The front and rear combes are driven by the front and rear shafts of the front and rear shafts. The front and rear combs are driven by the front and rear shafts. The axial centerline of the tooth is located in the longitudinal direction of the large ridge double seedling eye or the small ridge single seedling eye, each can be arranged 6 to 10 groups; the left and right wings and the comb are arranged on the front beam; Structure of the weeding machine, artificial weeding to improve the efficiency of 8 to 10 times the injury rate is low, in addition to seed cleaning rate in general.