不同钝化材料对污灌农田镉污染土壤修复效果研究  

Remediation of Cadmium Polluted Soils by Different Amendments

作　　者：李中阳[1,2,3] 齐学斌[1,2,3] 樊向阳[1,2,3] 吴海卿[1,2,3] 李平[1,2,3] 胡超[1,2,3] 赵志娟[1,2,3] 

机构地区：[1]中国农业科学院农田灌溉研究所,河南新乡453002 [2]中国农业科学院河南新乡农业水土环境野外科学观测试验站,河南新乡453002 [3]中国农业科学院农业水资源高效安全利用重点开放实验室,河南新乡453002

出　　处：《灌溉排水学报》2016年第3期42-44,共3页Journal of Irrigation and Drainage

基　　金：国家高技术研究发展计划(863计划)项目(2012AA101404);国家自然科学基金项目(51209208;51209209);中央级公益性科研院所基本科研业务费专项(0032015035)

摘　　要：为了探讨不同钝化材料对镉污染土壤修复效果及其差异性,利用田间小区试验研究了5种钝化材料（赤泥、海泡石、过磷酸钙、钙镁磷肥和生物质炭）对夏玉米生长及其吸收镉的影响。结果表明,5种钝化剂及其施用量均对玉米各部位干物质量及其含镉量以及根际土壤有效态镉量均产生极显著影响（P〈0.001）。高量施用钝化剂对玉米各部位干物质增加比例最大,其中又以钙镁磷肥增加比例最大,根、茎叶、籽粒干物质量分别增加9.6%、7.0%、1.1%。5种钝化剂低量和高量处理均显著降低了玉米根、茎叶、籽粒含镉量以及根际土壤有效态镉量,其降低范围分别为10.8%～26.3%、9.0%～34.8%、15.7%～37.1%、5.1%～20.5%,其中高量赤泥处理降低玉米对镉的吸收效果最显著。In order to investigate the effects of different amendments on the remediation of Cd contaminated soil,field experiments were conducted to investigate the effects of five amendments（red mud,sepiolite,calcium superphosphate,calcium magnesium phosphate and biochar）on Cd uptake by maize and the Cd availability in soil.The results showed that the summer maize dry weight,the root,shoot and grain Cd concentration and rhizosphere soil available Cd concentration were significantly affected by different amendments and application amounts（P〈0.001）.The summer maize dry weight increased with the increase of application amounts of amendments.Compared with the control,calcium magnesium phosphate had more positive effect on the dry weight of root,shoot and grain,increasing by 9.6%,7.0%,1.1%,respectively.The application of amendments reduced root,shoot and grain Cd concentration and rhizosphere soil available Cd concentration by 10.8%～26.3%,9.0%～34.8%,15.7%～37.1%,5.1%～20.5%,respectively.Compared to other amendments,high application amounts of red mud had the most significant impact on the Cd uptake by maize and the Cd availability in soil.

关 键 词：钝化剂 夏玉米 镉 污染修复 

分 类 号：X53[环境科学与工程—环境工程]