Grafting mechanism for agronomic fruit tree maintenance

The invention relates to the field of orchard grafting, in particular to a grafting mechanism for agronomic fruit tree maintenance. A scion comprises a positioning disc, a film covering mechanism and a cutting mechanism; according to the device, the cutter body can be taken out from the traction column through the top cap, the cutter body is used for trimming the surface before connection of scions and rootstocks, then the positioning disc is arranged on the surface of the rootstocks in grafted plants in a sleeving mode, after the scions are inserted into the rootstocks, one end of the film roll adheres to the joints of the plants, and the motor drives the helical tooth shaft to rotate; the cutter body is pulled out of the traction column to drive the mounting table and the movable disc to rotate at the upper end of the positioning disc, a film roll fixed at the upper end of the mounting table is pulled out continuously under the traction of the traction column and wraps and winds a plant joint to complete fi