How big is the impact on local vegetable farmers when the frost strikes in Zhangjiakou, Hebei Province and the temperature approaches ℃?
The temperature in Zhangjiakou, Hebei Province is approaching ℃. Because of the influence of abnormal weather this year, netizens are actually quite excited when they 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 big is the impact of frost on vegetable farmers?
people who don't know much about frost will think that it is the same as snowflakes in winter, which means that the weather is getting colder. In fact, it is almost the same, but for vegetable farmers, this situation is very bad. Because frost refers to the low temperature hazard phenomenon that occurs mostly in the spring and autumn transition season, the temperature is higher than ℃ during the day and drops below ℃ in a short time at night. When the plant temperature drops below ℃, the cells in the plant will dehydrate and freeze, and suffer from frost damage. For example, farmers in Guyuan County, Zhangjiakou City rushed to the field, and the scene in front of them stunned him. The ground planted with zucchini is covered with a layer of frost, all the leaves are drooping, and the immature zucchini has been frozen to death, so you can know what a great loss it is to crops.
how do growers prevent frost?
1. use plastic film. For growers, they are most afraid of encountering sudden cold weather or cold 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 such a situation, it is only necessary to use plastic film to prevent frost from causing unnecessary damage to crops.
2. Use spray or irrigation to prevent frost. This method is to use the principles of physics to achieve the purpose of preventing frost. Because the temperature of water is higher than the temperature of soil, spraying water on the top of crops will form water droplets, and the water will absorb heat, thus achieving the purpose of heat preservation. But in this way, we must know the weather in advance, and we must complete this series of actions the day before the frost.