Heavy metals accumulation in a plant results in negative effect on physiological and biochemical processes going on in an organism. In this respect, the present article considers particular features of heavy metals (Cadmium - Cd, Cuprum - Cu, Zinc - Zn) on biomass accumulation by rice cultivars. Increase in heavy metals content results in significant slowing down the biomass accumulation in rice cultivars in the beginning of vegetation. Cadmium exerts significantly greater influence on biomass accumulation by Titan and AiSaule rice cultivars as compared to copper and zinc. Effect of heavy metals on biomass accumulation by rice cultivars is in the following order: cadmium> copper> zinc.
