期刊论文

中文

农业资源与环境学报

2095-6819

2017

34

1

38-46

10.13254/j.jare.2016.0208

公益性行业（农业）科研专项（201203045）； 天津市科技支撑计划重点项目（14ZCZDSF00004）； 天津市农业科技成果转化与推广项目（201404100）；

本校为第一机构

通过盆栽和大田小区试验,研究了膨润土对Cd污染土壤修复效应。结果表明,盆栽和大田条件下施用膨润土后土壤Cd交换态含量分别较对照降低了41.3%～86.1%和7.9%～24.6%,铁锰氧化物结合态（OX）和残渣态（RES）Cd含量则有所上升。水稻各部分Cd含量总体上随膨润土投加量的增加而降低,与对照相比,盆栽条件下根、茎、叶、糙米中Cd含量最大降幅分别达到46.0%、49.8%、54.2%和71.8%,大田小区条件下水稻各部分Cd含量最大降幅分别达到35.3%、48.8%、36.0%和40.9%。投加不同浓度膨润土后,水稻幼苗叶片SOD酶活性和可溶性蛋白含量在一定程度上有所促进,而POD酶活性和MDA含量则表现为明显的抑制效应（P〈0.05）...

Pot experiments and field trials were conducted to investigate the effects of bentonite on immobilization and remediation of low- level Cd contaminated soils. The results showed that under pot and field experiments the concentrations of exchangeable Cd after applied bentonite to soils decreased by 41.3%～86.1% and 7.9%～24.6%, respectively, when compared with the control group, while the contents of Fe-Mn oxides（OX） and residual（RES） fraction of Cd were increased. Cd concentration in the parts of Oryza sativa L. decreased with the increment...