测定松墨天牛林间虫口密度的简易方法及其运用  

A Simple Method and Its Application for Measuring the Field Population Density of Monochamus alternatus

作　　者：徐正会[1] 姜海波[1] 褚姣娇[1] 段艳[1] 王玲[1] 

机构地区：[1]西南林学院云南省森林灾害预警与控制重点实验室,云南昆明650224

出　　处：《西南林学院学报》2010年第5期58-64,共7页Journal of Southwest Forestry College

基　　金：云南省科技攻关项目(2005NG03)资助;云南省重点学科森林保护学(XKZ200905)资助

摘　　要：根据云南省林区松墨天牛生物学特性,提出一种简单易行的林间虫口密度测定方法,并运用于2007—2008年世代虫口密度的测定。从全省6个观测点的测定数据看,松墨天牛的世代死亡率和单株受害木平均虫口密度与6个观测点的年活动积温(≥10℃积温)呈正相关关系;结果还显示,松墨天牛在南部林区倾向于高死亡率繁殖策略,而在北部林区则倾向于低死亡率繁殖策略。测定结果较好地反映了云南省林区松墨天牛的林间虫口密度、阶段死亡率及世代死亡率。该方法适用于松墨天牛林间种群动态监测、防治决策及防治效果检验3方面。测定林间虫口密度的最佳时间是每年8—9月。Based on the biological characters of Monochamus alternatus in the forest area of Yunnan Province,a simple and practical method for measuring field population density of M.alternatus was proposed and applied to the measurement of M.alternatus field population density in the 2007—2008 generation.According to the determination data of the 6 observation plots in Yunnan Province,the generation mortality and average population density of M.alternatus pest per single damaged pine tree was positively related to active temperature（≥10°C） accumulation of each site.The results also showed that M.alternatus tended to take a reproductive tactics with high mortality in the warmer southern forest area,whereas a reproductive tactics with low mortality in the cooler northern forest area.The measurement results pretty well reflected the field population density,periodical mortality and generation mortality of the pest in the forest areas of Yunnan Province.It was proposed that this method could be applied to monitoring the field population dynamics,decision making for control strategy,and to testing the control effect of M.alternatus.The best time to measure the field population density of M.alternatus in Yunnan Province was from August to September of each year.

关 键 词：松墨天牛 林间虫口密度 测定方法 测定时间 防治决策 

分 类 号：S763.712.4[农业科学—森林保护学] S763.38[农业科学—林学]