KMS Institute of soil and water conservation Chinese Academy of Sciences
| Effect of biochar application method on nitrogen leaching and hydraulic conductivity in a silty clay soil | |
| Shuailin Li1,2; Yongwang Zhang3,4; Weiming Yan1; Zhouping Shangguana1; Shangguan, ZP (reprint author), Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China. | |
| 文章类型 | Article |
| 2018 | |
| 发表期刊 | SOIL & TILLAGE RESEARCH
 |
| ISSN | 0167-1987 |
| 通讯作者邮箱 | shangguan@ms.iswc.ac.cn |
| 卷号 | 183页码:100-108 |
| 摘要 | Biochar is anticipated to be an effective option for mitigating nitrogen (N) leaching and improving the hydraulic characteristics of soil, particularly sandy soil. However, little attention has been paid to understanding the effect of biochar on N leaching and hydraulic conductivity (K) in fine-textured soil. Additionally, whether different biochar application methods have different effects on N leaching and K remains unclear. Therefore, our objective in this study is to determine the effects of biochar with different application methods on nitrate/ammonium leaching and K in silty clay soil. The three biochar application patterns were as follows: A, biochar was mixed into 0-10 cm of surface soil; B, biochar was mixed into 10-20 cm of subsurface soil; and C, biochar was mixed evenly into 0-20 cm of plow layer soil. In addition, biochar was added at three rates, namely, 1%, 2% and 4% (mass ratios), and a soil column without biochar addition served as the control (CK). Our results demonstrated that the choice of biochar application method significantly influenced N leaching and soil K and balance between the soil K and N leaching, particularly for nitrate. Additionally, the leaching of N in silty clay soil occurred mainly in nitrate form. Compared with the CK, all 1% biochar treatments increased nitrate leaching (except C1%, which showed no differences from the CK) and tended to decrease K. However, all 4% biochar treatments increased nitrate leaching due to a high K. All 2% biochar treatments significantly reduced nitrate leaching by 8.3-17.0%, and B2% significantly increased the saturated hydraulic conductivity (K-sat) of soil by 20.9%. Hence, the mixing of biochar at a rate of 2% into the subsurface soil effectively mitigated N leaching and increased K in silty clay soil. These findings could have some implications for the field application of biochar. For instance, the combination of subsurface biochar application with that of fertilizer to roots in orchards or with deep tillage in fields, which would mimic the B2% model, would yield multiple benefits, including lower costs. |
| 关键词 | Biochar Nitrate/ammonium Leaching Application Method Hydraulic Conductivity Silty Clay Soil |
| 学科领域 | Agriculture |
| DOI | 10.1016/j.still.2018.06.006 |
| 收录类别 | SCI |
| 出版地 | PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| 语种 | 英语 |
| WOS记录号 | WOS:000440119700011 |
| 出版者 | ELSEVIER SCIENCE BV |
| 项目资助者 | National Key Technology R&D Program of China [2016YFC0501605, 2015BAD22B01] ; National Key Technology R&D Program of China [2016YFC0501605, 2015BAD22B01] ; Doctor's Scientific Research Startup Project [YDBK2017-25] ; Doctor's Scientific Research Startup Project [YDBK2017-25] ; Open Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021402-1813] ; Open Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021402-1813] |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | sbir.nwafu.edu.cn/handle/361005/8177 |
| 专题 | 水保所科研产出--SCI_2018--SCI |
| 通讯作者 | Shangguan, ZP (reprint author), Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China. |
| 作者单位 | 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Soil & Water Conservat, Shaanxi 712100, Peoples R China 4.Minist Water Resources, Shaanxi 712100, Peoples R China 5.Yanan Univ, Coll Life Sci, Yanan 716000, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shuailin Li,Yongwang Zhang,Weiming Yan,et al. Effect of biochar application method on nitrogen leaching and hydraulic conductivity in a silty clay soil[J]. SOIL & TILLAGE RESEARCH,2018,183:100-108. |
| APA | Shuailin Li,Yongwang Zhang,Weiming Yan,Zhouping Shangguana,&Shangguan, ZP .(2018).Effect of biochar application method on nitrogen leaching and hydraulic conductivity in a silty clay soil.SOIL & TILLAGE RESEARCH,183,100-108. |
| MLA | Shuailin Li,et al."Effect of biochar application method on nitrogen leaching and hydraulic conductivity in a silty clay soil".SOIL & TILLAGE RESEARCH 183(2018):100-108. |
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