冀北山区矿区周边镉铅污染农田钝化修复研究  

The Immobilization of Cd and Pb in Contaminated Soil Around Mines in Mountainous Area of Northern Hebei

作　　者：薛忠财 马方方 柳洁 Xue Zhongcai;Ma Fangfang;Liu Jie(College of Resource and Environment Science,Hebei Normal University for Nationalities,Chengde 067000,Hebei,China)

机构地区：[1]河北民族师范学院资源与环境科学学院,河北承德067000

出　　处：《农学学报》2021年第2期50-56,共7页Journal of Agriculture

基　　金：河北民族师范学院博士科研启动基金项目“甜高粱对镉的耐性生理机制研究”(DR2018002)。

摘　　要：为了筛选出一种适用于冀北山区矿区周边铅镉污染农田的土壤调理剂配方,本研究采用室内土壤培养试验,以石灰、蒙脱石、生物炭、沸石为材料,研究不同组合方式和添加量(0.5%、1%、3%、5%)对土壤中有效态Cd和Pb含量的影响。结果表明,土壤有效态Cd含量、有效态Pb含量和土壤pH因土壤调理剂不同组合方式和不同添加量呈现不同的变化趋势。与对照相比,随着添加量的增加,有效态Cd和Pb含量呈下降趋势,且不同材料组合的钝化效果均好于单一材料处理。按照20%30%、10%20%、40%50%和0%30%比例将石灰、蒙脱石、生物炭和沸石组合,对该地区土壤中有效态Cd和Pb的钝化效果最好。According to Cd and Pb pollution status in soil around mines in mountainous area of northern Hebei,the content of available Cd and Pb were studied after adding combinations of lime, montmorillonite, biochar and zeolites with different amounts(0.5%, 1%, 3%, 5%) by a soil culture experiment in laboratory, aiming to screen a soil conditioner with good effect. The results indicated that the content of available Cd, available Pb and pH in the soil were changed by different kinds and amounts of soil conditioners. The content of available Cd and Pb in the soil decreased with the increase of soil conditioner. Meanwhile, the immobilization effect of combinations of materials on the available Cd and Pb in soil was better than that of single material. The combination of 20%-30% lime, 10%-20% montmorillonite, 40%-50% biochar and 0-30% zeolites had the best decreasing effect on the content of available Cd and Pb in the soil around mines in mountainous area of northern Hebei.

关 键 词：冀北山区 重金属污染 土壤调理剂 钝化修复 生物炭 

分 类 号：S318[农业科学—作物栽培与耕作技术]