【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。更多还原

【Abstract】 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 12.4 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.更多还原