选择有代表性的 3种国产多孔渗水管和一种地面滴灌管进行室内外试验检测 ,比较各类灌水器的防堵性能、出流均匀性和压力流量关系等工作性能。结果表明 ,多孔管的上述测试指标均不理想 ,而具有压力补偿性能的滴灌管经无纺布外包处理地埋后 ,既具备防止负压堵塞的能力又可在田间 1m管距布设条件下获得良好的灌水均匀性。为此 ,研制一种既能抗负压堵塞、又具备较好压力补偿性能的地下滴灌灌水器是十分必要的。 Three typical domestic porous pipes and a surface drip irrigation pipe were selected to test the indoor and outdoor tests. The performance of various types of water emitters such as anti-blocking performance, outflow uniformity and pressure-flow relationship were compared. The results showed that the above-mentioned test index of porous pipe was not ideal, while the drip irrigation pipe with pressure compensation performance was buried by non-woven fabric outsourcing treatment, which not only possessed the ability of preventing negative pressure plugging but also obtained under the condition of 1m pipe spacing layout Good irrigation uniformity. For this reason, it is very necessary to develop an underground drip irrigation system that can resist both negative pressure and good pressure compensation.