首页|期刊导航|中国农业科学（英文版）|Relationship Between Hyperspectral Parameters and Physiological and Biochemical Indexes of Flue-Cured Tobacco Leaves
中国农业科学（英文版）2007，Vol.6Issue(6)：665-672,8.
Relationship Between Hyperspectral Parameters and Physiological and Biochemical Indexes of Flue-Cured Tobacco Leaves
Relationship Between Hyperspectral Parameters and Physiological and Biochemical Indexes of Flue-Cured Tobacco Leaves
摘要
Abstract
The experiment was set up for examining the physiological and biological indexes quickly and exactly, for obtaining information of tobacco-field fertilizing and tobacco growing. The ASD Field spec FR 2500 was used to measure spectra reflectance of flue-cured tobacco and the relationship between hyperspectral parameters and biochemical contents (total nitrogen, chlorophyll, carotenoid), and physiological indexes (fresh weight, dry weight, moisture content) of flue-cured tobacco leaves was studied by correlation and stepwise regression statistic methods at different nitrogen and potassium levels. The results indicated that the spectra curves of different treatments had obvious rules and great diversities. There were high correlations between different types of spectra parameters and ten physiological and biochemical indexes of flue-cured tobacco leaves. Hyperspectral characteristic variables of ten physiological and biochemical indexes were found through stepwise regression, and SDr/SDb was the characteristic variable closest to seven biochemical contents. Simultaneously, the R2 and regression coefficient of equations reached 0.05 significant level and the equations had good estimating effects through the examination of other samples. Accordingly, this study suggested that the ten physiological and biochemical indexes could be estimated quickly by the estimating models, at the same time nitrogen-potassium fertilization and growth condition of flue-cured tobacco could be inspected.关键词
flue-cured tobacco leaves/hyperspectral parameters/physiological and biochemical indexesKey words
flue-cured tobacco leaves/hyperspectral parameters/physiological and biochemical indexes分类
农业科学引用本文复制引用
LI Xiang-yang,LIU Guo-shun,YANG Yong-feng,ZHAO Chun-hua,YU Qi-wei,SONG Shi-xu..Relationship Between Hyperspectral Parameters and Physiological and Biochemical Indexes of Flue-Cured Tobacco Leaves[J].中国农业科学（英文版）,2007,6(6):665-672,8.基金项目
The study was supported by the Key Program of National Tobacco Monoply Bureau of China (110200401021). （110200401021）
