An automatic farmland irrigation system includes: a canal water irrigation device, a field water drainage device, a monitoring device, and a central control system； the canal water irrigation device is disposed between the irrigation ditch and the farmland to control the drainage of the canal water or to the farmland Equipment； field water drainage equipment is equipment installed in the field to control excessive water release or stoppage in the farmland, or equipment that directs or stops water from high farmland to low farmland； monitoring equipment includes Flowmeter, canal water level and water quality monitoring device, soil quality and water level monitoring device, and field monitoring device； central control system is a dedicated application built on computer and smart mobile device； central control system communicates with each other through communication The device is connected, receives the information returned by each device in real time, analyzes the received information in real time, and directly controls, controls, commands, manages the operation of the canal irrigation equipment and the water drainage equipment.一種農田自動灌溉系統，包括：渠水灌溉設備、田水引放設備、監測設備、以及中控系統；渠水灌溉設備是設置在灌溉溝渠與農田之間用以控制渠水放流或斷流至農田的設備；田水引放設備是設置於田梗用以控制農田中過多的水向外放引或停引的設備，或將高位農田的水放引或停引至低位農田的設備；監測設備包含流量計、渠水水位及水質監測裝置、土壤質量及水位監測裝置、以及場域監視裝置；中控系統是架構在電腦、智慧型行動裝置的專屬應用程式；中控系統通過通訊連結與上述各設備連線，實時接收各設備所回傳的信息，實時分析比對所接收的信息，及實時指揮、控制、命令、管理渠水灌溉設備、田水引放設備的運作。
