期刊论文

Effects of biochar on the properties of soil lightly contaminated with lead in Southern Hunan and bioaccumulation and translocation of lead in rice plants

中文

农业环境科学学报

1672-2043

2018

37

2

259-267

10.11654/jaes.2017-1089

作者简介：徐继敏（1992—），女，湖北孝感人，硕士研究生，主要从事土水污染与控制研究。E-mail：2474180185@qq.com * 通信作者：张 平 E-mail：zhyp2008@163.com 基金项目：国家重点研发计划项目（2016YFD0800705-02）；农业部与财政部科研专项（农办财函〔2016〕6 号）；湖 南 省 教 育厅科研项目（15C1408）；湖 南 省 重 点 学科建设项目（2006180） Project supported：The National Key Research and Development Program of China（2016YFD0800705-02）; The Special Funds for Scientific Research of Ministry of Agriculture and Ministry of Finance（Ministry of Agriculture Union Letter No.6 [2016]）; The Research Foundation of Education Bureau of Hunan Province（15C1408）; The Key Discipline Construction Projects in Hunan Province（2006180）

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为探讨生物质炭对湘南矿区附近轻度Pb污染土壤的改良效果,通过盆栽试验,研究不同施炭条件(0、0.5%、1.0%、2.0%)对水稻土壤性质及Pb在水稻中的累积转运影响。结果表明:施用玉米秸秆炭能使土壤pH值提高0.50~0.67个单位,有机质增加6.9%~25.1%,CEC升高24.7%~41.3%,土壤Pb的毒性浸出量降低4.4%~25.9%,且Pb的毒性浸出量与有机质、CEC分别呈极显著和显著性负相关;在相同施炭条件下,上述各指标在水稻生长的幼苗期和成熟期时存在差异,土壤pH值和有机质幼苗期高于成熟期, CEC和Pb的毒性浸出量幼苗期低于成熟期。水稻各部位中,根表铁膜对Pb的累积量最多,谷壳对Pb的转运能力最大,施用玉米秸秆炭能增加水稻根...

The objective of the present study was to investigate the remediation effect of biochar derived from corn straw (BC) at application rates of 0, 0.5%, 1.0%, and 2.0%on the properties of lead-contaminated soil and bioaccumulation and translocation of lead in rice plants by means of a pot experiment. The results showed that application of BC increased soil pH values by 0.50∼0.67, soil organic matter (OM) by 6.9%∼25.1%, and soil cation exchange capacity (CEC) by 24.7%∼41.3% and decreased contents of soil TCLP-extractable Pb by 4.4%∼ 25.9%. The ...