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中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (30): 96-100.doi: 10.11924/j.issn.1000-6850.casb17080016

所属专题： 土壤重金属污染； 水稻

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

铁基复合土壤调理剂对三种不同污染程度土壤中水稻糙米吸收积累Cd的影响

刘晓月,张 燕   

  1. 航天凯天环保科技股份有限公司,航天凯天环保科技股份有限公司
  • 收稿日期:2017-08-03 修回日期:2018-09-28 接受日期:2017-09-19 出版日期:2018-10-31 发布日期:2018-10-31
  • 通讯作者: 张 燕
  • 基金资助:
    农业部、财政部专项“重金属污染耕地修复治理新产品新技术研究”(20160418)；农业部、财政部专项“灌溉水镉污染净化与重金属污染耕 地修复研究”（农业部、财政部专项2014028）；湖南省政府重大专项“稻米镉污染控制技术研究与示范”(20130101)。

Effects of Iron-based Compound Soil Conditioner on Cd Absorption and Accumulation in Rice from Three Kinds of Cd Polluted Soils

  • Received:2017-08-03 Revised:2018-09-28 Accepted:2017-09-19 Online:2018-10-31 Published:2018-10-31

摘要： 为了研究铁基复合土壤调理剂对不同污染类型土壤pH值、有效态Cd含量及水稻糙米产量、Cd含量的影响,探讨铁基复合土壤调理剂降低土壤Cd生物有效性的机理,【方法】本文选取酸性、弱酸性及中性三种Cd 污染稻田土壤,以150 kg/亩施用量施加铁基复合土壤调理剂进行田间小区试验。试验结果表明,铁基复合土壤调理剂均能增加土壤pH值,降低土壤有效态Cd含量,降低Cd的生物有效性系数,铁基复合土壤调理剂对株洲县中性稻田土降Cd效果最佳；土壤调理剂亦能提高水稻糙米产量,降低糙米中Cd含量,株洲县及湘潭县水稻糙米中Cd含量达到国家食品卫生标准规定。研究结果可为镉污染土壤的治理与水稻安全生产提供理论依据和数据支持。

关键词: 罗非鱼养殖意愿, 罗非鱼养殖意愿, 影响因素, 实证研究, Logit模型

Abstract: To study the effect of iron-based compound soil conditioner on soil pH value, soil available Cd content, and yield and Cd content of rice in different polluted soil types, the mechanism of iron- based compound soil conditioner to reduce soil Cd bioavailability was discussed. In this paper, acid, weak acid and neutral Cd polluted soil were selected, with 2250 kg/hm2 application rate of iron- based compound soil conditioner for field plot test. The results showed that the iron-based compound soil conditioner could increase soil pH value, reduced soil available Cd content and the bioavailability coefficient of Cd. The iron-based compound soil conditioner had the best Cd reducing effect on the neutral paddy soil in Zhuzhou. The soil conditioner could also improve the yield of brown rice and reduce Cd content in brown rice. The content of Cd in brown rice of Zhuzhou and Xiangtan reached the national food hygiene standard. The results could provide a theoretical basis and data support for the treatment of cadmium contaminated soil and safe production of rice.