The frost hit Zhangjiakou, Hebei Province, and the temperature approached 0℃. How much impact did it have on local vegetable farmers?

There is frost in Zhangjiakou, Hebei Province, and the temperature approaches 0℃. Because of the abnormal weather this year, netizens are actually quite excited to see such news, thinking that the weather has finally cooled down. But this situation is really good for ordinary people, but it is extremely harmful to growers.

How much does frost affect vegetable farmers?

People who don't know much about frost will think that it is the same as snowflakes in winter, indicating that the weather is getting cold. In fact, it is similar, but for vegetable farmers, this situation is very bad. Because frost refers to the low temperature hazard phenomenon that occurs mostly in the transition season of spring and autumn, the temperature is higher than 0℃ during the day and drops below 0℃ in a short time at night. When the plant temperature drops below 0℃, the cells in the plant will dehydrate and freeze, and suffer from freezing injury. For example, farmers in Guyuan County, Zhangjiakou City rushed to the field, and the sight in front of them stunned him. The ground planted with zucchini was frosted, the leaves drooped, and the immature zucchini froze to death. You can imagine what a great loss this is to crops.

How do growers prevent frost?

1, with plastic film. For growers, they are most afraid of encountering sudden cold weather or winter. Because this season is prone to frost, frost will cause very serious damage to crops, which will greatly reduce the harvest of crops and reduce the economic benefits of farmers. In fact, in this case, only plastic film is needed to prevent frost from causing unnecessary damage to crops.

2. Use spray or irrigation to prevent frost. This method uses the principles of physics to achieve the purpose of frost prevention. Because the temperature of water is higher than that of soil, spraying water on the top of crops will form water droplets, and water will absorb heat, thus achieving the purpose of heat preservation. But in this way, we must know the weather in advance and finish this series of actions the day before first frost.