“跑粮”是联合收割机在作业中存在的较为普遍的问题。一般“跑粮”的正常范围是:每收获50千克小麦,田间跑粮0.5~1.5千克;每收获50千克水稻,田间跑粮1~2千克。因此,控制“跑粮”是提高联合收割机作业质量和经济效益的关键。联合收割机的总损失包括割台损失、脱粒损失、分离损失和清洗损失四部分。割台损失:拨禾轮将麦秆拨贴到 “Running grain ” is the more common problem that combine harvesters have in their homework. Normal “running grain ” the normal range is: each harvest of 50 kg of wheat, field running grain 0.5 to 1.5 kg; harvest 50 kg of rice, field running grain 1 to 2 kg. Therefore, the control “Run food ” is the key to improve the quality and economic benefits of the combine harvester. The total loss of the combine harvester includes the loss of header, threshing loss, separation loss and cleaning loss of four parts. Header loss: Reel will dial the straw