一、喷灌发展概况北京市喷灌经历了八年的科研、试点、推广和发展的过程、市郊现已发展喷灌4.5万亩,山区占89％。实践证明,只要按照自然规律和经济规律办事,因地制宜地选用合适的设备,喷灌都取得了不同程度的省水和增产效果。尤其是在地形复杂、土层脊薄、 First, the development of sprinkler irrigation Beijing sprinkler has experienced eight years of scientific research, pilot, promotion and development process, the suburbs has now developed 4.5 million mu of irrigated, mountains accounted for 89%. Practice has proved that as long as the law in accordance with the laws of nature and economy, according to local conditions to choose the right equipment, sprinkler irrigation have achieved varying degrees of water and increase production. Especially in the complex terrain, thin ridge soil,