What is the solar term before Frost Descent? What does “Frost Descent kills all the grass” mean?
Introduction: It’s the Frost Descent again, so what is the solar term before the Frost Descent? What does “Frost Descent kills all the grass” mean? The ninth month of the lunar calendar is the ninth month of the year. It is a time of clear and cool autumn weather and blooming chrysanthemums. September is the golden month of harvest. Come to Mr. Shui Mo's website to learn more about September of the lunar calendar in 2020!What is the solar term before Frost Descent?Autumn solar terms <br /> Liqiu: The Big Dipper points to the southwest; the sun's ecliptic longitude is 135°. The festival falls on August 7th to 9th of the Gregorian calendar. The Beginning of Autumn is the beginning of the Shen month in the Ganzhi calendar.End of Heat: The Big Dipper points to Wu; the sun’s ecliptic longitude is 150°. The festival falls on August 22-24 of the Gregorian calendar. Bailu: the Big Dipper points to Gui; the sun’s ecliptic longitude is 165°. The festival falls on September 7th to 9th of the Gregorian calendar. Bailu is the beginning of the You month in the Ganzhi calendar. Autumnal Equinox: the Big Dipper points to Yi; the sun's ecliptic longitude is 180°. The festival falls on September 22-24 of the Gregorian calendar. Cold Dew: Doujia; the sun's ecliptic longitude is 195°. The festival falls on October 8th and 9th of the Gregorian calendar. Cold Dew is the beginning of the Xu month in the Ganzhi calendar. Frost Descent: The Big Dipper points to Xu; the sun’s ecliptic longitude is 210°. The festival falls on October 23-24 of the Gregorian calendar. By looking up the solar terms in autumn, we can know that the solar term before Frost Descent is Cold Dew. Cold Dew is a solar term that reflects the characteristics of climate change. After the Cold Dew solar term, the days gradually become shorter and the nights longer, the sunshine decreases, the heat slowly recedes, the cold gradually arises, the temperature difference between day and night is large, and you can feel a slight chill in the morning and evening. The ancients regarded Cold Dew as a sign of the gradual increase of cold air. From the perspective of climate characteristics, during the Cold Dew season, autumn becomes increasingly intense in the south, with cool weather, little rain and dryness; most areas in the north have entered or are about to enter winter from late autumn. What does “Frost kills all the grass” mean?"Frost kills all the grass." Plants in late autumn gradually lose their vitality. "The wind, the knife and the frost are pressing hard" shows that frost is ruthless and cruel. In fact, although frost and frost are closely related, it is "freeze" rather than "frost" that harms crops.Someone once conducted an experiment: two leaves of a plant were placed in boxes with the same low temperature. One of the leaves was covered with frost, while the other was not. As a result, the frost-free leaf was severely damaged, while the frost-covered leaf only had slight signs of frost damage. This shows that frost not only cannot harm crops, on the contrary, when water vapor condenses, it can also release a large amount of heat. 1 gram of water vapor at 0℃ condenses into water, releasing 667 calories of vaporization heat. It will turn heavy frost into light frost, and light frost into dew, thus avoiding frost damage. Rather than saying "Frost kills all grass", it is better to say "Frost kills all grass". Frost is a sign of cold weather, and freeze is the enemy that kills crops. Since there is frost when there is freezing (sometimes there is no frost, it is called black frost), autumn frost and spring frost are collectively called frost. What are the anti-freeze measures during frost?① Plant early at the right time to avoid late autumn frost;②Select early-maturing and high-yield varieties; ③ Watering, because dry soil dissipates heat faster than wet soil; ④ Smoke can form heat-insulating clouds in a small area to reduce frost damage; ⑤ Hoeing the land, "hoeing with fire" can increase the ground temperature; ⑥ Apply sodium humate or phosphorus fertilizer to make crops mature earlier. Experiments have shown that applying it to yam, corn and millet can make them mature 5-7 days earlier. ⑦The most fundamental thing is afforestation, which can regulate the temperature and completely change the environment. How can one find the destined one in such a vast sea of people? When will the marriage begin? Welcome to click on the "Premium Calculation" below to make predictions in advance. I wish you find your destined person soon! |
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