Optimal Planning Mathematical Model of Regional Agricultural Water-saving and Its Application
To adjust crop patterns and develop water saving irrigation is the main agricultural water saving measures.To consider the relationship between adjustment of crops patters and development of water saving irrigation,the optimal planning mathematical model of the regional agricultural water saving,in which total minimum investment of regional add water saving irrigation engineering is the objective function,have been established based on type of water resource,agricultural utilizable water,crop patters,water saving irrigation status and suitability of each water saving irrigation technology.To use the mathematical model,the Xinjiang Hotan region optimal agricultural water saving plan that includes optimal crop patters and development scale of water saving irrigation for each crop have been put forward in 2020.To compare with Hotan region agricultural water saving plan by using conventional method,investment of the optimal plan reduces 19.92%.