| 相思拟木蠹蛾为害西南桦的调查研究 |
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| 引用本文： | 刘有莲,庞正轰,苏付保,李荣珍.相思拟木蠹蛾为害西南桦的调查研究[J].植物保护,2012,38(4):156-158. |
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| 作者姓名： | 刘有莲 庞正轰 苏付保 李荣珍 |
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| 作者单位： | 广西生态工程职业技术学院,柳州,545004 |
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| 基金项目： | 广西林业厅“十一五”科技项目 |
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| 摘 要： | 于广西百色市老山林场调查了相思木蠹蛾对西南桦的为害情况,并进行了不同高度虫孔数组内单因素方差分析、不同整枝方式虫孔平均数差异显著性检验、种群密度估计模型拟合研究。结果表明:西南桦有虫孔株率70%,虫孔密度2.79个/株;以2m为区间段,无虫孔的占74.8%,有1个以上虫孔的占25.2%;相思拟木蠹蛾对树干高度有选择性,树干4～6m间虫孔数最多;幼虫侵入期人工修枝会加重相思拟木蠹蛾为害;以无虫株率估计相思拟木蠹蛾种群密度的模型为^x=1.420 8(-lnP0)1.476 8。相思拟木蠹蛾为害对西南桦木材品质有较大影响,应加强监测防治技术研究。
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| 关 键 词： | 西南桦 相思拟木蠹蛾 调查研究 |
Investigation on Lepidarbela baibarana on Betula alnoides |
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| Liu Youlian,Pang Zhenghong,Su Fubao,Li Rongzhen.Investigation on Lepidarbela baibarana on Betula alnoides[J].Plant Protection,2012,38(4):156-158. |
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| Authors: | Liu Youlian Pang Zhenghong Su Fubao Li Rongzhen |
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| Institution: | (Guangxi Eco-engineering Vocational & Technical College,Liuzhou 545004,China) |
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| Abstract: | The forest of Betula alnoides in Laoshan Forest Farm in Baise City of Guangxi was investigated to study the occurrence and damage of the Lepidarbela baibarana,a boring beetle of B.alnoides.The wormhole numbers at different heights were analyzed using oneway ANOVA.The results showed that the ratio of B.alnoides trees with wormholes was 70%,with a wormhole density of 2.79 wormholes per plant.L.baibarana was selective for the height of tree trunks.The wormhole number was maximum when the height above ground was 4-6 m.Artificial pruning might deteriorate the invasion of larvae.The population density-estimated model was =1.420 8(-lnP0)1.476 8.In summary,the damage of L.baibarana is a serious problem to B.alnoides,the quality of which can be greatly affected.Research on prevention and control technology should be strengthened. |
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| Keywords: | Betula alnoides Lepidarbela baibarana investigation |
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