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(,510650),,,BiogasSystemandItsRolesinComplexAgro2ecosystem.XiaHanpingetal(SouthChinaInstituteofBotany,AcademiaSinica,GUANGZHOU510650):RuralEco2Environment,1996,12(4):47-50,60AbstractBiogassystemisthepivotinmaterialrecyclingandenergytransformationofacomplexagro2ecosystem.Ittakesagriculturalorganicwastematerialsasitsrawmaterialandproduceshighefficient,cleanandmulti2purposedfuel,forageandmanure.Theimportantrolesofbiogassystemintheprotectionofruraleco2environmentandintheimprovementofeco2agriculturedevelopmentaredescribedinthispaper.TheproblemsexistedinthedevelopmentofbiogastechnologyinChinahavebeenpointedoutandthecountermeasuresfordealingwiththoseproblemshavealsobeenputforword.Keywordsbiogas,anaerobicfermentation,agro2ecosystem,,,60%65%;,35%40%;,1%;,;(),(1988),::+++:++:+1111,,,2,,,1m31.25kW(1984),,1996-03-15,1996-07-161996,12(4):47-50,60RuralEco2Environment©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,28%25%20%,10,019,218,10%(1994),,,,1m31152m3,7d,99%,,,,,,1,(1994)1100dTable1Comparisonofqualityofappleswhichhavebeenstoredwithbagsandbiogasfor100days(%)(kgf/cm2)(g/kg)(%)66.23.86937.481.34.631185.668.03.67941.493.64.311060.8112,,,,5%34%(1994)(70kg),50kg,1,50%,77%140%,60%,37%,(1989),B,,,,,,10d,98%,,,,pHDOCOD,(1990),,,,,95%,92%,93%,99%(1991),,,,,,99%,94%,,,,(2)(1995)8412©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2Table2Effectsofdifferentseedsoakingtreatmentsontheyieldsofearly,andmiddle2seasonrice(%)(%)(g)(t/hm2)89.791.591.080.525.2425.365.677.6891.792.792.682.525.2825.695.798.0193.093.392.985.525.3325.876.028.25,,9915%,16313%,181125(1992),,hm222.5t,11125,,,,,,(3)(1994),,,3Table3Effectsofdifferentfertilizersonsoilsproperties(g/kg)(g/kg)(P2O5)(g/kg)(K2O)(g/kg)(g/cm3)(%)(g/kg)27.91.272.3525.31.2853.12.3636.71.794.2325.51.1358.61.732211,,,,,,,,212,19821993,6315%1418%,40%,,5000124%0133%01941135,1195(1994)43---,43087041576t,1153t,,1300m3,1t,5t,213,,,,944:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,,,,,,,;,,,,,,,;,,,,,,,,,,,,,380,,(1991),,,,,,,;,,;;,,,,,,:(1),,,(2),,,,(3),,(4),,,,,,,,,1989,.(1):11-14(60)0512©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1100mg/kg,DDT1100mg/kg(1986),013mg/kg,DDT015mg/kg,,,31331311,/517,/15122,32BHC,2BHC,/8149(1988),()9137;/414531312DDTDDTp,p2DDE,p,p2DDDp,p2DDT,o,p2DDTp,p2DDE,p,p2DDE114614p,p2DDE,,,,1987(DDT),7(6):44-49,1991(DDT),(4):63-65,1986,6(4):412-418,1988,25(1):81-87(50),1995,13(2):33-34,1994,12(2):42-44,1994,12(2):35-36,1991,9(1):38-39,1990,.(4):5-9,1994,12(3):38-39,1991:,96-98,1992,10(1):44-46,1988:,296-299,1984:,3-7,1994,2(5):56-610612©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.