无土栽培蔬菜的叶部病害基本与露地栽培相同，但根部病害尤其是腐霉菌引起的根腐病已成为无土栽培蔬菜中的突出问题。1症状新建的无土栽培蔬菜生产场刚开始生产时，植株健壮，但生产半年至一年后，即见一些蔬菜如茵茵、小白菜、菠菜、荣菜、黄瓜、甜瓜等染有根腐病，初时根部开 Leafless disease of soilless-cultivated vegetables is basically the same as open-field cultivation, but the root rot disease especially root rot caused by Pythium has become a prominent problem in soilless culture vegetables. 1 Symptoms Newly-built soilless culture vegetable production plant just started production, robust plants, but production six months to a year later, see some vegetables such as Yin Yin, Chinese cabbage, spinach, wing vegetables, cucumber, melon and other stained with root rot Ill, early root open