9YF-2.2S square baler is a forage bundling and harvesting machine, which is mainly used for harvesting various grasses, rice, wheat and other crop straws from the field. It can automatically pick up the grass and straw cutted in the field, and bundle the scattered straw into rectangular bales with neat and regular shape through the operation procedures of conveying, feeding, compression forming and tying rope. The machine matches with 33.1kw (or 36.8kw) and above wheeled tractor, and is operated by one person of tractor driver. It is suitable for all kinds of grassland and farmland operation. At the same time, it is also suitable for fixed operation by manual feeding or other methods.