The research on the coupling of regional agricultural water and land resources system based on the system dynamics

In this paper, regional agricultural land and water resources system dynamics model and the index system of agricultural water and land resources-economy coupling coordination degree are established, then take Shandong province as an example for empirical analysis. Adjusting the control variables of system dynamics model to get four different crop planting patterns and then to do a comparative analysis of the agricultural economic benefits and water and land resources coupling coordination degree of them. Come to a conclusion that adjusting the planting construction of the crops can improve the coupling degree of water and land resources and the efficiency of the agricultural economy of Shandong province.