白蜡窄吉丁在不同受害等级白蜡树上垂直分布的研究  

Study on the vertical distribution of Emerald ash boreron the ash treeat different damage levels

作　　者：刘泽勇 张建国 王凤云 刘云江 崔建华 LIU Ze-yong;ZHANG Jian-guo;WANG Feng-yun;LIU Yun-jiang;CUI Jian-hua(Hebei Academy of Forestry and Grass Scie nces,Shijiazhuang,Hebei 050061;Hebei Technical Innovation Center for Forest Improved Variety,Shijiazhuang,Hebei 050061;Pingquan Forest Pest Control and Quarantine Station,Pingquan,Hebei 067500;Liaoheyuan Nature Reserve Management Office,Pingquan,Hebei 067500)

机构地区：[1]河北省林业和草原科学研究院,河北石家庄050061 [2]河北省林木良种技术创新中心,河北石家庄050061 [3]平泉市森林病虫害防治检疫站,河北平泉067500 [4]辽河源自然保护区管理处,河北平泉067500

出　　处：《河北林业科技》2022年第4期21-24,共4页Journal of Hebei Forestry Science and Technology

基　　金：河北省重点研发计划项目,农业高质量发展关键共性技术攻关专项资助项目。项目名称:白蜡窄吉丁综合防控技术研究(项目编号:20326512D)。

摘　　要：调查了不同受害程度白蜡树上白蜡窄吉丁在树体垂直高度上的分布。结果表明:(1)白蜡窄吉丁在被害树上的侵染部位和种群数量随着树体受害程度的加重而增加。(2)定殖侵染初期,主要集中在树体高度3~5m的主枝上,主干上极少发现危害。(3)随着虫口数量的增加,逐渐向侧枝和树体上部转移侵染,危害高度取决于枝条的粗度,枝条粗度小于3cm时,基本不会受到侵染。(4)当树势极度衰弱或树冠部分开始死亡时,白蜡窄吉丁会转而集中危害树干,直到地上部分死亡。(5)未发现白蜡窄吉丁危害根系的症状。In this study,we investigate the vertical distribution ofemerald ash boreron the ash treeat different damage levels. The results show that the population ofemerald ash borerand the infected part of the tree various at different damage levels.At the early stage of infection,the insectis mainly concentrated on the main branches at the height of 3-5 meters,and few hazards are found on the trunk. As the population increases,Emerald ash borergradually spread to the side branches and the upper part of the tree body,the heightsof which depend on the thickness of the branches. When the thickness of the branch is less than 3 centimeters,they will not be infected. When the tree is extremely weak or the crown part of the tree begins to die,Emerald ash borer will turn to congregate on the trunk until the overground part of the tree dies. No symptoms of root damage caused by emerald ash borerwere found.

关 键 词：白蜡窄吉丁 虫口数量 垂直分布 受害程度 白蜡树 

分 类 号：S763.38[农业科学—森林保护学]