赤泥治理重金属污染土壤对通菜生长的影响  

Effects of red mud on the growth of Ipomoea aquatica in heavy metal contaminated soil

作　　者：温玉辉[1] 聂呈荣[1] 杨瑜蓉[1] 吴业鸿[1] 杨文瑜[1,2] 

机构地区：[1]佛山科学技术学院作物遗传育种研究所,广东佛山528231 [2]华南农业大学资源环境学院,广东广州510642

出　　处：《佛山科学技术学院学报（自然科学版）》2011年第1期5-8,共4页Journal of Foshan University(Natural Science Edition)

基　　金：国家星火计划资助项目(2008GA780036)

摘　　要：赤泥作化学改良剂能有效降低土壤重金属对通菜生长的抑制作用,增加植株生物量,显著增加通菜地上部鲜重与干重。重金属污染的土壤经过赤泥处理还能使通菜中Cd的含量显著降低,表明赤泥可以有效减少通菜对重金属Cd的吸收。经赤泥处理后,重金属污染土壤的pH值显著上升,从而降低土壤中重金属含量。The paper investigated the effect of red mud on the heavy metal contaminated soil. The result indicated that the sole cadmium treatment with relative lower concentration （20 mg/kg） could promote the growth of Ipomoea aquatica. In the soil polluted by several heavy metal elements, the growth of Ipornoea aquatica was inhibited, and the content of Cd in vegetables were also larger than the control. The denser the cadmium was in the soil, the worse the plant grew, the lower the plant biomass was and the higher the cadmium was accumulated in the plant. The application of red mud could abate the influence of heavy metal elements on the growth of Ipornoea aquatica and reduce the accumulation of cadmium in the plant.

关 键 词：赤泥 重金属污染土壤 通菜 

分 类 号：S155.41[农业科学—土壤学]