The meaning and proverb of the first frost

The first frost is the last solar term in autumn, which is the transition from autumn to winter.

Proverbs about the first frost:

One, hit a catty of frost, food has no place to live.

Winter wheat is a crop that needs more water. Insufficient water supply in different periods will lead to effective panicle formation, flowering, pollination and fertilization in wheat tillering, jointing and flower bud differentiation, increase the number of grains per panicle, which will have a fatal impact and eventually lead to a decline in yield.

Second, there is no rain in the cold dew, and there is no frost for a hundred days.

Rain in nature can be divided into four forms: frontal rain, convective rain, topographic precipitation and typhoon rain, but no matter which form of rain, it must be controlled and assisted by cold air. There are two essential conditions for frosting, one is the temperature below freezing point, and the other is the air humidity above 100%.

Third, there is no dew on windy nights and no frost on cloudy nights.

Dew is water droplets formed by condensation of water vapor in the air on ground objects with low surface temperature on sunny nights. Dew condensation on ground objects requires two preconditions at the same time. One is that the relative humidity of air must be above 100%, and the other is that there should be an appropriate temperature difference between day and night.

Fourth, the autumn rain penetrated the ground, and first frost arrived late.

As we said before, frost is the supersaturated water vapor in the air, which condenses at the low temperature from evening to early morning. Frost has two necessary prerequisites. At night, there should be a low temperature below freezing point as a guarantee, and there should be enough water vapor. It has also been said that low temperature, sunny days and breezes are easy to form dew and frost.

5. If you don't cut the first frost, you will lose one reed a day.

The word "grain" in this proverb refers to rice. The first frost solar term is the mature season of single-season hybrid rice and double-season late rice in South China. Rice goes through four stages from heading to development and maturity: milk ripening, wax ripening, complete ripening (also called yellow ripening) and dry ripening.

Precautions for first frost:

1, no exposure.

Old people often say: "Cold starts from the feet". The first frost, the weather is getting colder, and the feet are the farthest. Therefore, once the feet catch cold, the cold will easily invade the body and catch a cold, which will affect your health.

2, white radish.

There is a folk saying that "October radish participates in ginseng". White radish contains nutrients that our body needs. Regular eating can stimulate appetite, relieve cough, eliminate phlegm, dispel dryness and promote fluid production, which is helpful for health preservation in autumn and winter.

3. Warm water.

In the first frost season, the temperature begins to get lower, so drinking warm boiled water helps to keep warm and drive away the cold. Especially drinking a cup of warm water in the morning can speed up metabolism, replenish the water lost the night before, clean the discharged stomach and prevent constipation. The water temperature should be around 40-45 degrees.

4. Hot tea.

Be sure to drink warm tea, not herbal tea. Drinking more tea and water in the first frost can not only relieve the dryness of the mouth and tongue, but also help the human body to reduce fire, warm up and drive away cold, and relieve fatigue, with many benefits.

5. Soak your feet before going to bed.

In the first frost season, it is best to get into the habit of soaking feet with hot water before going to bed, which will help promote blood circulation, dispel the cold and relieve or eliminate the fatigue of the day. It is best to keep the temperature of hot water at about 40 degrees, and the water should not pass through the ankle. It is best not to soak your feet for more than half an hour at a time until your body sweats slightly.