Economic and Technical Evaluation of Different Irrigation Systems for Date Palm Farming System in the GCC Countries: Case of Oman

B. Dhehibi, M. Salah, A. Frija, A. Aw-Hassan, Hamdane El Ouhibi, Youssef M. Al Raisi
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引用次数: 5

Abstract

In the frame of the ICARDA project “Development of sustainable date palm production systems in the GCC countries of the Arabian Peninsula”, researchers succeeded to introduce one promising technology (subsurface drip irrigation - SDI) in the date palm farming system in the Gulf region, defined as the poorest in the word in terms of water resources. In the light of these challenges, the main objective of this study is to evaluate the effect of the irrigation water volumes on the date palm productivity and water use efficiency under several conventional and improved irrigations systems.Three intervention levels on SDI have been used: at the rate of 60% 40% and 20% of water requirement. Results of this experimental study showed that SDI under the three intervention/options uses water more efficient in comparison to BI. Indeed, a considerable quantity of water for about 3545.554, 5726.45, and 7565.473 m3/ha could be saved by using SDI at the rate of 20%, 40 and 60% of water requirements, respectively. Thus, the WUE indicator is for about 2.0, 2.7, and 4.7 kg/m3, respectively. These figures are much higher when are compared to BI system where WUE is around 1.3 kgm-3.The economic evaluation suggests that under BI system, the total return, total variable costs, water costs and net profit were 20211.36, 5857.81, 1224.29, and 13129.25 $ ha-1, respectively. From another hand, by using SDI at the rate of 60% of water requirements, we note a slight difference in net profit when using this irrigation system, which is about US$12825.02/ha. Economic findings suggest that using SDI method versus BI method have additional cost but is economical at the long term as the SDI found to sustain the date palm farming system in this region where arid conditions acts as natural constraints for expansive agriculture.
海湾合作委员会国家椰枣种植系统不同灌溉系统的经济和技术评价:阿曼的案例
在ICARDA项目“阿拉伯半岛海湾合作委员会国家可持续枣椰树生产系统的发展”的框架内,研究人员成功地在海湾地区的枣椰树种植系统中引入了一种有前途的技术(地下滴灌- SDI),海湾地区被定义为世界上水资源最贫乏的地区。鉴于这些挑战,本研究的主要目的是评估几种传统和改进灌溉系统下灌溉水量对枣椰树生产力和水利用效率的影响。在SDI上使用了三种干预水平:需水量的60%、40%和20%。本实验研究结果表明,与BI相比,三种干预/方案下的SDI对水的利用效率更高。实际上,使用SDI可以节省大量的水,分别为3545.554、5726.45和7565.473 m3/ha,分别为需水量的20%、40%和60%。因此,WUE指标分别约为2.0、2.7和4.7 kg/m3。与WUE约为1.3 kg -3的BI系统相比,这些数字要高得多。经济评价表明,在BI系统下,总收益、总可变成本、水成本和净利润分别为20211.36、5857.81、1224.29和13129.25美元ha-1。另一方面,通过按需水量的60%使用SDI,我们注意到使用该灌溉系统的净利润略有不同,约为每公顷12825.02美元。经济研究结果表明,使用SDI方法与BI方法相比有额外的成本,但从长远来看是经济的,因为SDI方法可以维持该地区的枣椰树种植系统,而干旱条件是扩张农业的自然限制。
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