油菜菌核病和细菌性软腐病的病状有惊人相似之处,最初在茎秆上产生淡褐色水渍状斑点,后扩大成长椭圆形或不规则形病斑,中间灰白色,边缘褐色,特别是病部均呈软腐状。这二种病可以用以下二种方法进行鉴别: 田间剥秆检查法。在田间取病茎一段,沿纵向剥开,如发现病斑内部有白色菌丝体,或有黑色菌核出现,就为菌核病;用手挤压病部,仅有少许黄色汁液流出的为细菌性软腐病。 Rape sclerotinia and bacterial soft rot disease striking similarities, the first streaks of light brown water stain on the stem, after the expansion of the growth of oval or irregular shaped lesions, the middle of the gray, the edge of the brown, especially The disease is soft rot. The two diseases can be identified by the following two methods: Field stripping stalk test. Sick stem in the field for a period, along the vertical peel, found within the lesion white mycelium, or black sclerotia, sclerotiorum; squeeze the disease by hand, only a small yellow juice outflow For bacterial soft rot.