Abstract:

Based on the Chengdu economic zone multi-purpose geochemical survey results,the content of the Cd element in the staple crops-rice, corn and wheat seed and the Cd in soil are discussed.The results showed that the contents of Cd in those are wheat>rice> corn. pH in soil has great influence on the transfer of Cd element in the soil and accumulation of Cd element in the staple crops. Cd element in acid soil is feasible to enter plants and accumultes there,so it is harmful to environmental ecology.

Key words: large amount crop, agricultural geology, geochemistry, Chengdu economic zone, ecological