| 从水盐平衡的角度分析控制排水在银南灌区实施的可行性 |
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| 引用本文： | 刘建刚,罗纨,贾忠华,方树星,王南江.从水盐平衡的角度分析控制排水在银南灌区实施的可行性[J].农业工程学报,2005,21(4):43-46. |
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| 作者姓名： | 刘建刚 罗纨 贾忠华 方树星 王南江 |
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| 作者单位： | 西安理工大学水资源研究所,西安,710048;宁夏水文水资源勘测局,银川,750001 |
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| 基金项目： | 国家自然科学基金资助项目(50209015) |
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| 摘 要： | 宁夏银南灌区目前普遍存在排水过量问题。为了减少由此带来的由于农业污染物流失造成的环境问题，控制排水措施可以灵活调节现有系统的排水能力。该文根据控制排水的定义、作用及其适用条件，结合银南灌区的地理条件及其1979～1998年19年的水盐引排状况和水稻不同生育期的耐盐特性，从水盐平衡的角度分析，结果表明目前银南灌区处于脱盐状态且土壤盐分尚未达到作物的耐盐临界值，控制排水技术在银南灌区运用是可行的。
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| 关 键 词： | 水盐平衡 排水 控制排水 作物耐盐 |
| 文章编号： | 1002-6819(2005)04-0043-04 |
| 收稿时间： | 2004/9/14 0:00:00 |
| 修稿时间： | 2004年9月14日 |
Feasibility study of adopting controlled drainage in Yinnan irrigation district based on salt and water balance |
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| Liu Jiangang,Luo Wan,Jia Zhonghu,Fang Shuxing and Wang Nanjiang.Feasibility study of adopting controlled drainage in Yinnan irrigation district based on salt and water balance[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21(4):43-46. |
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| Authors: | Liu Jiangang Luo Wan Jia Zhonghu Fang Shuxing and Wang Nanjiang |
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| Abstract: | Yinnan Irrigation District widely exists excessive drainage, which poses potential environmental risk downstream. Controlled drainage can be used to reduce the drainage rate for the current system. The feasibility of the application of controlled drainage based on the local weather, geography and soil conditions was studied. The monitoring data during the last 19 years show that the district is in a desalinized state, and the soil salt content from controlled experiment is lower than crop tolerance values. Therefore, adopting controlled drainage in Yinnan Irrigation District is a highly viable option in controlling agricultural pollution. |
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| Keywords: | salt and water balance drainage controlled drainage crop tolerance to salt |
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