The Effect of Different Factors on Clogging of inlay Patch Drip Irrigation Belt

Abstract

【Objective】 Emitter cologging is a common issue in drip irrigation. This paper studies the effects of laying slope, sediment content and operating pressure on irrigation uniformity and flow drop of the inlaid patch drip irrigation in attempts to reduce clogging of the drip irrigation belt. 【Method】 The experiment was design using a uniform orthogonal test plan with three factors and three levels: laying slope (-1, 0, 1%), sediment content (1, 2, 3 g/L) and operating pressure (40, 70, 100 kPa). The experiment was conducted in a laboratory using 30 m drip irrigation belts. 【Result】 The factors that influence irrigation uniformity are ranked in the order of sediment content > laying slope > operating pressure. The factors that impact flow drop are ranked in the order of sand content > operating pressure > laying slope. Regression models for estimating irrigation uniformity and flow drop using the sediment content and operating pressure were accurate, with its standardized root mean square errors being 2.98% and 2.42%. 【Conclusion】 Sediment content is an important factor affecting the clogging of the inlaid patch drip irrigation belt. The models we presented to link sediment content, laying slope and operating pressure to irrigation uniformity and flow rate drop were accurate and can be used for design.

Keywords

• inlaid patch drip irrigation tape
• irrigation uniformity
• flow rate drop
• prediction model