欢迎来到天天文库
浏览记录
ID:53759842
大小:387.24 KB
页数:6页
时间:2020-04-24
《共消化污泥施用对贫瘠土壤性质和蔬菜品质的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、农业环境科学学报2012,31(9):1842-1847JournalofAgro—EnvironmentScience共消化污泥施用对贫瘠土壤性质和蔬菜品质的影响徐欣,张盼月,张光明一,王伟4(1.北京林业大学北京市水体污染源控制技术重点实验室,北京100083;2.中国人民大学环境学院,北京100872;3.I家环境保护环境微生物利用与安全控制重点实验室,清华大学,北京100084;4.清华大学环境学院,北京100084)摘要:将市政污泥、餐厨垃圾和果蔬垃圾的共消化污泥进行农业利用,通过分析土壤和蔬菜中营养元素和重金属含量,研究共消化污泥对土壤营养元素变化、蔬菜养分吸收、土壤重金属累积
2、、蔬菜重金属积累的影响。结果表明,共消化污泥施用显著提高了土壤有机质、总氮、总磷含量,且提高幅度与共消化污泥的施用量呈线性关系,同时促进了蔬菜对氮、磷的吸收和利用,但土壤总钾含量和蔬菜对钾的吸收受共消化污泥施用影响较小。共消化污泥施用后,土壤中zn、cu和cd含量增加,尤其是cd含量增加较明显,并且在蔬菜中累积,但土壤重金属含量均低于土壤环境质量标准二级标准规定的限值,蔬菜可食部分中cu、zn、cr和cd含量均低于食品中污染物限量规定的限值。因此,在共消化污泥农业利用过程中,仍需重点关注重金属含量的变化和累积。关键词:共消化污泥;萝卜;油菜;营养元素;重金属中图分类号:X705文献标志码:
3、A文章编号:1672—2043(2012)09—1842—06EfectsofCo-digestedSludgeApplicationonInfertileSoilandVegetableQualityXUXin,ZHANGPan—yue,ZHANGGuang—ming,WANGWei(1.BeijingKeyLabforSourceControlTechnologyofWaterPollution,BeijingForestryUniversity,Beijing100083,China;2.SchoolofEnvi—ronmentandNaturalResources,RenminUn
4、iversityofChina,Beijing100872,China;3.StateEnvironmentalProtectionKeyLaboratoc~ofMicroorganismApplicationandRiskControl(MARC),TsinghuaUniversity,Beijing100084,China;4.SchoolofEnvironment,TsinghuaUni—versity,Beijing100084,China)Abstract:Theadditionoffood,fruitandvegetablewastemaypromotetheeficiency
5、ofsewagesludgedigestion.Agriculturaluseofco-di—gestedsludgeisaneffectivemethodforsludgedisposalandsoilimprovement.Inthisstudy。theeo—digestedsludgewasappliedforagricul—turaluseviaplotexperiments.Twovegetablespecies(radishandChinesecabbage)werechosenastestplants.EffectsofCO—digestedsludgeapplication
6、onchangeofsoilnutrientandheavymetalcontents,andtheiruptakeandaccumulationbyvegetableswerestudied.Theresultsshowedthatcontentoforganicmatters,totalnitrogen,andtotalphosphorusinsoilsignificantlyincreasedduetotheco-digestedsludgeappli-cation,andalinearrelationshipwasobservedbetweenthesoilnutrientincr
7、easeandco-digestedsludgedosage.Thenitrogenandphosphorusuptakebyvegetableswerepromoted;whilethetotalpotassiumcontentinsoilandvegetableswaslittleinfluencedbyco-digestedsludgeap-plication.AfterCO—digestedsludgeappli
此文档下载收益归作者所有