肠杆菌(Enterobactersp.M5)-生物炭复合材料对水稻镉、砷积累的影响

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中图分类号：S511；X53 文献标志码：A 文章编号：1672-2043（2025）07-1697-13

doi：10.11654/jaes.2024-0729

Effectsof Enterobactersp.M5-biocharcompositematerialoncadmiumandarsenicaccumulationinrice

LI Nan1，2，3 ，LIU Yuling1，4 ，ZHANG Puxin1，2，3，YAOJunfan1，2.3，YINXuefei4，TIE Boqing1，2，3* （1.CollegeofEnvironentandEcologyHunanAgricultralUniversityChangsha408China;2.HunanEngerng&cholg ResearchCenterforIrigationWaterPurification，Changsha410128，China;3.KeyLaboratoryofSouthernFarmlandPolutionPrevention andControl，inistryofAgriculture，Changsha4028，hina;4.HunancadmyofAgriculturalSiences，Istituteoficulral Environment and Ecology of Hunan Province，Changsha 41O125，China）

Abstract：ThisstudywsdesignedtoinvestigatetheimpactoftheEnterobactersp.M5-biocharcompositematerialoncadmium（Cd）and arsenic（As）acculationinice.Wetablishedsixtreatmentsusingapotexperimentmetod，inludingEnterobactersp.，ioar andEnterobctersp.hapiteaterial：tro）terbcte（coutlh）ct shellbiocha）terocteotselsiteeal）dobegic biocharcompositematerial（MBM5）.TheresultsshowedthatthesingleandcombiedaplicationsofEnterobactersp.M5andbiochar couldreducedCdandsocentratioofricegais.TheM5，，B，andMBM5treatmentsresultediecontaiedevelsofCdand inorganicarsenicIAs）thatcoplwithtioalfoodsafetystadards.ComparedtotetreatmentswithingleaplicatioofEteobcter sp.M5adihanterobctersp.ocaromositeateralreoretiveinucigtCdndAstetsinowic huskandvariouspartsoftheplant，amongwhich MBM5treatmenthasthebestefectonreducingthecontentsofCdandAsinrice， resulting in reductions Cd content in early and late rice grains by 25.49% and 74.00% ，respectively，and decreases in As content by （2 39.83% and 30.95% ，respectively.The BM5and MBM5 treatments significantly increasedthe contents ofCd，As，SandFe inroot surface iron plaque，among which the contents of Cd，As，S and Fe in MBM5 treatment were increased by 171.82% ，139.94 % ， 72.52% and 140.20% ，respectively.TheB，MB，BM5，andMBM5treatmentssignificantlyreduced thecontentsofavailableCdandAsinhizospere andnon-hizospheresoil.Enterobactersp.M-iocharcompositemateraltreatmentimproveteaundanceanddiversityofteicobial communitywitteelativebudaceofteEnterobcergesieasingy999nd726isinteB5，ndtrts respectively.ResearchindicatethattheaplicationofMBM5wasanefectivemethodtosimultaneouslyreducetheabsorptionand accumulation of Cd and As in rice.

Keywords：cadmium（Cd）;arsenic（As）; rice; sulfate reduction; magnetic coconut shell biochar

随着人口增长，粮食安全日益受到重视，耕地资源日益紧张，伴随的耕地重金属污染问题也日益严重。（剩余26022字）