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1、安徽农业科学,JournalofAnhuiAgri.Sci.2007,35(27):8586-8588,8629责任编辑孙红忠责任校对李菲菲啤酒废水灌溉对土壤微生物区系的影响*商冉,李光德,曲衍波,刘坤,张中文(山东农业大学资源与环境学院,山东泰安271018)摘要为合理利用啤酒废水进行农田灌溉提供依据。采用泰安市啤酒厂经简单处理的啤酒废水,以清污水比101、51、21、11、12、15和110分别灌溉盆栽小麦和玉米,对土壤中各种菌类微生物数量的变化情况进行研究。啤酒废水灌溉盆栽小麦和玉米对
2、土壤微生物数量影响明显。随着污水浓度的不断增大,细菌、放线菌、好气性纤维素分解菌、硝酸菌、亚硝酸菌、自生固氮菌等的数量均呈现先增加后减少的变化规律。污水浓度过大,会刺激土壤中真菌、氨化细菌、反硝化细菌及一些厌气性菌的繁殖。当废水浓度适当时,污水中的营养成分可以为微生物所用,刺激其活性。综合考虑各种微生物对作物的不同影响,啤酒废水灌溉浓度清污水比以控制在21~12为最佳,污水浓度过高反而不利于植物生长。关键词啤酒废水;盆栽;土壤微生物中图分类号S154.3文献标识码A文章编号0517-6611(2007)27-08586-03In
3、fluenceofBreweryWastewaterIrrigationonSoilMicrofloraSHANGRanetal(CollegeofResourcesandEnvironment,ShandongAgriculturalUniversity,Taian,Shandong271018)AbstractThestudyaimedtoprovidebasisforfieldirrigationwithbrewerywastewaterrationally.ThesimplyprocessedbrewerywastewaterfromB
4、reweryofTaianCitywasusedtoirrigatepottedwheatandcornswithratioofwatertoswageat101,51,21,11,12,15and110.Thequantityvariationsofvariousbacterialmicrobialinsoilwerestudied.Theinfluenceofirrigatingpottedwheatandcornswithbrewerywastewateronsoilmicrobialquantitywasobvious.Alo
5、ngwiththewastewaterconcentrationincreasingcontinuously,thequantitiesofbacteria,actionomycetes,aerobiccellulosedecomposingbacteria,nitricacidbacteria,nitrousacidbacteria,freelivingnitrogenfixingbacteria,etc.allpresentedthelawoffirstincreasingandthendecreasing.Ifthewastewate
6、rconcentrationwastoohigh,itwouldstimulatefungus,aminatebacteria,denitrifyingbacteriaandsomeanaerobicbacteriatopropagate.Whenthesewageconcentrationwassuitable,thenutrientcomponentsinsewagecouldbeusedbymicrobialandstimulatedtheiractivities.Consideringthedifferentinfluencesofvari
7、ousmicrobialoncropscomprehensively,itwasbesttocontroltheirrigationconcentrationofbrewerywastewaterwiththeoptimumratioofwatertosewageof21~12andthehighersewageconcentrationwouldbedisadvantageoustoplantgrowth.KeywordsBrewerywastewater;Potculture;Soilmicrobial目前世界水资源日趋紧张,农业用水
8、严重不足,废水灌类型及其培养基概况见表1[7]。溉面积逐年扩大。污水灌溉不仅可以缓解农业用水的紧张表1受测菌类及其培养
