[1] Shanahan J F, Schepers J S, Francis D D, et al. Agronomy Journal, 2011, 93: 583.
[2] Berry P M, Spink J. Field Crops Research, 2012, 137: 19.
[3] Zhang Jingcheng, Gu Xiaohe, Wang Jihua, et al. Sensor Letters, 2012, 10(1-2): 580.
[4] Peake A S, Huth N I, Carberry P S, et al. Field Crops Research, 2014, 158: 1.
[5] Toshifumi Murakami, Mamiko Yui, Koichi Amaha. Computers and Electronics in Agriculture, 2012, 89: 70.