Cd-Pb has a synergistic effect on the Cd uptake of cole, but an antagonistic effect on its Pb uptake. Cd-Pb-Cu compound effect is complex.

• CdPb对油菜吸收Cd具有协同作用；对油菜吸收Pb却具有拮抗作用；Cd-Pb-Cu复合作用的影响则比较复杂.