通过对白城 41#等 2 3个杨树无性系进行育苗、造林随机区组试验、差异性分析结果指出 ,各无性系之间苗期的高、径生长量都具有显著差异 ,但造林后第 4a差异不显著 (α<0 .0 5 )。系统聚类分析指出 ,2 3个无性系可以分为 6类 : 白城小黑等 5个 ; 桓仁等 3个 ; 金县等 4个 ; 箭杆杨 ; 昌图等 7个 ; 健康杨等 3个 ,在此基础上综合评价筛选出适合科尔沁沙地栽植的无性系为健杨、法库 1#、兴城、白林 2 #、白城 41#、鞍杂、法库 2 # According to the randomized block experiment of 23 poplar clones of Baicheng 41 #, the results of difference analysis indicated that the height and diameter growth of seedlings of all clones had significant differences. However, The difference was not significant (α <0.05). The phylogenetic analysis indicated that 23 clones could be divided into 6 categories: Baicheng Xiaohei 5, Huanren 3, Jinxian 4, Arrowhead Yang and Changtu 7, Yang Yang et al 3 Based on this, the clones suitable for Horqin sandy land were screened for Jian Yang, Faku 1 #, Xingcheng, Bai Lin 2 #, Baicheng 41 #, Saddle complex, Faku 2 #