-28-第46卷第3期非金属矿Vol.46No.32023年5月Non-MetallicMinesMay,2023改良磷石膏对黑麦草生长及渗滤液的影响曾维1尹辉2刘方1,3朱健1,3*贺宇1翟念1安娜娜1赵菊1(1贵州大学资源与环境工程学院,喀斯特地质资源与环境教育部重点实验室,贵州贵阳550025;2贵州省环境工程评估中心,贵州贵阳550002;3贵州喀斯特环境生态系统教育部野外科学观测研究站,贵州贵阳550025)摘要将生物质炭、菌渣、赤泥等添加到磷石膏中进行改良,研究其对黑麦草生长及基质渗滤液组分的影响。结果表明,C处理组(60%磷石膏+5%生物质炭+10%赤泥+10%菌渣混匀,5%生石灰中间层,10%菌渣作底层)效果最佳。改良后基质渗滤液pH升高,电导率(EC)和总溶解性固体(TDS)下降,重金属含量显著降低。同时,微生物群落多样性和丰富度增加,有效促进磷石膏基质中微生态环境建立,促进黑麦草的生长。生物质炭改良的磷石膏基质能够有效改善磷石膏理化性质,促进植物生长,固化重金属。本试验为磷石膏的资源化利用提供了科学依据。关键词磷石膏;改良;黑麦草;重金属;微生物群落结构中图分类号:TQ09;X712文献标志码:A文章编号:1000-8098(2023)03-0028-05EffectofModifiedPhosphogypsumontheGrowthofRyegrassandLeachateFiltrationZengWei1YinHui2LiuFang1,3ZhuJian1,3*HeYu1ZhaiNian1AnNa’na1ZhaoJu1(1KeyLaboratoryofKarstGeoresourcesandEnvironment,MinistryofEducation,CollegeofResourcesandEnvironmentalEngineering,GuizhouUniversity,Guiyang,Guizhou550025;2GuizhouEnvironmentalEngineeringAssessmentCenter,Guiyang,Guizhou550002;3GuizhouFieldObservationandResearchStationofKarstEnvironmentandEcosystem,MinistryofEducation,Guiyang,Guizhou550025)AbstractThisstudyinvestigatestheeffectsofmodifyingphosphogypsumbyaddingbiomasscharcoal,bacterialresidue,andredmudonthegrowthofryegrassandthecomponentsofsubstrateleachate.TheresultsshowthattheCtreatmentgroup(60%phosphogypsum+5%biomasscharcoal+10%redmud+10%bacterialresiduemixeduniformly,5%quicklimeinthemiddlelayer,and10%bacterialresidueasthebottomlayer)hasthemostsignificanteffect.ThemodifiedsubstrateleachateexhibitsanincreaseinpHandadecreaseinEC,TDS,andheavymetalcontent.Moreover,thediversityandabundanceofthemicrobialcommunityincrease,effectivelypromotetheestablish...