捕食性天敌对禾缢管蚜和麦长管蚜存活率的影响  

Effects of some predatory natural enemies on survival rate of bird-cherry aphid and grain aphid

作　　者：印毅[1] 杨益众[1] 余月书[1] 

机构地区：[1]扬州大学农学院,江苏扬州225009

出　　处：《扬州大学学报（农业与生命科学版）》2005年第2期79-82,共4页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：江苏省"十五"科技攻关项目(BE2001340)

摘　　要：应用二次正交回归旋转组合设计方法,研究麦田生态系统中主要捕食性天敌龟纹瓢虫[Propyleajaponila(Thumberg)]成虫、异色瓢虫[Leisaxyridis(Pallas)]成虫、大灰食蚜蝇(SyrphuscorollaeFabricius)幼虫与禾缢管蚜[Rhopalosiphumpadi(Thumberg)]、麦长管蚜(SitobionavenaeKirby)共存条件下天敌对麦蚜的控制作用,从而建立天敌麦蚜捕食模型。该模型可反映麦蚜存活率与各参试因子之间的数量关系,不存在失拟因素。模型主效应分析表明:影响禾缢管蚜存活率的因子由大到小排序为异色瓢虫、自身密度、龟纹瓢虫、大灰食蚜蝇;影响麦长管蚜存活率的因子由大到小排序为异色瓢虫、龟纹瓢虫、自身密度、大灰食蚜蝇。分析了天敌之间的相互作用及其对两种麦蚜的存活影响,初步建立了天敌控制麦蚜的最佳密度组合。<Abstrcat> The mathematical prey-model was established by using the method of rotational composite design of square orthogonal regression in the coexistent system of three kinds of natural enemies (Propylea japonila, Leis axyridis, Syrphus corollae) and two aphids (Rhopalosiphum padi, Sitobion avenae). The research results showed that the model may indicate the relationship between the survival rates of aphid and its natural enemies. By a major factors analysis, the results showed that the capability of influence on bird-cherry aphid survival rates was the order of L.axyridis>itself density>P.japonila>S.corollae; To grain aphid, the order was L.axyridis>P.japonila>itself density>S.corollae. Meanwhile, the mutual influence between two natural enemies and their effect on survival rates was analyzed, the optimal proportion of the three predators in the multi-predators systems was established preliminarily.

关 键 词：捕食性天敌 麦长管蚜 禾缢管蚜 存活率 大灰食蚜蝇 龟纹瓢虫 麦田生态系统 异色瓢虫 自身密度 设计方法 旋转组合 正交回归 控制作用 捕食模型 数量关系 相互作用 最佳密度 天敌控制 麦蚜 因子 分析表 主效应 成虫 排序 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治] S435.122.2[农业科学—植物保护]