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华山松(Pinus armandi)是我省西部地区的主要造林树种,其适应性强,生长迅速,干形通直,材质优良,经济价值高,为优良的建筑和家具用材。但是,近年来在华山松幼林内发现菌核病的严重为害,造成林木死亡。菌核病在1年生禾苗作物中有为害记载,但为害华山松则尚未见报道。因此,调查研究华山松菌核病,找出行之有效的防治措施,对促进华山松生产有重要意义。一、为害部位和病症华山松菌核病为害根和茎基部位。病菌首
Pinus armandi (Pinus armandi) is the main afforestation tree species in the western region of our province. Its adaptability, rapid growth, dry and straight, good material, high economic value, excellent for building and furniture timber. However, in recent years, sclerotinia sclerotiorum forest found serious damage, resulting in forest deaths. Sclerotinia scabies in the annual seedlings crop damage records, but the damage of Pinus armandii has not yet been reported. Therefore, the investigation of Huashania sclerotiorum, find out effective prevention and control measures, to promote the production of Huashan pine is of great significance. First, the damage parts and diseases Huashania sclerotiorum damage root and stem base site. Pathogen first