杨树优良无性系选择初探

摘要

引种杨树无性系进行对比造林试验,对保存率大于70%的7种无性系的生长量和稳定性进行分析评价,结果选择出哲林4号和白林2号杨,抗逆性比较强,生长量也比较高。8年生幼树的胸径生长量达12.4cm和11.6 cm,为对照树种小黑杨的124%和116%;树高为11.7 m和12.1 m,为对照树种的129%和133%。哲林4号和白林2号杨综合评定为优良无性系。%Through analyzing and evaluating the growth and stability of seven clones of Populus L. with preserving rate more than 70 percent, the results show that Zhelin No. 4 and Bailin No. 2 have higher stress resistance and growth. The growth of diameter for 8 - year young tree can reach to 12.8 cm and 11.6 cm, which is 124 percent and 116 percent of the control. The tree height for 8 - year young tree can reach to 11.7 m and 12. 1 m, which is 129 percent and 133 percent of the control. Zhelin No. 4 and Bailin No. 2 are comprehensively evaluated as fine clones.