The service life of a farm hose depends on several factors, including the quality of the hose, its materials, how it is used and maintained, and more. Generally speaking, good quality agricultural water belts can have a long service life with proper management and maintenance, usually more than 5 years or even longer. Here are some key factors that affect the service life of agricultural hoses:

1. Material quality: Hose made from high-quality materials are usually more durable. Typically, hoses made of plastic materials such as polyethylene (PE) or polyvinyl chloride (PVC) have a longer lifespan.

2. Sun exposure: Prolonged sun exposure may cause the hose to age and crack. Avoid exposing hoses to UV rays for extended periods of time, or use hoses with a UV-resistant layer to extend their life.

3. Pressure and Temperature: Incorrect water pressure and temperature can cause the hose to deform, crack, or deteriorate. Make sure to use the proper water pressure and temperature within the hose's tolerance.

4. Maintenance and care: Regular inspection, cleaning and maintenance of the hose can extend its life. Check for wear, cracks or leaks and fix the problem promptly.

5. Frequency of use: A hose that is used frequently may wear out faster. Storing hose when not in use reduces exposure time.

6. Soil conditions: Different types of soil have different effects on water zones. Sharp rocks or hard soil can scratch or penetrate the hose.

7. Chemicals: Some agricultural chemicals and fertilizers can cause damage to hose lines, so use and store these chemicals with care.

In short, the service life of agricultural water belts is a complex issue affected by many factors. To extend the life of hoses, farmers and ranchers should regularly inspect, maintain and store hoses and select high-quality hoses suitable for specific uses. Additionally, following the manufacturer's recommendations for use and maintenance is key.