Method and system for identifying storage year of folium artemisiae argyi based on wavelength variable weight value

The invention provides a method and system for identifying storage years of folium artemisiae argyi based on a wavelength variable weight value, and the method comprises the following steps: crushing and sieving folium artemisiae argyi in different storage years to prepare a to-be-detected sample, and detecting the original spectrum of the sample by using a near infrared spectrometer; the influences of the PLS-DA modeling method and the OPLS-DA modeling method on the identification model are compared, and the optimal modeling method is obtained; all wavelengths and wavelengths with wavelength variable weight values greater than 1 in partial least squares modeling are screened; the accuracy rate of the constructed Artemisia argyi storage year identification model is 100%; constructing a folium artemisiae argyi storage year detection partial least square model: establishing a storage year detection model by utilizing the spectral data of the calibration set sample, and verifying the accuracy of the model by uti