华山松是我区主要用材树种,除威宁、赫章二县部份地区有天然林外,其余各县多为人工林。近年来由于华山松煤污病日趋严重,扩展迅速,使成片森林生长受到严重影响,甚至死亡。为此,自1984年以来我所对该病的分布及危害情况进行了调查,并于1985年在毕节县拱拢坪林场驻点观察试验,对该病的病原、发病规律以及防治方法进行了研究。 Huashan pine is my main timber species, except Weining, Hezhang two counties in some areas have natural forests, the remaining counties mostly artificial forests. In recent years, due to the increasing severity of Huashan Songyu disease, the rapid expansion has caused serious damage to the forest growth and even death. To this end, since 1984, I conducted a survey of the distribution of the disease and the situation, and in 1985 in Bijian County Gong Lin Ping Lin field station observation test, the pathogen of the disease, the incidence and prevention methods were the study.