Effects of different irrigation methods on micro-environments and root distribution in winter wheat fields
文献类型：SCI/SSCI论文
| 作者 | Lu G. H.; Song, J. Q.; Bai, W. B.; Wu, Y. F.; Liu, Y.; Kang, Y. H. |
| 发表日期 | 2015 |
| 关键词 | border irrigation root profile distribution sprinkler irrigation surface drip irrigation field micro-environment winter wheat north china plain sprinkler irrigation soil-temperature water growth biomass transpiration microclimate frequency |
| 英文摘要 | The irrigation method used in winter wheat fields affects micro-environment factors, such as relative humidity (RH) within canopy, soil temperature, topsoil bulk density, soil metric potential, and soil nutrients, and these changes may affect plant root growth. An experiment was carried out to explore the effects of irrigation method on micro-environments and root distribution in a winter wheat field in the 2007-2008 and 2008-2009 growing seasons. The results showed that border irrigation (BI), sprinkler irrigation (SI), and surface drip irrigation (SDI) had no significant effects on soil temperature. Topsoil bulk density, RH within the canopy, soil available N distribution, and soil matric potential were significantly affected by the three treatments. The change in soil matric potential was the key reason for the altered root profile distribution patterns. Additionally, more fine roots were produced in the BI treatment when soil water content was low and topsoil bulk density was high. Root growth was most stimulated in the top soil layers and inhibited in the deep layers in the SDI treatment, followed by SI and BI, which was due to the different water application frequencies. As a result, the root profile distribution differed, depending on the irrigation method used. The root distribution pattern changes could be described by the power level variation in the exponential function. A good knowledge of root distribution patterns is important when attempting to model water and nutrient movements and when studying soil-plant interactions. |
| 出处 | Journal of Integrative Agriculture |
| 卷 | 14 |
| 期 | 8 |
| 页 | 1658-1672 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2095-3119 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38468]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Lu G. H.,Song, J. Q.,Bai, W. B.,et al. Effects of different irrigation methods on micro-environments and root distribution in winter wheat fields. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。