农业环境科学学报2013，Vol.32Issue(6)：1166-1171,6.DOI:10.11654/jaes.2013.06.012
油菜-海州香薷轮作修复铜镉复合污染土壤:大田试验
Application of Rotation System of Brassica Juncea and Elsholtzia Splendens to Remediate Copper and Cadmium-Contaminated Soil: A Field Trial
摘要
Abstract
Soil contamination with heavy metal has become an important issue that affects public health.So there is an urgent requirement for selecting appropriate technologies to solve food safety problems due to soil contamination.In this study,a field experiment was performed to study the accumulation and remediation efficiency of heavy metals in the rotation system of Brassicajuncea and Elsholtzia splendens on a heavy metal-contaminated field.The results showed that the straw biomass of the oilseed rape reached 7.67 t· hm-2 and the seed yield was 1.59 t·hm-2.The concentrations of Cd and Cu in the seed were 90％ and 33％ higher than the permissible limits,respectively.In the rotation system of Brassicajuncea and Elsholtzia splendens,the total uptake of Cd and Cu by shoots were 35.16 g·hm-2 and 400.68 g·hm-2,respectively,in which Brassicajuncea accounted for 83％ of the total Cd uptake and Elsholtzia splendens accounted for 73％.The remediation efficiency was 0.2％ for Cd and only 0.07％ for Cu.These results indicated that the rotation of Brassicajuncea and Elsholtzia splendens was not suitable for the highly copper and cadmium-contaminated soil.Not only the quality of the harvested seed does not meet the requirements of food hygiene standards,but also it will take a long time to remediate the polluted soil through the phytoremediation.关键词
镉铜复合污染/油菜/海州香薷/植物修复/轮作Key words
combined pollution of cadmium and copper/ oilseed rape/ Elsholtzia splendens/ phytoremediation/ rotation分类
资源环境引用本文复制引用
朱俊艳,于玲玲,黄青青,江荣风,李花粉,苏德纯..油菜-海州香薷轮作修复铜镉复合污染土壤:大田试验[J].农业环境科学学报,2013,32(6):1166-1171,6.基金项目
公益性行业(农业)科研专项(200903015) （农业）
国家自然科学基金项目(40971261) （40971261）
国家863重点项目(2007AA061001) （2007AA061001）
