The effects of field slope on planter seed spacing uniformity were evaluated for three different seed metering units (cell plate, finger pick-up, and flat plate) operating with medium round corn seed in a laboratory using the University of Nebraska planter test stand with an opto-electronic seed spacing sensor system. The metering units included a John Deere MaxEmergeTM Plus VacuMeter row unit with the standard cell corn plate, a John Deere MaxEmergeTM Plus VacuMeter row unit with the flat plate, and a John Deere MaxEmergeTM Plus row unit with the finger pick-up metering system. Planter seed spacing uniformity was measured using three parameters: ISO Miss index, ISO Multiples index, and Coefficient of Precision (CP3). Six replications for nine field slope treatments were conducted for each metering unit. The field slope treatments included: front-up (front of planter unit), front-down, right-up (right side of planter unit), and left-up (left side of the planter unit) each at field slope levels of 10% and 20%, and level. Slope and travel pattern had significant effects on the seed spacing uniformity for each of the three metering units tested. The finger pick-up was the least affected by slope as only the treatment of front-up at 20% slope had significantly worse seed spacing uniformity than the level treatment. For the cell plate metering unit, seed spacing uniformity was best with the planter on a level surface, or with the uphill-downhill travel pattern on a 10% slope, and on a 20% slope the uphill-downhill travel pattern had better seed spacing uniformity than the on-the-contour travel pattern. The finger pick-up metering unit had equally good seed spacing uniformity on a level surface and with either travel pattern on the 10% slope. On a 20% slope, the finger pick-up metering unit had better seed spacing uniformity with the on-the-contour travel pattern than with the uphill-downhill travel pattern. The flat plate metering unit had its best seed spacing uniformity with the front up on a 10% slope, followed by equivalent seed spacing uniformity between right up on a 10% slope and on a level surface. The flat plate metering unit had equivalent seed spacing uniformity between the travel patterns on a 10% slope, while on a 20% slope the uphill-downhill travel pattern had better seed spacing uniformity than the on-the-contour travel pattern.
展开▼
机译:使用内布拉斯加大学播种机试验台,在实验室中,对使用中等圆形玉米种子运行的三个不同的种子计量单元(单元板,手指拾取和平板)评估了田间倾斜度对播种机种子间距均匀性的影响。光电种子间距传感器系统。计量单元包括带有标准单元玉米盘的John Deere MaxEmerge TM sup> Plus VacuMeter行单元,带有平板的John Deere MaxEmerge TM sup> Plus VacuMeter行单元以及约翰·迪尔(John Deere)MaxEmerge TM sup>带有手指拾取计量系统的行单元。使用三个参数测量播种机种子间距的均匀性:ISO缺失指数,ISO倍数指数和精确度系数(CP3)。每个计量单元进行了九次野外坡处理的六次重复。田间坡度处理包括:田间坡度级别为10时,正面朝上(种植单元的前部),正面朝下,右侧(种植单元的右侧)和左侧朝上(种植单元的左侧)。 %和20%,以及级别。对于测试的三个计量单位中的每一个,坡度和行进方式对种子间距均匀度都有显着影响。手指拾取受坡度的影响最小,因为只有在坡度为20%的条件下进行前锋处理的种子间距均匀性明显低于水平处理。对于细胞板计量单元,播种机在水平表面上的种子间距均匀性最好,或者在坡度为10%的上坡-下坡行驶方式下,在坡度为20%的坡面-下坡行驶方式下,种子间距更好均匀性要比轮廓上的旅行模式高。手指捡拾计量装置在水平表面上具有同样好的种子间距均匀度,并且任一行进模式的斜率均为10%。在坡度为20%的情况下,手指捡拾计量装置的轮廓间距行驶模式比上坡-下坡行驶模式的种子间距均匀性更好。平板计量装置的种子间距均匀性最好,其正面朝上的斜度为10%,然后在10%的斜面上和水平表面上的等价种子均匀度。平板计量单元在10%的坡度上具有相同的行进模式种子间距均匀度,而在20%的坡度上,上坡-下坡行进模式具有比沿途行驶模式更好的种子间距均匀度。
展开▼