Study On Drip Irrigation And Infiltration Canal Method Under Surface Water Film In Chifeng Area

Subsurface drip irrigation and infiltration canal method is a method of surface water treatment based on the technology of subsurface of the membrane in the field drip irrigation,which is in view of the current situation that the scarcity of water resources in Chifeng area,the degree of the excavation utilization of surface water is only 42% and serious overextraction of groundwater.It is also based on the analysis of the influence of different water level,water temperature and water quality on infiltration canal method in the irrigation area NiuJia Vallage,Karakqin County.And through the comprehensive comparison with the microfilter method,the advantages of the seepage canal method in terms of applicable conditions,benefits and the operation of construction were found out.The main research results are as follows:(1)The infiltration canal method has little limitations in application.It is suitable for different scale of irrigated areas,and It can cover the whole irrigated areas.Also,the flow stability is high,and the influence of different water temperature and water quality on the seepage canal flow production is small,and the influence on the water level can be effectively avoided through the construction of reservoir engineering measures.(2)Through a comprehensive comparison with the investment and benefit of the micro-filter method,the investment of the project of infiltration canal method is only 264 yuan per acre,which is less than the per-acre investment of the micro-filter method.At the same time,the yield of surface drip irrigation is 5.88% higher than that of subsurface drip irrigation.(3)Compared with the microfilter method,the infiltration channel method can save 23,400 yuan per year in operation.The results of this study provide a new direction for development of water-saving in irrigated areas,a solution for efficient development of surface water resource and the index for displacement of underground water,and also statistical and technical support for the promotion of surface water membrane drip irrigation and infiltration canal method in Chifeng area.