永昌县春小麦喷灌节水效益研究

Study on the water-saving benefit of sprinkling irrigation in spring wheat field in Yongchang county

针对永昌县独特的地质、水文、气象条件，采用喷灌和地面常规灌溉对比的方法，对喷灌的节水效益进行了初步研究，总结出了适宜该区的喷灌制度，结果表明：喷灌比地面灌节水1 161.5 m3/hm2，节水率达37.7 %，比地面灌每公顷增产小麦1 095 kg，单方水效益增加了1.39 kg，水产值增加1.81元/m3。

Countering peculiar geological, hydrological and meteorological phenomena condition in Yongchang county, this paper reports a experimental study on saving water of spring wheat under sprinkling irrigation, inquire into sprinkling irrigation system and rule. It drew a conclusion that sprinkling irrigation saved water 1 161.5 m3/hm2 than surface irrigation and water-saving rate is 37.7 %. The production of spring wheat under sprinkling irrigation increased 1 095 kg and the benefit per m3 water increased 1.39 kg and product value is 1.81yuan/m3 than surface irrigation.