Plant drought stress diagnostic method and device based on chlorophyll fluorescence imaging technology

The invention discloses a plant drought stress diagnostic method and a device based on chlorophyll fluorescence imaging technology. The plant drought stress diagnostic method comprises following steps: 1, sample set plants with known drought stress diagnosis results are subjected to dark adaptation, canopy chlorophyll fluorescence image data of the sample set plants are collected, and related characteristic parameters are extracted; 2, based on the collected chlorophyll fluorescence image data and chlorophyll fluorescence image characteristic parameters, multiple classifiers fusion is adopted to establish a plant drought stress identification model; 3, chlorophyll fluorescence image data and characteristic parameters of plants to be detected are collected via the method disclosed in step 1, and are introduced into the plant drought stress identification model for drought stress diagnosis. The plant drought stress diagnostic method is capable of providing chlorophyll fluorescence parameters, realizing visualiz