supported by the National Key Tech-nology R&D Program of China (2006BAD17B07,2006BDA07A13-1-2) ;the Staring Fund for Doc-tors of Shandong Academy of Agricultural Sciences,China (2006YBS015)
Heavy metal pollution in agricultural soils has serious negative influence on human health. Concentrations of Cd, Hg, As, Pb, Cr, Cu, Zn, and Ni in top soils (0-20 cm) of greenhouses and farmlands from four main veg...