不同修复方式对铅锌尾矿砂微生态环境的改良作用  

Improvements of Different Remediation on Micro-ecosystem of Lead and Zinc Mine Tailing

作　　者：朱佳文[1,2,3] 邹冬生[1] 向言词 徐华勤[4] 

机构地区：[1]湖南农业大学生物科学技术学院,湖南长沙410128 [2]湖南科技大学资源环境与城乡规划管理系,湖南湘潭411201 [3]湖南省煤炭资源清洁利用与矿山环境保护重点实验室,湖南湘潭411201 [4]湖南农业大学农学院,湖南长沙410128

出　　处：《水土保持学报》2012年第5期139-143,共5页Journal of Soil and Water Conservation

基　　金：国家科技支撑计划项目(2012BAD14B00);湖南省科技厅科技计划项目(2010NK3020);湖南省教育厅重点项目(10A031)

摘　　要：采用盆栽试验方法研究黑麦草、黑麦草联合改良剂等不同修复方式对铅锌尾矿砂的理化性质和微生物性状的改良作用。结果表明,不同处理使铅锌尾矿砂中有机质、碱解氮、速效磷含量显著提高,其中黑麦草联合10%菜园土和1%赤泥处理(CN1)对铅锌尾矿砂中有机质、碱解氮、速效磷含量明显提高,分别比对照提高了51.82%,300.00%和901.29%。添加改良剂显著增加了黑麦草的生物量,减少了黑麦草根部重金属的含量。不同处理使铅锌尾矿砂中微生物数量,微生物C、N含量显著增加,其中CN1处理使细菌、真菌、放线菌数量和微生物C、N含量增加效果最好,分别比对照增加了33.78,5.99,21.82,6.34,6.35倍。各处理显著提高了尾矿砂中脲酶、磷酸酶、蔗糖酶、纤维素酶活性,其中CN1处理使脲酶、磷酸酶、蔗糖酶、纤维素酶活性分别比对照提高了18.43,12.58,5.00,9.15倍。黑麦草联合10%菜园土和1%赤泥较其他处理有利于提高铅锌尾矿砂的肥力,改良尾矿砂的微生态环境,促进植物生长。A pot experiment was conducted to study the characters and biological properties of ryegrass and ryegrass-amendment combined remediation in Pb/Zn mine tailing.The results showed that the concentrations of organic matter,olsen phosphorous and alkaline nitrogen were significantly improved with different treatments in Pb/Zn mine tailing.Compared with no remediation,the concentrations of organic matter,alkaline nitrogen and olsen phosphorous in Pb/Zn mine tailing were increased by 51.82%,300.00% and 901.92% with treatments named the ryegrass and 10% garden soil and 1% red mud（CN1）,respectively.The biomass of ryegrass were promoted,while the concentrations of heavy metals in the roots of ryegrass were reduced under application amendments conditions.The amount of soil bacteria,fungi,actinomyces,soil microbial biomass carbon and nitrogen after remediation were significantly higher than those of no remediation.The amounts of soil bacteria,fungi,actinomyces,soil microbial biomass carbon and nitrogen in CN1 treatment was highest among the treatments,with 33.78 times,5.99 times,21.82 times,6.34 times and 6.35 times respectively.The activities of soil urease,phosphatese,invertase and cellulose were obviously improved by 18.43 times,12.58 times,5.00 times and 9.15 times,in particular,the CN1 treatment was highest compared.Thus,it could concluded that combined remediation（CN1）,ryegrass and 10% garden soil and 1% red mud was performed in improving soil fertility,soil micro-ecosystem and promoting ryegrass growth in Pb/Zn mine tailing.

关 键 词：铅锌尾矿砂 黑麦草 改良剂 赤泥 微生态环境 

分 类 号：X53[环境科学与工程—环境工程] Q89[生物学]