Can the autumnal equinox in 2022 be harvested? What are the temperature changes of solar terms in the autumn equinox in 2022?
Can the autumnal equinox in 2022 be harvested?
The autumnal equinox can harvest autumn, and the autumnal equinox is mostly in September every year. In the autumn equinox, the plants are yellow, the world is ripe, and the fruits are all returned to the warehouse; Therefore, the autumnal equinox is an important solar term in agricultural production; Because since the autumnal equinox, Sanqiu has entered the busy farming season; There are six old sayings that six mature crops need to be harvested in time at the autumn equinox; These six crops are corn, mid-season rice, cotton, peanuts, sorghum and spring-sown soybeans; In addition, there is an old saying that "the crops in late autumn should continue to be managed and harvested when they are ripe." It is pointed out that after the autumnal equinox, many crops will gradually mature and enter a suitable harvest period, and growers need to pay attention to the maturity of these crops in time and harvest them in time to facilitate returning to the warehouse and achieve high yield and bumper harvest.
Every autumn equinox, it is the last time for grain filling and serving. There will be frost in northeast China at this time, but in Jilin Province. If the temperature is as low as 0 degrees or below, frost and freezing will come together, while if the temperature is above 0 degrees, only frost has no holes. Therefore, for farmers in the northeast, the problem of frost at this time is very serious and will always be necessary.
Autumn equinox farming culture
Autumn is the harvest season. The three most important things in autumn are autumn harvest, autumn ploughing and autumn planting. It is usually implemented according to the 24 solar terms and weather conditions. These three busy moments are all in the solar terms of the autumn equinox, so it is very urgent to grab the harvest and seed at the autumn equinox.
The autumnal equinox is the best and busiest time for autumn harvest, autumn ploughing and autumn planting. But the autumnal equinox also has three factors that are not conducive to farming. These three factors are drought, little rainfall and continuous rainfall. The autumnal equinox is the last critical period of crop filling and yield formation in autumn, and the agricultural activities of autumnal equinox are very important. Drought and lack of rainfall or continuous rainfall in autumn equinox are the main unfavorable factors affecting the normal operation of Sanqiu, especially the continuous rainfall will make the upcoming crops lodging, mildewing or sprouting, resulting in serious losses. "Sanqiu" is a great help, and the word "early" is the key. Timely harvest of crops in autumn can avoid the harm of first frost and continuous rain, and timely sowing of crops in winter can make full use of heat resources before winter, cultivate strong seedlings to survive the winter safely, and lay the foundation for high yield in the coming year.
Changes of air temperature in autumn equinox solar terms
From beginning of autumn to the first frost, it belongs to autumn, and the autumnal equinox just divides the autumn equally. At the autumnal equinox, the Yangtze River basin and its vast northern area have entered autumn, and the daily average temperature has dropped below 22℃. The cold air mass in the north began to have some influence. The rainy season has just ended in most areas, with a cool breeze blowing gently. Autumn is crisp and the sky is high and the clouds are light. After the autumnal equinox, the direct sunlight moved to the southern hemisphere, and the northern hemisphere got less and less solar radiation, but the ground lost more heat and the temperature dropped significantly. Agricultural proverbs say: "An autumn rain is a cold", "The white dew is divided into autumn nights, and one night is cold".
Three phenology of autumnal equinox
The ancients divided the autumnal equinox into three stages. At one point, the thunder began to stop. The ancients thought that it thundered because the yang was strong, and the yin began to flourish after the autumnal equinox, so it stopped thundering. Therefore, thunder is not only the end of the hot summer, but also the beginning of the autumn cold. Second, it is a green house with stinging insects. Because of the cold weather, the secluded small insects began to hide in caves and sealed the holes with fine soil to prevent the cold from invading. The water began to dry up in the third season. Due to the dry weather, water vapor evaporates rapidly, the water volume of lakes and rivers decreases, and some swamps and puddles are drying up.