The prediction model of nitrogen nutrition in cotton canopy leaves based on hyperspectral visible-near infrared band feature fusion
文献类型： 外文期刊
作者： Li, Liang 1 ; Li, Fei 4 ; Liu, Aiyu 1 ; Wang, Xiaoyu 2 ;
作者机构： 1.Hunan Agr Univ, Coll Agron, Changsha, Peoples R China
2.Hunan Inst Agr Informat & Engn, Changsha, Peoples R China
3.Hunan Acad Agr Sci, Changsha, Peoples R China
4.Hunan Cotton Sci Inst, Changde, Peoples R China
5.Hunan Intelligent Agr Engn Technol Res Ctr, Changsha, Peoples R China
关键词： chlorophyll; cotton; feature fusion; hyperspectral; multifractal detrended fluctuation analysis; nitrogen nutrient; SPAD
期刊名称：BIOTECHNOLOGY JOURNAL （ 影响因子：4.7； 五年影响因子：4.5 ）
ISSN： 1860-6768
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Hyperspectral remote sensing technology is becoming increasingly popular in various fields due to its ability to provide detailed information about crop growth and nutritional status. The use of hyperspectral technology to predict SPAD (Soil and Plant Analyzer Development) values during cotton growth and adopt precise fertilization management measures is crucial for achieving high yield and fertilizer efficiency. To detect the nitrogen nutrition in cotton canopy leaves quickly, a non-destructive nitrogen nutrition retrieval model was proposed based on the spectral fusion features of the cotton canopy. The hyperspectral vegetation index and multifractal features were fused to predict the SPAD value and identify the amount of fertilizer applied at different levels. The random decision forest algorithm was used as the model predictor and classifier. A method was introduced which was widely used in the fields of finance and stocks (MF-DFA) into the field of agriculture to extract fractal features of cotton spectral reflectance. Comparing the fusion feature with multi-fractal feature and vegetation index, the results showed that the fusion feature parameters had higher accuracy and better stability than using a single feature or feature combination. The R-2 was as high as 0.8363, and the RMSE was 1.8767%. Our intelligent model provides a new idea for detecting nitrogen nutrition in cotton canopy leaves rapidly.
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