عنوان مقاله [English]
The agricultural section is the largest consumer of water in the world. In recent decades, limited water resources for agricultural purposes on one hand and population increase on the other hand, made the development and application of modern methods of irrigation inevitable. The use of pressurized irrigation systems such as drip irrigation is an effective option to increase water use efficiency, therefore optimal designs are required. In the present study, for optimizing the basic hydraulic calculations of 14 drip irrigation scheme, located in 14 cities in Mazandaran province, Hydrocalc planning software was used. Then the design data were compared with data from the software. The results show that by using this model the amount of pressure reduction in emitter, declines by 30 to 70 percent. Optimal velocity and amount of water in the pipe has been reduced from 20 to 60 percent. According to the continuity equation, the flow rate is reduced by 20 to 50 percent. Thus, by using this model and due to the flow rate reduction, the average savings in water use are about 50 percent and uniformity rate has reached over 91 percent.