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樟子松(pinus syvestris var.mongolica)是欧洲赤松的地理变种,天然分布于大兴安岭、红花尔基一带,内蒙的伊尔施是其自然分布的最南端。 樟子松材质优良,是经济价值较高的用材树种,耐寒、耐瘠、耐旱适应性强,是“三北”防护林体系重要组成树种。 我场地处围场县北部,属于冀北山地,是大兴安岭与内蒙古草原过渡性地带,从1963年开始樟子松引种工作,1966年进行大面积造林,现全场已营造樟子松林5.4万亩,已郁闭成林6500亩,部分进入结果期。全面分析我场在气候、地理位置、土壤等几个方面引种樟子松的优势条件,调查其生长情况,总结经验,将对我省冀北山地发展樟子松提供可靠依据。
Pinus sylvestris var. Mongolica is a geographical variation of Pinus densiflora in the world. It is naturally distributed in the Greater Hinggan Mountains and Honghuaerji, and the Erzig, Inner Mongolia, is the southernmost point of its natural distribution. Pinus sylvestris var. Mongolica is a timber species with high economic value. It is an important tree species for the “Three Norths” shelterbelt system in cold, barren and drought tolerant. My field is located in the northern part of Weichang County. It belongs to the mountainous area of Hebei Province. It is a transitional zone between Daxinganling and Inner Mongolia grassland. Since 1963, the introduction of Pinus sylvestris var. Mongolica has been started. Large-scale afforestation was carried out in 1966. At present, 54,000 mu of Pinus sylvestris var. Has closed forest 6,500 acres, part of the results into the period. A comprehensive analysis of my field in the climate, geographical location, soil and other aspects of the introduction of the advantages of Pinus sylvestris, to investigate the growth of the situation, sum up experience will provide a reliable basis for the development of Pinus sylvestris in the mountainous areas of Hebei Province.