土壤原生病原体是影响植被和生态系统的重要因子,但是在森林生态系统中的地位和作用未能得到充分认识和研究。文中主要根据国外对土壤原生病原体的研究情况,对其类型、传播途径及植被的防御机制进行阐述,并探讨土壤有益微生物和土壤原生病原体的相互作用及原生病原体对生态系统的影响机制。 Soil native pathogens are important factors affecting vegetation and ecosystems, but their status and role in forest ecosystems have not been fully recognized and studied. In this paper, mainly based on foreign research on the native pathogen of the soil, the type, route of transmission and the defensive mechanism of vegetation are discussed, and the interaction between soil beneficial microorganism and the soil protozoa and the mechanism of the impact of the native pathogen on the ecosystem are discussed.