Exposure of farm hose to the sun can cause problems, depending on the material and quality of the hose. Here are some possible scenarios:

1. Aging and deterioration: Prolonged sun exposure will cause the hose material to age and deteriorate. Especially with plastic hoses, UV radiation can make the plastic brittle, increasing the risk of cracks and leaks.

2. Deformation and discoloration: Exposure to high temperatures may cause the hose to deform and lose its original shape. Additionally, some hoses may become discolored due to UV rays, but this usually does not affect their functionality.

3. Water leaks: Aged or damaged hose is more likely to develop cracks or holes, which can lead to water leaks. This can waste water and reduce irrigation efficiency.

4. Reduced durability: Sun exposure will shorten the service life of the hose, so the hose needs to be replaced more frequently, increasing maintenance costs.

In order to extend the life of agricultural water belts, the following measures are recommended:

- Sunshade: If possible, use shade netting, tree shade, or other means to reduce the amount of time the sun is directly on the water strip.

- Regular Inspections: Check the hose regularly for signs of potential damage or aging and replace damaged parts promptly.

- Use high-quality hoses: Choosing durable, UV-stabilized hose materials can reduce the impact of UV rays on the hoses.

In short, exposure of agricultural hoses to the sun may cause some problems, but with proper maintenance and protection measures, these problems can be reduced and the service life of the hoses can be extended.