When is the first frost? When is the first frost on 20 16?

No matter how beautiful things will change with the passage of time, the same crisp autumn season will bid farewell to us with the arrival of the first first frost solar term among the 24 solar terms, which indicates that the cold winter is coming soon. Let's see when the first frost will arrive on 20 16.

The first frost time is 2016: 201617: 45: 301October 23rd, 2065438+23.

The First English Version of Frost: Descendants of Frost

The first frost, the weather is getting colder and colder, frost. At the first frost, the longitude of the sun is 2 10. It's already cold, and there is frost, so it's called the first frost.

"Twenty-four solar terms" said about the first frost: "In mid-September, the gas is cold and condensed, and the dew is frost." At this time, there has been frost in the Yellow River Basin of China, and a silver ice crystal is shining in the fields thousands of miles away, and the leaves are yellow and withered. The ancient book "Twenty-four solar terms" said: "Qi stagnates at the beginning of frost, and Yin begins to coagulate". It can be seen that the "first frost" means that the weather is getting colder and the dew condenses into frost.

In ancient China, the first frost was divided into three stages: first, the jackal sacrificed animals; Second, the vegetation is yellow; Three stings are salty. The jackal began to catch prey, sacrifice animals, and return books to heaven with animals, paving the way for sacrificing autumn gold; The leaves on the earth turned yellow and fell; The stinging insects are motionless in the cave and hang their heads into hibernation.

The first frost is the last solar term in autumn, which is the transition from autumn to winter. There is a lot of heat dissipation on the ground in autumn, and the temperature suddenly drops below 0 degrees. Water vapor in the air directly condenses on the ground or plants to form fine ice needles, and some become hexagonal frost flowers, which are white and loose in structure. Frost can only form on sunny days. People say that "thick frost is bad for the sun" is the truth.

The solar term of the first frost means that the weather is getting colder and first frost begins. The average temperature in most parts of Northeast China, East Inner Mongolia and Northwest China has been below zero, the soil freezes, and the winter crops stop growing and enter the wintering period.

"The first frost kills a hundred herbs", plants that have been hit by severe frost have no vitality at all. This is because the liquid in plants forms ice crystals due to frost, protein precipitates, and the water in cells extravasates, which makes the protoplasm seriously dehydrated and deteriorated. "The wind knife and frost force the sword", which shows the ruthlessness and cruelty of frost.

In fact, frost and frost are inseparable, but it is "freezing" that harms crops, not "frost". Someone once tried to put two leaves of a plant in a box with the same low temperature, one of which was frosted and the other was not frosted. Results The leaves were seriously damaged in frost-free period, but there were only slight frost marks in frost period. This shows that frost can not only harm crops, on the contrary, when water vapor condenses, it can also release a lot of heat. 1 g steam condenses into water, and the heat of vaporization released is 667 calories, which will turn heavy frost into light frost and light frost into dew to avoid frostbite.

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