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【目的】研究分析毛管供水长度与管径、供水压力、蓄水时间、不同规格末级导水微管水量对灌水均匀度的影响关系。【方法】通过不同低压条件下单条供水毛管上各蓄流灌水器的流量观测试验,得到不同的供水管长度与直径,不同的供水压力下的蓄流灌水器出水流量值以及分析了蓄流灌水器出水量均匀度。【结果】当其它影响因素相等条件下,灌水均匀度随供水毛管铺设长度的减少而增加,随管径的增大而增大;灌水均匀度随供水时间延长而增长;末级导水微管管长为3.5 m,管径为4 mm的微管最合理。【结论】当供水压力从30～60 cm变化时,供水压力对灌水均匀度没有太大影响,并且灌水器均匀度都能达到0.9以上。这表明蓄流灌溉方式是解决和处理自然低水头微灌系统灌溉均匀性差的一种有效技术方法。
【Objective】 The objective of this study was to analyze the relationship between capillary length and diameter, water supply pressure, storage time, and the amount of water supplied by the last stage of microtubules under different specifications. 【Method】 Through the observation of the flow rate of each water flow emitter on a single water supply capillary under different low pressure conditions, different water supply tube length and diameter, water flow rate of reservoir water flow at different water supply pressure were obtained, Out of water uniformity. 【Result】 When the other factors were equal, the uniformity of irrigation increased with the decrease of the laying length of the water supply capillary and increased with the increase of the diameter of the water supply. The evenness of irrigation increased with the prolongation of water supply time. Tube length of 3.5 m, 4 mm tube diameter of the most reasonable microtubules. 【Conclusion】 When the water supply pressure changes from 30 to 60 cm, the water supply pressure has little effect on the uniformity of irrigation, and the evenness of the emitter can reach above 0.9. This shows that the method of reservoir irrigation is an effective technique to solve and deal with the poor irrigation uniformity of natural low head irrigation system.