[1] |
Feng Yuxiang, He Weixun, Sun Zhongfu, et al. Climatological study on frost damage of winter wheat in China[J]. Acta Agron Sin, 1999, 25(3): 335-340. |
[2] |
|
[3] |
|
[4] |
Feng Yuxiang, He Weixun. Study of Frostbite[M]. Beijing: China Meteorological Press, 1996: 14-15. |
[5] |
|
[6] |
Tang Zhicheng, Sun Han. Analysis winter wheat freeze injury with NOAA remote sensing data [J]. Remote Sensing Information, 1989, 4: 37-39. |
[7] |
|
[8] |
Yang Bangjie, Wang Maoxin, Pei Zhiyuan. Monitoring freeze injury to winter wheat using remote sensing [J]. Transactions of the CSAE, 2002, 18(2): 136-140. |
[9] |
Zhang Xiaoyun, Chen Yuying, Su Zhansu, et al. A study on monitoring frost of main crop in the area of Ningxia by using remote sensing[J]. Remote Sensing Technology Application, 2001, 16(1): 32-36. |
[10] |
|
[11] |
|
[12] |
Zhang Xuefen, Chen Huailiang, Zheng Youfei, et al. Monitoring the freezing injury of winter wheat by remote sensing[J]. Joural Nanjing Institue Meteorology, 2006, 29(1): 94-100. |
[13] |
|
[14] |
Li Cunjun, Zhao Chunjiang, Liu Liangyun, et al. Retrieval winter wheat ground cover by short-wave infrared spectral indices in field and sensitivity analysis [J]. Transactions of the CSAE, 2004, 20(5): 159-164. |
[15] |
Li Cunjun, Wang Jihua, Liu Liangyun, et al. Automated digital image analyses for estimating percent ground cover of winter wheat based on object features[J]. Journal of Zhejiang University (Agri Life Sci), 2004, 30(6): 650-656. |
[16] |
|
[17] |
Lu Yanli, Hu Hao, Bai Youlu, et al. Effects of vegetation coverage on the canopy spectral and yield quantitative estimation in wheat[J]. Joural of Triticeae Crops, 2010, 30(1): 96-100. |
[18] |
|
[19] |
|
[20] |
Zhu Lei, Xu Junfeng, Huang Jingfeng, et al. Study on hyperspectral estimation model of crop vegetation cover percentage [J]. Spectroscopy and Spectral Analysis, 2008, 28(8): 1827-1831. |
[21] |
Wang Fangyong, Wang Keru, Li Shaokun, et al. Estimation of chlorophyll and nitrogen contents in cotton leaves using digital camera and imaging spectrometer[J]. Acta Agronomica Sinica, 2010, 36(11): 1981-1989. |
[22] |
|
[23] |
Zhang Dongyan, Huang Wenjiang, Wang Jihua, et al. In-situ crop hyperspectral acquiring and spectral features analysis based on pushbroom imaging spectrometer[J]. Transactions of the CSAE, 2010, 26(12): 188-192. |
[24] |
|
[25] |
Lukina E V, Stone M L, Raun W R. Estimating vegetation coverage in wheat using digital images[J]. Journal of Plant Nutrition, 1999, 22(2): 341-350. |
[26] |
|
[27] |
|
[28] |
Karcher D E, Richardson M D. Quantifying turfgrass color using digital image analysis[J]. Turfgrass Science, 2003, 43: 943-951. |
[29] |
|
[30] |
Ribeiro A, Ranz J, Burgos-Artizzu X P, et al. An image segmentation based on a genetic algorithm for determining soil coverage by crop residues[J]. Sensors, 2011: 11, 6480-6492. |
[31] |
Casadesus J, Kaya Y, Bort J, et al. Using vegetation indices derived from conventional digital cameras as selection criteria for wheat breeding in water-limited environments[J]. Annual Applied Biology, 2007, 150: 227-236. |