Abstract :
: Scarcity of irrigation water and decreasing water resources are the most important limiting factors in crop production in most countries such as Iran. Therefore, studying about optimum use of water and increase of water use efficiency is necessary in agriculture part.Use of low pressure Irrigation systems (hydro flume) is suggested for replacing traditional surface irrigation methods. The main aim of this research was to compare water distribution in hydro flume system with traditional and sprinkler irrigation systems. Thus, some farms in Kabodarahang plain were selected and evaluated. Water consumption, yield, irrigation efficiency and water productivity were evaluated. The results showed that most water losses in the studied farms which irrigated with hydro flume were deep percolation and in the farms irrigated with traditional furrow irrigation were runoff and deep percolation. The amount of runoff losses in traditional and hydro flume methods were 25.8 and 15 percent respectively. The average of potential efficiency low quarter, application efficiency of low quarter, distribution uniformity, and uniformity of Christiansenʹs coefficient in hydro flume method were 50, 48.2, 79.2, and 77 respectively. These parameters for traditional method were 44.8, 34.9, 87.65, and 89.1 respectively. These values for sprinkler method were 57.6, 56, 70.3, and 76.6 respectively. The amounts of water productivity in traditional, hydro flume and sprinkler irrigation systems were 1.2, 2.4 and 3.2 kg/m3, respectively.
