外源镧对黑麦草-铜尾矿系统土壤酶活性的影响  

Effect of La on the Soil Enzymatic Activities of Copper Tailings-Lolium perenne System

作　　者：吴亭亭[1] 燕傲蕾[1] 王友保[1,2] 张旭情[1] 

机构地区：[1]安徽师范大学生命科学学院,安徽芜湖241000 [2]安徽师范大学生物环境与生态安全安徽省高校省级重点实验室,安徽芜湖241000

出　　处：《河南农业科学》2010年第8期52-54,58,共4页Journal of Henan Agricultural Sciences

基　　金：安徽省高校自然科学基金重点项目(KJ2009A104);重要生物资源保护与利用研究安徽省重点实验室基金资助项目

摘　　要：对供试土壤添加不同含量的LaCl3,并通过盆栽试验研究外源镧对黑麦草-铜尾矿系统土壤酶活性的影响。结果表明:La的添加对试验组和对照组土壤的过氧化氢酶活性有一定的抑制作用,并且随着La含量的增加,抑制作用增强;蔗糖酶、脲酶以及磷酸酶活性则随着La含量的增加而增强。试验组的土壤酶活性与对照组相比,蔗糖酶、脲酶和磷酸酶的平均活性分别上升了16.59%、30.65%和13.19%,过氧化氢酶的平均活性下降了6.33%。除脲酶外,蔗糖酶、脲酶以及磷酸酶的活性,试验组与对照组都存在极显著差异(P<0.01)。研究显示,添加La可以增加种植黑麦草的土壤酶活性,对修复铜尾矿地区土壤铜污染的效果显著。Lolium perenne and La were used to remediate the copper tailings by using pot experiment.The four soil enzymatic activities were measured.The results showed that La had a suppressive effect on catalase activity,whereas urease,phosphatase and invertase activity were all increased by added La.The soil enzymatic activities in the experimental group increased significantly（P0.01）.Compared with control group,urease,phosphatase and invertase activities of experimental group were incresed 30.65%,13.19% and 16.59% respectively.In conclusion,L.perenne and La has great value in remediating copper-contaminated soils.

关 键 词：铜尾矿 稀土 镧 黑麦草 土壤酶活性 

分 类 号：S156[农业科学—土壤学]