Analysis and application of spectral characteristic of winter wheat in early growth periods

作者：Li Shuqiang; Li Minzan^*; Li Xiuhua; Zhao Ruijiao

来源：Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(2): 165-169.

DOI：10.6041/j.issn.1000-1298.2012.02.032

• Binomial models
• Canopy
• Canopy spectral reflectance
• Chlorophyll contents
• Early growth
• First derivative
• Ground based
• Linear prediction coding
• Red edge
• Red edge inflection points
• Reflectance spectrum
• Spectral characteristics
• Spectral parameters
• Spectral reflectances
• Surface ground
• Testing method
• Winter wheat

The canopy spectral reflectance and chlorophyll content were measured and analyzed by different testing methods in turning green and jointing stage, which were most important periods for winter wheat growth. The characteristics of correlation indicated that the test results of the canopy spectral were affected by field without covering at turning green stage. The red edge inflection point as one of the most important spectral parameters was analyzed at winter wheat turning green and shooting stages based on the first derivative of reflectance spectra. The results showed that the correlation of red edge and chlorophyll was better for forecasting the chlorophyll content in the turning green stage which was lower surface ground coverage. The linear prediction coding model and the binomial model were found for the chlorophyll content prediction.

• 出版日期2012
• 单位中国农业大学; 河南大学