| 青杨虎天牛防治指标的研究 |
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| 引用本文： | 刘笑平,张红英,王林英. 青杨虎天牛防治指标的研究[J]. 吉林林业科技, 2003, 32(4): 19-21 |
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| 作者姓名： | 刘笑平 张红英 王林英 |
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| 作者单位： | 1. 吉林省白石山林业局,吉林,吉林,132503
2. 吉林省林业厅驻红石林业局专员办,吉林,吉林,132403 |
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| 摘 要： | 根据青杨虎天牛虫害对杨树造成的损失，依虫口密度将杨树分5个等级，并对所设标准木进行生长量和虫口密度(羽化孔数 幼虫数)的调查，经分析0级木与Ⅱ、Ⅲ、Ⅳ级木之间高生长、径生长有明显差异，通过材积损失量与虫口密度间关系方程V=0．002N^0.3579，求得防治指标N=1头／株。
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| 关 键 词： | 青杨虎天牛 杨树害虫 防治指标 虫口密度 生长量 材积损失量 |
| 文章编号： | 1005-7129(2003)04-0019-03 |
| 修稿时间： | 2003-03-19 |
Study on control index of Xylotrechus rusticus |
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| LIU Xiao-ping,ZHANG Hong-ying,WANG Lin-ying. Study on control index of Xylotrechus rusticus[J]. Jilin Forestry Scicnce and Technology, 2003, 32(4): 19-21 |
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| Authors: | LIU Xiao-ping ZHANG Hong-ying WANG Lin-ying |
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| Abstract: | Based on the losses to poplar trees damaged by Xylotrechus rusticus,the trees were divided into 5 grades, and an investigation of tree increment and population density was conducted by sample tree method. The results showed that: longitudinal growth and diameter increment have significant differences between D and 2,3,4 tree class; and control index is one head per tree by correlation equation between volume losses and population density. |
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| Keywords: | Xylotrechus rusticus control index |
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