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首页> 外文期刊>Applied Engineering in Agriculture >FIELD VALIDATION OF SEED METER PERFORMANCE AT VARYING SEEDING RATES AND GROUND SPEEDS
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FIELD VALIDATION OF SEED METER PERFORMANCE AT VARYING SEEDING RATES AND GROUND SPEEDS

机译：种子仪表性能下变化的播种率和地速验证

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摘要

High planter performance requires achieving near-perfect seed meter performance in the field during planting. In-field meter performance can be impacted by several factors including meter setup, ground speed, seeding rate, planter vibration, and field conditions. A study was conducted to evaluate the field performance of two different seed meters (John Deere Standard and Precision Planting eSet) at varying seeding rates and ground speeds during planting. Study treatments consisted of planting corn at seeding rates of 49,000, 59,000, 69,000, 79,000, and 89,000 seeds ha(-1) at four different ground speeds of 6.1, 7.1, 8.2, and 9.5 km h(-1). These ground speeds and seeding rates were implemented in a strip-split plot design in the field with seeding rates blocked within the individual ground speed replications. Field tests were performed by uploading a variable-rate seeding prescription map into the planter rate controller and then travelling at the desired ground speed for each planter pass. Field data collection consisted of measuring plant population and plant spacing in the plots separately for each seed meter. Meter performance was evaluated by computing percent skips, multiples, singulation, coefficient of variation (CV), and crop emergence from the field data. Statistical analysis on field data suggested that the percent skips, singulation, CV, and crop emergence were significantly (p0.05) affected by the seeding rate, and the ground speed did not have any significant (p>0.05) effect on these variables. The percent multiples and CV values also differed significantly (p0.05) between the John Deere Standard and Precision Planting eSet meter at different ground speed and seeding rate treatments. The percent skips (0.5-3.8%) observed in the field data were, on average, higher than the percent multiples (0.0-1.8%) for both seed meters. The percent skips in general decreased with an increase in the seeding rate whereas no particular trend was observed in the percent multiples. The singulation values varied between 96.0% and 99.4%, and they were not statistically different between the seed meters. The percent CV values increased with an increase in the seeding rate indicating higher variability in plant spacing with increases in the seeding rate. The mean percent emergence for both seed meters ranged from 92.8% to 99.3%, and it was influenced by the seeding rate for the JD Standard meter. A weak association (R-2 values between 0.2028 and 0.6587) between the meter performance parameters (percent skips, singulation, and CV) and the meter speed was determined for both seed meters. Results from the study suggested that meter performance was significantly affected by the seeding rate, and the type of seed meter had a significant impact on percent multiples and CV (plant spacing) values attained during planting.
机译：高种植者性能需要在种植过程中实现近乎完美的种子表性能。现场仪表性能可能受到仪表设置，地速，播种率，种植者振动和现场条件的若干因素影响。进行了一项研究，以评估两种不同种子表（John Deere标准和精密种植ESET）的场效，种植过程中的种子率和地面速度。研究治疗包括在49,000,59,000,69,000,79,000和89,000个种子HA（-1）的播种速率下的种植玉米，以6.1,7.1,8.2和9.5 km H（-1）。这些地速和播种率在该领域的条带分开的绘图设计中实施，其中播种速率被阻塞在各个地速复制内。通过将可变速率播种处方地图上传到植物速率控制器中，然后以每个播种器通过以所需的地速进行现场测试。现场数据收集包括测量植物种群，分别为每种种子表分别测量植物群和植物间距。通过计算跳过，倍数，分割，变异系数（CV）的百分比来评估仪表性能，以及从现场数据的裁剪出现。关于现场数据的统计分析表明，受播种率影响的铅，分割，CV和作物出苗的百分比显着（P <0.05），并且对这些变量没有任何显着的（P> 0.05）效应。在不同地速度和播种速率处理的John Deere标准和精密仪之间，百分比倍数和CV值也有显着（P <0.05）。在现场数据中观察到的销售百分比（0.5-3.8％）平均高于种子表的倍数百分比（0.0-1.8％）。随着播种率的增加，百分比跳过一般下降，而在百分比中没有观察到特定趋势。分割值在96.0％和99.4％之间变化，种子表之间没有统计学不同。 CV值百分比随着种子间距的播种率的增加而增加，随着播种率的增加，植物间距较高。种子米的平均百分比从92.8％到99.3％，它受到JD标准仪表的播种率的影响。仪表性能参数（铅百分比百分比，销售和CV）之间的弱关联（0.2028和0.6587之间的R-2值）是针对种子表确定的。研究结果表明，仪表性能受到播种率的显着影响，种子表的类型对种植过程中达到的百分比和CV（植物间距）值具有显着影响。

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