甜菜夜蛾 　　甜菜夜蛾主要为害甜菜、白菜、 萝卜、甘蓝、菠菜、番茄、辣椒、大葱等。近年有严重发生的趋势，尤其对秋菜造成严重为害。以幼虫食害叶片。初孵幼虫吃叶成透明小孔，长大后吃成孔洞和缺刻，严重时叶片成网状。为害处常有细丝缠绕的粪屑。萝卜、白菜苗期受害能造 Beet armyworm beet armyworm mainly harm beet, cabbage, radish, cabbage, spinach, tomatoes, peppers, green onions and so on. In recent years, there have been serious trends that have taken a serious toll on autumnal vegetables. To larvae eat leaves. Freshly hatched larvae eat into a transparent small hole, grow into a hole and notch, in severe cases, leaves mesh. Damage is often filament wound feces. Radish, cabbage seedling victims can create