عنوان مقاله [English]
Today, the authorities intend to reduce the amount of water resource in the further are expansion of modern irrigation systems in farms and gardens. Therefore, Evaluation and monitoring of drip irrigation systems are performed with the goal of improving systems performance. For this study, 20 samples of implemented drip irrigation systems in different cities of Golestan province have been studied in 2011-12. The evaluation has been performed based on the guideline of Soil Conservation Service (SCS). Measurements in any field were included pressure and discharge of emitters, check the status of the central control, applied water, wetted area, water quality and talk to farmers about the state of the system strategy. The results showed that average amounts of emission uniformity (EU), statistical uniformity coefficient (UC), efficiency reduction factor (ERF), potential application efficiency of low quarter (PELQ) and application efficiency of low quarter (AELQ) were 79. 85, 90, 65 and 73%, respectively showing that the performance of drip irrigation systems is average In general, the main problems of drip irrigation systems in the province can be classified four main categories of problems, design, implementation, management and operation of social and natural division in each of which the most important are containing: design and improper implementation, lack of cleaning filters, clogging & improper number of emitters, not-adjustment of inlet valve on manifold, inappropriate pressure and its non-uniform distribution, low wetted area and extreme weakness in operation management by the users.