摘要
在温室条件下通过水稻盆栽试验,研究了植物对添加Pb、Cd、Cu、Zn等重金属的吸收.结果表明,供试元素的迁移受本身的性质、交互作用、添加量以及土壤吸持强度所影响.植物对Pb、Cd、Cu、Zn的吸收系数与用等温吸附方程所表示的土壤吸附强度和金属元素的第一级水解常数值有关.离子冲量与稻谷产量的关系表明,它有可能作为一种污染总量控制指标,反映了总量控制中“有效态”的重要性.
The uptake of soil Pb, Cd, Cu and Zn by rice were studied using pot experiments in greenhouse and the results showed that the transfer of the heavy metals was dependent on the first hydrolysis constant of the eleme-nts, the interaction among the elements, the dose applied and the affinity of the elements to the soils, which are related to the adsorption isotherm. The relation between the ionic impulsion and the grain yield implied that the former might be used as an indicator for soil heavy metals pollution management.
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1990年第2期145-152,共8页
Acta Scientiae Circumstantiae
关键词
水稻
重金属
土壤
污染
离子冲量
combination pollution
heavy metal
rice
ionic impulsion.
