The absorption,accumulation and distribution of copper(Cu) in different potato varieties(Zihuabai,Longshu 3 and Atlantic) were studied.The average copper content in the whole plant of three varieties was 11.62 mg / kg.With the growth stage advancing,the amount of Cu uptake in the leaves of Longshu 3 was accumulated in a S-curve pattern,while the Cu in the leaves of Zihuabai and Atlantic was accumulated in a parabolic curve pattern.The amount of Cu uptake in the stems of Atlantic was changed a little bit,but...