近两年，集安市头道镇白菜根肿病的发生越来越普遍，给白菜的生产带来严重的影响。 发病症状；病株叶色变淡，凋萎下垂，在晴天中午前后尤为明显。病株根部肿大呈瘤状，其形状大小受着生长部位影响较大，主根上的瘤多靠近上部，球形或近球形，表面凹凸不平，粗糙，后期表皮开裂 In the past two years, the occurrence of cabbage clubroot disease in Tou’ao Town, Ji’an City has become more and more common, which has a serious impact on the production of cabbage. Morphological symptoms; diseased plants pale, withered and drooping, especially in the sunny before noon. The diseased root swelling was nodular, its shape and size affected by the growth of the larger parts of the main root of the tumor near the upper, spherical or nearly spherical, uneven surface, rough, late epidermal cracking