6GANZELMEIER H. Drift studies and drift reducing sprayers-a German approach [ M ]. Milwaukee, Wisconsin: ASAE Meeting Presentation. Paper No. 001024,2000.
7MAZET. Integral True Color Sensor-T039 Data Sheet[ EB/OL]. (2005 -03 - 07) http ://www. promis-eleetro-optics, nl/dee/05__peo_maz_lcc8, pdf.
8MAZeT GmbH. Multi-channel programmable gain transimpedance amplifier Data Sheet[ EB/OL]. (2009-03-01) http ://www. elsctronicspecifier. com/active-components/ Multi-channel programmable gain transimpedance amplifier as current signal amplifiers-for sensor-arrays, asp.
9王瑞福.单片机测控系统设计大全[M].北京:北京航空航天大学出版社,2002.
10Karaivazoglou N A,Tsotsolis N C, Tsadilas C D. Influence of liming and form of nitrogen fertilizer on nutrient uptake, growth, yield, and quality of Virginia ( flue-cured ) tobacco[J]. Field Crops Research, 2007,1013 (1-4) : 52-60.
