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1、中國(guó)農(nóng)業(yè)大學(xué)碩士學(xué)位論文有機(jī)桃園主要害蟲(chóng)和天敵種群動(dòng)態(tài)及其害蟲(chóng)防治的初步研究姓名:李志朋申請(qǐng)學(xué)位級(jí)別:碩士專(zhuān)業(yè):農(nóng)業(yè)昆蟲(chóng)與害蟲(chóng)防治指導(dǎo)教師:杜相革20050601AbstractInthisexperiment,theauthorinvestigatedthemainpestsandnaturalenemiesintheorganicpeachorchardandtheconventionalpeachorchard,inPinggur
2、egionofBeijingTheauthorstudiedthepopulationdynamicsofthethreemainpests(GrapholithamolestaBusck,AdoxophyesoranaFischeryonRoslerstammandLyonetiac膪rkellaLinnaeus)andthefivemainnaturalenemies(Propylaeajaponica(Thunbery),Leis
3、axyridisPallas,Coccinellaseptempunctta,OriusandChrysopidae)withecologicalmethod,andcomparativelystudiedthepopulationdynamicsandamountofthemainpestsandtheirnaturalenemiesintheorganicpeachorchardandtheconventionalpeachorch
4、ard,theinfluencesoftheorganicmanagementOBthepopulationofthemainpestsandtheirnaturalenemieswerediscussed,Theauthoralsostudiedtheeffectofsomepesticidesfortheseverepest(LyonetiaclerkellaLinnaeus),andselectedsomegoodpesticid
5、esTheresultsofthisexperimentmayprovidesometheoreticalandpracticalbasesfortheintegratedpestmanagementinorganicpeachorchardThemainresultswereasfollows:1)Therewere4generationsofGmolesta,3generationsofAorana,and6genermionsof
6、LclerkellaayearintheorganicpeachorchardForthemainnaturalenemies,thehighestpopulationdensitywasOr/us,thefollowingwerePjaponica,Laxyridis,CseptempuncttaandChrysopidaeThepopulationdensityofPjaponicaand三axyridiswasmorethanth
7、eothersduringtheearlystages,butduringthelatestages,thepopulationdensitytheOriuswasmost;∞ThepopulationdynamicsofthepestandnaturalenemiesindifferentplotswereconsistentThepopulationdensityofthepestsintheorganicmanagementpea
8、chorchardwaslowerthanthatoftheconventionalmanagementpeachorchardIntheorganicmanagementpeachorchard,thepestpopulationdensityintheareawherethegroundcoverfalfalfa)wasgrownwaslowerthanthatwithoutthemulchingmaterialandthepest
9、populationdensityinthecentralareaofthepeachorchardwaslowerthanthatintheperipheryInorganicmanagementpeachorchardthepopulationdensityofnaturalenemiesinlheperipherywashigherduringtheearlierstages,butdudngthelateandmiddlesta
10、gesthepopulationdensityofnaturalenemiesinthecentralareawashigheLandthelivingofthenaturalenemiesinthecentralareawerelongerthantheotherarea;3)TheeffectsofNaturalPyrethrumforLclerkellawosthebest,andtheeffectofthecompounding
11、of1500times’NmuralPyrethrumand300times’bamboovinegarwitsthebestcomparedwiththeotherinsecticides,thedensityreduceratesofthethatincreasedcontinuallyandreachedthepeakvalue(732腳afterl5daysTheeffectofpotashsoaptooksecondplace
12、。thereduceratesof300times’potashsoapreachedthepeakvalue(632%)after15daysBamboovinegar,potashsoapandsuspendingagentofsulfurcouldincreasetheeffectofNaturalPyrethrum,BaicaoIandKingbofor上clerkellaWesuggestedyouuseNaturalPyre
13、thrum(thecompoundingof1500times’NaturalPyrethrumand300times’bamboovinegar)or300times’potashsoaptocontrolLyonetiaclerkellaLimxaeusinorganicmanagementpeachorchardKeywords:Organicpeach;Organicmanagement;Populationdynamic;IP
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