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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (35): 176-180.doi: 10.11924/j.issn.1000-6850.casb15060150

所属专题： 土壤重金属污染

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

不同钝化材料对重金属污染土壤的钝化效果研究

康宏宇,林健,张乃明,包立,刘炳森   

  1. 云南农业大学,云南农业大学,云南农业大学,云南农业大学,云南农业大学
  • 收稿日期:2015-06-30 修回日期:2015-11-26 接受日期:2015-08-13 出版日期:2015-12-18 发布日期:2015-12-18
  • 通讯作者: 张乃明
  • 基金资助:
    ：云南省社会发展科技计划项目“云南藏区矿产开发对环境的影响及防控技术应用研究”(2010CA010)；沘江流域农田土壤重金属污染修复关键技术研究及应用计划类别:科技惠民计划(2014RA018)。

Passivation Effect of Different Passive Materials on Heavy Metal Polluted Soil

林健,, and   

  • Received:2015-06-30 Revised:2015-11-26 Accepted:2015-08-13 Online:2015-12-18 Published:2015-12-18

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摘要： 土壤重金属污染已成为不容忽视的突出环境问题,筛选高效低成本的钝化材料十分迫切。选择有机肥、泥炭、沸石、硅藻土、石灰及不同材料的生物炭等钝化材料,采用室内模拟试验的方法,研究了不同材料不同添加用量的钝化剂对土壤中重金属Cu、Zn、Pb、Cd的钝化效果。结果表明：(1)石灰和沸石均能有效地降低地土壤中Cu、Pb和Zn浸提态含量,其中当石灰用量达到50g/kg时,Cu、Pb、Zn浸提态含量分别降低了61.75 %、25.57 %、38.45%；当沸石用量达到50g/kg时,土壤中Cu、Zn、Pb浸出态含量较对照处理分别降低了34.00 %、16.29 %和31.20%。(2)有机肥和泥炭能有效降低Pb 和Cu的浸出态含量,用量为50g/kg时,有机肥和泥炭对土壤中Pb和Cu的浸出量较对照分别减少了27.64%和33.58%。(3)锯木屑-生物炭和商品-生物炭用量达到50g/kg时,土壤中Cd浸出态含量较对照处理分别降低了21.46%和19.12%。

关键词: 干旱胁迫, 干旱胁迫, 荷叶铁线蕨, 扇叶铁线蕨, 形态特征, 生理响应

Abstract: Heavy metal pollution of soil has become a major environmental problem, it is extremely urgent to sift efficient and low- cost passivation materials. The passivation effects of different passivation materials (organic fertilizer, peat, zeolite, diatomite, lime and biochar of different materials) and different application amounts on Cu, Zn, Pb and Cd in soil were studied by laboratory simulation test. The results showed that (1) lime and zeolite could effectively reduce the extraction contents of Cu, Pb and Zn in soil by 61.75%, 25.57%, 38.45%and34.00%,16.29%,31.20%respectivelywhentheapplicationamountsoflimeandzeolitewere 50g/kg; (2) organic fertilizer and peat could reduce the extraction contents of Pb and Cu, when the application amounts were 50 g/kg, the extraction contents of Pb and Cu decreased by 27.64% and 33.58% respectively; (3) when the application amounts of sawdust-biochar and commodity-biochar were 50g/kg, the extraction contents of Cd in soil decreased by 21.46% and 19.12% respectively.