针对古浪县土门镇部分工业区出现的土壤镉污染，选择对当地适应性强的刺儿菜为试材，基质中添加外源镉进行盆栽试验，测定植株的生物量、镉累积量、提取率等，研究刺儿菜植株对重金属镉的富集特性。结果表明:刺儿菜对镉具有一定的富集性，土壤镉浓度为15 μg/g 时其转移系数和富集系数最大，分别为5.14、2.76。刺儿菜可用于镉污染小于15 μg/g的地区进行土壤修复。

According to the soil Cd contamination in Tumen Town Industrial Zone in Gulang county， Cephalanoplos segetum of the local adaptability as test material， through pot experiment with add exogenous cadmium in matrix， plant biomass， cadmium accumulation， extraction rate is determined， this paper studied the accumulation characteristics of Cephalanoplos segetum on heavy metal cadmium. The result indicates that the Cephalanoplos segetum of cadmium has certain enrichment， when soil Cd concentration is 15 μg/g， transfer coefficient and enrichment coefficient is the maximum， 5.14， 2.76， respectively. It can be used for cadmium pollution are less than 15 μg/g in soil remediation.

X53；Q949.783.5