| 落叶松八齿小蠹发生规律及测报技术 |
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| 引用本文： | 高长启,孙家宝.落叶松八齿小蠹发生规律及测报技术[J].东北林业大学学报,1998,26(1):24-28. |
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| 作者姓名： | 高长启 孙家宝 |
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| 作者单位： | [1]吉林省林业科学研究院 [2]黑龙江省森林保护研究所 |
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| 摘 要： | 采用踏查和标准地调查相结合的方法，对落叶松八齿小蠹发生规律进行了研究。结果表明：气候、立地条件，郁闭度，林木长势，林内卫生状态对该虫发生影响显著。在此研究的基础上，按立地条件等因子以及有虫株率将林分受害程度划分为４个危害等级。进行虫情监测，利用发育进度，有效积温的方法对该虫的发生期预测进行了研究。预测结果与实际发生基本一致、利用有效虫口基数和查迹法对该虫发生量进行了预测，其准确率均达到９０％以上。
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| 关 键 词： | 落叶松 八齿小蠹 发生规律 预测 |
Occurrance Regulation and Forecasting Technique of Ips subelongatus Motschulsky |
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| Gao Changqi,Ren Xiaoguang,Wang Dongsheng,Zhang Hongyan,Sun Shouhui.Occurrance Regulation and Forecasting Technique of Ips subelongatus Motschulsky[J].Journal of Northeast Forestry University,1998,26(1):24-28. |
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| Authors: | Gao Changqi Ren Xiaoguang Wang Dongsheng Zhang Hongyan Sun Shouhui |
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| Abstract: | In the present study, the occurrance regulation of Ips subelongatus Motschulsky was studied using the methods of general investigation and sample plot investigation Result revealed that the occurrance of the pest was greatly affected by climate, site condition, closing degree, growing situation of trees and saniation condition of forest site Based on the above study, according to the site condition and infested trees rate, the infested forest stands were devided into four danger grade and then the pests were monitored Forecasting of occurrance time was studied using the method of development progress and effective accumulative temperature, the result of forecasting showed basically unanimous with the actual situation The occurrance quantity of the pest was also studied by the method of effective pest base number and trace investigation, results showed that the degree of accuracy was over 90% |
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| Keywords: | Ips subelongatus Motschulsky Occurrance regulation Forecast |
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