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对１０年生毛白杨无性系５个树体性状组的关系分析结果表明，材积、枝下高、圆满度三个重要经济性状的改良潜力较大，通直度的改良效果较差。主干和侧枝两性状组与经济性状组的关系密切，分别解释了经济性状组５４７５％和２８７６％的相关变异。对经济性状实施选择时，可把树高、胸径、Ｈ／２径、冠幅、侧枝的数量与密度、主枝的长与粗以及新枝长和节数作为间接选择指标。
The analysis of the relationship between the five tree traits of 10-year-old Populus tomentosa clones showed that the three economic traits of volume, branch height and fullness had better potential for improvement and the effect of straightness improvement was poor. The main trunk and collateral traits were closely related to the trait traits, which explained 5475% and 2876% of the correlations respectively. When selecting economic traits, tree height, DBH, H / 2 diameter, crown width, number and density of lateral branches, length and thickness of main branches and new branches and nodes can be used as indirect selection indicators.