Hu Heming, Kaizu Yutaka, Huang Jingjing, Furuhashi Kenichi, Zhang Hongduo, Li Ming, Imou Kenji
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
Hunan Agricultural Equipment Research Institute, Changsha, China.
Front Plant Sci. 2022 Jul 7;13:811256. doi: 10.3389/fpls.2022.811256. eCollection 2022.
In plant protection, the increasing maturity of unmanned aerial vehicle (UAV) technology has greatly increased efficiency. UAVs can adapt to multiple terrains and do not require specific take-off platforms. They do well, especially in farmland areas with rugged terrain. However, due to the complex flow field at the bottom of a UAV, some of the droplets will not reach the surface of a plant, which causes pesticide waste and environmental pollution. Droplet deposition is a good indicator of the utilization rate of pesticides; therefore, this review describes recent studies on droplet deposition for further method improvement. First, this review introduces the flight altitude, speed, and environmental factors that affect pesticide utilization efficiency and then summarizes methods to improve pesticide utilization efficiency from three aspects: nozzles, electrostatic sprays, and variable spray systems. We also point out the possible direction of algorithm development for a UAV's precision spray.
在植物保护领域，无人机（UAV）技术日益成熟，极大地提高了效率。无人机能够适应多种地形，且不需要特定的起飞平台。它们在地形崎岖的农田区域表现出色。然而，由于无人机底部的流场复杂，部分液滴无法到达植物表面，这导致了农药浪费和环境污染。液滴沉积是农药利用率的一个良好指标；因此，本综述介绍了近期关于液滴沉积的研究，以便进一步改进方法。首先，本综述介绍了影响农药利用效率的飞行高度、速度和环境因素，然后从喷嘴、静电喷雾和变量喷雾系统三个方面总结了提高农药利用效率的方法。我们还指出了无人机精准喷雾算法开发的可能方向。
