前言樟子松(Pinus sylvestris var.mongolioa litvtn.)是欧洲赤松的一个变种。它主要分布在大兴安岭北部山地和呼伦贝尔草原红花尔基一带的草原上,具有耐寒、抗旱、适应性强的特点,是我区营造用材林、农田防护林很有前途的树种之一。深受三北地区林业科研、生产部门的重视,相继进行引种试验,远远超过其原产地的分布界线。我院树木园 Introduction Pinus sylvestris var. Mongolioa litvtn. Is a variant of Japanese red pine. It is mainly distributed in the northern mountains of Daxinganling and the grasslands of the Hulunbeier Prairie Honghuaerji, which has the characteristics of cold hardiness, drought resistance and adaptability. It is one of the promising tree species for timber plantation and farmland shelterbelts in our district. By the three northern regions of forestry research, production sector attention, have been introduced test, far beyond the boundaries of its origin distribution. Arboretum in our hospital