It was concluded that sufficient supply of sulfate could improve rice tolerance to cadmium stress but also enhance cadmium accumulation in the leaf.

Prepared copper sulfate, sponge cadmium and zinc sulfate from abandoned mash of zincmaking plants following the step of oxidization, soaking in acid, neutralization sedimentation, replacement, etc…

Reagent-grade cadmium chloride, copper chloride, and zinc sulfate were used to conduct all studies.