毛白杨优良无性系的选择模式及生长与地理气候因子关联分析

Quantitative Selection of Advanced Clones and Related Analysis between the Provenance Growth and Geographical and Climatic Factors of White Poplar

通过对由１５７个优良无性系组成的毛白杨种源试验林的研究，提出了优良无性系选择的定量公式，并对前５０名无性系进行了排序，结果表明。

A normal quantitative model for selection of the advanced clones was put forward after studying on the tested provenance forests of White Poplar, Which consisted of 157 clones, the sorted 50 advanced clones were also listed. The results of related analysis showed that the main factors influencing the growth of White Poplar were annual precipitation and mean temperature in January.