Comprehensive Evaluation and Optimal Selection of Water Saving Irrigation in the Southeast Daxing'an Mountain Regions

In this paper,the various influencing factors in the implementation and operation process of different irrigation methods for field crops in Southeast hilly area are integratedly analyzed,a comprehensive and relatively perfect evaluation index system is put forward.During the evaluation,the analysis hierarchy process combined with expert evaluation method is used to decide the index weight and establish the evaluation model to objectively and quantitatively evaluate the comprehensive benefit of different irrigation methods.By comprehensive evaluation of different irrigation methods,such as pipe irrigation,drip irrigation under film,semi-fixation spray irrigation,sprinkler irrigation,combined with the actual situation of field crops agriculture production in hilly areas,the semi-fixation spray irrigation method is selected as the appropriate irrigation method for different topographic condition and hydrologic year type under the current economic and technical level.