The hyperspectral estimation of soil organic matter shows a great advantage compared with the traditional soil agrochemical analysis method, which conforms to the urgent need of modern agricultural development. Many models have studied the hyperspectral estimation model of soil organic matter at home and abroad. The estimation model has been developed from simple linear model to multivariate linear and nonlinear model. The commonly used modeling method is divided into linear method and nonlinear method. The applicability of the various methods ...
