Abstract: A pot experiment with maize variety Fuyou 1 showed that under the combined stress of lead and cadmium, the accumulation of cadmium in different parts of plant and at different development stages was in the order of root>down-leaf>stem>up-leaf>grain and of jointing stage>flowering stage>ripening stage. The cadmium content in plant was generally higher under combined stress than under single cadmium stress, but increased first while decreased when the lead content in soil increased from 0 to 540 mg·kg^-1.

Key words: Prorocentrum dentatum Stein, Prorocentrum donghaiense Lu, East China Sea