摘要
以无性系DH32-29、EC14、C6、巨桉、尾叶桉U6为参试品种,对参试品种3年林的各项生长指标、抗逆性指标等进行了系统观测、评价。结果表明,在参试品种中,DH32-29的平均胸径、树高、材积生长量均最大,分别达到14.01 cm,13.8m和0.1061m3,DH32-29的耐高温干旱能力最强,在连续42℃高温下,造林保存率最高达89.26%;低温胁迫条件下,DH32-29耐寒性最强,寒害指数和寒害率均为0。试验证明,DH32-29可作为重庆西部低海拔生态区域的优良种源,并可在该地区退耕还林、速生丰产林、园林绿化中加以应用。
With the clonal DH32 -29, EC14, C6, Eucalyptus grandis, E. urophylla U6 as the breeds, we observed and evaluated systematically various growth index, resistance index and so on of the forest for 3 years. The results showed that the average diameter, tree height and growth amounts of DH32 - 29 were the largest, reached 14. 01cm, 13. 8m and 0. 1061m^3. Ability of bearing the high temperature and drought of DH32 -29 was the best with the conditions of 42℃, the survival rate reached 89.26%. Under the conditions of low temperature the injury index and injury rate of DH32 - 29 were lowest. The fast -growing and high -yield seed, DH32 -29, could be the good seed source of low - altitude eco- region in the western Chongqing. The cloned seedling could be used to return the grain plots to forestry, found the fast - growing and high - yield forest and afforest garden in Chongqing. This study expanded the planter scope of Eucalyptus urophylla × E. grandis ' DH32 - 29' .
出处
《林业科技》
2009年第3期8-10,共3页
Forestry Science & Technology
基金
重庆市科委攻关项目(2006AC1061)
重庆市教委重点科研项目(KJ071207)
关键词
桉树
引种
抗逆性
评价
选择
Eucalyptus
Introduction
Resistance
Evaluation
Selection