在秋大白菜的短期营养生长中,常先后发生多种病害。其中以病毒病、霜霉病、软腐病为主要三大病害,并伴随黑斑病、白斑病、炭疽病、黑腐病等病害的流行危害。适宜发病条件时,诸多病害常会单独和混合发生。为控制病害的多种危害形式,现按白菜不同生长期内的病害发生及主治兼防用? In the short-term vegetative growth of autumn Chinese cabbage, there often occur a variety of diseases. Among them, virus disease, downy mildew and soft rot disease are the three main diseases, accompanied by the epidemic hazards of black spot, vitiligo, anthracnose and black rot disease. Suitable conditions for the disease, many diseases often occur alone and mixed. For the control of the disease a variety of forms of harm, now according to the cabbage in different growth stages of disease and attending and anti-use?