[2] [2] Fu Yuanyuan, Yang Guijun, Pu Ruiliang, et al. European Journal of Agronomy, 2021, 124: 126241.

[4] [4] Lumme J, Karjalainen M, Kaartinen H, et al. International Journal of Remote Sensing, 2008, 26(7): 563.

[5] [5] Mckinion J M, Willers J L, Jenkins J N. Computers and Electronics in Agriculture, 2010, 74(2): 244.

[7] [7] Interpreters S. Science, 2013, 118(3077): 13.

[8] [8] Liu J G, Pattey E, Miller J R, et al. Remote Sensing of Environment, 2010, 114(6): 1167.

[11] [11] Zha H, Miao Y, Wang T, et al. Remote Sensing, 2020, 12(2): 215.

[12] [12] Qiu Z, Ma F, Li Z, et al. Computers and Electronics in Agriculture, 2021，189: 106421.

[14] [14] Ata-UI-Karim S T, Yao X, Liu X J, et al. Field Crops Research, 2013, 149: 149.

[18] [18] Zhao Y, Yan C, Lu S, et al. Ecological Indicators, 2019，42(11)： 3152.

[25] [25] Tan K, Wang S, Song Y, et al. Chemometrics and Intelligent Laboratory Systems, 2017, 172: 68.

[26] [26] Ranjan R, Chopra U K, Sahoo R N, et al. International Journal of Remote Sensing, 2012, 33(20): 6342.

[32] [32] Tian Y, Gu K, Chu X, et al. Plant and Soil, 2014, 376(1-2): 193.

[33] [33] Chu X, Guo Y, He J, et al. Agronomy Journal, 2014, 106(5): 1911.