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近年来,随着拉萨地区大白菜栽培面积不断扩大,根肿病害也逐年加重,严重影响了大白菜的品质和商品性,导致广大菜农遭受很大的经济损失,在发病率高的地块高达70%。大白菜根肿病为真菌之根肿病菌(Plasmodiophorabrassieae)所引起,其休眼孢子可长期残存土中。本文通过实地调查和试验,描述了大白菜根肿病发病病原、症状、发病规律、传播途径及其防治办法,对于拉萨地区大白菜种植有一定的指导意义。
In recent years, with the increasing cultivation area of Chinese cabbage in Lhasa, the clubroot disease has also increased year by year, seriously affecting the quality and commerciality of Chinese cabbage. As a result, the majority of vegetable farmers suffer great economic losses. In the areas with high incidence of up to 70%. The cabbage clubroot disease is caused by the fungus, Plasmodiophora brassieae, whose resting ocular spores can remain in the soil for a long time. This paper describes the pathogen, symptom, pathogenesis, route of transmission and control measures of cabbage clubroot disease through field investigation and experiment, which is of guiding significance to the cultivation of Chinese cabbage in Lhasa.