When is the summer solar term? When is the summer of the year?

Introduction: The arrival of the summer solar term every year means that it will usher in the hottest time of the year, especially in summer, which is in the dog days. Therefore, there will be continuous high temperature weather all over China, but we all know when summer is in a year. Let's talk in detail about when the summer solar term is.

Generally, the summer solar term is around July 22-24 of the Gregorian calendar every year, and it is regarded as the summer solar term when the sun reaches 120 degrees. The summer heat of 202 1 is at 22:26: 16 on July 22nd of Gregorian calendar. The climate at this time is characterized by high temperature and heat, frequent thunderstorms and abundant rainfall. In addition, it is around mid-midsummer, so most parts of China are the hottest period in a year, and it is also the fastest growing period of heat-loving crops.

The origin of summer heat and solar terms

The twelfth of the 24 solar terms is Daxia, the last solar term in summer. Every year from July 22nd to 23rd in Gregorian calendar, the solar sun arrives at120th, which is a solar term in summer. Like summer heat, summer heat is also a festival reflecting the degree of summer heat, which means the weather is extremely hot. The ancients in China divided the Great Summer into three periods: "Rotten grass is firefly; Second, wait for the soil to moisten and cool off the heat; It clears up when it rains. "The summer solar term is just around the Mid-Autumn Festival in the dog days. It is the hottest period of the year, with the highest temperature and the fastest growth of crops. At the same time, meteorological disasters such as drought, waterlogging and wind disaster are also the most frequent in many areas. It is very important to harvest and seed, fight drought and drainage, prevent typhoons and manage fields. In summer, there are some customs such as drying ginger, drinking tea, burning incense and sending "summer boats". At this time, the weather is hot and humid, which easily leads to excessive moisture in the body. Health care should not only know how to prevent heatstroke and cool down, but also pay special attention to getting rid of its own moisture.

Why is the hottest solar term in a year?

Because the summer solar term happens to be the most sunny time in our country in a year, the heat absorbed during the day can't be completely released at night, and the residual heat keeps accumulating. In addition, the temperature is already very high at this time, and people's somatosensory temperature will feel very hot, especially when there is no sun at night. Slight summer heat and great summer heat are both solar terms representing the degree of heat, and they are also in the hottest dog days. It is the hottest time in dog days, so it is not surprising that the summer heat is the hottest solar term in a year.

How many days are there in summer solar terms?

Generally speaking, the high temperature lasts * *16 days in summer in China, and the hot summer lasts ***6 days. The summer heat is the twelfth solar term in the twenty-four solar terms of the lunar calendar. At this time, the sun reaches the longitude of the yellow meridian 120 degrees. The first15th day after the slight summer heat indicates that it is not the great summer heat, but the middle of June. Small and big are extremely hot, divided into sizes, small at the beginning and big at the back. Summer heat, which means hot, is a little hot, not very hot. It means that the weather is getting hotter, but it is not the hottest, and most parts of the country are basically in line with it. Crops all over the country have entered a vigorous growth period, and it is necessary to strengthen field management. Summer solar term is the hottest period in a year, with the highest temperature and the fastest growth of crops. At the same time, some natural phenomena such as drought, waterlogging and wind disaster are also the most frequent in many areas.

Agricultural activities under high temperature in summer

In summer, the weather reached the hottest period, and all kinds of warm-loving crops also reached the fastest growing season. Cotton in Northeast China and other places has entered the flowering and bolling stage, and soybean has reached the flowering and fruiting stage. At this time, at the peak of crop water demand, attention should be paid to irrigation and water replenishment.

If the weather is dry in the morning, cotton will drop flowers and bells, and soybeans will drop pods. Rice, corn and sorghum in Northeast China and North China have headed and blossomed. Mid-season rice in the Yangtze River basin heads and spring corn matures. At this time, in addition to the hot weather in the north, the rainy season has arrived, and it is easy for the south to flood ahead of time. Climate change is also the most intense period, and different degrees of lightning and hail will appear one after another. Attention should be paid to farmland management to reduce harm and loss.