Manual spray operations of conventional pesticides in the greenhouse are highly dependent on labor and have been associated with potential health risks. To overcome the constraints the narrow crop space and the complexity of auxiliary facilities impose on ground autonomous sprayers, this study developed an autonomous air-assisted sprayer based on a single hanging track for solar greenhouses. The spray distribution from the boom and spray patterns were evaluated. Laboratory tests were conducted to investigate the airflow distribution and static spray distribution of the boom. The sprayer was tested on cucumber crops in a solar greenhouse to evaluate the performances of two spray patterns: spraying during boom rising-traveling (P1) and during traveling-falling (P2). The coefficient of variation of the static axial spray distribution was 33% based on liquid collection. The coefficient of variation of axial and radial spray distribution of P1 and P2 (based on coverage rate) were 37.2% and 58.3%, as well as 46.3% and 69.4%, respectively. This confirmed that the motion direction of the boom strongly influenced the spray distribution. The structure of the airflow also affected the radial spray distribution. Moreover, the axial spray distributions of both spray patterns had high correlation coefficients of 0.921 and 0.889 with a static distribution detected in the laboratory. Optimizing the configuration of the nozzles and airflow of the boom is expected to further improve the uniformity of the radial and axial spray distributions. This autonomous air-assisted sprayer based on single hanging track provides a predictable solution for plant protection in solar greenhouses.

温室中常规农药的手动喷洒操作高度依赖人工，并具有潜在的健康风险。为了克服狭窄的作物空间和地面自动喷雾器所需要的辅助设施的复杂性，本研究开发了一种基于单一悬挂式日光温室的自动空气辅助喷雾器。对动臂的喷雾分布和喷雾方式进行了评估。进行了实验室测试以调查喷杆的气流分布和静态喷雾分布。在日光温室的黄瓜作物上对喷雾器进行了测试，以评估两种喷雾模式的性能：在臂杆上升-行进期间（P1）和行进下降期间（P2）进行喷雾。基于液体收集，静态轴向喷雾分布的变化系数为33％。P1和P2的轴向和径向喷雾分布的变化系数（基于覆盖率）分别为37.2％和58.3％，以及46.3％和69.4％。这证实了动臂的运动方向极大地影响了喷雾分布。气流的结构也影响了径向喷雾分布。此外，两种喷雾模式的轴向喷雾分布均具有0.921和0.889的高相关系数，并且在实验室中检测到静态分布。优化喷嘴的配置和动臂的气流有望进一步改善径向和轴向喷雾分布的均匀性。