天山云杉 (Picea screnkiana var. tianschanica)天然分布区的下限海拔 1 4 50～ 1 80 0 m,进行速生丰产造林试验 ,结果表明 ,灌丛地横向割灌 ,纵向割灌和丛植 3种处理效果显著 ;灌丛地和欧洲山杨 (Pupulus tremula)皆伐地采用大穴整地和丛植 ,这 2种立地类型 1 5 a生的天山云杉幼树树高分别比 CK高出 40 .0 %和 46.5% ,天山云杉在不同立地类型高生长的优劣顺序为灌丛地 >欧洲山杨皆伐地 >欧洲山杨—天山云杉皆伐地 The lower limit of Picea screnkiana var. Tianschanica natural distribution ranged from 1450 to 1880 m, and the fast-growing and high-yielding afforestation experiment was carried out. The results showed that there were three kinds of treatments: horizontal cut irrigation, vertical cut irrigation and clump planting The tree height of spruce and Tianshan Mountains were higher than that of CK by 25.0% and 50.0% respectively in CK and Pupulus tremula, And 46.5%, respectively. The order of the succession of Tianshan spruce in different habitats was shrubland> Populus euphratica> Populus euphratica-Tianshan spruce