卵孢子是人参疫病进行初侵染的繁殖体,游动孢子是进行再侵染主要器官。用游动孢子接种参根,地上部产生典型症状只占发病参根的2.5％。接触传播是参床土壤中人参疫病根腐扩展蔓的主要方式。参根伤痕是疫病发生的诱因。指出了采用隔年土,大垄耕翻日晒,可促进卵孢子萌发,大量降低初接种量及保证参床排水透气性能的生态防病机理。 Oospora is the initial infection of ginseng disease propagules, zoospores is the main organ for re-infection. Inoculated with zoospores ginseng root, the top of the typical symptoms of disease accounted for only 2.5% of the root. Contact transmission is the main method of ginseng root-rot expansion in ginseng-infected soil. Ginseng scars are the cause of the disease. Pointed out that the use of soil in the following year, a large ridge plowing the sun, can promote the spore germination, reduce the number of primary inoculations and to ensure that the drainage bed of breathable performance of the ecological disease prevention mechanism.