Detailed explanation: which solar term is behind the great summer heat?

Summer is the twelfth of the twenty-four solar terms. The sun is located in the yellow meridian 120, which is also in the dog days. This is the hottest time of the year, and it is also the season when people are most prone to emotional changes. So, do you know which solar term is behind the great summer heat? What are the characteristics?

Come with me to reveal the secret!

Which solar term is behind the summer heat (beginning of autumn)?

Beginning of autumn is the 13 solar term in 24 solar terms, the end of the last month of the dry calendar and the beginning of applying for the moon; The time is around the first day of July in the lunar calendar (between August 7 and 9 in the Gregorian calendar). "Autumn" means that summer is cool, which means the beginning of autumn.

"It's so hot after beginning of autumn", the temperature in most parts of China is still high before and after beginning of autumn, and all kinds of crops grow vigorously. Mid-season rice blooms and bears fruit, round stems overnight, soybean pods, corn ears, cotton bolls and sweet potato tubers expand rapidly, and the demand for water is very urgent. The drought in this period will cause irreparable damage to the final harvest of crops. Therefore, there are sayings that "the rice turns into rice after three rains in beginning of autumn" and "the autumn rain is falling, and gold is everywhere".

Double-night growth is in a high-temperature to low-temperature environment, so we must seize the favorable opportunity of high temperature, topdressing and ploughing to strengthen management. At present, it is also an important period for cotton to protect peaches and catch autumn peaches. "Cotton beginning of autumn, the height is pulled together." In addition to applying quick-acting fertilizer to the fields with poor growth, topping, pruning, removing old leaves and wiping redundant buds should be carried out in time to reduce boll rot and boll dropping and promote normal maturity and boll spitting. Autumn ploughing in tea garden should be carried out as soon as possible. As the agricultural proverb says, "seven gold diggers and eight silver diggers", autumn tillage can eliminate weeds, loosen soil and improve water conservation and storage capacity. If combined with fertilization, autumn shoots can grow better.

Before and after beginning of autumn, the northern Chinese cabbage should be sown quickly to ensure sufficient heat conditions before the low temperature comes, and strive for high yield and high quality. Sowing is too late, the growth period is shortened, the growth of vegetable trees is small, and the core is not solid. Beginning of autumn season is also a concentrated period of many crop diseases and insect pests, such as yellow rice borer, rice leafhopper, rice planthopper, cotton bollworm and corn borer. Therefore, it is necessary to strengthen prediction and prevention. The sowing of winter wheat in the north is about to begin, and preparations such as soil preparation and fertilization should be made as soon as possible.