篩豆龜蝽發(fā)生規(guī)律及有機(jī)毛豆生產(chǎn)關(guān)鍵技術(shù).pdf

1、中國農(nóng)業(yè)大學(xué)碩士學(xué)位論文篩豆龜蝽發(fā)生規(guī)律及有機(jī)毛豆生產(chǎn)關(guān)鍵技術(shù)姓名：張友廷申請學(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：杜相革20030501AbstractMegacoptacribrariaisthemainpestonsoybeaninJiangnanareaItmakesworstinfluencethequantityandqualityofgreensoybeanproductBiologicalfeaturesand

2、occurrencerhythmofthispestwereresearchtogetitsweaknessinthisexperimentAccordingtotheprinciplesoftheorganicagriculturereproduction，weusedagriculturalcontrol，biologicalcontrolandremedycontroltopreventthepestanddecreasethee

3、conomiclossThedistributionofeggoftheMcribrariawasobservedBymarkingtheeggsofMcribrariainorganicsoybcanfieldrespectivelythecontroleffectoftheeggparasitoidsonMcribrariawasinvestigatedin2002inJiangsuTheresultsindicated：(1)Mc

4、ribrariaoccur3generationsinNanjingareaJiangsuProvinceeveryyearTheadultscongregatedtooverwinterinlittlehill’slaps，wherewereleewardandexposedtothesunTheyfeedonleguminousplantsinwinterandimmigratetothesoybeanfieldsinspringM

5、cribrariadomoreharmtosoybeaninautumnthaninspringTherarerawayfromtheoverwinteringlocationthedamagecausedbyMcribrariawaslessTheearlierthesoybeanwasplanted；thepestaroseearlierandcausedmoredamage(2)Severalmethods，namelyfrequ

6、encydistributionanalysis，etcTestofaggregationindicesandwereadoptedforthestudyofspatialpattemsTheresulBindicatedthatmostsetsofsamplesagreedwiththenegativebinomialmodelThemoredensityofthepest’spopulationitscollectionismore

7、aggregated(3)ThenumberofMcribrariacouldbereducedinacertaindegreebyincreasingthedistanceamongrOWSanddecreasingthedistanceamongplantsinarowslowingdowntheplant’shuddle，usingcompoundfertilizerandaddingextramanure，irradiating

8、weed，protectingnaturalenemiesandcapturingtheoverwinteredadults(4)ThefemaleMcribrariabegantoovipositinearlyMayandlaideggsvigorouslyfrommidMayloearlyJuneandthensuccessivelyenteredthedecliningstageofovipostion，804％oftheMcri

9、brariawerelaidinthepeakperiodofoviposionTwoeggparasitoidsthatOoencyrtusspandTrissolcusspwereobtainedintheorganicsoybearlfieldOoencyrtusspwasthedominantspeciesItwBsshowedthattheeggparasitoidsplayedaveryimportantroleinredu

10、cingthepestpopulationinsoybeanfieldThecommunitieswerepositivelyrelatedtothenumberoftheMcribrariaTherateofeggsofthefirstgenerationparasitizedbyeggparasitoidsattainedto6136％Theeggparasitoidemergenceintensivelyintheearlygro

11、utingperiodofthesoybeanforaboutaweekandthisholds8133％inthewholeemergenceperiod(5)Botanicalpesticides(036％matrine)wasusedtocontroleggandnymphindifferentperiodofMcribraria，investigatedtheparasiticalrateofegginorganicsoybea

12、nfieldsTheresultsshowedthathatchperiodofeggsoreggblockwasdelayed，thedeathratesofyoungestnymph，1～3instars，4instars，5instarsnymphwas100％，8731％，5339％and554％，respectively’aftermatrinewasusedfor24hourSSoyoungernymphperiodisfe

13、asibletimeforcontrolMcribrariawithbotanicalpesticides，as036％matrineThereisnoeffectontheemergenceoftbeeggparasitoidsanditsadultsafterspringthispesticideKeywordsorganicagriculture，Megacoptacribraria，rhythmsofoccurrence，egg