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本文分析了毛白杨Ｄ测定林三个试验点的４年生林木。通过对１３个无性系的方差、Ｇ×Ｅ互作分析表明，各试验点无性系间存在着极显著差异，各地点间以及无性系与地点交互作用差异也极显著；通过对无性系的稳定性和生长适应性及综合评定，选出４个生产力高的优良无性系可在兰州、武威、白银及相似气候区推广；从分析中看出，这些无性系的生长量值与稳定性和适应性关系是多变的，而且是互相独立的。
This paper analyzed the 4-year-old trees in three test sites of Populus tomentosa D. Through the analysis of the variance of 13 clones, the G × E interaction analysis showed that there were extremely significant differences among clones at each experimental point, and there was also significant difference in the interaction between clones and places. The clonal stability Sexual and growth adaptability and comprehensive evaluation, four excellent clones with high productivity were selected to be popularized in Lanzhou, Wuwei, Baiyin and similar climatic zones. From the analysis, we can see that the growth of these clones is consistent with the stability and adaptation Sexual relationships are changing and independent.