Location: Mayingtang Village, Zhijiang Town, Zhijiang County, Hunan.
Orchard Specifications:
Rock Sugar Orange (Bingtangcheng) , 15 years old, 3m × 4m spacing.
Equipment & Parameters:
EAVISION 2021 All-Terrain (v3.15). Height 2.2m, Swath 2m, Speed 3m/s, Droplet Size 30µm, Volume 5 L/mu.
Control Group: 3WBD-18N Electric Knapsack Sprayer (Hollow Cone Nozzle, Pressure 0.2-0.3 MPa).
Results:
14 Days after last application (Flower Drop Stage): Drone efficacy was significantly higher than manual spraying.
40 Days after last application (Young Fruit Stage): Drone efficacy remained significantly higher than manual spraying.
Crop Safety: The drone-treated trees showed normal growth with no signs of phytotoxicity (crop injury).
