Water-saving effect evaluation of agricultural synthetic technology in well-irrigation fields-A case study from Sanhe agricultural demonstrating fields, Hebei Province

Using the fuzzy evaluation method to Sanhe agricultural experiment fields, Hebei Province, the water-saving benefit was evaluated from three ways including direct water-saving effect, direct water-saving economic benefit and social influence. The results indicate that the pattern of pea+spring corn has the highest score,then the pattern of spring corn and spring corn+winter wheat+summer corn, the synthetic pattern Ⅲ and Ⅳ have obvious water-saving benefit. Appropriate adjustment of the agriculture structure can make obvious water-saving effect and economic effect. The results also show that the synthetic pattern(deficit irrigation into little fields+straw mulching+no-tillage)has better economic and water-saving benefit than the single patterns.