Rice irrigation ditch water-saving device

The utility model relates to a rice irrigation ditch water-saving device which comprises a placing plate, the top face of the placing plate is fixedly connected with a fixing frame, a connecting bin is placed on the top face of the placing plate and located inside the fixing frame, a partition plate is fixedly connected inside the connecting bin, and a plurality of connecting holes are formed in the top face of the partition plate. A protection plate is fixedly connected to the bottom face of the partition plate, a contact sensor is fixedly installed on the bottom face of the partition plate, a fixing rope is fixedly connected to the inner bottom wall of the connecting bin, a floating ball is fixedly connected to the other end of the fixing rope, and a connecting groove is formed in the back face of the connecting bin. According to the water-saving device for the rice irrigation ditch, under the action of the contact sensor and the floating ball, the water suction pump is controlled, irrigation water is contr