Scotford I M,Cumby T R,White R P,Estimation of the nutrient value of agricultural slurries by measurement of physical and chemical properties,Journal of Agricultural Engineering Research,1998(3).
[2]
Van Kessel J S,Reeves Ⅲ J B,On-farm quick tests for estimating nitrogen in dairy manure,Journal of Dairy Science,2000(8).
[3]
Yang Z L,Han L J,Li Q F,Estimating nutrient contents of pig slurries rapidly by measurement of physical and chemical properties,The Journal of Agricultural Science,2006(3).
[4]
Tunney H,Dry matter,specific gravity and nutrient relationships of cattle and pig slurry,EEC,Luxembourg,1979.
[5]
Tunney H,Slurry-meter for estimating dry matter and nutrient content of slurry,Elsevier Applied Science Publishers,New York,1985.
[6]
Nakatani M,Harada Y,Principal component analysis of near infrared spectra of animal waste compost,Soil Science and Plant Nutrition,1995(4).
[7]
Nakatani M,Harada Y,Kaga K,Near infrared spectroscopy analysis of the changes in quality of cattle wastes during composting processes,Soil and Fetility Society,1996(2).
[8]
Nam J J,Lee S H,Non-destructive analysis of compost by near infrared spectroscopy,Journal of the Chemical Society,2000(5).
[9]
Ko H J,Choi H L,Park H S,Prediction of heavy metal content in compost using near infrared reflectance spectroscopy,Animal Science,2004(12).
Stevens R J,O\'Bric C J,Carton O T,Estimating nutrient content of animal slurries using electrical conductivity,The Journal of Agricultural Science,1995(2).
[13]
Williams J R,Chambers B J,Smith K A,The development of user friendly systems for on-farm estimation of the available nitrogen content in solid manures and slurries[MAFF Open Contract CSA 2849],ADAS and IGER,UK,1996.
[14]
Chescheir G M,Westerman P W,Rapid methods for determining nutrients in livestock manures,Transactions of the American Society of Agricultural Engineers,1985(6).
[15]
Cross T,Wright P,Using electronic conductivity to determine ammonia content of dairy manure,Am.Soc.Agric.Eng.,St.Joseph,MI,1996.
[16]
Takashi A,Shimizu S,Koga T,Quick determination of total nitrogen,total carbon,and crude ash in cattle manure using near infrared reflectance spectroscopy,Soil Science and Plant Nutrition,1993(6).
[17]
Malley D F,McClure C,Martin P D,Compositional analysis of cattle manure during composting using a field-portable near-infrared spectrometer,Soil Science and Plant Nutrition,2005(4).
[18]
Huang G Q,Han L J,Yang Z L,Evaluation of the nutrient metal content in Chinese animal manure compost using nearinfrared spectroscopy (NIRS),Bioresource Technology,2008(17).
[19]
Aibrechta R,Joffreb R,Grosa R,Efficiency of near-infrared reflectance spectroscopy to assess and predict the stage of transformation of organic matter in the composting process,Bioresource Technology,2008(2).
Thompson W H,Leege P B,Millner P D,Test methods for the examination of composting and compost,Washington:US Composting Council,2000.
[22]
Saeys W,Mouazen A M,Ramon H,Potential for onsite and online analysis of pig manure using visible and near infrared reflectance spectroscopy,Biosystems Engineering,2005(4).
