異型眼蕈蚊在西洋參上的為害特性及其防治方法.pdf

1、中國農(nóng)業(yè)大學(xué)碩士學(xué)位論文異型眼蕈蚊在西洋參上的為害特性及其防治方法姓名：馮春光申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)昆蟲與害蟲防治指導(dǎo)教師：秦玉川20030401AbstractPnyxiascabiei(hopk)(CitersNematoeeraSciaridae)whichcancauseseriousdamagetoAmericanginsengwasfirstobservedinBeijingsuburbInordertoworkout

2、aneffectivecontrolmethodsomebiologicalcharacteristicsofthisinsectpestwasstudiedThemainresultswereasfollows：1TheeffectiveaccumulatedtemperatureofPscabieifromeggtopupawas2062daydegree；thedevelopmentzeroofeggs，larvaeandpupa

3、ewas514105“C，381O95“Cand721O53“Crespectively；itwasestimatedtohave9generationsinayearinBeijingTheadults’populationdynamicsshowedtherewere2peaksinone”aLonewasintheendofJunetoearlyJulyandtheotherinearlySeptThemaindamagestag

4、ewaslarvaewhichcouldfeedandborethetissueofginsengrootAdultspreferredweaklightandtheycouldmateinashontimeafteremergencefrompupae，F(xiàn)emalecouldapproximatelylay4060eggsontheinjuredtissueofginsengrootorinthesoilnearby2Larvaeco

5、uldnotdirectlyfeedandinjurethehealthyginsengtissue，butiftheepidermisoftheginsengrootswereinjuredbymechanical，insectpestsorpathogenstheycouldsecondlycauseseriousdamageIthadbeendemonstratedthatamixinjuryfromCylindrocarpond

6、estructuns(afungy)andPscabieicouldcausemoredamagethantheirsingleinjurytothetissueofginsengroot3Therewasanotablerelationshipbetweensoilnutrient，especiallytheorganicmatterandthedamagedegreeofPscabieiThemoreofthesoilorganic

7、matterthelighteroftheginsengrootsweredamaged4TheolfactoryresponseoftheadultsofPscabieitoattractantsextractedfromsevenplantsWaSstudieResultsshowedthattheadultsmostlikelytendedtoextractivefromginseng，followedbymushroom，car

8、rotandpotatoOnthecontrarytheyevadedtheothertwoextractivesfromcucumberandgarlicThelarvaeofPscabieihavestrongabilityoffindinghost5ThecontrolstrategytoPscabieiWasalsostudiedAgriculturalcontrol，suchasapplyingorganicfertilize

9、rrotation，ploughintime，shouldputonthebaseofalltheothercontrolsTwoeffectivebiopesticidesforthe尸scabieicontrolhadbeenscreenedout，theywereAbmectinandMatrineKeywords：Pnyxiascabiei(hopk)，damagecharacteristic，Americanginseng，c