期刊论文

中文

农业环境科学学报

1672-2043

2012

31

2

318-324

国家自然科学基金项目（50874046） 国家863项目

本校为第一机构

赤泥能促进土壤中镉形态转化(离子交换态向残渣态转化),但赤泥碱性很强,对土壤的功能有一定的破坏,为此采用盆栽试验研究了赤泥粉和改性赤泥颗粒对酸性潮泥田土壤镉形态分布及水稻生长的影响。结果表明,同比例(5%W/W)赤泥颗粒的pH值较赤泥粉下降2.4个单位,但随着时间的推移,改性后赤泥颗粒中OH-有缓释的趋势;同比例(5%W/W)赤泥颗粒对镉污染土壤的形态分布影响在修复前期比赤泥粉小,在修复后期与赤泥粉基本相同甚至稍大,但两者对水稻生长影响不同:添加赤泥颗粒导致水稻增产18.3%,添加赤泥粉导致水稻减产33.3%;赤泥粉和赤泥颗粒均能抑制水稻对土壤中镉的吸收,添加量越高,抑制效果越明显;添加合适的...

Red mud can promote fractions transformation of Cadmium （Cd） in contaminated .soil （ion-exchangeable into the residual fraction）, however, the function of soil was destructed by its strongly alkaline（pH 12-13 ）. The effects of red mud and modified red mud particles on rice growth and distribution of Cd fractions in acid moist mud field soil by the way of pot experiments was studied in this paper. The results showed that the pH value of granulated red mud decreased 2.4 units in the same proportion （5% W/W） compare to red mud, but as time...