Effects of N fertilization and maize straw on the transformation and fate of labeled ((NH4)-N-15)(2)SO4 among three continuous crop cultivations
文献类型：期刊论文
| 作者 | He, Hongbo1; Lu, Caiyan1; Wang, Hongyan1; Chen, Huaihai2; Yuan, Lei1; Ma, Jian1; Shi, Yi1; Zhang, Xudong1; Chen, Xin1 |
| 刊名 | AGRICULTURAL WATER MANAGEMENT
 |
| 出版日期 | 2018-09-30 |
| 卷号 | 208页码:275-283 |
| 关键词 | Straw Application N-15 Labeling Transformation And Fate Of Fertilizer n Mollisol Soil |
| ISSN号 | 0378-3774 |
| DOI | 10.1016/j.agwat.2018.06.031 |
| 英文摘要 | The transformation and fate of fertilizer N applied to soil is particularly important for increasing N retention in soil-crop systems and minimizing N loss from agroecosystems. However, it is obscure how the transformation and fate of fertilizer N will be affected by N input rates and crop residue amendment. In present study, an outdoor experiment was conducted in Mollisols of Northeast China throughout three crop cultivations using N-15-labeled tracer techniques to evaluate the effects of N fertilization levels and maize straw application on the conversion of applied fertilizer N to newly synthesized organic N, recently fixed NH4+, and mineral N in soil-crop systems. Generally, six treatments were set up: no N fertilization (CK), application of only maize straw (M, 16.49 mg N kg(-1) soil), low N input levels (N-1, 44.64 mg N kg(-1) soil), N-1 plus maize straw (N-1 + M, 61.13 mg N kg(-1) soil), high N input levels (N-2, 89.28 mg N kg(-1) soil), and N-2 plus maize straw (N-2 + M, 105.77 mg N kg(-1) soil). The results showed that the majority of applied fertilizer N was rapidly transformed into newly synthesized organic N, followed by recently fixed NH4+. Compared with the N-1 and/or N-2 treatments, maize straw amendment in the N-1 +M and N-2 + M treatments significantly increased the residual amount of applied fertilizer N in soil by accelerating the conversion of fertilizer N to newly synthesized organic N or recently fixed NH4+. Among three crop cultivations, the percentages of recovery of applied fertilizer N in crops (PR-N-crop) and in soil (PR-N-soil) were averagely 61.1% and 15.8%, respectively, while the percentage of N loss (PL-N) was 23.1%. Applying maize straw significantly elevated the PR-N-crop and PR-N-soil but decreased the PL-N compared to those without maize straw. These results suggested that the application of maize straw with high C/N ratio is important to retain applied fertilizer N in soil-crop systems. Balancing carbon and nitrogen inputs in soil through proper combination of fertilizer N and maize straw will be a potentially practical management to increase fertilizer N recovery in crop and soil, and therefore reduce fertilizer N loss from crop-soil systems. |
| WOS研究方向 | Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000441856800026 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.72.129.5/handle/321005/121235]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Chen, Xin |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Liaoning, Peoples R China 2.Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37830 USA |
| 推荐引用方式 GB/T 7714 | He, Hongbo,Lu, Caiyan,Wang, Hongyan,et al. Effects of N fertilization and maize straw on the transformation and fate of labeled ((NH4)-N-15)(2)SO4 among three continuous crop cultivations[J]. AGRICULTURAL WATER MANAGEMENT,2018,208:275-283. |
| APA | He, Hongbo.,Lu, Caiyan.,Wang, Hongyan.,Chen, Huaihai.,Yuan, Lei.,...&Chen, Xin.(2018).Effects of N fertilization and maize straw on the transformation and fate of labeled ((NH4)-N-15)(2)SO4 among three continuous crop cultivations.AGRICULTURAL WATER MANAGEMENT,208,275-283. |
| MLA | He, Hongbo,et al."Effects of N fertilization and maize straw on the transformation and fate of labeled ((NH4)-N-15)(2)SO4 among three continuous crop cultivations".AGRICULTURAL WATER MANAGEMENT 208(2018):275-283. |
入库方式： OAI收割
来源：沈阳应用生态研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。