[1] Jackson R D. Advanced Irrigation, 1982, 1: 43.
[2] Lascano R J. Agronomy Journal, 2000, 92: 821.
[3] Li H, Payne W A, Michels J, et al. Environmental and Experimental Botany, 2008, 63: 305.
[4] Knipling E B. Remote Sensing of Environment, 1970, 1: 155.
[5] Thomas J R, Namken L N, Oerther G F, et al. Agronomy Journal, 1971, 63: 845.
[6] Tucker C J. Remote Sensing of Environment, 1980, 10: 23.
[7] Zarco-Tejada P J, Rueda C A, Ustin S L. Remote Sensing of Environment, 2003, 85: 109.
[8] Cheng Y B, Zarco-Tejada P J, Riano D, et al. Remote Sensing of Environment, 2006, 105: 354.
[9] Clevers J G P W, Kooistra L, Schaepman M E. International Journal of Applied Earth Observation and Geoinformation, 2008, 10: 388.
[10] Seeliga H D, Hoehna A, Stodiecka L S, et al. Remote Sensing of Environment, 2008, 112: 1445.
[11] Ceccato P, Flasse S, Tarantola S, et al. Remote Sensing of Environment, 2001, 77: 22.
[12] Deng Julong. Introduction to Grey Mathematics Resources Science. Wuhan: Huazhong University Press, 2010 5-28. Introduction to Grey Mathematical Resource Science.
[13] Penuelas J, Filella I, Biel C, et al. International Journal of Remote Sensing, 1993, 14: 1887.
[14] Schlerf M, Atzberger C, Udelhoven T, et al. A. Mueller (Ed.), 3rd Workshop on Imaging Spectroscopy, Herrsching, Germany, 2003. 559.
[15] Ustin S L, Roberts D A, Gardner M, et al. 2002. Proceedings of the 2002 IEEE IGARSS and 24th Canadian Symposium on Remote Sensing, Toronto, Canada, 24-28 June 2002, pp. 796.
[16] Hunt E R, Rock B N. Remote Sensing of Environment, 1989, 30: 43.
[17] Wang L L, Raymond E Hunt Jr, Qu J J, et al. Remote Sensing of Environment, 2011, 115: 836.
[18] Pimstein A, Eitel J U H, Long D S, et al. Field Crops Research, 2009, 111: 218.