Combined type special rotary cultivator for paddy field

The utility model relates to a combined type special rotary cultivator for a paddy field, which belongs to the technical field of agricultural machinery and comprises a rack, a mounted frame, a gear-box, a knife roller assembly, a Pu roller assembly, a Pu roller frame and a leveling plough, wherein the gear-box is arranged at the middle part of the rack, the mounted frame is arranged at the front end of the rack, the knife roller assembly is arranged below the rack, the middle part of the knife roller assembly is connected with two sides of the gear-box through a spline shaft, two ends of the knife roller assembly are arranged at two sides of the rack, the rear end of the rack is provided with a mud guard and the Pu roller frame, a hydraulic cylinder is arranged on the Pu roller frame, the Pu roller assembly is arranged below the Pu roller frame, and the leveling plough is arranged at the rear end of the Pu roller frame. According to the rotary cultivator, the rotary cultivating operation of the paddy field i