Abstract:Geochemical investigation of soil and agricultural geological environment in Chengwu county of Shandong province has been carried out according to shallow and deep soil sample with one point per 4km2. 14 kinds of indexes have been tested, such as N, P, K, Cu, Zn, B, Mo, Mn, F, As, Hg, Pb, Cr, Cd. On the basis of counting soil geochemical parameters in shallow and deep layers, the differences of same kind parameters in Shandong province and the world have been analyzed, and relationship of element contents in shallow and deep soils in this area have been analyzed as well. It is considered that significant characteristics of element contents in shallow soil in this area has high value in F, Hg and and low value in Mo. The contents of most elements in shallow soil inherited the ingredient characterisics from soil parent material, but the elements like N, F, Hg, and Pb are obviously enriched on topsoil because of human activities and polluting resources. On the basis of analyzing effective quality of nutrient element in shallow soil, it is known that the effective quality of P, K, and Zn is high with a strong feeder capacity, while effective quality of Mo, Cu and Mn is obviously low. Through analyzing content value of easily polluted element in shallow soil, by using pollution index method, the soil pollution degree in the whole area has been evaluated. There is no severe polluted area in this area, and the obvious polluted area is rather small and distributed sporadically. It is indicated that pollution degree in the area is small.
