通过室内盆栽实验，研究了粉煤灰、沸石、腐殖酸和保水剂等功能性材料对玉米、大豆吸收重金属Pb、Cd的影响。结果表明， 供试功能性材料能有效降低玉米、大豆对重金属污染土壤中重金属Pb、Cd的吸收，复合材料效果优于单个材料，复合材料以粉煤灰+保水剂+腐殖酸+沸石、粉煤灰+保水剂+腐殖酸为最佳。

In this study， the effects of functional materials such as fly ash， zeolite， humic acid and water retaining agent on the absorption of heavy metals Pb and Cd in maize and soybean are studied by pot experiments. The result shows that the tested functional materials can effectively reduce the absorption of corn， soybean on heavy metals in Pb contaminated soil and Cd， the effect is better than that of single composite materials， composite materials with fly ash + water retention agent + humic acid + zeolite， fly ash + water retention agent + humic acid is the best insurance agent.

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国土资源部公益性行业科研专项“西北干旱区窑洞和地坑院村庄土地复垦整理技术集成与示范项目” (201111015-02)。