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2008年第6期
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桉树枝瘿姬小蜂危害后桉树损失量测定
摘要:
对桉树枝瘿姬小蜂危害后桉树损失量进行测定，结果广林九号受害严重，巨桉受害相对较轻。对胸茎、树高、树杆、侧枝、叶片重量和叶片数量分别测定，以叶片的损失率最大。广林九号的平均损失率分别达到30.8%、29.2%、79.8%、88.1%、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%。
关键词:   桉树 桉树枝瘿姬小蜂 损失量
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Evaluation for the Growth Loss of Eucalyptus caused by Leptocybe invasa Fisher & La Salle
Abstract:
The Growth loss of Eucalyptus caused by Leptocybe invasa Fisher & La Salle were studied. The results showed that the damage of Guanglin nine type was the heaviest, the Huge Leaves type 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 Huge Leaves type. For Guanglin nine type, the average rate of loss of the lateral branches and of host branches is respective 88.1% and 79.8%, the loss of the tree height and diameter is 29.2% and 30.8%. For Huge Leaves type, 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%.
Key words:   Eucalyptus Leptocybe invasa growth loss evaluation
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