冬春季节危害花椰菜的害虫种类主要有蚜虫、白粉虱、小菜蛾、菜粉蝶、甜菜夜蛾等,近几年尤以白粉虱、小菜蛾、甜菜夜蛾为害严重。一、为害特征1.蚜虫:一般以成虫和若虫聚集在叶背面及心叶等部位刺吸汁液,使花椰菜叶片发黄甚至脱落,同时可传播病毒病,使植株黄化,生长缓慢,甚至死 In winter and spring, the main pests of cauliflower are aphids, whiteflies, diamondback moth, cabbage butterfly and beet armyworm, especially in the fields of whitefly, diamondback moth and beet armyworm in recent years. First, the harmful characteristics 1 aphids: the general accumulation of adult worms and nymphs on the back of the leaf and other parts of the heart thorn sucking juice, so that leaves of cauliflower yellow or even fall off at the same time can spread the virus disease, the plant yellow, slow growth and even death