Ratoon rice harvesting header and harvester provided with same

The invention provides a ratooning rice harvesting header and a harvester provided with the same. The ratooning rice harvesting header comprises a multi-layer adjustable disc cutter, a header body and a spike cutter. The multi-layer adjustable disc cutter is installed below the header and located below the rear portion of the spike head cutter, and the spike head cutter is installed at the front end of the header. The multi-layer adjustable disc cutter comprises at least one set of multi-layer disc cutting assemblies, each set comprises two multi-layer disc cutting assemblies, and each multi-layer disc cutting assembly comprises at least three layers of vertically-arranged blades. The multi-layer adjustable disc cutter and the ear head cutter are used in cooperation, the grass-grain ratio of materials can be reduced, so that the power consumption of the harvester is reduced, it is guaranteed that the stubble height meets the growth requirement of ratooning rice in the regeneration season, stalks between the e