Agricultural water irrigation distribution method and system and terminal equipment

The invention discloses an agricultural water irrigation distribution method and system and terminal equipment, and the method comprises the following steps: obtaining target region data; inputting the obtained target area data into a preset model; the preset model is constructed through an interval parameter planning method, a Markov chain model, a two-stage stochastic planning method and a fully infinite planning method; and outputting an agricultural water irrigation distribution result of the target area. The preset model is constructed through an interval parameter planning method, a two-stage stochastic planning method and a full-infinite planning method, uncertain information such as the interval number, random distribution and the function interval number is considered, the uncertainty and complexity of system data are solved, the method can carry out economic tracing on irrigation behaviors violating constraints, and the method has the advantages of being high in practicability and easy to popularize