Intelligent weeding method for field

The invention discloses a field intelligent weeding method. A field weeding machine comprises a machine body, a weeding device, a vibration conveying device, a forage collecting box and a centralized electric control device. The field weeding machine controls the machine body to move along the cruise path according to the input cruise path, recognizes the width of the field ridges according to image information fed back by the camera in real time and distance information fed back by the walking chassis distance sensor in real time, and controls the machine body steering mechanism to act to finely adjust the body position of the machine body so that the weeding hob can directly face the position between the field ridges. Meanwhile, image information fed back by a mode recognition sensor in real time is compared according to input weed image information data, and after weeds bred between field ridges and the positions of the weeds are recognized, a weeding hob is controlled to go deep into soil to weed in a rol