Frost season information on books

Frost is introduced

frostThe 24 solar termsOne of, the weather gets colder, start with cream.Frost is usually in the Gregorian calendar every year on October 23rd.Then China's Yellow River basin area appeared first frost, much more busy planting crops of the high.

Chinese ancient frost can be divided into three hou, "a jackal Hudson is the beast;Two yellow fall hou vegetation;Three hou sting salted down."The Wolf will capture prey to display in the throttle again after eating;Yellow leaves falling on the earth;Sting bug, all still don't eat in the hole, pendency head to enter a state of hibernation.

After the Gregorian calendar every year on October 23, the sun arrived at longitude 210 degrees of frost.Frost said the weather is colder, condense into frost dew.Departure pulled seventy-two hou the: "in the September, gas against and condensation, frost dew knot".

Calculation method

Frost date calculation formula: [Y * D + C] -l

Formula interpretation: Y = 2 after years, D = 0.2422, L = number of leap year, C = 23.438 in the 21st century, the 20th century C = 24.218.

For example: 2088 frost date = [88 x 0.2422 + 23.438] - [88/4] = 44 - frost 22 = 22, July 22.

Exception: the calculation results and 1, 2089.

Climate change,

Frost throttle contains the weather gets colder, start frosty.Latitude by south of the south, the average temperature around 16 ℃, from the date of first frost and three solar terms.River valley in the south of southern China, to the depths of winter season, can see the frost.Of course, even in the same latitude, due to the different altitude and terrain, there are differences between the formation of air temperature and humidity, the early frost season and frost days also is different.[4] the frost season, cool autumn wind has blown to guangzhou huacheng.Most of northeast in northern, eastern Inner Mongolia and northwest the average temperature is below 0 ℃.

"Frost frost" reflects the climate characteristics of the Yellow River basin.In terms of frost days throughout the year, some places even in summer on the qinghai-tibet plateau have frost and snow, the frost, are more than 200 days, is where the cream day in our country.South qilian mountain, eastern Tibet, qinghai, he ethnoniedicinal, northwest yunnan, tianshan mountain, al tai shan district, the western mountains of northern xinjiang, northeast and eastern Inner Mongolia and other places in frost days are more than 100 days, the south of huaihe river, han river, east of the qinghai-tibet plateau dongpo area are under 50 days, 25 ° north and south of the sichuan basin is only about 10 days, and the coast of guangdong south of fuzhou average annual frost days less than 1 day, and in xishuangbanna, southern hainan and Taiwan and the islands of the south China sea is a place where there is no frost.

First appeared in the fall of the cream is called the first frost, the first frost earlier is harmful to crops.Our country the first frost is from north to south, from the mountains to the plains gradually postponed.Besides have frost areas throughout the year, the first see frost is the greater hinggan mountains of northern, generally at the end of August can be frost;Northeast China, Inner Mongolia and northern xinjiang in September first frost;In early October the frost has appeared in shenyang, chengde, yulin, qamdo to Lhasa a line;In early November in shandong peninsula, zhengzhou, xi 'an to northwest yunnan has visible frost;The eastern part of our country north latitude 30 ° or so, the han river, about 2 ° latitude region of yunnan province to early December to see frost;And xiamen, guangzhou to baise, simao area when frost is after the New Year in early January.

Frost is the ground water vapor condenses into in cold weather, so frost is not frosty, but said the cold weather, the earth will produce the first frost.With the view of science, "the dew knot cream" is not accurate.White dew dew drops freeze and become, is hard small ice particles.And frost is caused by the temperature drops in cold phenomenon in crops, the temperature of growth period of crops, varieties and damage caused by the vary;And frost formation, it must be the ground or features of the temperature fall below 0 ℃, and water vapor in the air content in ground layer to achieve a certain degree.Frost, frost occurs, therefore, does not necessarily occur when frost does not necessarily have frost occurs.However, because see frost when temperature is low, if continue to cooling, it is easy to cause the frost.

With "frost kill grass bouquet", played with the plant, have no life at all.This is because the plant body fluid, because of the frost formed ice crystals, protein precipitation, water leakage inside the cell, make the protoplasm severe dehydration and metamorphism."Inclement weather threatened" yan cream is ruthless, cruel.In fact, the frost and the frost are connected together, but it is harm to the crops "frozen" not "cream".Someone once test: the plant of the two leaf, respectively on the same low temperature box, one of the leaf was covered with frost, another leaf didn't cover with cream, the result of frost-free suffered very heavy leaves, and cover cream leaves only slight frost damage.This illustrates frost not only harm crops, on the contrary, the water vapor sublimation, still can release a lot of heat, 1 gram of 0 ℃ into water, flat plate under forced convection.taking emit heat gasification is 667 calories, it can make heavy frost change light cream, light cream dew, exempt from freezing injury.

Rather than "frost kill grass bouquet", "frost kill grass bouquet.Frost is the performance of the day is cold, frost is the enemy of killing the crops.Because the frozen have cream (sometimes no frost says black cream), so the autumn frost and spring frost generally referred to as the frost.

Frost origin

After the Gregorian calendar every year on October 23, the sun arrived at longitude 210 degrees for frost in the 24 solar terms.Frost is the last of the throttle, autumn is the transition of autumn to winter solar terms.Autumn night ground on a lot of heat dissipation, a sudden drop in temperature below zero, the water vapor in the air on the ground or formation of small ice needle directly on plants, some become the frost of hexagonal, color white and loose structure.

"Escape? Weeks month" : "autumn march gas: the limit of heat, autumnal equinox, frost.""In mandarin? Weeks language" : "see and the wind ring cold fire.""Refers to The Three Kingdoms wu vassar note: after the frost, the wind to the first, so quit cold standby also."Wei wei "Oriental" first chapter 15, "theory of throttle, less than frost, here has several frost."Ancient books "the twenty-four solar terms solution," said: "gas against the frost, Yin coagulation also."Visible "frost" said the weather gradually cool, began to drop the frost.Meteorology, generally called the first appeared in the fall of the frost "early frost" or "first frost", but the last time the spring in the cream called "smear" or "last frost.From the last frost to the first frost interval period, is the frost-free period.

Frost custom

Frost is the last autumn solar terms.In the meantime, many areas in China have the custom of eating persimmon.As the saying goes."Frost eat persimmon, does not have a runny nose.

Shanxi: when the cold dew stresses the autumn ploughing, the autumn harvest autumn ploughing relaxation.Picking cotton digging potatoes HuiCha combining autumn water quickly.Irrigate fields afforestation set feed, yam long distance in seeds.

Hebei: cold dew, frost, soybean harvest.Take a rough, put in storage in a timely manner.Late wheat stubble, assault sowing.Good harvest mountain, feeding cattle.Spinach rape, kind of on a few acres.Can spring of next year, with the early harvest.

Shandong: frost comes, the weather gets colder.To harvest, pachyrhizus peanuts.Sun GuaGan, to take advantage of the sunny day.Sweet potato into the pit, can not relax.The catcher's, check is going to fine.Lack of miao DuanLong, replant in a timely manner.

Shanghai: October cold dew frost, the autumn harvest autumn sowing winter live busy, late rice threshing cotton teds, fine closed a collection.Anhui, cold dew harvest, frost put through.Hunan: October cold dew frost, late rice harvest and digging up potatoes.

Frost keeping in good health

Frost throttle is at the peak of the chronic gastritis and gastroduodenal ulcer recurrence.The elderly can also be susceptible to "old product" (knee osteoarthritis), chronic bronchitis and easy recurrence or worse.At this time should eat more pears, apples, gingko, onion, mustard (potherb mustard).

Frost, belongs to the earth in the five elements, according to zhang, fill in the four seasons five (spring will ascend, summer to qing, long summer tonic to light, autumn to flat, winter tonic to removing the relationship, at this time and long summer belong to the earth, so should be based on principles of fill light, and to increase the gas to nourishing the stomach.

Dietary supplements as basis, tastes, to distinguish between the food.Diet health focuses on according to the "sexual flavour to the" food of adjusting human body's Yin and Yang, nourish intestines and prevent diseases.In traditional health, diet, therefore, according to the "sexual flavour to the" is divided into different types.