Purpose: to evaluate the irrigation quality indicators of hose-reel sprinklers ZDM with polyethylene sprinkling nozzles for circular and sector irrigation designed by VolzhNIIGiM.
Materials and methods. Hydraulic calculations of jet nozzle and spout diameters for various types of strip sprinkler consoles were performed. Field studies of irrigation quality indicators of hose-reel sprinklers ZDM were carried out in accordance with STO AIST 11.1-2010 requirements. Irrigation uniformity was assessed by water volume in rain gauges installed along the sprinkler truss-type console. The coefficient values of effective, insufficient and excessive irrigation, as well as the Christiansen coefficient were determined by calculation. During the research, the water consumption values of a sprinkler, the rain coverage, the irrigation rate and other indicators were recorded.
Results and discussions. Field studies have shown that strip sprinklers ZDM with KD 40/62 and KD 63/86 consoles have good irrigation uniformity when calculated sprinkler nozzles with spouts are installed. Irrigation uniformity is high, the coefficient of effective irrigation even at medium and high wind speeds is 0.751–0.773. Truss-typed strip sprinklers form fine and medium rain within the range of 0.9–1 mm due to the use of deflectors and provide the energy deposition decrease on soil and plants. The track after the passage of consoles is small and is within 1–2 cm track depth.
Conclusions: ZDM hose-drum-type sprinklers with polyethylene sprinkler heads for circular and sector irrigation designed by VolzhNIIGiM provide good uniformity of irrigation, generate mist and have high flotation at a rut shallow depth.
hose-reel sprinkler, sprinkler nozzle, irrigation uniformity, sprinkler water consumption, rain coverage, rain intensity, average raindrop diameter, evaporation and windage loss, machine cross-country ability
Ryzhko S. N., Ryzhko N. F., Shishenin E. A., Smirnov E. S. Irrigation qualitative indicators of strip hose-reel sprinklers ZDM. Ways of Increasing the Efficiency of Irrigated Agriculture. 2023;91(3):66–78. (In Russ.).
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