Seudy on the Geochemical Background of Soil for Agroecological Base in West Area of Jilin Province

As proved by survey,the contents of N and K are approacht that of world average value,P,Mg,S,Mn,Cu,Zn,Mo,Cd and Cr are low,soil nutritive element B,Zn and Mo are lack badly.The contents of F,Se,As,Pb,Hg are rich.