TY - JOUR
T1 - Investigating the Effect of Pressure on Water Leakage by Drip Irrigation without a Pump in Four Different Ejectors
TT - برررسی تأثیر فشار بر گسیلندگی آب با روش کیت آبیاری قطرهای بدون استفاده از پمپ، در چهار نوع قطرهچکان مختلف
JF - JSTNAR
JO - JSTNAR
VL - 24
IS - 1
UR - http://jstnar.iut.ac.ir/article-1-3814-en.html
Y1 - 2020
SP - 213
EP - 224
KW - Irrigation kit
KW - Drip irrigation
KW - Discharge
KW - Uniformity factor
N2 - Due to the increasing number of small crops, the system of irrigation without a pump can be an economical way. Therefore, in this research, the effects of the type of droplet and the height of water supply system utilization on the characteristics of water distribution (discharge, dispersion uniformity coefficient (CU) and coefficients of variation of discharge) were investigated. In this research, the pressure functions of 1, 2, 3 and 4 meters and three irrigation repeats were investigated; also, the discharge characteristics of jet pots of 2 and 8 nozzles, easy dripper and netafim were addressed. The results indicated that at 1 m pressure, drippers of pots of 2 and 8 nozzles with the uniformity coefficients of distribution were equal to 89.39 and 99.30%, and the discharge rate was 3.60 and 3.62 liters per hour at a pressure of 2 m. An easy-drain drip with a discharge rate of 3.85 L / h and a uniform distribution of 99.44%, at a height of 3 and 4 m, the droplets of the netafim with an outlet discharge were 3.87 and 3.97 liters per hour and the uniformity coefficients of 99.32 and 99.47 percent had the best broadcast conditions. According to these significant differences (P <0.05), it can be concluded that at pressures less than 2 m of jar droplets and at more than 3 m, netafim and Easy Dipper types could have better leakage due to pressure regulators. In general, each of the four types of emitters produced a uniform dispersion and the optimum discharge at different pressures.
M3 10.47176/jwss.24.1.38113
ER -