多滴头小管径滴灌系统水力性能试验研究

摘要

Through irrigation experimental study on drip system with multiple minor-caliber pipe, relation on flow and pressure head is evaluated , and the comprehensive performance index of emitter is analyzed and evaluated.Data shows that emitter manufacture deviation is less than 5%and the level is superior under nominal working pressure.Irrigation uniformity of the emitters is more than 95%and the uniformity is good.Water head loss is 3%and the loss ratio is small.So multiple minor-caliber pipe is suitable for greenhouse irrigation.%通过多滴头小管径滴管系统灌水试验研究, 评价流量与水头压力关系, 进而进行灌水器的综合性能指标分析与评价. 结果表明: 在额定压力工作条件下, 灌水器的制造偏差小于5%, 等级为优等; 灌水器的灌水均匀度大于95%,灌水均匀性良好; 灌水器的水头损失比例为3%, 损失比例较小, 适宜于温室灌溉.