نوع مقاله : مقاله پژوهشی
نویسنده
کارشناس ارشد آبیاری و زهکشی، شرکت مهندسی مشاور آبخوان زاگرس
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
The purpose of this study was to determine optimum values of main factors affecting uniformity (i.e. water pressure, sprinklers shape and spacing) in semi-portable sprinkler irrigation system under different wind speed conditions. The standard ISO 7749/2 was taken into account to determine uniformity. The field test was conducted under single sprinkler condition in south-east region of Khouzestan Province. Results showed that uniformity decreased as wind speed and working pressure increased. According to the results of the investigations, in order to obtain acceptable uniformity (80%), the most suitable sprinkler spacing is 2525m with square-shaped when wind speed are higher than 2m.s-1. Uniformity decreased from 80 percent when wind speed exceeded 15 km.hr-1. Therefore, sprinkler irrigation is not recommended in this condition.
کلیدواژهها [English]