日本辽杨、美洲黑杨及其杂交无性系的引进与苗期生长评价

Appraisal on the introduction and Seedling growth of P. maximovwiczii,P. deltoides and Their Clonic Hybridization

通过开展日本辽杨（Ｐ．ｍａｘｉｍｏｖｗｉｃｚｉｉ）、美洲黑杨（Ｐ．ｄｅｌｔｏｉｄｅｓ）及其杂交品系的引种苗期试验，对不同海拔高度地域的不同无性系系列的扦插苗木存活率及高生长指标进行分析，结果表明不同无性系系列间存在显著差异，并通过模糊聚类等分析方法，初步选择出不同海拔高度地区，苗期生长较好的引进杨树无性系。

Through the experiment of the exotic P. maximovwiczii,p. deltoides and their clonic hybridization during the seeding stage, and the analysis on the survival rate and hi-growth index of the cutting stocks of different clonic series grown at different altitude,the result shows that there are obvious difference in different Iconic series,The clonic populus grown at different altitude which show better growth during the seediling stage are introduced firstly with the analysis approach of dendrogram.