Abstract: In practical harvesting working, repeated cutting area, fail to cut area and one time cutting area are different because of abrasion of the cuter.

• 文章摘要: 在联合收割机收获作业中，由于往复式切割器不同程度的磨损，使切割图中重割区、漏割区及一次切割区的面积也在不断地发生变化。