土壤-水稻系统中重金属元素与其他元素之间的相互作用

通过相关关系的统计分析,探讨了四川省61件水稻籽实及其根系土中重金属元素与其他元素间的相互关系。研究结果表明:①水稻籽实对重金属元素、微量元素、大量元素的富集系数差异很大,元素富集系数之间具有显著的相关性;②水稻籽实中重金属元素的含量与土壤中部分元素的含量之间存在着显著的相关关系;③水稻籽实重金属元素的含量与籽实中其他元素含量之间的相关关系显著。结合元素之间的相互作用对元素地球化学行为的影响,评价了作物籽实中重金属元素的危害程度,为土壤修复提供了新思路。

Interaction among heavy metals and other elements in the soil-paddy rice system

The paper discusses the correlation between heavy metals and other elements in 61 samples of paddy rice grains and its rhi- zosphere sobs in Sichuan through a statistical analysis.The main results show that:(1) there is appreciable difference in coefficients of heavy metals and other elements in rice grams and a marked correlation is found between the element concentration concentrations coefficients;(2) there is a significant correlation between the concentrations of heavy metals in paddy rice grains and those of other ele- ments in soils;(3) there is a significant correlation between the concentrations of heavy metals and those of other elements in paddy rice grains.Based on the above,combined with the influence of interactions among elements on geochemical behaviors of elements, the harm of heavy metals to crop grains are evaluated,which provides a new idea for soil remediation.