2004•Shenyang Nongye Daxue xuebaoRequires access

Experiment on Choosing Emitter of Subsurface Drip Irrigation

Xiaotao Hu

Abstract

From analyzing the drip irrigation emitter types and choosing in experiment, the main conclusions are as follows: The best type of subsurface drip irrigation emitter is drip pipe. Under lower water press the stabilization discharge of orifice emitter in soil is three fifth of that in air, which can meet the request of subsurface drip irrigation. Under higher water press,all the choosed emitters can meet the request of subsurface drip irrigation.Through observing the wetted front, it was found to move faster upward under emitter of larger discharge. So for preventing subsurface drip irrigation from seepage,large discharge emitter should be choosen.

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Key concepts: Drip irrigation, Common emitter, Irrigation, Environmental science, Body orifice, Surface irrigation, Low-flow irrigation systems, Hydrology (agriculture)