Estimation model construction method and device, estimation method and device, computer equipment and medium

The invention discloses an estimation model construction method, an estimation method, an estimation device, computer equipment and a medium, in the estimation model construction method, the computer equipment obtains spectral data of a pasture quadrat and withered pasture biomass of the pasture quadrat at preset time intervals during pasture withering; after the multiple pieces of spectral data are obtained, determining a revised withered grass vegetation index corresponding to each piece of spectral data based on a preset equation; and finally, carrying out linear regression by utilizing the revised withered grass vegetation index corresponding to each piece of spectral data and the withered grass biomass obtained simultaneously with each piece of spectral data, and fitting to obtain a mapping relation between the revised withered grass vegetation index and the withered grass biomass, namely an estimation model of the withered grass biomass. The method makes up the blank in the field of withered grass resea