摘要
森林衰退病发生的原因，国外的学者对此有不同的见解，其致病因素也由单一因素发展到多种因素，因而在衰退病病原方面提出了若干的概念。该文就目前病原的几种概念进行简要叙述。
There are several concepts about the pathogen of forest declines in foreign countries.Single factor or multiple factors of the disease have been put forward by different forest pathologists.This paper simply describes these concepts.
出处
《中国森林病虫》
北大核心
1999年第5期38-39,共2页
Forest Pest and Disease
关键词
森林衰退病
病原
概念
forest decline,pathogen,concept
