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大白菜常见的三大病害是病毒病、霜霉病和软腐病。 病毒病:又称花叶病,主要病源是芜青花叶病毒(简称TuMV),黄瓜花叶病毒(简称CMV)和烟草花叶病毒(简称TMV)危害较少。大白菜的病毒病最易在苗期感病.发病愈早,受害愈重。苗期感病后.心叶明脉及沿叶脉失绿.继而呈花叶、皱缩或形成褐色坏死斑及条斑.严重时不形成叶球。
The three common diseases of Chinese cabbage are virus disease, downy mildew and soft rot. Virus disease: also known as Mosaic disease, the main source of disease is Wuhu Mosaic Virus (referred to as TuMV), cucumber mosaic virus (CMV) and Tobacco Mosaic Virus (TMV) less harmful. Chinese cabbage is most susceptible to virus disease at seedling stage, and the earlier the disease, the harder it is. Seedling after the disease. Ming Ming vein and chlorosis along the veins, followed by mosaic, shrinkage or the formation of brown necrosis spots and streaks. Serious does not form lobes.