期刊论文

中文

农业环境科学学报

1672-2043

2018

37

2

259-267

10.11654/jaes.2017-1089

(2016YFD0800705-02):国家重点研发计划项目 (农办财函〔2016〕6号):农业部与财政部科研专项 (15C1408):湖南省教育厅科研项目 (2006180):湖南省重点学科建设项目 (2016YFD0800705-02):The National Key Research and Development Program of China (Ministry of Agriculture Union Letter 6[2016]):The Special Funds for Scientific Research of Ministry of Agriculture and Ministry of Finance (15C1408):The Research Foundation of Education Bureau of Hunan Province (2006180):The Key Discipline Construction Projects in Hunan Province

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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 contents ...