Study Of Water Efficiency Potentiality And Modes On Water Saving Irrigation Of Agricultural Comprehensive Development In Anhui Province

Anhui is a province with severe water shortage whose water resource in temporal and spatial distribution is not uniform.As one of the primary grain supply bases, conventional irrigation method is adopted up to the present in Anhui province. This brings on low utilization ratio of agriculture watering and very serious waste of irrigation watering.Statistically, the utilization ratio of irrigation watering today is only 0.40-0.45, moisture productivity is less than 1.0kg/m3;but the utilization ratio of irrigation watering in developed country is 0.75-0.90, moisture productivity is more than 1.7kg/m3.With its economic and social developments, its industrial and domestic consumptions of water and the consumption of water for ecological construction will greatly increase due to its increasing population and accelerating urbanization and thus its severe water, and then the situation of water shortage will become much more severe. Water saving is one of the key measurements on solving the water shortage in Anhui Province. Agriculture requires a lot of water resource, so agriculture plays a very significant role in water saving field. Developing and electing the mode of water saving agriculture irrigation reasonably, is useful for the development of water saving irrigation, important for continuable utilization of water resource in Anhui Province, improvement of agriculture production and ensuring national grain safety, and then it will accelerate economic and social continuable development and comprehensive construction of comfortably-off society.According to features of water and soil resources, features of topography and applicable situations of various water saving measures in Anhui Province, according to the analysis of the potencial of Anhui Province's water saving,this paper adopts synthetic analysis method combining qualitative and quantitative analysis, and puts forward five modes of water saving irrigation. Furthermore, it investigates the intension, applicability and contents of various modes of water saving irrigation.