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中国农学通报 ›› 2015, Vol. 31 ›› Issue (15): 38-43.doi: 10.11924/j.issn.1000-6850.casb14120201

所属专题: 玉米

• 农学 农业基础科学 • 上一篇    下一篇

不同固化剂对玉米吸收铅镉的影响

景鑫鑫,李真理,程海宽,孙晓雪,杨素勤,张 彪   

  1. 河南农业大学资源与环境学院,济源市环境保护局,河南农业大学资源与环境学院,河南农业大学资源与环境学院,河南农业大学资源与环境学院,河南农业大学资源与环境学院
  • 收稿日期:2014-12-30 修回日期:2015-02-08 接受日期:2015-03-09 出版日期:2015-06-02 发布日期:2015-06-02
  • 通讯作者: 张 彪
  • 基金资助:
    河南省教育厅科学技术研究重点项目“几种野生植物对镉铅胁迫的适应机理研究”(14B210027)。

Effect of Different Stabilizers on Cadmium and Lead Uptake by Maize

  • Received:2014-12-30 Revised:2015-02-08 Accepted:2015-03-09 Online:2015-06-02 Published:2015-06-02

摘要: 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籽粒、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24.53%、5.85%、14.82%。2种固化剂处理均能增加玉米的株高、产量和地上部干物质量,降低玉米对铅的富集系数和对镉的转运系数及富集系数,膨润土与磷酸二氢钾配施还可降低玉米对铅的转运系数。可得出结论,在重金属复合污染石灰性土壤上,膨润土与磷酸二氢钾配施一定程度上可作为理想的修复材料。

关键词: 晒晾烟, 晒晾烟, 什邡市, 气候因子

Abstract: In order to provide scientific basis for the utilization of calcareous soil polluted by cadmium and lead, the author studied the influence of two stabilizers on the uptake of cadmium and lead by maize and their remediation effects on moderately-polluted soil. Bentonite and KH2PO4 were selected as stabilizers and field experiment was conducted in moderately- polluted soil. The results showed that bentonite combined with KH2PO4 could reduce the concentration of lead in grains, stem leaf and roots by 37.22%, 40.18% and 34.06%, respectively. For cadmium concentration, those values were 24.53%, 5.85% and 14.82%, respectively. Both stabilizer-treatments could increase plant height, yield and dry biomass of aboveground part and decrease bioconcentration factor of lead and transport factor of cadmium. In addition, transport factor of lead also decreased in the treatment of bentonite combined with KH2PO4. Thus, bentonite combined with KH2PO4 could be used as an ideal repair material in calcareous-soil contaminated by heavy metals.