农业环境科学学报2012，Vol.31Issue(10)：1927-1932,6.
秸秆炭化后还田对不同镉污染农田土壤中镉生物有效性和赋存形态的影响
Phytoavailability and Chemical Speciation of Cd in Different Cd-contaminated Soils Influenced by Bio-char Incorporation
摘要
Abstract
Greenhouse study was conducted to investigate the phytoavailability and chemical speciation of Cd in two Cd-contaminated soils influenced by bio-char incorporation and to assess the possible remediation by bio-char return to soil. Results showed that bio-char incorporation significantly decreased shoot dry weight but it had no effect on Cd concentration and uptake of maize in Cd-contaminated soil. Bio-char incorporation also had no effect on shoot dry weight of maize in artificial Cd-contaminated soil but it significantly increased Cd concentration and uptake of maize with Cd-containing bio-char incorporation. The DTPA extractable Cd concentration increased with the incorporation of Cd-containing bio-char in Cd-contaminated soil. With bio-char incorporating, the water soluble and exchangeable Cd concentration in soil decreased significantly and concentrations of organic bound and carbonate Cd increased significantly in artificial Cd-contaminated soil. While, the water soluble and exchangeable Cd concentration in soil increased significantly with Cd-containing bio-char incorporated into the Cd-contaminated soil. Bio-char incorporation did not decrease the phytoavailability of Cd in both of the two Cd-contaminated soils.关键词
秸秆黑炭/镉污染土壤/形态/生物有效性Key words
bio-charincorporation/ Cd contaminated soil/ speciation/ bioavailability分类
资源环境引用本文复制引用
张晶,苏德纯..秸秆炭化后还田对不同镉污染农田土壤中镉生物有效性和赋存形态的影响[J].农业环境科学学报,2012,31(10):1927-1932,6.基金项目
国家自然科学基金(40971261) （40971261）
公益性行业(农业)科研专项(200903015) （农业）
