The irrigation main water belt, also known as the mainline or main pipe, plays a crucial role in the irrigation system. It serves as the primary conduit for water distribution from the water source to various sections of the irrigation system. The main water belt is typically a larger diameter pipe that can handle high water flow rates and pressure.

Its main functions include:

1. Water supply: The main water belt transports water from the water source, such as a well, reservoir, or water pump, to the irrigation system. It ensures a steady and reliable water supply to the entire system.

2. Pressure regulation: The mainline helps maintain consistent water pressure throughout the irrigation system. By minimizing pressure fluctuations, it ensures uniform water distribution and prevents damage to the irrigation equipment.

3. Water distribution: Branch lines or lateral pipes are connected to the main water belt to distribute water to specific areas or zones within the irrigation system. These smaller pipes are responsible for delivering water to individual sprinklers, drip emitters, or other irrigation devices.

4. Flexibility and adaptability: The main water belt is often designed to be flexible and easily adjustable. This allows for convenient installation, maintenance, and modifications to the irrigation system layout, accommodating changes in crop patterns or field configurations.

Overall, the irrigation main water belt serves as the backbone of the irrigation system, facilitating the efficient and effective delivery of water to the desired areas, promoting healthy plant growth, and maximizing water conservation.