Blackmore B S.Developing the principles of precision farming[J].Proceedings of Agrotech,Barretos,Brazil,1999,11(6):15～19.
[2]
Christensen S,Heisel T.Patch spraying using historical,manual and real time monitoring of weeds in cereals[J].Zeitschrift für Pflanzenkrankheiten and Pflanzenschutz,Sonderheft,XVI,1998,16:257～265.
Giles D K,Henderson G W,Funk K.Digital control of flow rate and spray droplet size from agricultural nozzles for precision chemical application[C]//Proceedings of the 3rd International Conference in Precision Agriculture,ASA,CSSA and SSSA,Madison,WI,1996:729～738.
