1节水灌溉技术类型及基地建设1.1技术类型及特点1.1.1半固定式管道恒压变频供水系统半固定式管道恒压变频供水系统具有以下特点:1.采用变频技术实现供水泵站的自动运行,无需专人值班;2.农民可自由选择适用的灌溉方式进行灌溉,使用方便;3.用水计量收费到户;4.水资源利用率高;5. 1 Types of water-saving irrigation technology and base construction 1.1 Technical Types and Features 1.1.1 Semi-fixed pipeline constant pressure variable frequency water supply system Semi-fixed pipeline constant pressure water supply system has the following characteristics: 1. Using frequency conversion technology to achieve water pump station automation Operation, no special duty on duty; 2. Farmers are free to choose the appropriate irrigation methods for irrigation, easy to use; 3. Water metering to households; 4. High water use efficiency;