[2] Weindorf D C, Bakr N, Zhu Y D. Advances in Agronomy, 2014, 128: 1.
[3] Qu F, Ren D. Sensors, 2016, 16(1): 89.
[4] Wang C, Pan X. Soil Science Society of America Journal, 2016, 80(5): 1393.
[5] Zheng Kaiyi, Zhang Xuan, Tong Peijin, et al. Chinese Chemical Letters, 2015, 26(3): 293.
[6] Chen Tianbing, Liu Muhua, Huang Lin, et al. Chinese Journal of Analytical Chemistry, 2016, 44(7): 1029.
[9] Dhanoa M S, Barnes R J, Lister S J. Applied Spectroscopy, 1989, 43(5): 772.
[10] Losada P P, Lozano J S, Rodríguez V G, et al. Vibrational Spectroscopy, 1993, 5(2): 245.
[11] Savitzky A, Golay M J E. Analytical Chemistry, 1964, 36(8): 1627.
[12] Park K S, Ko Y H, Lee H, et al. Chemom. Intell. Lab. Syst., 2001, 55(1-2): 53.
[13] Isaksson T, Ns T. Applied Spectroscopy, 1988, 42(7): 1273.
