为确定切割速比、压辊圆周速度和拨禾速比3个山地牧草调制机关键设计参数，依据牧草收获农艺要求，以作业割茬高度低、重割次数少、压扁比例高及碎草损率失小为试验评价指标，结合正交试验研究，应用综合平衡法，得到各影响因素的最优方案组合：切割速比为2．5、压辊圆周速度为4．2 m·s-1、拨禾速比为2．5。按照该最优方案进行试验，试验结果表明：作业割茬为42 mm、重割率为0．73％、压扁比例为46．5％及碎草损失率为2．3％，符合牧草收获的作业要求。%In order to determine the cutting speed ratio,press roller circumferential speed and reel speed ratio of mountain mower conditioner three key design parameters,an experiment was conducted in the right of requirements for pasture harvesting technology,with the low working stubble height,few recutting times,high flattening ratio and small broken grass loss rate as evaluating indicators .Through the orthogonal experiments,application comprehensive balance method to obtain the optimal combination working parameters:the cutting ration was 2 .5,the press roller circumferential speed was 4 .2 m·s-1 ,the reel speed ratio was 2 .5 .Measured with the optimal combination of operational parameters, the results showed that,the working stubble was 42 mm,the recutting rate was 0 .73%,the flattening ratio was 46 .5%and the crushed grass loss rate was 2 .3%,which could meet the demand of forage harvest operation .
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