roughage

• 7 . 3 million hectares are used in the production of tame hay and fodder crops fodder is roughage left over from other crops such as straw , corn and sugar beets
  730万公顷的土地用于生产人工草地干草和饲料作物饲料是其它一些作物如麦杆玉米和甜菜留下的粗糙原料。