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研究了2个固化剂处理对玉米各部位吸收铅、镉的影响,探讨了2种改良材料在重金属中度污染土壤上的修复效果,以期为重金属复合污染石灰性土壤的安全利用提供科学依据。选用膨润土和磷酸二氢钾为固化剂材料,在中度污染耕地上进行田间试验。结果显示,膨润土与磷酸二氢钾配施可使玉米子粒、茎叶和根中铅含量分别降低37.22%、40.18%、34.06%,镉含量分别降低
The effects of two curing agents on the absorption of lead and cadmium in various parts of corn were studied. The restoration effects of two kinds of improved materials on moderately polluted soils were discussed in order to provide a scientific basis for the safe utilization of limestone soils contaminated by heavy metals. Bentonite and potassium dihydrogen phosphate were selected as the hardener materials, and field experiments were conducted on moderately-contaminated farmland. The results showed that with the combination of bentonite and potassium dihydrogen phosphate, the contents of lead in maize kernels, stems and leaves decreased by 37.22%, 40.18% and 34.06%, respectively, while the contents of cadmium decreased