施用石灰石对土壤Cd及小白菜Cd吸收的影响研究  

Effects of Limestone Application on Cd Bioavailability in Soil and Absorption of Cd by Chinese Cabbage

作　　者：李婧[1] 陈森[1] 周艳文[1] 高小杰[1] Li Jing et al(Nanjing Research Institute of Environmental Protection, Nanjing 210013, China)

机构地区：[1]南京市环境保护科学研究院,江苏南京210013

出　　处：《安徽农学通报》2017年第19期58-61,共4页Anhui Agricultural Science Bulletin

摘　　要：为了明确石灰石对重金属污染土壤中Cd的治理效果,进行了小白菜盆栽试验。研究结果表明,适量添加石灰石(0.5%LS)可有效增加小白菜的产量,提高酸性土壤的p H值,增加土壤氮素和速效钾含量,但减少了土壤有效磷含量;施用石灰石对Cd污染土壤的修复具有显著效果,可有效降低土壤生物有效态Cd含量和小白菜对Cd的吸收。试验推荐石灰石添加比例为0.5%(m/m)。To pinpoint the harness effect of Cd in soil by limestone,Chinese cabbage pot experiment was carried out.The results showed,moderate addition of limestone（0.5%）（m/m）could increase the output of Chinese cabbage effectively,enhance the p H,the soil nitrogen content and available K of soil,but reduce available phosphorous;application of limestone showed significant effect on remediation of Cd contaminated soil,which could reduce the content of bioavailable Cd in soil and the absorption of Cd by Chinese cabbage.Recommended adding proportion of limestone was 0.5%（m/m）in this article.

关 键 词：石灰石 CD污染 生物有效性Cd 小白菜 

分 类 号：S63[农业科学—蔬菜学]