榨菜菌核病为真菌性病害,为榨菜留种田的一种主要病害。成株期各部位均可发病,但以茎秆上发病为主。温度低而湿度大时发病严重,在榨菜留种田,菌核病一般在3~5月发生。1.发病症状先从主茎基部或侧枝5~20厘米处开始,初呈淡褐色水浸状病斑,稍凹陷,渐变灰白色,湿度大时也长出白色菌丝,皮层霉烂,在病茎表面及髓部形成黑色菌核,干燥 Tuberculous sclerotinia is a fungal disease, which is a major disease of mustard farming. All parts of adult stage disease can occur, but the onset of the main stem. Low temperature and humidity when the incidence of serious, stay in the mustard farming, sclerotinia usually occur in 3 to May. 1. The onset of symptoms from the base of the main stem or collateral 5 to 20 cm at the beginning of the initial light brown flooded lesion, slightly depressed, gray gradient, humidity also grow white mycelium, cortex rotten, in the diseased stem The surface and pith form black sclerotia, dry