8Farooq M, Salyani M. Spray penetration into the citrus tree canopy from two air-carrier sprayers [J]. Transactions of the ASAE, 2002, 45(5): 1287-1293.
9Hogmire H W, Peterson D L. Pest control on dwarf apples with a tunnel sprayer [J]. Crop Protection, 1997, 16(4): 365-369.
10Gu J, Zhu H, Ding W. Unimpeded air velocity profiles of an air-assisted five-port sprayer [J]. Transactions of the Asabe, 2012, 55(5): 1659-1666.