| 闫侃,刘俊民,李继伟,刘占宝.基于水盐平衡的灌区灌排系统合理性分析[J].干旱地区农业研究,2010,28(2):146~149 |
| 基于水盐平衡的灌区灌排系统合理性分析 |
| Rational analysis of irrigation drainage system of irrigation district based on hydro salinity balance |
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| DOI：10.7606/j.issn.1000-7601.2010.02.30 |
| 中文关键词: 灌排系统 水盐平衡 排灌比 |
| 英文关键词:irrigation-drainage system hydro-salinity balance ratio of drainage to irrigation |
| 基金项目:国家科技支撑计划项目(2006BAD11B05)；国家自然科学基金(50879071) |
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| 中文摘要: |
| 灌溉是灌区农业生产持续发展的先决条件，排水则是决定灌区能否可持续发展的保证。本研究在全面考虑影响灌排系统健康发展的众多因素的基础上，以青铜峡灌区为例，从土壤盐碱化的防治及水资源合理利用角度，运用水盐平衡原理，判别灌区积、脱盐状态及排水效果，分析灌区灌排系统的合理性。分析结果表明青铜峡灌区灌排系统运行良好，对灌区排盐及盐碱化的防治起着积极的作用。同时也发现灌区存在着排灌比过大，排水能力过剩，排水系统不合理等问题。 |
| 英文摘要: |
| Irrigation is the precondition of agricultural production, and drainage is the guarantee that determines whether the irrigation area can keep a sustainable development. The paper lumps factors that have impact on the healthy development of irrigation and drainage system. Taking Qingtongxia Irrigation District for example, the paper views from the prevention of soil salinization and ratio
nal utilization of water resources, applies the theory of water-salt balance to judge the condition of the salification and desalination and the effect of drainage, and then analyses the rationality of irrigation and drainage system in the irrigation district. The results indicate that the drainage system in Qingtongxia Irrigation District runs well and plays a positive role to the disposal of soil salt. The paper also points out some problems, such as the excessive ratio of drainage to irrigation, drainage capacity surplus and the unreasonable drainage system. |
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