《灌溉排水工程学》课程教学课件（讲稿）Micro Irrigation

Chapter 8 Micro Irrigation Dr.Guangyong Li CAU,E-mail:LGYL@cau.edu.cn

1 Chapter 8 Micro Irrigation Chapter 8 Micro Irrigation Dr. Guangyong Li CAU, E-mail:LGYL@cau.edu.cn

CONTENTS ·INTRODUCTION MICRO IRRIGATION SYSTEM AND EQUIPMENT 1.1 Definition,Types 1.2 Advantages and Problems 1.3 System Components ·1.4 Emitters 1,5 Clogging and filtration 1.6 Fertilizer Applicator 1.7 Others (air valve,pressure regulator,pipe 。1.8 Typical Micro Irrigation System in the field

2 CONTENTS • INTRODUCTION • MICRO IRRIGATION SYSTEM AND EQUIPMENT • 1.1 Definition, Types • 1.2 Advantages and Problems • 1.3 System Components • 1.4 Emitters • 1,5 Clogging and filtration • 1.6 Fertilizer Applicator • 1.7 Others (air valve, pressure regulator, pipe • 1.8 Typical Micro Irrigation System in the field

CONTENTS 。 MICRO IRRIGATION SYSTEM DESIGN 2.1 Layout of Drip Line and Emitter 2.2 Micro Irrigation System Design Parameters 2.3 Water Balance 2.4 Layout of Pipe Network 2.5 Irrigation Schedule 2.6 Hydraulic Calculation of Pipe Network 2.7 Example for Design of Irrigation System MICRO IRRIGATION AUTOMATION AND EQUIPMENT 3

3 CONTENTS • MICRO IRRIGATION SYSTEM DESIGN 2.1 Layout of Drip Line and Emitter 2.2 Micro Irrigation System Design Parameters 2.3 Water Balance 2.4 Layout of Pipe Network 2.5 Irrigation Schedule 2.6 Hydraulic Calculation of Pipe Network 2.7 Example for Design of Irrigation System • MICRO IRRIGATION AUTOMATION AND EQUIPMENT

Introduction 。1960'S-invention 1970'S-went to commercial application

4 Introduction • 1960’S -invention • 1970’S—went to commercial application

World Microirrigated Regions Microirrigated Area-ha 0-25000 25001-104000 104001-267000 267001-562854 562855-1050000

5

SPRINKLER AND MICROIRRIGATED AREAS IN SOME PARTICIPATING MEMBERS OF ICID* (In order of decreasing percentage) Country Total irrigated Sprinkler Microirrigation Total sprinkler of total area(Mha) ha ha microirrigation,ha irrigated area Austria 0.0800 760.000 3,000 763.000 100.0 Germany 0.5320 530,000 2,000 532,000 100.0 Israel 0.2310 70,000 161,000 231,000 100.0 Lithuania 0.0081 8,122 8,122 100.0 Czech Republic 0.1530 151,011 1,224 152,235 99.5 Great Britain 0.1600 156,000 2,000 158,000 99.0 Slovak Republic 0.3100 310.000 2,650 312,650 99.0 France 1.6100 1.450.000 90.0 Malawi 0.0550 43,193 5,450 48.643 87.0 Hungary 0.1300 85,000 4,200 89,200 68.6 Zimbabwe 0.1500 87,000 8,000 95.000 63.0

6 SPRINKLER AND MICROIRRIGATED AREAS IN SOME PARTICIPATING MEMBERS OF ICID* (In order of decreasing percentage) Country Total irrigated Sprinkler Microirrigation Total sprinkler % of t otal area (Mha) ha ha & microirrigation, ha irrigated are a Austria 0.0800 760,000 3,000 763,000 100.0 Germany 0.5320 530,000 2,000 532,000 100.0 Israel 0.2310 70,000 161,000 231,000 100.0 Lithuania 0.0081 8,122 - 8,122 100.0 Czech Republic 0.1530 151,011 1,224 152,235 99.5 Great Britain 0.1600 156,000 2,000 158,000 99.0 Slovak Republic 0.3100 310,000 2,650 312,650 99.0 France 1.6100 - - 1,450,000 90.0 Malawi 0.0550 43,193 5,450 48,643 87.0 Hungary 0.1300 85,000 4,200 89,200 68.6 Zimbabwe 0.1500 87,000 8,000 95,000 63.0

Microirrigati Country Total irrigated Sprinkler on Total sprinkler of total microirrigation. irrigated area(Mha) ha ha ha area Jordan 0.0700 5,300 38,300 43,600 62.0 Macedonia 0.1730 100,000 500 100.500 58.0 Cyprus 0.0550 2,000 25,000 27,000 49.0 Spain 3.3400 800,945 562,854 1,363,799 40.8 South Africa 1.3000 255.000 220,000 475,000 36.5 USA 21.4000 3380,000 1,050,000 4,430.000 21.0 Egypt 3.3000 450,000 104,000 554,000 17.0 Italy 2.7000 345.000 80.000 425,000 16.0 Syria 1.2800 93,000 62,000 155,000 12.0 Mexico 6.2000 600,000 10.0 Portugal 0.6300 40.000 25,000 65,000 10.0 Taiwan(Rep.of China) 0.4560 8,500 18,100 26,600 5.8 Australia 2.0000 100.000 5.0 Iran 8.0500 199,075 53,717 252,792 3.1 China 53.3000 1,200,000 267,000 1,467,000 2.8 India 57.0000 658,500 260,000 918,500 1.6 Tolel for these countes 1646731 9,737.546 2955995 14,8436417 Latest data as supplied by the respective National Committees/Committee

7 irrigated area & microirrigation, area (Mha) ha ha ha Total sprinkler % of total Microirrigati Country Total irrigated Sprinkler on Jordan 0.0700 5,300 38,300 43,600 62.0 Macedonia 0.1730 100,000 500 100,500 58.0 Cyprus 0.0550 2,000 25,000 27,000 49.0 Spain 3.3400 800,945 562,854 1,363,799 40.8 South Africa 1.3000 255,000 220,000 475,000 36.5 USA 21.4000 3,380,000 1,050,000 4,430,000 21.0 Egypt 3.3000 450,000 104,000 554,000 17.0 Italy 2.7000 345,000 80,000 425,000 16.0 Syria 1.2800 93,000 62,000 155,000 12.0 Mexico 6.2000 - - 600,000 10.0 Portugal 0.6300 40,000 25,000 65,000 10.0 Taiwan (Rep. of China) 0.4560 8,500 18,100 26,600 5.8 Australia 2.0000 - - 100,000 5.0 Iran 8.0500 199,075 53,717 252,792 3.1 China 53.3000 1,200,000 267,000 1,467,000 2.8 India 57.0000 658,500 260,000 918,500 1.6 Total for these countries 164.6731 9,737,646 2,955,995 14,843,641 *Latest data as supplied by the respective National Committees/Committee

Micro irrigation area in the world (ha) ha (2000) 1,200,000 1,000,000 800,000 600,000 400,000 200,000 0 d B2105y 三 d d d n qum 8D14A2 n 巴 13371104 000010 8 d

8 0 200,000 400,000 600,000 800,000 1,000,000 1,200,000 America Spain China India Australia S. Africa Israel France Mexico Egypt Japan Italy Thailand Columbia Jordan Brazil Cyprus Portugal Taiwan of Morocco others Micro irrigation area in the world (ha) ha (2000)

the Percentage of Micro Irrigation Area in Proportion to Irrigation Area in the World 1.5% irrigation area in the world 247,620,000ha Micro irrigation area in the world 3,767,154ha 9

9 the Percentage of Micro Irrigation Area in Proportion to Irrigation Area in the World 1.5% irrigation area in the world 247,620,000 ha Micro irrigation area in the world 3,767,154 ha

Development Speed of Micro Irrigation Area in the World 633% 700% 600% 500% 400% 300% 136% 200% 77% 76% 100% 0% 1981-1986 1986-1991 1991-2000 1981-2000 10

10 136% 77% 76% 633% 0% 100% 200% 300% 400% 500% 600% 700% 1981－1986 1986－1991 1991－2000 1981－2000 Development Speed of Micro Irrigation Area in the World