期刊论文

Effects of Soil Conditioner on Migration and Transport of Cd into Rice

中文

安徽农业科学

0517-6611

2018

46

31

53-55+76

10.13989/j.cnki.0517-6611.2018.31.017

国家自然科学基金项目(4121511)； 湖南省自然科学基金项目(08JJ6018)； 湖南省教育厅青年基金项目(12B059)； 湖南省农业厅项目(2014137)； 湖南省教育工委大学生思想提升工程项目(湘教工委通[2014]89号)；

本校为第一机构

[目的]研究土壤改良剂对镉向水稻中迁移转运的影响。[方法]选取重金属镉重度污染稻田进行大田试验,研究8种钝化剂对土壤中有效态镉向水稻中迁移积累的影响,以及对土壤pH、水稻产量、稻米中镉含量的影响。[结果]通过施入钝化剂,能够显著降低土壤中镉向水稻中迁移转运,达到稻米中降镉的目的,并且能够为水稻提产增效。与CK相比,施入钝化剂能够提高土壤pH 1.3%～4. 3%,降低土壤中镉的活性;在对土壤有效态镉方面,以纳米螯合铁最为明显,最佳处理能够显著降低土壤镉的有效性76.5%;在水稻产量方面,施入钝化剂能够提高水稻产量1.01%～9.43%;在稻米镉含量方面,纳米螯合铁能够显著降低稻米中镉含量,其降幅达...

[ Objective ] To study the effect of soil conditioner on migration and transport of cadmium into rice. [ Method] The heavy metal cadmium heavily polluted riee field was seleeted for field experiment to study the efleets of eight passivators on the migration and aeeumulation of available eadmium in rice, and the effects on soil pH, riee yield and cadmium eontent in rice. [ Result ] The passivator could aehieve the target of signifieantly redueing the Cd into the rice and rice yield. Compared with the CK, fertilization passivator could inerease soil pH by 1.3%- 4.3% and reduce the aetivity of Cd...