重庆松墨天牛发生规律研究  

Occurrence regularity of Monochamus alternatus in Chongqing

作　　者：杨洪[1,2] 王进军[2] 赵志模[2] 杨德敏 唐志强 

机构地区：[1]贵州大学昆虫研究所贵州山地农业病虫害重点实验室,贵州贵阳550025 [2]西南大学植物保护学院,昆虫学及害虫控制工程重点实验室,重庆400716 [3]重庆市森林病虫害防治检疫站,重庆400716

出　　处：《中国森林病虫》2010年第2期15-17,43,共4页Forest Pest and Disease

基　　金：国家重点基础研究发展计划项目(2002CB111400);教育部新世纪优秀人才支持计划项目(NCET-04-0854);重庆市自然科学基金资助项目

摘　　要：松墨天牛Monochamus alternatus Hope在重庆1a发生1代，主要以3～4龄幼虫在受害马尾松木质部的蛀道内越冬。4月下旬成虫开始羽化。11月初幼虫开始越冬。各地区因海拔和特殊地理环境的不同，成虫羽化时间稍有差异。松脂掩埋和寄生是导致卵不孵化的主要原因。幼虫蛀入前是死亡率最高的阶段（达到48．6％）。种群趋势指数I=18239．13／1214=15．02。通过对重庆地区松墨天牛发生规律的研究，以期对有效控制松墨天牛的发生危害和松材线虫病在西南地区的传播蔓延提供一定的理论指导。M. alternatus occurred one generation a year in Chongqing and overwintered mainly as 3-4 instar larvae in the tunnel in xylem. The adult emerged in late April. In the first ten days of November, the larva began to overwinter. The emergence date of adults was different because of different altitudes and special environment. Rosin embedding and parasitism were the main reasons for unhatched eggs. Top mortality（48.6% ） of larvae occurred before they fed xylem. In xylem,the risk of being preyed was quite low. Trend index of population I = 18 239.13/1 214 = 15.02. The study provided some theoretical instruction on the control of M. alternatus and the epidemic of B. xylophilus in southwest of China.

关 键 词：重庆 松墨天牛 发生规律 种群趋势指数 

分 类 号：S763.38[农业科学—森林保护学]