【摘要】 通过盆栽试验观察象草在重金属污染改良土壤下的生长状况和镉的累积量。结果发现,少量单纯的Cd可以促进象草的生长。对于复合重金属处理土壤,随着Cd浓度的增加,象草长势越来越差。添加Cd的量越多,植株吸收Cd的量也越大。赤泥的加入,可以减轻重金属对植物的影响,抑制植株对Cd的吸收,赤泥还具有改良土壤的作用。更多还原

【Abstract】 The paper investigated the influence of heavy metal element treated soil on the growth of Pennisetum Purpureum and the accumulation of cadmium in the plant.The result indicated that the sole cadmium treatment with relative lower concentration(20 mg/kg) could promote the growth of Pennisetum Purpureum while the content of Cd in vegetable was more than the state standard for vegetable sanitation.Without the treatment of heavy metal elements,the growth of Pennisetum Purpureum was inhibited.The denser the cadmium was in the soil,the worse the plant grew and the more cadmium was accumulated in the plant.The application of red mud could abate the influence of heavy metal element on the growth of Pennisetum Purpureum and reduce the accumulation of cadmium in the plant.Red mud also could regulate the soil pH value and its electric conductivity.更多还原