山东长岛综试区松墨天牛种群动态调查

Dynamic Monitoring of Monochamus alternatus in Changdao Comprehensive Test Area

为给长岛综试区松材线虫病防治提供依据和技术指导,2019-2021年在南长山岛、北长山岛、大黑山岛、砣矶岛、大钦岛等5个松林地主要分布岛屿,选择代表性林分和林地,按约每3 hm 2在空气流通较好地段悬挂1个ZM-80型诱捕器方法,对长岛综试区松林地松墨天牛成虫数量动态进行了调查研究,结果为2019-2021年5个岛屿松墨天牛成虫数量整体呈下降趋势,下降幅度为35.3%~58.6%,是综合防治的结果;一年中松墨天牛成虫主要发生在7-9月,该阶段占年总数量74.3%~88.6%,数量高峰期南长山岛、北长山岛、大黑山岛在7月,砣矶岛、大钦岛在8月;气象条件,尤其是≥10℃有效积温、林分树种组成、人为活动等对松墨天牛发生有很大影响。长岛综试区松材线虫防治应加强检疫检测、林地抚育与结构调整、诱捕器诱捕成虫等综合防治措施。

To provide the technical guidance to control pine wood nematode,one pest trap(ZM-80)in every 3 hm2 was hang on in the trees based on the pine forest in Nanchangshandao,Beichangshandao,Deheishandao,Tuojidao and Daqindao,to monitor the dynamic change of Monochamus alternatus from 2019 to 2021.The result showed that Monochamus alternatus population was in decline ranging from 35.5%to 58.6%,indicating the integrated control effect.The adult insects of Monochamus alternatus occurred from July to September,accounting for 74.3%to 88.6%of annual total number.The maximum population of Monochamus alternatus in Nanchangshandao,Beichangshandao and Daheidao occurred in July,and that in Tuojidao and Daqindao occurred in August.Meteorological condition like accumulated≥10℃temperature,composition of forest stand and human activities were the main factors conducive to the outbreak of Monochamus alternatus.Integrated control measures including timber quarantine,forest tending and structure adjustment,and traps should be adopted.