Determination of Surface Irrigation Efficiencies for Pumpkin plant in Khoy Plain Lands
Subject Areas : crop productionفاطمه پناهدوست 1 , Faribourz Ahmadzadeh 2
1 - دانشجوي كارشناسي ارشد گروه علوم و مهندسي آب، واحد تبريز، دانشگاه آزاد اسلامي، تبريز – ايران
2 - Department of Water Sciences and Engineering,Tabriz Branch, Islamic Azad University, Tabriz
Keywords: irrigation efficiency , surface irrigation , Khoy plain , Parsha l flume , deep percolation,
Abstract :
According to the statistics, surface irrigation system covers more than 95% of the country's lands and current efficiency of the system is estimated as less than 35%. Hence, the need for detailed understanding of surface irrigation efficiencies in the irrigated lands and presenting appropriate solutions to increase such factors are too important to measure and should be taken in line with optimal consumption of agricultural water which covers more than 70% of the country's available water. Hence, a farm was selected in Malajnood village area which was irrigated in furrow method and then was evaluated during the two phases of irrigation. The underlying tests were conducted using partial Parshall with input water flow of 3.66, 1.97L?S. Elliot7Wlker's two-point method was used to determine infiltration equation coefficients. The relationship between needed water and exact moisture distribution which was equal to 2 samples of irrigation indicated two cases of incomplete irrigation. Findings of the study indicated that deep percolation ratio was 23.33 and 45.63 and the irrigation adequacy was 100% that showed the high water losses and low water efficiency, but the full supply of plant water needed.
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