甜菜夜蛾(Laphygma exigua hubner)俗称青虫,是一种间歇性大发生的多食性害虫。近几年在安阳市蔬菜田特别是大葱田发生猖獗,为害日趋严重,已由次要害虫上升为大葱田的主要害虫。1997年和1999年曾两度在我市大葱田暴发成灾,造成大葱严重减产,品质下降。 Laphygma exigua hubner, commonly known as caterpillar, is a polyphagous pest that occurs intermittently. In recent years, vegetable fields in Anyang City, especially the field of lush rampant rampant, increasing damage from secondary pests to the main pests of scallion. In 1997 and 1999 twice in the city scallop field outbreaks, causing a serious cut green onion, the quality of decline.