CROP GROWTH MONITORING METHOD AND SYSTEM, DEVICE, AND MEDIUM

A crop growth monitoring method and system, a device, and a medium, relating to the technical field of artificial intelligence. The crop growth monitoring method comprises: obtaining normalized difference vegetation indexes of at least two sub-regions of a crop in a current region (S1); determining the growth state of the crop according to the obtaining time of the normalized difference vegetation indexes, wherein the growth state at least comprises a sowing period, a growing period, and a maturation period (S2); comparing, according to the growth state, the normalized difference vegetation indexes of the sub-regions with at least one reference range comprised in the growth state of the crop, and determining and counting the number of corresponding sub-regions located in the reference ranges (S3); and performing grading early warning according to the counted number of sub-regions (S4). According to the method, a plurality of normalized difference vegetation indexes of the crop in a current region are compared