玉米切茬还田装置切断根茬影响因素试验

Experiment of Influencing Factors of Stubble Cutting in Corn Stubble Cutting and Returning Device

以切茬高度、切茬线速度和作业速度为因素,切茬装置切割玉米根茬的切断效果为指标,进行了三因素三水平正交试验,并用SPSS进行试验数据分析。结果表明切茬装置切割玉米根茬的切割率在给定因素水平上的较优组合是:切茬高度15 mm,切茬线速度12.385 m/s,前进速度0.8 m/s。对切茬高度做了单因素试验,用Origin进行数据拟合并绘图,计算显示在固定切茬线速度为12.385 m/s、前进速度为0.8 m/s下,完成切茬作业的切茬高度最高值为22 mm。

In order to study the cutting effects of corn stubble cutting and returning device,orthogonal experiment was conducted from three factors,including stubble cutting height,stubble cutting linear velocity and operating speed.Each factors performed three levels.The experimental data were analyzed in SPSS software.The results showed that the optimal operation combination was:stubble cutting height of 15 mm,stubble cutting linear velocity of 12.385 m/s and forward speed of 0.8 m/s in a given level.Single factor experiment was conducted on stubble cutting height.The drawing was plotted and the data was fitted by Origin software.The computation indicated the highest value of stubble cutting height for finishing stubble cutting work was 22 mm under fixed stubble cutting linear velocity of 12.385 m/s and forward speed of 0.8 m/s.