农业环境科学学报2011，Vol.30Issue(12)：2491-2495,5.
秸秆还田对稻田渗漏液DOC含量及土壤Cd活度的影响
Effect of Wheat Straw Return on DOC in Percolating Water and Cd Activity in Rice Soil
摘要
Abstract
A pot experiment was carried out to study the effect of straw return on dissolved organic carbon (DOC) in percolating water and Cd activity in a polluted rice soil. The results showed that DOC concentration in percolating water in rice soil increased with the increase of the amount of straw returned. After rice harvest, total and effective Cd in the soil decreased(or decreased significanT1y in some treatments) with the amount of straw added to the soil, due to enhanced loss of Cd through percolating water by addition of wheat straw. Under experimental conditions, with the increase of the amount of straw, Cd concentration and accumulation in rice plants, increased firsT1y and then decreased. Cd concentration and accumulation in plants in 0.5% straw returning treatment were the highest, which were 45.10 mg·kg-1, 1 858.1 μg·pot-1 respectively. Straw returning elevated DOC concentration in percolating water and the activity of soil Cd in rice field.关键词
秸秆还田/渗漏液/DOC/CdKey words
Straw returning/ percolating water/ DOC/ Cd分类
资源环境引用本文复制引用
柏彦超,陈国华,路平,陶天云,封克,单玉华..秸秆还田对稻田渗漏液DOC含量及土壤Cd活度的影响[J].农业环境科学学报,2011,30(12):2491-2495,5.基金项目
国家重点基础研究发展规划项目(2007CB109303) （2007CB109303）
江苏省环境材料与环境工程重点实验室开放基金资助项目 （）
