Agricultural geochemical environmental evaluation for Poyang Lake and its surrounding economic districts

Based on the information of 1:250,000 scale multi-purpose geochemical survey of Poyang Lake and its surrounding areas,this paper discussed in detail the distribution characteristics of 16 nutrient elements including C,H,O,N,P,K,Ca,Mg,S,Cu,Zn,Fe,Mn,B,Mo and Cl,which the plant requires.The comprehensive evaluation of soil environmental quality respectively for innoxious rice producing area,innoxious vegetable producing area and green food producing area was made by using of the method of Nemero Index.On this basis,the comprehensive evaluation of eco-geochemical environmental quality of surface soils in Poyang Lake and its surrounding economic districts was proposed.