4QZ-2-silage corn harvester is mainly used for green and yellow straw harvest, it can cut,feed,shred and throw corn straw in one production cycle on the same machine. The web width is 2 meters. normal operating efficiency of the harvest is 6-10 acres / hour, and it can be equipped with an 80-horsepower tractor.It has round blade and vertival feeder. This mechanism avoid the material conjestion. The shreddr can cut the straw any length for feed purpose.