What are the characteristics of summer solar terms?

What are the characteristics of summer solar terms? In fact, if it is divided into 24 sections, it is not difficult to distinguish the climatic characteristics that appear in the present! First of all, "summer heat" shows the heat of the weather. Then let's use the old yellow calendar to see the specific characteristics of the summer solar terms!

Characteristics of solar terms in light summer: the average temperature in light summer in southern China is generally around 33℃; In the low-altitude valley area of southeastern South China, the average daily temperature in mid-July is higher than 30℃, and the maximum daily temperature is higher than 35℃. In the northern part of the northwest plateau, frost and snow can still be seen at this time, which is equivalent to the scene of early spring in South China.

Since the beginning of summer, the plum rains in the Jianghuai basin have ended one after another, and the southeast monsoon rainy season from the Pacific Ocean has begun in the vast areas north of the Huaihe River and east of the Qinling Mountains. The precipitation has increased significantly and the rainfall is relatively concentrated. South China, Southwest China and Qinghai-Tibet Plateau are also in the southwest monsoon rainy season from the Indian Ocean and the South China Sea. The middle and lower reaches of the Yangtze River are generally hot and rainy under the control of subtropical high. In some years, the cold air force in the north is still strong before and after the slight summer heat, and it is evenly matched with the warm air in the south in the middle and lower reaches of the Yangtze River, leading to frontal thunderstorms. Thundershowers in summer are often the weather information of "yellow plum falling", which indicates that the rain belt will stay in the middle and lower reaches of the Yangtze River for some time.

Around the summer heat, most of southern China entered the season with the most thunderstorms. Thunderstorm is a disastrous weather phenomenon, often accompanied by strong winds, heavy rain and sometimes hail, which is easy to cause disasters. In the eastern part of South China, because it is often controlled by subtropical high, it is often sunny and hot, and after experiencing a slight summer heat, it begins to enter the summer drought period. Climatic characteristics of drought in the east and waterlogging in the west in most parts of southern China.

Climate and agriculture Before and after summer, agricultural production was mainly engaged in field management except winter and spring wheat harvest in Northeast and Northwest China. Early rice is in the late filling stage, and early-maturing varieties should be harvested before the heat, and the field should be kept dry, moist and dry. Mid-season rice has entered booting stage at jointing stage, so it should be topdressing panicle fertilizer according to its growth situation to promote large panicle and more grains. The single-season late rice is tillering, so tillering fertilizer should be applied as soon as possible. The second night seedlings should be well protected against pests and diseases, and "marriage fertilizer" should be applied 5-7 days before planting.

"It's hot in summer, and the cotton keeps pruning." In most cotton areas, cotton began to blossom and boll, and its growth was the most vigorous. At the same time, old leaves should be pruned and raked in time to coordinate the distribution of nutrients in plants, enhance ventilation and light transmission, improve the microclimate of the population and reduce the shedding of buds and bolls. High temperature in midsummer is the season when aphids, red spiders and other pests flourish, and timely prevention and control of pests and diseases is another important link in field management.

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