播期对大豆蚜及其天敌种群动态的影响-论文.pdf

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1、应用昆虫学报ChineseJournalofAppliedEntomology2014，51(2)：375—384．DOI：10．76790．issn．2095—1353．2014．044播期对大豆蚜及其天敌种群动态的影响水刘兴龙王克勤刘春来邵天玉王爽夏吉星杨帆刘宇李新民徐伟钧”(黑龙江省农业科学院植物保护研究所哈尔滨150086)摘要【目的】研究大豆播期对大豆蚜AphisglycinesMatsumura及其天敌的影响。【方法】试验在2012年、2013年进行，设置了3个大豆播期处理。每周调查播期处理田大豆蚜种群及天敌种类和数量，分析大豆蚜种群数量、种群增长率

2、的时序动态、大豆蚜和天敌的关联度。【结果】不同播期条件下大豆蚜有翅蚜及无翅蚜的种群动态趋势基本一致，有翅蚜蚜量高峰期要早于无翅蚜1周。处理间的大豆蚜田间始见期与终见期随着播期推后而延迟，大豆蚜在田间扩散和消退的时期也随着大豆播期延后。晚播的两个处理高峰期蚜量多于或等于正常播期处理的蚜量。大豆蚜与天敌关联度随着播期的推后而变高。在调查的7种天敌中大豆蚜与异色瓢虫的关联度最高，草蛉、小花蝽和蚜茧蜂也表现较高的关联度。【结论】播期会显著影响大豆蚜的田间始见期和终见期，随着播期的推迟大豆蚜种群高峰期蚜量以及大豆蚜与天敌的关联度都会提高。关键词大豆蚜，大豆播期，天敌，种群

3、动态，关联度EffectofplantingdateonthepopulationdynamicsofthesoybeanaphidanditsnaturalenemiesLIUXing—LongWANGKe．QinLIUChun．LaiSHAOTian—YuWANGShuangXIAJi—XingYANGFanLIUYuLIXin—MinXUWei—Jun(PlantProtectionInstitute，HeilongjiangAcademyofAgriculturalSciences，Harbin150086，China)Abstract[0bjectiv

4、es】Todeterminetheinfluenceofplantingdateonthepopulationdynamicsofthesoybeanaphid(AphisglycinesMatsumura)anditsnaturalenemies_[Methods】Soybeanswereplantedonthreediferentdatesandthenumbersofaphidandnaturalenemiesonsoybeanplantswererecordedweekly．ThepopulationdynamicsofapterateandalateA

5、．glycines，therateofincreaseandthecorrelationbetweennumbersofsoybcanaphidsandtheirnaturalenemieswereanalyzed．[Results】Therewasnodiferenceinthepopulationdynamicsofsoybcanaphidsbetweenthethreeplantingdatetreatments．Thepeakperiodforalateswasearlierthanthatforapterates．Theappearanceanddis

6、appearanceofaphidsonsoybeanplantswasdelayedbytheplantingdate，aswastheirgeneralspreadanddecline．Numbersofaphidsonplantswithadelayedplantingdatewasmorethan，orequalto，thatofthoseonplantswithanormalplantingdate．Thedegreeofcorrelationbetweenaphidsandnaturalenemiesincreasedwithplantingdate

7、．ThecorrelationwashighestbetweenaphidsandHarmoniaaxyridisandwasalsohighbetweenaphidsandOruissauteri，Chrysopaspp．，andAphidiidaespp．[Conclusion]Plantingdatehadastrongefectonwhenaphidsappearedanddisappearedfromsoybeanplants．Peakaphidnumbersandthecorelationbetweenaphidnumbersandthoseofth

8、eirnaturalen