flood

Flood irrigation requires digging ditches. In the past, labor was used, then livestock and tractors were used, and then the most advanced machinery using laser ranging was used. It depends on economic and geographical conditions, such as the size of the area that needs to be irrigated, what technologies are available, and labor costs. Wait. Plants grow in rows or seedbeds in furrows and ditch, and water enters the farmland along the channel and flows along the edge of the ditch or seedbed. It is also possible to use hard plastic pipes or aluminum pipes to divert water in the fields, open holes at intervals on the pipes for irrigation, and use siphon pipes to connect the channels.

The application of pipes can control the flow of water. Due to differences in temperature, wind speed, soil, and infiltration capacity, flood irrigation is likely to cause excess water in some places and insufficient water in some places. The pipes can be moved, so this uneven phenomenon can be controlled. . Especially if automatic valves are used to increase efficiency.

Metal Rocker Sprinkler 8065 with required working water pressure of 2.0-6.0 bar

However, because flood irrigation wastes water resources, requires more labor, and easily raises the groundwater level, soil salinization has been gradually eliminated in developed countries. However, it is still widely used in most developing countries because it requires only a small amount of capital and technology.

sprinkler

Sprinkler irrigation is to send water to the sprinkler head located in the field by the pipeline. There is a difference between high pressure and low pressure, and it can also be divided into fixed type and mobile type. Fixed sprinklers are installed in fixed places, and some sprinklers are installed at the height of the ground surface. They are mainly used in places that require aesthetics, such as golf courses, racecourses, lawn irrigation, parks, cemeteries, etc.

The pressure of the sprinkler head generally cannot exceed 200 bar. If it is too high, water mist will be generated, which will affect the irrigation efficiency. The sprinkler head can be rotated, and the rotation can be 360 ​​degrees or a certain angle. There are also spray guns. It can work at a pressure of 275-900 bar, spray farther, and reach a flow rate of 3-76 liters/second. The spray gun can also be used for industrial dust protection.

If the sprinkler head and the water source are connected with a pipe, so that the sprinkler head can be moved, for mobile sprinkler irrigation, the plastic pipe is rolled onto a reel, which can be released with the movement of the sprinkler head, or the sprinkler head can be moved manually.

The disadvantage of sprinkler irrigation is that a lot of water will be lost due to evaporation, especially in windy weather, and it is not easy to irrigate the entire irrigation area evenly. Hot, sunny weather can cause leaf burns.