Nine-hole sampling method-based in-box flue-cured tobacco lamina density prediction model establishment method and device

The embodiment of the invention provides a nine-hole sampling method-based in-box flue-cured tobacco lamina density prediction model establishment method and device, and the method comprises the steps: obtaining a sample flue-cured tobacco lamina box with a preset weight gradient, and obtaining a microwave signal value of the sample flue-cured tobacco lamina box through a microwave method; detecting the density value of the sample flue-cured tobacco lamina box through a nine-point detection method; comparing the microwave signal values and the density values of the sample flue-cured tobacco lamina boxes with different weights in the preset weight gradient, and obtaining the correlation between the microwave signal values and the density values according to the comparison result; when the correlation is greater than a preset threshold value, performing data correction on microwave signal values and density values of different types of sample flue-cured tobacco lamina boxes according to the microwave signal val