不同硝化抑制剂的复配施用对尿素转化及土壤中氮的影响傅丽

2009-01-292010-04-14“”2009BADB3B071983-。*[e-mail]024-839708181,21*211100162.110866。NH4+-NNO3--N。1--35-CMP4-124-ATC、DCDCMPDCD35.6%。。S145.9A0564-3945(2011)-04-0923-03Vol.42,No.4Aug.,2011ChineseJournalofSoilScience42420118[1][2,3]。[4,5]。。11.1。20~30cm20mm。1。gkg-1TotalN0.89gkg-1OM15.0mgkg-1AvailableN31.4gkg-1TotalP0.62mgkg-1AvailP11.4mgkg-1AvailK82.0pH5.881Table1ThebasicpropertiesoftestedBrownearthN∶P2O5∶K2O=2∶1∶1[6]。NBPT3DCD)、CMP1--35-、ATC[7,8]4-124-。1.20.4%。N∶P2O5∶K2O=2∶1∶1。[9]NBPT0.05%DCD、CMP、ATC0.3%、0.05%0.1%。64。CodesofTreatmentCK+NBPTCK+NBPT+DCDCK+NBPT+CMPCK+NBPT+ATCCK+NBPT+DCD+CMPCK+NBPT+DCD+ATCFertilizerN∶P2O5∶K2O2∶1∶1Theweightofureainhibitor%0.050.050.050.050.050.05DCDTheweightofureainhibitorDCD%-0.3--0.30.3CMPTheweightofureainhibitorCMP%--0.05-0.05-ATCTheweightofureainhibitorATC%---0.1-0.12Table2DesigninexperimentDOI:10.19336/j.cnki.trtb.2011.04.02742、、、。20cm15cm[10]。135810152030456080100120d、。1.3MgO-。。1.4DPS、EXCEL[11,12]。=A-B／A×100ANBPTNO3-NBNO3N。22.1NO3--N1。8d45d1350.46mgkg-1120d。2.2[13]NH4+-NNO2-NNO2-NNO3--NNH4+-NNO3--N[4,5]。NO3--N。NO3--N28dNO3--N。NBPTNO3--N45d。NBPT120NO3--N1420.6mgkg-1DCD、CMP、ATC420.4mgkg-1、754.8mgkg-1580.42mgkg-1。3CMP0.05%ATC。230dCMP45dNO3--NCMP1521.7mgkg-1ATC1438.62mgkg-1。45dCMP45.6%ATC41.3%DCD38.6%。ATC60d35%45d41.3%CMP4.3。2.3CMPDCD50.8%。DCDATC。(3)CMPATCNO3-N18.7mgkg-1。CMPATCCMP、ATC、DCDNO3-N44.6mgkg-1、71.3mgkg-1、87.4mgkg-1。CMPNO3-NATCCMP。DCDCMPATC60CMP1NO3--NFig.1SoilNO3--NinBlanktreatments2NO3--NFig.2SoilNO3--Ninnitrificationtreatments9244：DCDCMPDCD[14]。3NO3--NCKCMPATC、DCDNO3--N。CMPCMP。。[1],.[M].:,2001.[2],,,.[J].,2003,36(12):1456-1461.[3].[J].3,2000,9(1):1-6.[4],,,.DL-1[J].,2006,(17)2:201-208.[5],.[J].,1998,4(3):219-223.[6].[M].:,1999.[7],,,.[J].,2005,11(4):481-486.[8]PENGSB,HUANGJL,ZHONGXH,etal.Challengeandoppor-tunityinimprovingfertilizerinitrogenuseefficiencyofirrigatedriceinChina[J].Agric.Sci.inChina,2002,1(7):776-785.[9],,,.[J].,2004,15(6):983-987.[10],,,.NBPTDMPP[J].,2008,(39)4:896-899.[11],,,.[J].,2004,10(3):286-291.[12]ZERULLAW,BARTHT,DRESSELJ,etal.3,4-Dimethlypyrazolephosphate(DMPP)-anewnitrificationinhibitorforagricultureandhorticulture[J].BiologyandFertilityofSoils,2001,34:79-84.[13]TRENKELME.Controlled-releaseandstabilizedfertilizersina-gricul2ture[M].Paris:TheInternationalFertilizerIndustryAssocia-tion,1997.[14],,,.DMPP[J].,2005,11(1):137-139.3NO3--NFig.3SoilNO3--NinnitrificationtreatmentsNitrificationInhibitoronUrea-nitrogenTransformationandtheImpactofSoilFULi1,2,SHIYuan-liang1*,SUZhuang2,WANGLing-li1(1.ChineseAcademyofScienceInstituteofAppliedEcology,Shenyang110016,China;2.GraduateSchoolofShenyangAgriculturalUniversity,Shenyang110866,China.)Abstract:UreaseinhibitorsandnitrificationinhibitorsareusedforslowingthehydrolysisofureaandammoniumnitrogenofsoiltoselltheconversionofN.Inthisexperiment,brownearthwasusedasasubstrate,inthesameamountofureaseinhibitor,undersimulatedfieldcultivationexperimentsconductedoutdoors.TheresultsshowedthattheapplicationofnitrificationinhibitorssignificantlyinhibitedtheNH4+-NtoNO3--NconversionofCMPwiththenitrificationinhibitorDCDfertilizereffectmostsignificantly.FollowedbynitrificationinhibitorCMPwithsignificantinhibitionrateof35.6%;ATChereshowednosignificanteffect,buttherewerealsosomeinhibitoryeffect.Keywords:InhibitorUreaNitrogentransformation925