幼苗受害最重。菜螟幼虫钻蛀取食心叶及叶片，受害幼苗因生长点被破坏而停止生长或萎蔫死亡，造成缺苗断垄。高龄幼虫还能蛀食茎杆，形成隧道，甚至钻食 Cai borer, also known as cabbage wild borer, radish borer, bored worms and so on. Major hazards radish, cabbage, cabbage, cauliflower, red cabbage and other cruciferous vegetables, especially autumn radish, cabbage, cabbage seedlings most affected. Drilling larvae borer feeding heart and leaves, the victim seedlings were damaged due to the growth of growth stops or wilting death, resulting in missing seedlings broken ridge. Older larvae can eaten stems, forming tunnels, or even eating