تعيين رابطه دبي - فشار در كوزه هاي مورد استفاده در آبياري كوزه اي

The pot irrigation is an old irrigation method for trees especially in arid and semiarid regions. This method is not used during the last several decades because of different problems. Ln this research the effect of water pressure and pot volume on the seepage amount from pots is distinguished. A statistical design of split plot, with 4 different water pressure levels and 3 pot sizes(O.5 lit, 5 lit, 15 lit) was used and water seepage amounts from the pots after 4 hours were measured. Finally find out the following results: in every pressure level, there was a linear relationship between pot volumes and discharges; Larger pot volume resulted in a larger discharge seepage from the pots. Therefore, in the places which is impossible to increase water pressure in the pot irrigation system , the larger pots used till irrigation discharge increases. In each pot size, there was a linear relationship between water pressure and seepage discharge of pots, in such a way that with increasing of water pressure, seepage discharge of pots was increased. When it is impossible to use larger pots, it is possible to increase water pressure and find out increasing in irrigation discharge. Lncreases of pots areas, results in increasing seepage discharge.