[1] [1] Andrews M, Raven J A, Lea P J. Annals of Applied Biology, 2013, 163(2): 174.

[2] [2] Abdel-Rahman E M, Ahmed F B, van den Berg M. International Journal of Applied Earth Observation and Geoinformation, 2010, 12: S52.

[3] [3] Bell G E, Howell B M, Johnson G V, et al. HortScience, 2004, 39(5): 1130.

[5] [5] Miphokasap P, Honda K, Vaiphasa C, et al. Remote Sensing, 2012, 4(6): 1651.

[6] [6] Ulissi V, Antonucci F, Benincasa P, et al. Sensors, 2011, 11(6): 6411.

[7] [7] Bajwa S G, Mishra A R, Norman R J. Precision Agriculture, 2010, 11(5): 488.

[10] [10] Galvao R K H, Ara jo M C U, Jose G E, et al. Talanta, 2005, 67: 736.

[12] [12] Leardi R, Lupiáez González A. Chemometrics and Intelligent Laboratory Systems, 1998, 41(2): 195.

[13] [13] Araujo M C U, Saldanha T C B, Galvao R K H , et al. Chemometrics and Intelligent Laboratory Systems, 2001, 57: 65.

[14] [14] Huang G B, Zhu Q Y, Siew C K. Neurocomputing, 2006, 70(1): 489.

[15] [15] Huang G B, Wang D H, Lan Y. International Journal of Machine Learning and Cybernetics, 2011, 2(2): 107.