[目的]为了缓解辽西地区旱情频发对农业的压力,同时为了推广新型节水灌溉设备—压片式微喷带的应用.[方法]在田间条件下对压片式微喷带工作性能进行试验研究,并通过与漫灌灌溉和无灌溉处理进行甘草种植效果比较,验证这一新型微灌设备的应用的可行性.[结果]压片式微喷带灌水均匀,灌溉后土壤水分空间变异系数低于10％；压片式微喷带灌溉与漫灌灌溉甘草株高相近,显著高于无灌溉处理；在整个甘草生长期内,压片式微喷带灌溉处理灌水量为4 139 m3/hm2,产量为14 970 kg/hm2,水分利用效率为3.62kg/m2,净效益达60 570元/hm2,相对漫灌灌溉分别高出9.2％、15.0％、26.6％和17.0％.[结论]压片式微喷带在田间具有较好的工作性能,具有节水增产的特点,能得到较高的经济效益,适合用于节水灌溉农业.%[Objective] To alleviate the pressure on agrisulture brought by the frequent drought in western arid region of Liaoning Province, and promote a new type water-saving irrigation equipment of polyethylene-blankholder spray tape. [ Method ] TTie Glycyrrhha uralensis L. planting effect irrigated by polyethylene-blankholder spray tape was studied by field experiment, and then compared with that of flood irrigation and non-rrigation. The application practicability of the new type irrigation equipment was verified. [ Result] The soil water distributed uniformly after each irrigation and variation coefficient of water distribution uniformity was less than 10% ; during the flowering period and maturation period, water consumption by spray irrigation and traditional irrigation was significantly larger than non-irrigation, meanwhile, the height of Glycyrrhha uralensis L. of irrigation treatments were significantly higher than non-irrigation after flowering period; however, the water consumed during the whole growing season, yield, water use efficiency and net contribution of treatment irrigated by spray tape were 4 139 m /hmz, 14 970 kg/hm2, 3.62 kg/m3, and 60 570 yuan/hm , which were 9.2% , 15.0% , 26.6% and 17.0% , respectively, larger than traditional irrigation. [Conclusion] Since the polyethylene-blankholder spray tape had a better working performance, saved water and increased yield while used for irrigation, it was suit for water-saving agriculture.
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