广东红壤微量元素含量及分布特征

Contents and Distributions of Trace Elements in Red Soil of Guangdong Province

2004年对广东部分红壤9种微量元素含量调查结果表明,9种微量元素平均含量为B 41.38 mg kg-1,Mo21.71 mg kg-1,Cu 77.37 mg kg-1,Pb 33.94 mg kg-1,Zn 265.52 mg kg-1,As 19.018 mg kg-1,Hg 0.056 mg kg-1,Cr 248.95mg kg-1,Cd 0.324 mg kg-1。同族微量元素相比,原子量小的元素的含量大于原子量大的元素的含量。母岩、成土风化作用影响这些微量元素在土壤中的含量。

The average trace elements contents in red soil taken from Guangdong province in 2004 were B 41.38, Mo 21.71,Cu77.37, Pb 33.94, Zn 265.52,As 19.018,Hg 0.056,Cr 248.95,and Cd 0. 324 mg kg^-1 In the same group, the contents of trace elements with higher atomic weight were more than those of the others. The contents of B, Mo, Cu, Pb, Zn, As, Hg, Cr, and Cd were mainly dependent on parent rock, soil forming and weathering.