Farmland ditching device for irrigation and water conservancy

The utility model discloses a farmland ditching device for farmland water conservancy, belongs to the technical field of farmland ditching, and aims to solve the problems that much soil is adhered to a ditching knife to influence the ditching efficiency and loose soil can bury a groove again after the ditching, the farmland ditching device comprises a mounting plate, a driving motor is fixed on one side of the top surface of the mounting plate, and the driving motor is fixed on the other side of the top surface of the mounting plate; a driving chain wheel and a sector gear are fixed to the driving end of the driving motor, mounting parts are fixed to the two sides of the front end of the mounting plate, a connecting rod is rotationally connected between the mounting parts, a brush is arranged on the outer wall of the connecting rod, a driven chain wheel is fixed to one end of the connecting rod, and a chain is connected to the outer side of the driving chain wheel and the outer side of the driven chain wheel