Because to the diversity of sample sizes used in performance evaluations of seed metering mechanisms, the objective of this study was to determine the sample size for laboratory experiments with horizontal plate and pneumatic seed meters, and treatment effects in the corn seed distribution. For this, experiment was conducted under laboratory conditions, according to the international standard ISO 7256/1. The treatments comprised a combination of four metering mechanisms (two pneumatic and two horizontal plate) with three sowing speeds, 0.7, 1.4 and 2.1 m s(-1). Methods were used for determining the sample size, sampling intensity and adapted bootstrap. Regarding the distribution of seeds, the meter mechanisms studied show no differences in the regularity of distribution, quality dropped with increasing speed. Referring to the sample size, can be reduced to 103 seed spacing with error level of 5 of the sample mean for the corn, independent of seeding speed and metering system used.
展开▼
机译：由于种子计量机制性能评估中使用的样本量多种多样，本研究的目的是确定卧式平板式和气动式播种仪实验室实验的样本量，以及玉米种子分布中的处理效果。为此，根据国际标准ISO 7256 / 1在实验室条件下进行了实验。处理包括四种计量机构（两种气动和两种水平板）的组合，具有三种播种速度，分别为 0.7、1.4 和 2.1 m s（-1）。方法用于确定样本量、抽样强度和适应的引导。关于种子的分布，所研究的计量机制显示分布的规律性没有差异，质量随着速度的增加而下降。参考样本量，可以减少到103粒间距，误差水平为玉米样本平均值的5%，与播种速度和使用的计量系统无关。
展开▼
