生物制劑—光合細(xì)菌（PSB）對中小型水庫生態(tài)作用的研究.pdf

1、分類號：$959密級：吃婊耀案巖孽碩士學(xué)位論文Y932390單位代碼：10193學(xué)號：2003177生物制劑一光合細(xì)菌(PSB)對中小型水庫生態(tài)作用的研究StudyOnEffectofMicroorganismmPhotosyntheticBacteria(PSB)OnEcologicalEnvironmentofSmallandMiddlingReservoirs究吉林農(nóng)業(yè)大學(xué)二oo六年五月教名方學(xué)導(dǎo)業(yè)究在研指專研所StudyOnEf

2、fectofMicroorganismPhotosyntheticBacteria(PSB)OnEcologicalEnvironmentofSmallandMiddfingReservoirsAbstractSixreservoirsi13theJilinProvinceforwerechosenforthisexperimentthreeofthemwascontrolgroupeIntheexperimentalcondition

3、weisolated、enrichedandculturedthephotosynthctiehacteria(PSB)AfterreproducingthePSB、析ththewaterofwellWesprnikedthePSBtotheexperimentalreservoirs，thenweconductedtheexperimenttoinvestigatethehydrochemistryindex、planktonbiom

4、ass、thegrawfhofsilverfishandbigheadsilverfishinthereservoirsTheresults：1)PSBhadobviouseffectonhydrochemistryindexofthereservoirsSD、sulfide、nitrateNandCODoftheexperimentalgrouparclowerthanthoseofcontrolgroupaftersprhlking

5、PSBTheindexesdecreasedgeaflyintheexperimentalgroupbutdidnotchangeveryobviouslyinthecontrolgroupHowevertheCODintheexperimentalreservoirsdidnotreducedgreatlyandhadnosignificantdifferencewiththatofcontrolgroupOntheotherhand

6、，DO、ALK、THindieexperimentalreservoirsarehi【gIleFthanthoseofcontrolgroupandchangedobviouslybutthesameindexofexperimentalgroupchangedatdifferentdegreeThismayberesultsofPSBinthedifferentconditionofreservoirTheresultssuggest

7、thatPSBcallkeepwaterqualitywell2)PSBCalleffecttheplanktonbiomassinthereservoirsmephytoplanktonofexperimentalgroupincreasednotablyafterapplicationPSBItalsocanmakethealgaesunfitableforfishdecreaseOntheotherhand，thezooplank

8、tonbiomassishigherthanthatofthecontrolgroup3)PSBCalleffectthegro州hofsilverfishandbigheadsilverfishtheweightgaininadayandsurvivingpercentageoffishinthecontrolgroupchangedlittlelyButthetwoindexesintheexperimentalgroupincre

9、asedatsomedegreeThereasonmaybethatPSBchangethewaterqualitywellandincreasetheplanktonwhichprovidedthefishgoodenvironmentandenol：IghfoodTosnmup，weconductedtheeffectofPSBonhydrochemicalindex、plankton、growthofsilverfishandbi