Immobilization of heavy metals from soil by apatites was inhibited for the adding of LMOAs, and the ability of restrain was related to desorption efficiency of each LMOA.

• 低分子有机酸对磷矿粉固定土壤中重金属有抑制作用。四种低分子有机酸对磷矿粉固定土壤中重金属的抑制能力大小与各低分子有机酸对土壤中重金属解吸能力大小次序一致。