德昌松毛虫生物生态学特性  

Bio-ecological characteristics of Dendrolimus punctatus tehchangensis in Yunnan Province

作　　者：柴守权[1] 许国莲[2] 谢开立[2] 赵培仙 冯永刚 李品军 

机构地区：[1]国家林业局森林病虫害防治总站,辽宁沈阳110034 [2]西南林学院保护生物学学院,云南昆明650224 [3]云南省元谋县森林病虫害防治站,云南元谋651300

出　　处：《浙江林学院学报》2002年第3期277-281,共5页Journal of Zhejiang Forestry College

基　　金：云南省应用基础研究重点基金项目 (98C0 0 7Z)

摘　　要：研究了德昌松毛虫的生物学特性及其发生与林分因子的相关性。结果表明 :德昌松毛虫在元谋县 1a发生 2代 ,以 3龄和 4龄幼虫越冬。幼虫和蛹的空间分布为聚集分布 ,当λ >2时 ,聚集是由昆虫的自身行为引起的 ,当λ <2时 ,聚集是由环境条件引起的。通过逐步回归分析 ,筛选出了影响德昌松毛虫发生的 4个关键因子 :坡向、林分结构、主层林郁闭度和林木生长势。总结出了虫源地林分和有虫不成灾林分的特征。表 5参 1This article researched preliminarily the biological characteristics and relationship between forest factors and occurrence of D.punctatus tehchangensis .The results show that D.punctatus tehchangensis has two generation one year in Yuanmu County and spends its winter by the third and fourth stadia larave.The spatial distribution patterns of larvae and pupae are congregating distribution,and λ>2,congregation is caused by the intrinsic behavior of insect;λ<2,congregation is caused by the environment.By using the stepwise regression method,direction of slope,forest structure,crown density,potential of growth are selected out as the four key factors which have affected occurrence of D. punctatus tehchangensis .The characteristics of the pest resource stand and the stand with pests but without disaster have been summarized.

关 键 词：德昌松毛虫 生物生态学特性 空间分布型 林分因子 回归分析 元谋县 云南 

分 类 号：S763.421[农业科学—森林保护学]