ساخت ايران ZB ارزيابي آبپاش مدل

Evaluation of zb model sprinkler maded in Iran

Considering the growing population and increased demand for food in Iran, it is necessary to use sources of water more efficiently. One of the effective methods of increasing water use efficiency is sprinkler irrigation. In this method, in addition to accurate selection of sprinkler, net arrangement, pressure, and sprinkler riser level also affect water distribution uniformity and increasing water use efficiency. In this research, zb sprinkler at of 2.5, 3 and 3.5 atm, two riser levels 60 and 100cm and different arrangements 15s 18m, 12x 18m, 1545m, 1245m, 9s 15m, 12x 12m and 9x 12m were evaluated under calm wind with three replications in Hashemabad Cotton Research Station of Gorgan. The results showed that, water distribution uniformity increased nonsignificantly with increasing sprinkler riser level from 60 to 100 cm. Maximum water distribution uniformity was obtained at 3 atm and under higher and lower pressures, water distribution uniformity decreased due to spray and drops of water. Water distribution uniformity was also maximized at l2*l2m arrangement but according to the economical condition it is better to increase the space of sprinklers so that water distribution uniformity will be maintained in an acceptabel range (more than 80%).