杨扇舟蛾生命表研究  

Life table of Clostera anachoreta (Fabricius)

作　　者：方松山 林晓安 申富勇 张康普 

机构地区：[1]许昌市林业技术推广站,河南许昌461000 [2]河南省森林病虫害防治检疫站,河南郑州450008

出　　处：《河南农业大学学报》2004年第1期59-63,72,共6页Journal of Henan Agricultural University

基　　金：河南省科委科技攻关项目(001020204)

摘　　要：杨扇舟蛾1年中第1代至第2代种群数量保持增加趋势;幼虫3龄期是影响下一代种群数量变动的关键虫期,也是防治的最佳时期;3龄幼虫期的捕食因子为关键因子,决定系数r2为0 5588捕食因子(b值)为0 4232.The population occurrence rate of the 1st and 2nd generation of Clostera anachoreta (Fabricius) has an increasing tendency in a year. The period of the 3nd instar larvae is the key stage affecting the population occurrence rate of the following generation and the best stage of controlling it. Being preyed during the period of the 3nd instar larvae is the key factor. The decision coffieient(r^2) is 0.558 8,the factor of predation (b) is 0.423 2.

关 键 词：杨树 杨扇舟蛾 生命表 种群数量 

分 类 号：S763.3[农业科学—森林保护学]