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  1 - Investigation of fixed classical sprinkler irrigation systems with variable sprinklers in Isfahan province
  مسعود فرزام نیا حسین دهقانی سانیج
  In this study, fixed classic sprinkler irrigation systems with mobile sprinklers implemented in 15 farms in Isfahan province were evaluated. The users of the mentioned systems were relatively satisfied and believed that changing the system from surface irrigation to spr أکثر

  In this study, fixed classic sprinkler irrigation systems with mobile sprinklers implemented in 15 farms in Isfahan province were evaluated. The users of the mentioned systems were relatively satisfied and believed that changing the system from surface irrigation to sprinkler irrigation has reduced water consumption and increased the area under cultivation and as a result has increased income, but has reduced unit yield and product quality. Most farms were in windy areas, with an average windfall loss of 20%. The average values ​​of uniformity of water distribution and uniformity of systems were 58 and 65, respectively, and were classified into three quality groups: "poor", relatively good and good. The maximum, minimum and average values ​​for the lowest potential quadrant (PELQs) application efficiencies were 72, 19 and 48, respectively, and for the lowest quadrant (AELQs) application efficiencies were 66, 14 and 41%, respectively. Most farms were under-irrigated and this is why the values ​​of the last two parameters are close. According to the obtained results, the country is facing water and energy shortages, small land ownership and, most importantly, climate restrictions, the use of these systems can not be effective without careful management and supervision. It is better to replace them with medium pressure sprinkler irrigation systems (small sprinklers) or low pressure systems in general. تفاصيل المقالة