关键词: Cd, Pb, 叶菜, 富集, 影响

Abstract: For the study of different concentrations of heavy metals Pb, Cd in different parts of leaf vegetables（root, stem and leaf） of enrichment, and the influence on the growth condition of leafy vegetables, the soil culture pot experiment was conducted. The results showed that when adding different concentrations of heavy metals in soil, the three kinds of enrichment of Pb, Cd in the different parts of leafy vegetables were characterized by increased with the increase of concentration added in soil increased. When heavy metals of the same concentration were added to the soil, the enrichment of Pb in the three leafy vegetables was as followsSpinach>moss vegetables>rape, leaf>root>stem; The enrichment of Cd in three leafy vegetables was as followsSpinach>rape>moss vegetables, root>stem>leaves. When the heavy metals Pb and Cd in the soil exceeds a certain concentration, the germination rate and germination time of leafy vegetables will be affected, and the leaf vegetables will wilt, turn yellow, etc., make them wilt, while the high concentration of Cd will also cause spots in the three leaf vegetables.

Key words: Cd, Pb, leafy vegetables, enrichment, effect