期刊论文

Comparison of remediation potential for two crop rotation patterns on Cd contaminated soils

Zeng, Q.

中文

环境工程学报

1673-9108

2017

11

6

3873-3878

10.12030/j.cjee.201603031

(201009047):环境保护部公益性行业科研专项 (农办财函(2014)28):湖南重金属污染耕地修复及农作物种植结构调整试点项目

本校为第一且通讯机构

选取重金属Cd污染较严重的郴州矿区废弃农田土壤进行盆栽实验,以红叶甜菜-菊苣和菊苣-油葵作为研究对象,研究2种轮作模式对土壤重金属Cd的修复潜力。实验结果表明:3种作物在轮作期间生长状态良好且对重金属都表现出较强的耐性及吸收积累能力。在红叶甜菜-菊苣轮作模式中,甜菜和菊苣的地上部分对Cd的富集系数(BCF)分别为11.34和8.22;在菊苣-油葵轮作模式中,菊苣地下和地上部分对Cd的富集系数分别为14.14和16.32,成熟油葵各个部位的富集系数都大于1,其中,叶和果肉的富集系数分别为2.57和2.19。因此,对于重金属Cd轻、中度污染的土壤来说,甜菜-菊苣轮作模式对于Cd的富集效果要优于菊苣-油葵。总的来...

In this study, soil collected from farmland in Chenzhou polluted with the heavy metal Cd was used to conduct pot experiments. These were used to study the repair potential of planting patterns featuring pairing of two crop species, edible-leaf-beet with endive, and endive with oil sunflower, for extracting heavy metals from polluted soil. The experimental results showed that three kinds of crops grew in good condition during the planting period, and showed good tolerance and capacity for absorption of heavy metals. In the planting pattern edibl...