| 长期施用生物炭对土壤中Cd吸附及生物有效性的影响 |
| |
| 引用本文： | 张莹,吴萍,孙庆业,孙倩,汪玉,王慎强,王玉军. 长期施用生物炭对土壤中Cd吸附及生物有效性的影响[J]. 农业环境科学学报, 2020, 39(5): 1019-1025 |
| |
| 作者姓名： | 张莹 吴萍 孙庆业 孙倩 汪玉 王慎强 王玉军 |
| |
| 作者单位： | 安徽大学资源与环境工程学院,合肥 230000;中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京210008;安徽大学矿山生态修复工程实验室,合肥 230000;中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京210008;安徽大学资源与环境工程学院,合肥 230000;安徽大学矿山生态修复工程实验室,合肥 230000;中国科学院土壤与农业可持续发展国家重点实验室,南京土壤研究所,南京 210008 |
| |
| 基金项目： | 国家自然科学基金项目（21537002， 41771276） |
| |
| 摘 要： | 考察了Cd在长期施用生物炭农田土壤上的吸附及解吸过程,并结合大田试验稻麦轮作结果探究了长期施用生物炭对土壤中Cd有效性的影响。实验结果表明,与对照农田土壤相比,生物炭的施入量越高,土壤对Cd的吸附固定能力越强,这主要是由于生物炭的加入可显著增加农田土壤的pH、阳离子交换量(CEC)和有机质含量。大田数据显示生物炭可降低土壤中Cd的有效性,抑制土壤中的Cd向稻麦中迁移。
|
| 关 键 词： | 长期施用 生物炭 有效态 Cd含量 水稻 小麦 |
| 收稿时间： | 2020-01-14 |
Effect of long-term application of biochar on Cd adsorption and bioavailability in farmland soils |
| |
| ZHANG Ying,WU Ping,SUN Qing-ye,SUN Qian,WANG Yu,WANG Shen-qiang and WANG Yu-jun. Effect of long-term application of biochar on Cd adsorption and bioavailability in farmland soils[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2020, 39(5): 1019-1025 |
| |
| Authors: | ZHANG Ying WU Ping SUN Qing-ye SUN Qian WANG Yu WANG Shen-qiang WANG Yu-jun |
| |
| Affiliation: | School of Resources and Environmental Engineering, Anhui University, Hefei 230000, China;Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Mine Ecological Restoration Engineering Laboratory of Anhui University, Hefei 230000, China,Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China,School of Resources and Environmental Engineering, Anhui University, Hefei 230000, China;Mine Ecological Restoration Engineering Laboratory of Anhui University, Hefei 230000, China,Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China,State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China,State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China and Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China |
| |
| Abstract: | This study investigated the adsorption and desorption of Cd on farmland soils with long-term application of biochar and explored the effect of biochar on the bioavailability of Cd in the soil in combination with long-term field trials of rice and wheat rotation. The results of experiments showed that compared with the control farmland soil, the larger the amount of biochar applied, the stronger the Cd adsorption and fixation capacity of the corresponding treated soil had. This was mainly due to the fact that the addition of biochar could increase the pH, cation exchange capacity, and organic matter content of the farmland soil, thereby reducing the exchangeable content of Cd in the soil and further inhibiting the migration of Cd from the soil into rice and wheat. The results provide theoretical guidance and technical support for Cd-contaminated soil remediation. |
| |
| Keywords: | long-term application biochar bioavailability Cd content rice wheat |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《农业环境科学学报》浏览原始摘要信息 |
|
点击此处可从《农业环境科学学报》下载全文 |
|
