稻田灌溉排水自动控制新技术的研究

介绍一种适合于淹灌稻田实现自动控制的灌溉新技术，其中灌溉部分由自动给水栓、有压输水管道系统和灌溉水源三部分组成，自动给水栓有一个能自动跟踪稻田水层变化的传感装置，它与给水相连，当稻田水层消耗至允许下限时，传感器驱动给水栓开启放水；当稻田水层灌至设计上限时，关闭给水栓，停止灌水。管理人员只须根据作物不同生育阶段的灌水控制要求调定传感装置的上下限，稻田的灌溉既能自动完成。

Research on New Technique of Automatic Control for Paddy Field Irrigation and Drainage

A new technique of automatic control suitable for flooding irrigating paddy field, is described. Its irrigation part is composed of automatic hydrant, pressure delivery pipeline and irrigation water source. The automatic hydrant has a sensing device for automatically tracking the variation of water layer in the paddy field. The sensing device is connected with the hydrant; when the water layer in the paddy field is lowering to the allowable lower limit, the sensor will drive the hydrant to open and to release water; when the water layer in the paddy field has raised to the design upper limit, the sensor will drive the hydrant to close and to stop watering. According to the requirements of watering control in different growing stage of crop only, the management personnel will regulate the upper limit and lower limit of the sensor; then the paddy field irrigation can be implemented automatically.