| 盐分胁迫条件下冬小麦根系吸水模型的构建与验证 |
| |
| 引用本文： | 王利春,石建初,左 强,朱向明. 盐分胁迫条件下冬小麦根系吸水模型的构建与验证[J]. 农业工程学报, 2011, 27(1): 112-117 |
| |
| 作者姓名： | 王利春 石建初 左 强 朱向明 |
| |
| 作者单位： | 1. 中国农业大学水利与土木工程学院，北京 100083； 2. 中国农业大学资源与环境学院，北京 100193;2. 中国农业大学资源与环境学院，北京 100193;2. 中国农业大学资源与环境学院，北京 100193;3. 中国科学院东北地理与农业生态研究所，哈尔滨 150081 |
| |
| 基金项目： | 国家科技支撑计划项目（2009BADA3B05）；国家自然科学基金项目（50779065）；国家自然科学基金项目（50809071） |
| |
| 摘 要： | 为了验证盐分胁迫条件下根系吸水与根氮质量之间的关系，同时对盐分胁迫修正因子的参数进行优化，该研究通过布置田间试验，对冬小麦平均根系吸水速率分布进行了估算，并对其与根氮质量密度之间的关系进行了分析，结果表明，田间试验条件下，冬小麦最大根系吸水速率与根氮质量密度仍呈线性正比关系。在此基础上，建立了盐分胁迫条件下基于根氮质量密度分布的根系吸水模型，并对其中盐分胁迫修正因子中的参数进行了优化，进而对咸水灌溉条件下冬小麦的根系吸水规律进行了模拟，其结果与利用反求方法估算得到平均根系吸水速率分布吻合较好，表明盐分胁迫条件下，冬小麦根系吸水与根氮质量之间的线性正比关系仍然成立，并可用于优化盐分胁迫修正因子，从而建立相关的根系吸水模型。
|
| 关 键 词： | 盐分，胁迫，模型，冬小麦，根氮质量密度，盐分胁迫修正因子 |
| 收稿时间： | 2010-07-24 |
| 修稿时间： | 2010-12-03 |
Establishing and validating the root water uptake model of winter wheat under salt stress conditions |
| |
| Wang Lichun,Shi Jianchu,Zuo Qiang and Zhu Xiangming. Establishing and validating the root water uptake model of winter wheat under salt stress conditions[J]. Transactions of the Chinese Society of Agricultural Engineering, 2011, 27(1): 112-117 |
| |
| Authors: | Wang Lichun Shi Jianchu Zuo Qiang Zhu Xiangming |
| |
| Affiliation: | Wang Lichun1,2,Shi Jianchu2,Zuo Qiang2,Zhu Xiangming3 (1. College of Water Conservancy and Civil Engineering,China Agricultural University,Beijing 100083,China,2. College of Resources and Environmental Sciences,Beijing 100194,China 3. Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,China) |
| |
| Abstract: | In order to validate the relations between the root-water-uptake and the root nitrogen mass, and optimize the salinity stress reduction function, a field experiment was designed to estimate the root-water-uptake rate distributions of winter wheat and discuss the relationship between the maximum root-water-uptake rate and the root nitrogen mass density. The relationship was used to establish a root-water-uptake model, optimize the salinity stress reduction function, and simulate the root-water-uptake dynamics under salinity stress. The simulated root-water-uptake rate distributions were comparable with the estimated values using the inverse method. The results showed that the linear relationship between root-water-uptake rate and root mass nitrogen was applicable in optimizing the salinity stress reduction function and establishing the root-water-uptake model under salinity stress. |
| |
| Keywords: | salt stresses models winter wheat root nitrogen mass density salinity stress reduction function |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
|
点击此处可从《农业工程学报》下载全文 |
