榨菜白锈病属真菌性病害,一般多在秋末冬初或春季发生,最适宜的发病温度为10~15℃,常在连续几天阴雨后,气温逐渐回升时盛发或流行。地势低洼、排水不良、田间湿度大、偏施氮肥的田块容易发病。一、发病症状一般发生于叶片背面,初产生淡黄色斑点,稍后病斑处叶表皮隆起呈白色脓疱状(孢子堆),周围有褪色晕带,最后病斑处叶片表皮破裂反卷,散出白色粉末状物,为病菌孢子囊。白色疱斑对应叶片的正面呈浅黄色,边缘不明显。有的发病叶片上疱斑多达几十个,使整个叶片发黄,失去功能叶的作用。留种植株的茎花 Tuber white rust is a fungal disease, usually in the late autumn or early spring or spring occurs, the most appropriate onset temperature of 10 ~ 15 ℃, often in a few days after the rain, the temperature gradually rising Sheng or epidemic. Low lying, poor drainage, field humidity, partial nitrogen fertilizer prone to disease. First, the incidence of symptoms generally occur in the back of the leaves, the first generation of yellowish spots, later lesions at the leaf epidermis uplift was white pus-like (spore heap), around the discolored halo belt, the last lesion leaf epidermis rupture, Scattered white powder for the bacteria sporangia. White blister spot corresponding to the front of the leaves pale yellow, the edge is not obvious. Some blisters on the incidence of up to dozens of leaves, so that the entire leaves yellow, loss of function of the role of leaves. Stay plant stem flowers