有的桂林3号联合收割机,作业时不同程度地存在粮食损失率大、清选不良的问题。除作物的干湿因素和机械的调整原因外,还应重视脱粒滚筒的技术状态。按要求,在收割小麦和籼稻时,脱粒滚筒的齿杆应为4根。早期生产的联合收割机出厂时安装6根齿杆,应根据收 Some combine harvester Guilin No. 3, operating to varying degrees, there is a large food loss rate, the problem of poor cleaning. In addition to crop dry and wet factors and mechanical reasons for adjustment, but also should attach importance to the technical state of threshing drum. On request, when harvesting wheat and indica rice, the bar of the threshing drum should be 4 pieces. Early production combine harvester factory installed 6 rack, should be based on income