采煤沉陷地新型复垦基质中Cd的植物去除效果研究  

Experiment on Phytoremediation of Cd in Reclaiming Substrate for Coal Mine Subsidence Land

作　　者：刘西敏[1] 冯永军[1] 郑九华[1] 郝桂喜[1] 

机构地区：[1]山东农业大学资源与环境学院,山东泰安271018

出　　处：《农业环境科学学报》2008年第1期212-215,共4页Journal of Agro-Environment Science

基　　金：山东省教育厅科技攻关资助项目(J02L07)

摘　　要：将粉煤灰与污泥按4∶1的质量比混合组成新型复垦基质。采用盆栽试验,研究了油菜和小白菜在基质中的生长情况及其对基质中Cd的去除效果。结果表明:(1)油菜和小白菜在基质中生长较好,随着生长时间的延长,株高、叶面积和生物量显著增加。(2)在不同生长时期,两种植物的转运系数均大于1,富集系数随着生长时间的延长而增大,表明两种植物对基质中Cd有较好的去除效果。In order to accelerate the reclamation of coal mine subsidence land and resource-oriented utilization of solid waste, fly ash was mixed with sewage sludge in weight proportion of 4：1 to get new reclaiming substrate. The removal of excessive Cd in reclaiming substrate through phytoremediation was studied using rape and pakchoi as plants by pot experiments. The growth character of rape and pakchoi and the phytoremediation effect of Cd in reclaiming substrate were researched by using fluvo aquic soil as control. The results showed that： （ 1 ） Rape and pakchoi grew better in reclaiming substrate, and their plant height, leaf area and biomass increased remarkably with extending of growth time. At harvest, the biomass of rape amounted to 30.65 g. plant^-1, evidently higher than that in the control. （2） During different growth period, the transformation coefficients of rape and pakchoi were both bigger than 1, and the absorption coefficient increased gradually with the growth of plants. So rape and pakchoi had good effectiveness on phytoremediation of Cd in reclaming substrate.

关 键 词：曲菜 小白菜 复垦基质 CD 植物修复 

分 类 号：X173[环境科学与工程—环境科学]