首页  |  本刊简介  |  编委会  |  投稿须知  |  订阅与联系  |  微信  |  出版道德声明  |  Ei收录本刊数据  |  封面
土壤调理剂对镉污染稻田修复效果
摘要点击 1973  全文点击 781  投稿时间:2019-05-08  修订日期:2019-06-02
查看HTML全文 查看全文  查看/发表评论  下载PDF阅读器
中文关键词  土壤调理剂  理化性质  镉污染  糙米  修复效果
英文关键词  soil conditioner  physical and chemical properties  cadmium pollution  brown rice  remediation
作者单位E-mail
周利军 江西省红壤研究所, 国家红壤改良工程技术研究中心, 进贤 331717 huoe861200@163.com 
武琳 江西省红壤研究所, 国家红壤改良工程技术研究中心, 进贤 331717  
林小兵 江西省红壤研究所, 国家红壤改良工程技术研究中心, 进贤 331717  
王惠明 江西省农业生态与资源保护站, 南昌 330046  
刘晖 江西省农业生态与资源保护站, 南昌 330046  
张鸿燕 江西省农业生态与资源保护站, 南昌 330046  
胡敏 萍乡市农业局, 萍乡 337000  
石利萍 萍乡市农业局, 萍乡 337000  
张云 天工方圆建设集团, 新余 338000  
黄欠如 江西省红壤研究所, 国家红壤改良工程技术研究中心, 进贤 331717 qianruhuang@163.com 
中文摘要
      选用森美思、CCT01、矿物质和特贝钙这4种土壤调理剂,在萍乡地区受镉(Cd)污染稻田开展大田控镉试验,探讨4种调理剂对土壤pH、容重、有机质、速效养分、质地和微团聚体等理化性质及土壤有效态Cd和糙米Cd含量的影响.研究结果表明与对照相比,添加土壤调理剂提高了土壤pH值、容重和阳离子交换量;其中森美思和CCT01土壤调理剂使土壤粉粒和黏粒增加,砂粒减少,而矿物质和特贝钙土壤调理剂使粉粒和黏粒减少,砂粒增加;除CCT01土壤调理剂外,施用土壤调理剂增加了大粒级团聚体,而减少小粒级微团聚体.土壤调理剂对土壤理化性质的影响促进污染土壤中的Cd由活性高的形态向活性低的形态转化,从而降低了土壤有效态Cd含量(5.21%~34.78%)和糙米中Cd含量(51.39%~68.06%).相关性分析表明,糙米Cd含量与土壤有效态Cd和有效磷呈显著的正相关关系,而与土壤pH和容重呈显著的负相关关系.从土壤和糙米降镉率及对理化性质的影响考虑,特贝钙土壤调理剂修复效果最佳,其次是森美思和矿物质土壤调理剂.
英文摘要
      Four soil conditioners, SAMMNS, CCT01, Mineral, and Tebeigai were selected for this study. The effects of the four conditioners on soil pH, bulk density, organic matter, available nutrients, texture, microaggregates, Cd available in soil, and Cd content in brown rice were investigated using field-controlled cadmium tests conducted in cadmium-contaminated paddy fields in Pingxiang. The results showed that compared to the control, soil conditioners could increase pH, bulk density, and cation exchange capacity in soil. SAMMNS and CCT01 soil conditioners increased the amount of silt and clay, but that of sand decreased, whereas the Mineral and Tebeigai soil conditioners decreased silt and clay, and sand increased. In addition to the CCT01 soil conditioner, the application of soil conditioners increased large-scale agglomerates and reduced small-scale microaggregates. The effects of soil conditioners on soil physical and chemical properties promoted the conversion of Cd from contaminated soil from high activity to low activity, which reduced available Cd content in soil (5.21%-34.78%) and Cd content in brown rice (51.39%-68.06%). Correlation analysis showed that Cd content in brown rice was significantly positively correlated with available Cd and available phosphorus in soil, whereas it was negatively correlated with pH and bulk density in soil. Considering the effects of soil and brown rice on cadmium reduction and physicochemical properties, Tebeigai soil conditioner exhibited the best repair effects, followed by SENMES and Mineral soil conditioner.

您是第51739985位访客
主办单位:中国科学院生态环境研究中心 单位地址:北京市海淀区双清路18号
电话:010-62941102 邮编:100085 E-mail: hjkx@rcees.ac.cn
本系统由北京勤云科技发展有限公司设计  京ICP备05002858号-2