Effects of Copper and Cadmium Pollution on Elsholtzia Splendens Seed Germination

The effects of the copper and cadmium contamination on Elsholtzia Splendens was studied in this paper.The results showed that seed germination rate first rose and then dropped with the concentration of Cu²⁺ increasing,and the maximum germination rate appeared in the 20mg/L Cu²⁺ concentration.However,the prolongation of root and the seedling heights were restrained obviously under the copper and cadmium stress.According to the combined effect of indicators,there was synergy between copper and cadmium under compound condition.