Automatic film-mulching and film-breaking seeding machine and film-mulching and seeding method

The invention relates to the technical field of seeding equipment, in particular to an automatic film mulching and breaking seeding machine and a film mulching and seeding method. The automatic film-mulching and film-breaking seeding machine comprises a rack, a film-mulching device and a film-breaking and soil-covering device. The film laying device clamps a rolled film through a clamping channel formed by a film unfolding roller and a clamping roller, the film unfolding roller is driven to rotate through a driving roller by means of a chain wheel and chain transmission structure, and active film conveying and film laying are achieved. According to the film breaking and soil covering device, the first power cylinder, the second power cylinder, the first driving arm, the second driving arm and the connecting arm form a five-connecting-rod mechanism, the first power cylinder and the second power cylinder jointly drive the soil turning plate with the shovel teeth to move, and the soil turning plate completes sco