摘要
对桉树枝瘿姬小蜂危害后的桉树损失量进行测定,结果表明广林九号桉受害严重,巨桉受害相对较轻。对胸径、树高、树干、侧枝、叶片重量和叶片数量分别测定,以叶片的损失率最大,广林九号桉的平均损失率分别达到30.8%,29.2%,60.0%,76.0%,98.4%和91.5%,巨桉的损失率分别达到9.1%,20.5%14.5%,20.6%,22.4%和20.9%。
The growth loss of Eucalyptus caused by Leptocybe invasa Fisher ＆ La Salle were studied. The results showed that the damage of Eucalyptus grandis × E. urophyUa Guanglin nine type was the heaviest, E. grandis was following. Among the two types, the rate of loss of leaves is the highest, 98.4% and 91.5% in Guanglin nine type, 22.4% and 20.9% in E. grandis. For Guanglin nine type, the average rate of loss of the lateral branches and of limb is respective 76.0% and 60.0%, the loss of the tree height and diameter is 29.2% and 30.8% . For E. grandis, the loss of the lateral branches and of the host branches is 20.6% and 14.5%, loss of the three height and diameter is 20.5 % and 9.1%.
出处
《广东林业科技》
2008年第6期58-60,共3页
Forestry Science and Technology of Guangdong Province
关键词
桉树
桉树枝瘿姬小蜂
损失量
Eucalyptus, Leptocybe invasa, growth loss evaluation
