| abstract |
The invention belongs to the technical field of nondestructive detection of crop biochemical components spectrum, and discloses a method for estimating total nitrogen content of crop canopy leaves. feature data set; then, the sensitive spectral variable set with the smallest collinearity is selected from the sensitive spectral feature data set, the location feature data set and the vegetation index feature data set; finally, the sensitive spectral variable set is subjected to partial least squares regression PLS construction. model to obtain the LNC estimation model of the total nitrogen content of crop canopy leaves. The model can accurately estimate the total nitrogen content of crop canopy leaves, which is not much different from the measured value. |