3Kirk,Iva W.Measurement and predication of helicopter spray nozzle atomization[J].Transactions of the American Society of Agricultural Engineers,2002,45 (1):27-37.
4Yubin L,Steven J T,Yanbo H,et al.Current status and future direction of precision aerial application for sitespecific management in the USA[J].Cumputers and Electronics in Agriculture,2010,74:34-38.
6Huang Y,Hoffmann W C,Lan Y,et al.Development of a spray system for an Unmanned Aerial Vehicle platform[J].Applied Engineering in Agriculture,2009,25 (6):803-809.