单垄双行马铃薯施肥覆膜播种机工作参数优化

Optimization of working parameters of potato planter with fertilizer and mulching

为获得单垄双行马铃薯施肥覆膜播种机的最佳工作参数,通过改变单垄双行马铃薯施肥覆膜播种机播种作业性能指标的4个主要参数:机具前进速度、旋耕刀组刀头线速度、搅龙轴转速和覆土圆盘倾角,以播种合格率、膜上覆土厚度为评价指标进行马铃薯播种试验。结合正交试验,应用综合评分法得出了该机具作业时各参数的最优组合:机具前进速度为0.65 m·s^(-1)、旋耕刀组刀头线速度为0.90 m·s^(-1)、搅龙轴转速为950 r·min-1、覆土圆盘倾角为35°。根据该最优组合作业参数进行试验验证,试验结果表明,在此优化试验条件下,作业机播种合格率均值可达92.6%,膜上覆土厚度均值为40.1 mm,符合马铃薯种植机质量评价技术规范要求。

In order to obtain the optimal working parameters of the potato seeder with fertilization and mulching, a study of performance was carried out through changing the 4 major operational parameters as machine speed, line speed of rotary blade, speed of auger shaft and angle of disk coverer. The seeding rate and the thickness of the covering soil with plastic film were evaluated. Combined the orthogonal experiment, the optimal combination of each working parameter was obtained by applying the comprehensive evaluation method. The machine advancing speed of 0.65 m ？ s _ 1, line speed of rotary blade of 0.90 m？ s _ 1, speed of auger shaft of 950 r ＇min-1, angle of disk coverer of 35° were the optimal combi-nation of operating parameters. According the optimal combination of operating parameters, the experiment results showed that under the optimized test conditions the average seeding was 92.6% and the average thickness of the covering soil by plastic film was 40.1 mm, which meets the technical specifications of quality evaluation of potato seeder with fertilization and mulching.