Analysis of rice quality of different varieties and characteristics of canopy hyperspectral reflectivity in Panjin area
The quality characteristics of 8 varieties of rice in Panjin area in 2022 were analyzed.The correlation be-tween processing quality,appearance quality,cooking and taste quality,nutritional quality of rice grains and origi-nal spectral reflectance,first derivative spectrum,continuum removed spectrum of the rice canopy at maturity were also examined.The results show that Yanjing 939 has better processing quality;Jindao 106(Line 9)has better ap-pearance quality;Jindaoxiang 103 has better cooking quality;Panjing 968(Line 3)has better nutritional quality.The correlation between raw spectral reflectance and brown rice rate is good with correlation coefficients reaching at 0.767 in the wavelength bands of 731～1131 nm and 1150～1360 nm.The correlation between brown rice rate and the first derivative spectrum is best reaching a highly significant level at 1459 nm with a correlation coefficient of 0.867.The correlations between chalkiness degree,chalky grain rate and continuum-removed reflectance are better at 1804 nm,reaching a significant negative correlation with correlation coefficients of-0.979 and-0.983,respectively.The correlation between length-width ratio and the original spectrum is good with the highest correla-tion coefficient of 0.849 at 659 nm.The taste value contained in cooking quality,the amylose content,and the pro-tein content included in nutritional quality all show good correlation with continuum removed spectrum.
Quality of rice grainCanopy spectral reflectanceFirst derivative spectrumContinuum removed spec-trum
国家科技期刊平台
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