Gate device for farmland irrigation and drainage

The utility model discloses a gate device for farmland irrigation and drainage. The gate comprises a gate opening, a through-flow plate, a gate plate and a driving device, the gate opening is a rectangular frame with an opening in one side. Each frame is provided with a clamping groove. An opening of each clamping groove faces the inner side of the frame, the flashboard is longitudinally clamped in the clamping grooves, a rack is arranged on the flashboard, the length direction of the rack is consistent with the longitudinal direction of the flashboard, the driving device comprises a gear, andthe gear is meshed with the rack in the length direction of the rack. The bagged soil irrigation and drainage device replaces a previous'water coming soil covering 'bagged soil irrigation and drainage mode for farmland irrigation and drainage, liberates labor, improves irrigation and drainage accuracy, punctuality and high efficiency, and can be manufactured, popularized and applied in large scale due to simple control s