(1) Smoke-curing method: In a frosty night, smoking in the field can effectively reduce frost damage. However, there are two things to note: First, the smoke and fire points should be dense enough to allow the smoke screen to cover the entire park. Second, the lighting time should be appropriate. It should be ignited in the upper wind direction from midnight to 2:00 AM until sunrise. There is a smoke screen covering the ground. This works best.
(2) Water spray method: Before the frost occurs, spraying the water on the surface of the plant with a sprayer can slow down the body temperature and increase the content of water vapor in the atmosphere. The water vapor condenses and releases heat to mitigate frost damage. The obvious frosty days can be sprayed with water several times.
(3) Wetland Law: Wet soils have large heat capacity, large thermal conductivity, and slow surface cooling. Therefore, before the occurrence of frost, wetting the ground of the tea garden can reduce the frost intensity. This method is generally adopted simultaneously with the water spray method.
(4) Coverage method: Cover the tea pot with a straw and a film. This method applies a smaller area. Due to the high cost, it is necessary to adopt white tea and the first batch of high-grade tea to be picked.
(5) Washing method: In the event of frost, watering or spraying with water before the sun comes out can reduce the risk of frost damage to crops.
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