Study on the Calculation and Analysis of Effective Utilization Coefficient of Farmland Irrigation Water in Yulin City
Optimizing agricultural strategies and improving the efficiency of irrigation water use play a vital role in alleviating water scarcity and related environmental problems.On the basis of following the principles of representativeness,feasibility and stability,31 sample irrigation areas were selected according to the distribution characteristics of irrigation areas in Yulin City.The effective utilization coefficient of irrigation water in the selected sample irrigation areas was calculated,and then the weighted average method was used to obtain the coefficients of irrigation areas of different sizes with gross irrigation water consumption as the weight,and the effective utilization coefficient of irrigation water in the city in 2023 was evaluated and analyzed for rationality.The results show that the application of the head-to-tail method simplifies the calculation workflow,reduces the impact of uncertain factors,makes the calculation process more convenient and the results more reliable.In 2023,the effective utilization coefficient of farmland irrigation water in Yulin City is 0.570,of which the effective utilization coefficient of irrigation water in medium-sized irrigation areas is 0.4671,that in small irrigation areas is 0.4939,and that in pure well irrigation areas is 0.8041.The results of this study can provide a reference for government departments to make scientific decisions in the construction,management,operation and investment of water-saving projects in irrigation areas.
Irrigation water effective utilization coefficientHead-to-tail methodagricultural water conservationYulin City
万方数据
维普
