一、问题的提出喷灌的优越性日益广泛地被人们所认识,它适应性强,能增产、省水、省劳力。实践证明,经济作物区、地面灌溉困难的地区,宜先采用喷灌新技术。在国外,近年来,由于优质廉价的塑料管大批生产和使 First, the issue put forward The advantages of sprinkler irrigation is increasingly recognized by people, it is adaptable, can increase production, water conservation, provincial labor. Practice has proved that economic crops, ground irrigation difficult areas, should first use sprinkler irrigation technology. In foreign countries, in recent years, due to high quality and cheap plastic pipe mass production and use