Elevated O-3 decreased N rhizodeposition of spring wheat and its availability to subsequent buckwheat
文献类型：期刊论文
| 作者 | Cao, Yanhong1,2; Lu, Caiyan1; Quan, Zhi1; Wang, Yongzhuang1; Huang, Bin1; Shi, Yi1 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 162页码:18-25 |
| 关键词 | Elevated O-3 n Rhizodeposition Split-root Method N-15 Labeling Spring Wheat |
| ISSN号 | 0167-1987 |
| DOI | 10.1016/j.still.2016.04.015 |
| 英文摘要 | Nitrogen derived from rhizodeposition (NdfR) is an important N source both, for the current and subsequent crops in soil-plant system. However, few studies have focused on the effects of elevated O-3 concentration on NdfR and its availability to subsequent crops. A pot experiment was conducted to investigate the effects of elevated O-3 on spring wheat NdfR arid its availability to buckwheat in open-top chambers (OTCs), where spring wheat was labeled with N-15 urea by using a split-root method under ambient (Control; CK) and two O-3 concentration-elevated conditions (60 +/- 5 and 110 +/- 5 nmol mol(-1), respectively), and buckwheat was cultivated in the soil contained rhizodeposited N-15 compounds after spring wheat harvest. The results showed that O-3 stress significantly decreased the quantity of spring wheat N-15 rhizodeposition ((15)NdfR) by 24-48% compared to CK. Spring wheat (15)NdfR accounted for on average 8-15% of the total plant N-15 (N-15 assimilation in plant material +(15)NdfR; (TN)-N-15), and 78-95% of the total belowground parts of plant N-15 (root N-15 +(15)NdfR; BGP-N-15) during plant growth. N recovery of buckwheat plant accounted for 12-25% of spring wheat N-15 deposited into soil, and was significantly decreased by approximately one half under the two O-3 level-elevated conditions. These results indicate that N rhizodeposition represents a significant pool in N dynamics of soil-plant system, and the projected future O-3 concentration might induce adverse effects on NdfR and its availability to subsequent crops to influence N transformation and cycling in soil-plant system. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000377731400003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.72.129.5/handle/321005/122736]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Lu, Caiyan; Shi, Yi |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Yanhong,Lu, Caiyan,Quan, Zhi,et al. Elevated O-3 decreased N rhizodeposition of spring wheat and its availability to subsequent buckwheat[J]. SOIL & TILLAGE RESEARCH,2016,162:18-25. |
| APA | Cao, Yanhong,Lu, Caiyan,Quan, Zhi,Wang, Yongzhuang,Huang, Bin,&Shi, Yi.(2016).Elevated O-3 decreased N rhizodeposition of spring wheat and its availability to subsequent buckwheat.SOIL & TILLAGE RESEARCH,162,18-25. |
| MLA | Cao, Yanhong,et al."Elevated O-3 decreased N rhizodeposition of spring wheat and its availability to subsequent buckwheat".SOIL & TILLAGE RESEARCH 162(2016):18-25. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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