巴基斯坦地下灌溉农田的灌溉效率潜力

Journal of Engineering and Applied Sciences , University of Engineering and Technology, Peshawar Pub Date : 2016-12-31 DOI:10.25211/JEAS.V35I2.2056

G. Akbar, M. Ahmad, A. Ghafoor, Matiullah Khan, Z. Islam

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引用次数: 7

摘要

在巴基斯坦，传统的地面灌溉系统，边界、水平流域和沟床，本质上是低效的，而不理想的农田面积(长度和宽度)被认为是性能差的主要原因之一。为了解决这些问题，在巴基斯坦农民常规管理的13块土地上对三种地表灌溉系统进行了评估。利用地表灌溉评价模型WinSRFR 4.1.3对17个灌溉事件的灌溉性能进行了评价，包括应用效率(AE)、潜在应用效率(PAE)、充分性(AD)和分布均匀性(DU)，并确定了通过优化农田规模进一步提高的潜力。研究显示，农场的灌溉效率较差，AElq(41%至82%)、PAEmin(43%至95%)、ADlq(1.16至2.29)和DUlq(80%至99%)。农场平均AElq为;水平盆地(58%)<边缘(65%)<沟床(68%)。模拟模型表明，通过优化农田长度和宽度，水平流域、边界和沟床灌溉农田的平均PAE有进一步提高的潜力，分别达到94%、87%和96%。分析表明，人们对农田面积和灌溉效率之间的相互作用有了更深入的了解，这可能会支持灌溉者在不增加基础设施、机械或劳动力成本的情况下提高灌溉性能的决策。

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IRRIGATION EFFICIENCIES POTENTIAL UNDER SURFACE IRRIGATED FARMS IN PAKISTAN

The conventional surface irrigation systems, border, level basin and furrow bed, are inherently inefficient in Pakistan, while the suboptimal field sizes (length and width) are considered as one of the main reasons of poor performance. Addressing these issues, the three surface irrigation systems were evaluated on thirteen fields under routine farmer management in Pakistan. Irrigation performance including application efficiency ( AE ), Potential Application Efficiency ( PAE ), Adequacy ( AD ) and distribution uniformity ( DU ), of 17 irrigation events were evaluated and further potential for improvement by optimising field sizes were identified using surface irrigation evaluation Model WinSRFR 4.1.3. The study revealed poor irrigation efficiencies, AElq (41% to 82%), PAEmin (43% to 95%), ADlq (1.16 to 2.29) and DUlq (80% to 99%), on farms. The average AElq on farm was in the order of; level basin (58%) < border (65%)

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Journal of Engineering and Applied Sciences , University of Engineering and Technology, Peshawar

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