南寧市無公害蔬菜害蟲和天敵群落結(jié)構(gòu)及其動態(tài)研究.pdf

1、廣西大學(xué)碩士學(xué)位論文南寧市無公害蔬菜害蟲和天敵群落結(jié)構(gòu)及其動態(tài)研究姓名：王衛(wèi)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：張永強19990501STUDIES0NCOMMUNlTYSTRUCTUREANDDYNAMICoFPESTAND_NATUREENEMYoFPOLLUTIoNFREEVEGETABLEINNANNINGAbstractn矗u地o嗡Thevegetablecommunityofpest、一n目鼬insect、

2、NeutraIinsectandspiderconsistedof15orders152families349speciesThedecreasingorderofeachsubcommunity’srichnesswas：pest(121)neutralinsect(68)spider(6勃predaceousinsect(6j)parasiticinsect(3，)，whilethatofthenumericalpercentage

3、was：pest(797％)neutralinsect(87％)spider(67％)predaceousinsect(31％)parasiticinsect(17％)，Thephytophagousinsects：HypogastruracommunisFolson、PlutelaXytostellaL、PhyllotretastriolalaFabricius、LiremyzasaliuaeBlanchard、Myzuspersic

4、ae(sulzer)、Lipaphiserysirni(Kaltenbach)，parasiticinsect：Apantelesplutollae，predators：PaederusfuscipesCurtis、Propylea／aponica、ColeosomaOctomacularum、Ummeliatainsecticeps、印盯igonefradeorom(Berland)、Erigonidiumgraminicolum(S

5、undvall)andtheneutralinsects：ChironomidaeetcwerethemaincomponentsofcommunityThepaperanalyzedthetimestructure、numericaldynamicandspeciesdiversitvofeachsubcommunityaswellasthepredators’naturalCOlItroIfunctiontothepestmpoll

6、ution—freevegetablefieldofFuDeandgeneralmanagementfieldofXiuXiangTheseasonalregulationsofcommunitystructureandnumericaldynamicandtheeffeCtoi’richness、evennessanddominantconcentrationuponthespeciesdiversity’Sfluctuationwe

7、rerevealedinthispaperThedecreasingorderofspeciesdiversitiesofcruciferaexegetable‘SfivesubcommunityinFuDewasassameasthatinXiuXiangtheiraverage(FuDe：XiuXiang)couldrangeasfollowing：spider(154：151)pest(133：127)neutralinsect(

8、113：124)parasiticinsect(115：1O)predaceousinsect(1，12：096)ThethesisalsoanalyzedthecharactersofcommunitystructureofweedfieldalongtheditchinvegetablefieldTheresultsshowedthattheweedfieldhadgreatsignificancefoz’thestabilizat

9、ionofpredators’communitystructureandthevegetablepest—cnntr01becauseithadlargecapacityforspeciesandworkedasabridgebywhichmanypredatorsofpestcallinhabitandtransferKeywords：pollution—freevegetable、communitystructure、weedbes