不同农作物对镉污染土壤富集情况的研究

Study of Concentration in Different Crops on the Contaminated Soil by Cadmium

对四川省某矿山镉污染地区进行实地考察和样本采集,测定土壤中镉总量、土壤中镉有效态含量、不同种类农作物可食用部分镉含量、不同农作物的镉富集系数,并对测定结果进行比较和分析。测定结果表明,土壤中镉总量和有效态含量均与农作物可食用部分镉含量不成正相关关系,不同种类的农作物对镉的富集情况相差较大,同一作物不同部分镉富集情况亦不相同。

With field investigation and sample collection of a cadmium-contaminated mine areas in Sichuan province,the total amount of cadmium in the soil,the available cadmium in the soil,the cadmium in the edible part of different crops and the cadmium concentration coefficient of different crops were gauged.Then,the results were compared and analyzed.The results show that the total amount of cadmium and the available cadmium in the soil are not in positive correlation to the cadmium content in edible parts of crops.The cadmium concentration in different crops varies greatly and the concentration in different parts of the same crop is also different.