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随着喷滴灌的发展,将化肥或农药通过灌溉系统予以施用,较之传统在地面上进行撒布的方法,可以减少劳动量、节约能源、降低设备投资和提高化肥与农药的使用效率,因此近几年来在全世界范围内日益流行。将化肥或农药注入灌溉系统的方法和工具类型很多。作者研究了一种简易不需系统外部能源作为动力的注入设备——80毫米(3时)两级并联射流泵系统。以往射流泵技术的研究工作只着重在“高流量比”(吸入流量与工作流量之比,简称
With the development of drip irrigation, chemical fertilizers or pesticides can be applied through the irrigation system. Compared with the traditional method of spreading on the ground, the amount of labor can be reduced, the energy consumption can be saved, the equipment investment can be reduced, and the efficiency of using chemical fertilizers and pesticides can be increased. Therefore, Over the past few years in the world increasingly popular. There are many types of methods and tools for injecting fertilizers or pesticides into irrigation systems. The authors studied a simple injection system that requires no external power from the system - a 80 mm (3-hour) two-stage parallel jet pump system. In the past, the research on jet pump technology only focused on the “high flow ratio” (the ratio of intake flow to working flow,