摘要
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。
Performances of three kinds of typical porous pipes and one kind of trickle irrigation pipe used for subsurface irrigation were tested through field and laboratory experiments. The characteristics of these watering devices, such as anti clogging, uniformity of discharge flow and pressure discharge curve, were analyzed and compared. Results show that performances of porous pipes are not good on all tested items. The discharge flow uniformity and anti clogging of tested trickle irrigation pipe enwrapped with non fabric material, when used for subsurface irrigation, are relatively excellent.
出处
《灌溉排水》
CSCD
1999年第4期10-14,共5页
Irrigation and Drainage
基金
国家"九五"科技攻关项目!( 96 - 0 0 6 - 0 2 - 0 1)的部分内容
关键词
地下滴灌
灌水器
防堵
均匀性
渗灌
subsurface drip irrigation
watering device
anti clogging
Discharge flow uniformity
