Landbrug og biologi
irrigation and drainage
100%
Vietnam
68%
case studies
55%
irrigation
51%
pumps
35%
canals (waterways)
24%
electric power
23%
gasoline
20%
gravity
20%
farmers
19%
water
15%
surface water
10%
application methods
9%
irrigation management
9%
households
8%
farms
6%
crops
4%
Teknik og materialevidenskab
Catchments
98%
Irrigation
78%
Drainage
70%
Rivers
64%
Pumps
22%
Canals
17%
Gravitation
12%
Surface waters
9%
Crops
8%
Farms
7%
Compensation and Redress
5%
Costs
2%
Geo- og miljøvidenskab
river basin
50%
irrigation
50%
drainage
48%
pump
25%
petrol
18%
canal
13%
electric power supply
12%
gravity
10%
water
8%
performance assessment
8%
pumping
6%
farm
6%
household
6%
Asia
5%
crop
5%
surface water
4%
policy
4%
cost
3%
trend
3%
energy
3%
method
1%
Kemiske forbindelser
Irrigation
97%
Red
45%
Pump
28%
Gravity
16%
Flexibility
11%
Electric Energy
10%
Surface Water
7%
Application
6%
Volume
4%