稻-鴨復(fù)合系統(tǒng)土壤中甲烷細(xì)菌數(shù)量及其活性研究.pdf

1、湖南農(nóng)業(yè)大學(xué)碩士學(xué)位論文稻鴨復(fù)合系統(tǒng)土壤中甲烷細(xì)菌數(shù)量及其活性研究姓名：鄧曉申請學(xué)位級別：碩士專業(yè)：農(nóng)藥學(xué)指導(dǎo)教師：廖曉蘭2003.6.1StudiesontheAmountsandActivityofMethanogensintheSoilofRice—DuckComplexEcosystemAbstractThestudyadoptedthetechnologyofanaerobicculturecasetechnique，MPN(

2、mostprobablenumber)androlltubemethods，andgaschromatographytosurveythearnourlt$ofmethanogensinsoilofrice—duckcomplexecosysternof聃，etlandtheinfiuenceofmethamidophosandacetochlorontheamou_rltsandactivityoFmethanogensinsoilo

3、fthissystem，theresidualquantityofmethamidophosinsoilofriceduckcomplexecosystemofwetland，andthesegregationandcultivatecharacteristicofdominantmethanogensinpaddyfieldsItaimedataffordingscientificbasisforC00rdinatingtheconf

4、lictbetweenriceproductionande；wironmentalprotection，andsearchingforidealmeasllretomitigatemethaneemissionandachieveagriculturalsustainabledevelopmentMainresultsforthisstudyareasfollows：1Thestudyontheamountsofmethanogensi

5、nthesoilofriceduckcomplexecosystemofwetlandThereis110rel：)ofti11thisrespectsofarTheresultsindicated：Theseasonalchangepatternoftheamoursofmethanogensinthesoilofrice—duckcomplexecosystemofwetlandandCK(ordinarysystem)wascon

6、sistentwiththatofmethaneemissionlawofpaddyfieldsTheamountswerethegreatestatactivetilleringstageandbootingstageforearlyrice，andtheanlolIntswerethegreatestatactivetilleringstageforlatericeRiceduckcomplexplantingandbreeding

7、pattemgreatlydecreasedtheamountsofpaddyfields，especiallydecreasedtheamountsofmethanogensduringmethaneemissionpeakperiodTheamountsofthainthesoilofearlyriceandlatericeweredecreased20％～969％and943％958％bytheMPNmethodtheamourl

8、tSofthatweredecreased333％981％forearlyricebytherolltubemethodItcorffirmedthattheamountofmethanogenswastheon@ofmainfactorsofamountofme血aneemissioninpaddyfields2，Thestudyonthesegregationandcharacterizationofdominarttmethano

9、gensinpaddyfields，Theresultshowed：FourstrainswhichweredominantwereisolatedfromthesollofearlyriceattheexperimentfarminChangshaCountyofHunanProvincebyanaerobicculturecaseandrolltubemethod，andwerenamedstrain201，202，203and20