从无人机应用方法和在一排作物上地面应用方法对滴滴大小,覆盖面和漂移潜力的比较
J Gibbs1, T M Peters2, L P Heck2
1Industrial Hygienist, Department of Occupational and Environmental Health, University of Iowa, and Owner, Gibbs Ventures and Consulting, Iowa City, Iowa.
Transactions of the ASABE
|September 5, 2023
概括
与地面喷雾器相比,无人驾驶飞行器 (UAV) 为中西部作物提供了精确的农药应用,显示出较小的水滴和减少的漂移潜力. 这使得有针对性的"点"或"带"喷能够改善害虫控制.
科学领域:
- 农业工程 农业工程
- 虫害管理 虫害管理 虫害管理
- 精准农业 精准农业 精准农业
背景情况:
- 无人机在全球范围内越来越多地用于农药应用,但中西部排列作物的采用却滞后.
- 传统的地面喷雾器是大型农业中农药应用的标准.
研究的目的:
- 为了比较无人机喷雾器的滴滴大小,覆盖范围和漂移潜力,与中西部玉米田的地面喷雾器相比.
- 评估无人机在针对性农药应用中的有效性.
主要方法:
- 进行了实地试验,比较无人机 (带有和没有杆) 和地面 (常规和脉冲) 喷雾器.
- 测量了液滴大小,沉积覆盖面 (液滴cm-2),以及垂直分布.
- 对每种应用方法的下风农药漂移潜力进行了评估.
主要成果:
- 无人机产生的水滴比地面喷雾器 (303423μm) 小得多 (112179μm).
- 无人机提供了局部化,高滴水覆盖,而地面喷雾器则在整个场宽范围内提供了更广泛的覆盖范围.
- 尽管水滴较小,但无人机与地面喷雾器相比,对下风漂移的可能性较小.
结论:
- 无人机显示出"点"或"带"农药应用的潜力,有利于害虫控制和漂移减少.
- 无人机的滴滴尺寸较小,喷雾量较小和灵活性有助于其有效性和有针对性喷雾的潜力.
- 调查结果表明,无人机可以成为中西部农业综合防治害虫的有价值工具.
相关概念视频
01:28Pipe Flowrate Measurement: Problem Solving
A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is achieved...
01:29Application of Linearization and Approximation
A drone flying through complex terrain often relies on more than one sensing method to estimate small changes in altitude. Along with direct measurements, air pressure provides a useful indirect indicator of vertical movement. Atmospheric pressure decreases as altitude increases, and this relationship is commonly described using an exponential model. Although accurate, converting pressure measurements into altitude values requires calculations that are too complex to perform repeatedly during...