... (wheat,corn, soybean ), tractor(20HP--150HP), combine harvester(wheat ,corn,rice,potato), straw chopper and machine parts. Specification of JY-YS-4B1. The ... inland area with corn growing interval of 450-550mm. The harvester reaps front to front, which can raise working efficiency and ... of crushing and returning straws to fields. 4 Rows Corn Combine Harvester with peeling machine JY-YS-4B