摘要
原始土壤中镉以交换态所占比例最高,其次是残渣态,而以有机结合态最低,往土壤中施入海泡石等改良剂以后,交换态镉显著下降,残渣态镉明显上升,还可以使植株体内的镉含量明显降低。
In the initial soil,Cd content in the form of exchange state accounts for the most proportion,the second is the Cd content in the form of residue state,and the Cd content in the form of organic combination is the lowest,after applying such modifier as the meerschaum in the soil,the Cd content in the form of exchange state significantly decreased,the Cd content in the form of residue increased substantially,and the Cd content in the plant can be reduced significantly
