大白菜是深受人民喜食的蔬菜品种之一。近年来,由于栽培制度和生态环境的改变,白菜根肿病、白菜细菌性角斑病、白菜软腐病、甜菜夜蛾、美洲斑潜蝇、白粉虱和烟粉虱等病虫害的发生呈上升趋势,严重影响了大白菜的产量和质量。为有效地指导防治,现将大白菜常见病虫害的防治技术介绍如下: Chinese cabbage is one of the vegetable varieties popular with the people. In recent years, due to the change of cultivation system and ecological environment, the occurrence of cabbage clubroot disease, cabbage bacterial angular leaf disease, cabbage soft rot disease, beet armyworm, leaf blotch, whitefly and whitefly pests and other pests and diseases are on the rise The trend has seriously affected the yield and quality of Chinese cabbage. In order to effectively guide the prevention and control, we now introduce the prevention and treatment of common pests and diseases of cabbage as follows: