Abstract:

In this study,  geochemical elements were investigated in the Yutai high quality rice base, which is one of the typical agricultural products bases in Shandong Province, China. The soil geochemistry was investigated through 28 chemical elements, such as pH, C(org), As, B, Cd, Co, Cr, Cu, F, Hg, Mn, Mo, Ni, P, Pb, V, Zn, Se, N, S, SiO₂, _Al2O3, Fe2O3, MgO, CaO, Na₂O and K₂O. The study of soil geochemical showed that the useful elements of N, P, K, B, Mo, Mn, Se, and Fe were enriched in the Yutai high quality rice base soil. However, some heavy and toxic elements, such as As, Cd, Hg, and Pb were obviously enriched in the surface soil. The contents of As,B,Co,Cr,F,Mn,V,S,Al₂O₃,_TFe2O3,MgO, and CaO in the submerged paddy soil (SPS) were obviously greater than in the fluvoaquic soil (FAS), but SiO₂ and Na₂O were obviously lower in the FAS. The contents of C(org) and moisture in the SPS were obviously higher than in the FAS. The results showed that the SPS was apt to be acidified.

Key words: soil; geochemical elements; submergenic paddy soil; fluvo-aquic soil; principal component analysis; Yutai