金纹细蛾及其寄生蜂种群动态的模糊聚类分析.pdf

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1、河南农业科学，2015，44(7)：103—106JournalofHenanAgriculturalSciencesdoi：10．15933／j．cnki．1004-3268．2015．07．023金纹细蛾及其寄生蜂种群动态的模糊聚类分析刘欢(吴起县植保植检站，陕西吴起717600)摘要：金纹细蛾(LithocolletisringoniellaMatsumura)是我国苹果产区的重要潜叶害虫，为了利用寄m生蜂开展苹果园金纹细蛾的生物防治，调查了金纹细蛾及其寄生蜂发生的种群动态，并对两者种群动态进行了模糊聚类分析。结果表明：金纹细蛾对苹果的危害时间较长，始发生于6月初，

2、并持续危害到10月底；7月中旬至9月中旬是金纹细蛾发生高峰期，存在明显的世代重叠现象。寄生蜂始发期晚于金纹细蛾，7月和8月是寄生蜂的发生高峰期。10月后金纹细蛾幼虫和寄生蜂的发生量均逐渐下降。金纹细蛾种群的22次调查结果可以聚为6类，A=0．968；其寄m生蜂的调查结果聚为4类．A：0．982。聚类结果表明了苹果园中金纹细蛾及其寄生蜂种群动态随季节变化的差异，同时反映了金纹细蛾的种群消长与其寄生蜂的数量密切相关，寄生蜂是抑ⅢL制-苹暑果园金纹细蛾种群增长的主要因素之一。关键词：金纹细蛾；寄生蜂；种群动态；模糊聚类分析中图分类号：$436．611．2文献标志码：A文章编号：

3、1004—3268(2015)07—0103—04FuzzyClusterAnalysisofLithocolletisringoniellaMatsumuraandWItsParasiticWaspsinAppleOrchardAbstract：LithoeolletisringoniellaMatsumuraisoneoftheimportantleafminersinappleproductionareasinChina．InordertoutilizeparasiticenemyresourcesforL．ringoniellacontrol，basedonthe

4、principlesofecologyandbythemethodoffuzzyclustering，thisresearchstudiedthepopulationdynamicsofL．ringoniellaanditsparasiticwaspsinanappleorchard．ThetimeofL．ringonielladestroyingapplewasverylong，startinginearlyofJune，andsustainingharminendofOctober．DuringmiddleofJulytomiddleofSeptember，damag

5、eofL．ringoniellawasthemostseriousandgenerationoverlappingwasobvious．Ini—timperiodofparasiticwaspwaslaterthanthatofL．ringoniella．ThenumberofparasiticwaspwaslargeinJulyandAugust．AfterOctober，thenumberofL．ringoniellalarveandparasiticwaspgraduallydeclined．22investigationswereconductedonthepop

6、ulationdynamicsofL．ringoniellaanditsparasiticwaspsinYan’an，Shaanxiprovince．The22investigationresultsonpopulationofL．ringoniellacouldbeclusteredintosixclusters(A=0．968)．Theinvestigationresultsonpopulationofparasiticwaspcouldbeclusteredintofourclusters(A=0．982)．Theresultsoffuzzyclusteranaly

7、sisreflectedtheseasonaldifferencesofthepopulationofL．ringoniellaanditsparasiticwaspsinChineseappleorchard，andafollowingphenome．nonshownintheoccurrenceperiodanddensityofL．ringoniellaanditsparasiticwasps．Parasiticwaspswereoneofthemainfactorssuppressingpopulationgrowth