近几年来,各地十字花科蔬菜受小莱蛾、甜莱夜蛾危害呈上升趋势,尤其是以秋大白菜、萝卜受害最为严重。由于这两种害虫抗药性极强,一般的杀虫剂防治效果不理想,现给大家介绍一些防治要领及使用药剂的方法:一、治早治小这两种害虫的幼虫在2龄以前抗药性最弱,也是 In recent years, around the cruciferous vegetables by small Lepidoptera, Leptospira moth damage is on the rise, especially in autumn cabbage, radish victims most serious. As these two kinds of pest resistance is extremely strong, the general effect of insecticide control is not ideal, now we will introduce some methods of prevention and treatment and use of pharmaceuticals: First, the treatment of early treatment of small larvae of these two pests in 2 before the anti- The weakest medicine, too