Effects of salinity and fertigation practice on cotton yield and N-15 recovery
文献类型：期刊论文
| 作者 | Hou, Zhenan; Chen, Weiping; Li, Xiao; Xiu, Lin; Wu, Laosheng |
| 刊名 | AGRICULTURAL WATER MANAGEMENT
 |
| 出版日期 | 2009-10 |
| 卷号 | 96期号:10页码:1483-1489 |
| 关键词 | Drip irrigation Soil salinity Fertigation strategy N-15 recovery Cotton |
| 中文摘要 | The purpose of optimal water and nutrient management is to maximize water and fertilizer use efficiency and crop production, and to minimize groundwater Pollution. In this study, field experiments were conducted to investigate the effect of soil salinity and N fertigation strategy on plant growth, N uptake, as well as plant and soil N-15 recovery. The experimental design was a 3 x 3 factorial with three soil salinity levels (2.5, 6.3. and 10.8 dS m(-1)) and three N fertigation strategies (N applied at the beginning, end, and in the middle of an irrigation cycle). Seed cotton yield, dry matter, N uptake, and plant N-15 recovery significantly increased as soil salinity level increased from 2.5 to 6.3 dS m(-1), but they decreased markedly at higher soil salinity of 10.8 dS m(-1). Soil N-15 recovery was higher under soil salinity of 10.8 dS m(-1) than those under soil salinity of 6.3 dS m(-1), but was not significantly different from that under soil salinity of 2.5 dS m(-1). The fertigation strategy that nitrogen applied at the beginning of an irrigation cycle had the highest seed cotton yield and plant N-15 recovery, but showed higher potential loss of fertilizer N from the root zone. While the fertigation strategy of applying N at the end of an irrigation cycle tended to avoid potential N loss from the root zone, it had the lowest cotton yield and nitrogen use efficiency. Total N-15 recovery was not significantly affected by soil salinity, fertigation strategy, and their interaction. These results suggest that applying nitrogen at the beginning of an irrigation cycle has an advantage on promoting yield and fertilizer use efficiency, therefore, is an agronomically efficient way to provide cotton with fertilizer N under the given production conditions. (C) 2009 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000268698200014 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21380]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Hou, Zhenan,Chen, Weiping,Li, Xiao,et al. Effects of salinity and fertigation practice on cotton yield and N-15 recovery[J]. AGRICULTURAL WATER MANAGEMENT,2009,96(10):1483-1489. |
| APA | Hou, Zhenan,Chen, Weiping,Li, Xiao,Xiu, Lin,&Wu, Laosheng.(2009).Effects of salinity and fertigation practice on cotton yield and N-15 recovery.AGRICULTURAL WATER MANAGEMENT,96(10),1483-1489. |
| MLA | Hou, Zhenan,et al."Effects of salinity and fertigation practice on cotton yield and N-15 recovery".AGRICULTURAL WATER MANAGEMENT 96.10(2009):1483-1489. |
入库方式： OAI收割
来源：生态环境研究中心
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