For severe water shortage areas, it is necessary for regional water transfer to be restricted by underground water pressure during the severe drought season. In view of the low water resources, the optional water source limitation and the relative increase of water transfer cost, the water transfer time must be accurately controlled in order to maximize the limited water resources. In agricultural irrigation, a mathematical model is established based on the soil moisture monitoring data, crop

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... owth, dry time prediction of crop, and the emergency water diversion water canal characteristics. The point implementation of precision irrigation is used to minimize water loss and maximize water diversion irrigation efficiency.