小地老虎(Agrotis ypsilon Rottemberg)又名切根虫、夜盗虫,属鳞翅目夜蛾科,是一种严重为害茄科、豆科、十字花科、葫芦科等多种农作物的多食性害虫,据记载可为害36科100多种植物,在我国各省区均有分布。全年以春、秋2季发生较严重,是一种重要的地下害虫,主要以幼虫将幼苗近地面茎部咬断,使整株死亡,严重影响作物产量。 Agrotis ypsilon Rottemberg, also known as the root-cutting insects, night insects, is a Lepidoptera Noctuidae, is a serious damage to Solanaceae, Leguminosae, Cruciferae, Cucurbitaceae and other crops more than pests, According to records, 36 families and 100 kinds of plants can be harmed, which are distributed in various provinces and autonomous regions in our country. The annual occurrence of spring and autumn seasons more serious, is an important underground pests, the main larvae will seize the seedlings near the ground stems, the whole plant died, seriously affecting the crop yield.