期刊论文

Effects of red mud application on rice growth and transformation of cadmium forms in Cd-contaminated paddy soils

中文

植物营养与肥料学报

1008-505X

2012

02

390-396

国家自然科学基金项目（50874046） 湖南省教育厅科技项目（08A032） “863”计划重点项目（2010AA065203）资助.

本校为第一机构

通过盆栽试验,研究了不同赤泥施用量对水稻产量、土壤中镉生物有效性及其形态和糙米镉含量的影响。结果表明,适宜的赤泥施用量能提高水稻有效穗数和促进水稻生长,实现水稻增产,与不施赤泥处理相比,0.75%（W/W）赤泥处理的水稻株高、有效穗数和产量分别提高了5.02%、1.12%和6.93%。随着赤泥施用量的增加,土壤pH值增加,土壤交换态Cd含量逐渐减少,碳酸盐结合态、铁锰氧化物结合态和残渣态Cd含量逐渐增加,但对有机结合态Cd含量的影响不明显,相比不施赤泥处理,1.25%（W/W）赤泥处理的土壤交换态Cd含量下降了31.6%（P〈0.01）,碳酸盐结合态、铁锰氧化物结合态和残渣态Cd含量分别增加了16.3%、22.5%和8...

A pot experiment was conducted to study the effects of application of different amount of red mud on rice yield, bioavailability and forms of cadmium in soils as well as cadmium concentrations in brown rice. The results indicate that the appropriate application of red mud can apparently promote rice growth and increase effective panicle number and grain yield. Compared to the control （RM-0） without red mud application, plant height, effective panicle number and grain yield in the 0.75% red mud （W/W） treatment are increased by 5.02%, 1.12% a...