期刊论文

Effects of red mud addition on fractions of Cd, Pb and wheat root growth in calcareous soil

Wei, J.

中文

环境工程学报

1673-9108

2017

11

4

2560-2567

10.12030/j.cjee.201606191

2015WK3016:湖南省科技厅重点项目 16IRTSTHN012:河南省高等学校科技创新团队支持计划 16A610015:河南省教育厅科学技术研究重点项目

本校为第一且通讯机构

通过田间种植小麦实验,研究添加不同剂量拜耳赤泥(0%、1%、2%、3%、4%和5%)对重金属污染的石灰性土壤Pb、Cd化学形态和小麦幼苗根系的影响。培养1个月,添加赤泥显著地提高了土壤pH值,提高幅度随赤泥投加量增加而增大。培养3个月,添加不同剂量的赤泥均明显降低土壤中可交换态Pb和Cd的含量,赤泥投加量为5%时效果最为显著,分别比对照下降90%和72%。添加赤泥对所种植小麦幼苗的根系也有影响。种植5个月,小麦根系总根长、总表面积和总体积等随添加赤泥的剂量增加呈现先增大后减小的趋势,赤泥投加量为3%时增幅最大,总根长、总表面积和总体积分别比对照增加88.23%、75%和90.32%。研究表明,赤泥可作为重...

The effects of adding red mud into the soil (with dosages of 0%, 1%, 2%, 3%, 4%, and 5%) on wheat seedling roots and on fractionation of Cd and Pb in soil were determined in a field experiment. The addition of red mud increased the soil pH after one month of incubation and the effect was enhanced with higher red mud dosage. Adding red mud with different dosages significantly decreased the concentration of exchangeable Pb and Cd after three months of incubation. Compared with the control sample, the concentration of exchangeable Pb and Cd decrea...