| 王治军,雒天峰.滴灌条件下侧柏林地根区土壤水分运动规律研究[J].干旱地区农业研究,2008,(4):13~16 |
| 滴灌条件下侧柏林地根区土壤水分运动规律研究 |
| Soil water movement under drip irrigation of proscenia in Loess |
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| DOI：10.7606/j.issn.1000-7601.2008.04.03 |
| 中文关键词: 滴灌 水分运移 山地造林 |
| 英文关键词:drip irrigation water movement mountain afforestation |
| 基金项目:科技部西北开发专项(2005BA901A15) |
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| 中文摘要: |
| 在山地造林试验区,选择了5种滴头流量,研究了侧柏林地根区土壤滴灌条件下地表积水区半径、湿润锋水平扩散半径、湿润锋垂直入渗深度、湿润体大小等表征滴灌水分入渗的特征值。分析试验数据表明:地表积水区半径、湿润锋水平扩散半径与灌水延续时间的关系可用对数函数描述;湿润锋垂直入渗深度与灌水延续时间之间的关系可用幂函数描述,树木根系是影响湿润锋垂直入渗的因素之一。在灌水过程中,湿润锋水平扩散速度总大于垂直入渗速度,湿润体为平卧的椭球体。 |
| 英文摘要: |
| Drip irrigation used to mountain afforestation has been rarely studied before．Water movement under five dropping speeds in the loess was investigated in the field experiment by measuring vertical and horizontal movement of water in soil and surface water movement．The results showed that the log law can express surface and horizontal movement of water power function can express vertical movement of water and tree root is an important factor to impact vertical movement of water．The wetting front simulated an ellipsoid in irrigation process but it is changed hemisphere after irrigation． |
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