几种母质土壤及糙米中重金属含量差异性初探

砂页岩、河流冲积物、洪积物、第四纪红土和花岗岩是桂东北地区农业土壤的主要成土母质.本文对这5种成土母质的稻田土壤及糙米中的 Cu、Zn、Pb、Cd、Ni、As、Cr、Hg 8种重金属元素含量的差异性进行了检验,对这5种母质的土壤糙米重金属元素含量相关性进行了分析.结果表明,多数元素在多数母质及糙米中的含量差异不显著;除 Cu在第四纪红土—糙米、Pb 在砂页岩—糙米中的含量相关性达显著水平外,其它的母质—糙米中重金属含量相关不显著.

PRELIMINARY EXPLORATION ON DIFFERENCE OF HEAVY METAL CONTENTS IN THE SEVERAL PARENTAL SOILS AND BROWN RICE

Arenaceous shale,alluvial deposits,diluvium,the Quaternary period red soil and granite are the main soil-forming rocks in the northeast of Guangxi.This paper tests the content difference of 8 elements of Cu,Zn. Cd,Ni,As,Cr and Hg in the soils of paddy field and brown rice on those five soil-forming rock and analyses the content correlation of heavy metal elements in the soils-brown rice on those five soil-forming rock.The result shows that the content difference of most elements in the most parental soils and brown rice dose not significant and content correlation of heavy metal elements in the soils-brown rice on those five soil-forming rock dose not significant except Cu of the Quaternary period red soil-brown rice and Pb of the arenaceous shale-brown rice.