CHAPTER 1 Introduction ◎1.1 The Implications ofWater—saving Irrigation ◎1.2 Importance ofDeveloping Water.saving Irrigation ◎l.3 Overview and Prospects of Water—saving Irrigation Engineering Technology 1.3.1 Present situation in China 1.3.2 Present situation in foreign countries 1.3.3 Developmental trend of water..saving irrigation technology CHAPTER 2 Basic Theory of Water—saving Irrigation ◎2.1 Crop Water Demand 2.1.1 The method of direct water demand calculation 2.1.2 A method of calculating actual crop water demand by calculatirrg referenced crop water demand ◎2.2 Crop Water Production Function ◎2.3 Irrigation Water Use Efficiency ◎2.4 Crop Irrigation System ◎2.5 Soil Water Model CHAPTER 3 Sprinkler Irrigation Technology ◎3.1 Classification of Sprinkler Irrigation System ◎3.2 Components of Sprinkler Irrigation System 3.2.1 Sprinkler 3.2.2 Pump 3.2.3 Pipeline 3.2.4 Accessory equipment ◎3.3 Technical Parameters of Sprinkler Irrigation 3.3.1 Application rate of sprinkler irrigation 3.3.2 Water distribution characteristics 3.3.3 Uniformity of sprinkler irrigation 3.3.4 Droplet intensity CHAPTER 4 Micro—irrigation Technology ◎4.1 Micro—irrigation System 4.1.1 Composition of micro--irrigation system 4.1.2 Types of micro-irrigation systems 4.1.3 Composition of a drip irrigation system 4.1.4 Function of the various components 4.1.5 Equipment for drip irrigation system ◎4.2 Micro Sprinkler Irrigation 4.2.1 Types of sprinkler systems 4.2.2 Design of sprinkler system ◎4.3 Micro—irrigation Technical Parameters 4.3.1 Factors considered in irrigation designing 4.3.2 Design of water consumption 4.3.3 Percentage of wetted soil area 4.3.4 Uniformity of irrigation water application 4.3.5 Irrigation water efficiency 4.3.6 Working pressure of dripper design CHAPTER 5 Low.pressure Pipe Irrigation Technology ◎5.l Types and Composition of Low.pressure Pipeline Water Conveyance Irrigation System 5.l.1 Types of low—pressure pipeline water convevance irrigation system 5.1.2 Composition of 10w.pressure Dipeline water conveyance irrigation system ◎5.2 Basic Requirements for Planning and LayOut 0f Water Distribution Pipeline Network ◎5.3 Advantages of Low—pressure Pipeline Water Conveyance Irrigation Engineering Technology 5.3.1 Water and energy saving 5.3.2 Save land and reduce labor 5.3.3 Expand the irrigation area 5.3.4 Prompt irrigation to increaseplloduction andincome 5.3.5 Strong adaptability and easy to manage ◎5.4 Layout of Pipe Network System 5.4.1 Ring pipe network 5.4.2 Dendritic pipe network 5.4.3 Mixed pipe network ◎5.5 Hydraulic Calculation of Low.pressureline 5.5.1 Design flow of irrigation svstem 5.5.2 Design ofwater head 5.5.3 The primary selection of pipe diameter and the hydraulic calculation of the pipe CHAPTER 6 Surface Irrigation Technology ◎6.1 Introducfion of Surface Irrigation 6.1.1 Design principle of basin irrigation 6.1.2 Design principle of border irrigation 6.1.3 Design principle of~rrow irrigation 6.1.4 Water supply and management ◎6.2 Structural Elements 6.2.1 Diversion structures 6.2.2 Conveyance and management structures 6.2.3 Field distribution systems CHAPTER 7 Channel Irrigation Technonlogy ◎7.1 Channel Irrigation System 7.1.1 Irrigation canal head works 7.1.2 Water conveyance and distribution system 7.1.3 Field irrigation system 7.1.4 Drainage channels 7.1.5 Venting area ◎7.2 Channel Seepage Prevention Technology 7.2.1 The significance and role of channel seepag-prevention 7.2.2 Type of channel seepage prevention 7.2.3 The section form of channel seepage preve
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