Design and Experiment of Orchard Air-Assisted Sprayer with Airflow Graded Control

文献类型： 外文期刊

第一作者： Feng, Fan

作者： Feng, Fan;Zhai, Changyuan;Hao, Jianjun;Feng, Fan;Dou, Hanjie;Zhai, Changyuan;Zhang, Yanlong;Zou, Wei;Dou, Hanjie;Zou, Wei

作者机构：

关键词： orchard sprayer; variable-rate spraying; variable air inlet area; airflow graded control; spray deposition; spray drift

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 1 期

页码：

收录情况： SCI

摘要： The orchard air-assisted sprayer exhibits strong droplet penetration, allowing uniform adhesion on both the front and back surfaces of leaves. The spray deposition and spray drift are influenced not only by the amount of pesticide but also by the airflow provided by the air-assisted system. To meet the requirements for regulating airflow and pesticide application in orchards, a method based on the iris structure for continuous adjustment of the air inlet area was proposed. An airflow control mechanism for orchard air-assisted sprayers, which is easy to install, was developed, and a circular recirculating pressure-stabilized spray system was designed. Additionally, an orchard sprayer supporting graded airflow control was developed. Experiments were conducted to assess airflow variation within the tree canopy and the spray deposition and spray drift under different airflow levels. The results showed that the average airflow attenuation rates in the canopy were 63.0%, 71.8%, and 82.5% for the leaf areas and canopy thicknesses of 826.5 cm2, 1409.8 cm2, and 1931.1 cm2, and 1.5 m, 2.0 m, and 2.5 m, respectively. Graded variable control of airflow based on canopy variation helps improve droplet uniformity within the canopy and reduce spray drift in non-target areas. When the airflow in the middle of the tree canopy exceeds 1.50 m/s, the spray deposition ratio on both sides of the leaves increases to 83.55%, and the coefficient of variation in the droplet deposition on both sides is less than 33.24%. These findings provide support for pesticide precision application and spray drift control in orchards.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序