Will the first frost frost?

Will the first frost frost? Cold dew begins at 10, and the first frost ends at 10. When the first frost comes, the temperature is relatively low, so you can put on a thick cotton-padded jacket. I sorted out relevant information about it in The First Frost. Let's have a look.

First frost 1 Whether it will frost Literally, the first frost is frosting. We may associate it with frosting, thinking that it will frost as soon as the solar term arrives, but it is not. These are two different concepts. The ancient book "Twenty-four solar terms" describes the first frost as follows: "In mid-September, the air is cold and condensed, and the dew becomes frost", which means that in September of the lunar calendar, the weather gradually gets cold, and the water vapor in the air will condense due to the cold, and the dew becomes frost. It can be seen that the first frost only responds to the temperature drop and the cold weather after the first frost, and it is not certain whether frost can occur. "Frost" is a white crystal formed by condensation of water vapor on the ground with cold air due to temperature difference change. First frost didn't fall from the sky, and the first frost and first frost are two different things. This is also reflected in some agricultural proverbs.

There is no frost in early September, and there is frost in early October. The Gregorian calendar time of the first frost is fixed every year, but the lunar calendar time is different. Sometimes it's September in the lunar calendar, and sometimes it's 10. In September of the lunar calendar, the weather may be warmer. Even if the first frost of the solar term comes, it is not so cold that the water vapor on the ground condenses into frost, that is, there is no frost. On the other hand, October is different. In October of the lunar calendar, the weather will be very cold in late autumn, and the temperature will drop enough to make the dew condense into frost, with frost on the ground and frost on the ground. In fact, frost does not necessarily appear in autumn, but also in spring and winter.

At the beginning of this year, the solar calendar is still the same, and the lunar calendar is the seventh day of September, but this year there is a leap in April, and the first frost lunar calendar is delayed by one month. If it is not a leap April, the first frost will appear in this year's 10 lunar month. Therefore, even after the first frost and the first frost in September this year, the weather is still very cold. In fact, we have already felt it in our lives. Before we reach the first frost, the temperature is usually very low. It snowed in previous years 10.

Around the first frost, it is the busy season for our farmers, and there is a lot of farm work to do. Especially this year, it has long been cold. Under the influence of La Nina, there will be unstable extreme weather, so everything should be prepared in advance. Late wheat can't pass the first frost. For us, it is best to plant winter wheat before the first frost, and it is too late to plant it after the first frost. Then, we should finish harvesting sweet potatoes and green onions in time, and strengthen the management of Chinese cabbage still growing in the field. These are all things we have to do before and after the first frost. What farm work does Chushuang have? Welcome to add.

Will the first frost frost? The first frost is actually a condensation phenomenon. The "frost" in the first frost usually appears in the morning because of the large temperature difference between day and night. When the water vapor on the surface meets the temperature below 0 degrees Celsius, it will directly turn into white crystal frost.

What is the state change in The First Frost?

The arrival of the first frost solar term also means the formation of the first frost. At this time, the temperature difference between day and night is large, which leads to the formation of frost. Scientifically speaking, frost is made up of ice crystals. It is a sublimation phenomenon, which can not be formed at any time and needs certain climatic conditions.

Did the first frost begin to frost?

Whether the first frost begins to frost mainly depends on the location. After all, the climate in different parts of our country is different.

The first frost is the last solar term in autumn. According to the data of previous years, after the first frost, the weather became cold and the temperature difference between day and night changed greatly. Most plants gradually stopped growing and began to wither. This solar term is a key one of the 24 solar terms. Basically, most parts of China will enter the late autumn season, and dew will start to condense into frost. For people, people should pay attention to cold and warmth in cold weather to prevent colds, especially middle-aged and elderly people with weak constitution, and add clothes in time.

Will the first frost frost? 3 1. The first frost does not mean "frost", but it means that the weather is getting colder and colder, and frost will appear as long as it is cold. The arrival of the first frost solar terms just means that it has entered the late autumn. With the frequent cold air, this is a phenomenon that the earth will be frozen or will produce the first frost. It is worth mentioning that there is no concept of "first frost" in meteorology. Meteorology calls the first frost in autumn "first frost" or "first frost" and the last frost in spring "late frost" or "final frost". The interval from the last frost to the first frost is a frost-free period. Because there is frost when it is frozen, "autumn frost" and "spring frost" are collectively called frost.

In addition, some people think that the first frost fell from the sky, but it is not. Instead, it comes from the ground. Frost, like dew, is formed by condensation of water vapor on the ground in cold weather. When the temperature is not too low, it condenses into dew. If the temperature is lower, it will condense into frost.

3. Because frost is formed by the condensation of water vapor in the air near the ground and objects on or near the ground, it will also flow with the air, and the coldest and heaviest air will flow to the lowest place, so low-lying places are more prone to frost than high-lying places, which is also the reason why some plants in low-lying places are particularly prone to frost. The ancients also found that frost was related to the weather. The agricultural proverb "Once it was sunny in first frost, it was sunny for a long time in first frost" means that there was frost in the morning and the weather was sunny for a short time; And if there is frost in three mornings, the sunny days will last longer. This makes sense and is still accurate today.