六盘山地区自1964年开始引种华北落叶松以来,现在造林面积已达8700余亩,其中不少已郁闭成林。本文就华北落叶松优势木的平均高作为生长指标,用数理统计和数量化理论(Ⅰ)的方法分析了华北落叶松生长与立地条件的关系,找出了六盘山林区影响华北落叶松生长的主导因子,为适地适树提供科学依据。 Since the introduction of Larix principis-rupprechtii in Liupanshan region in 1964, the area now afforestation has reached more than 8,700 mu, many of which have been closed to forests. In this paper, the average height of Larix principis-rupprechtii was taken as the growth index. The relationship between the growth of Larix principis-rupprechtii and the site conditions was analyzed by mathematical statistics and quantitative theory (Ⅰ), and the influence of Larix principis-rupprechtii The dominant factor for the appropriate tree to provide a scientific basis.