For Zn, its absorption coefficient is 0.51 and transmission coefficient is 1.55 and for Cd its absorption coefficient is 0.41 and its transmission coefficient is 0.48 when it is under the Zn, Cd combined pollution soil.

• 在锌、镉复合污染下；苗木对锌吸收系数为0.；51；转运系数为1