What are the weather characteristics of Xiaoshu?

　　During the Slight Summer Season, the plum rains in the Jianghuai River Basin are about to end, and midsummer begins. The temperature rises and enters the drought period.； North China and Northeast China have entered the rainy season, with frequent tropical cyclone activity, and the number of tropical cyclones landing in my country has begun to increase.

　　With the beginning of Slight Heat, the plum rains in the Yangtze and Huaihe River basins have ended, and the southeast monsoon rainy season from the Pacific has begun in the vast area north of the Huaihe River and Qinling Mountains in eastern my country. The precipitation has increased significantly, and the rainfall is relatively concentrated.； South China, Southwest China, and the Qinghai-Tibet Plateau are also in the southwest monsoon rainy season from the Indian Ocean and the South my country Sea. ； The middle and lower reaches of the Yangtze River generally experience high temperatures and little rain under the control of subtropical high pressure. Frequent droughts have a great impact on agricultural production. It is very important to store water early to prevent drought.

　　A farmer’s proverb says: “The rain in the dog days is like the rice in the pot. ”Although the precipitation brought by thunderstorms, tropical storms or typhoons at this time is very beneficial to the growth of crops such as rice, it sometimes has adverse effects on dry crops such as cotton and soybeans and vegetables. In some years, the cold air in the north is still strong before and after the minor summer heat, and is evenly matched with the warm air in the south in the middle and lower reaches of the Yangtze River, causing frontal thunderstorms. “Thunderstorms in the Minor Heat period turn into yellow plum blossoms. Thunderstorms in the minor summer season are often the weather information of "yellow plum blossoms in reverse form." It indicates that the rainbands will remain in the middle and lower reaches of the Yangtze River for some time.

　　Before and after the Slight Heat, except for harvesting winter and spring wheat and other crops in the northeast and northwest regions, agricultural production is mainly busy with field management. Early rice is in the late grain-filling stage, and early-maturing varieties must be harvested before the heat. The fields must be kept dry and wet. The middle rice has been jointed and has entered the booting stage. Topdressing fertilizer should be applied according to the growth situation to promote large ears and more grains. Single-season late rice is tillering, so tillering fertilizer should be applied as soon as possible. It is necessary to prevent and control diseases and insect pests of double late seedlings, and apply sufficient "bridal fertilizer" 5 to 7 days before planting. “The weather is hot during Xiaoshu, and cotton pruning is non-stop. ”Cotton in most cotton areas has begun to bloom and form bolls, and is growing most vigorously. While heavily applying flower boll fertilizers, branches should be pruned, branched, and old leaves removed in a timely manner to coordinate the distribution of nutrients in the plant, enhance ventilation and light transmission, improve the microclimate of the population, and reduce the shedding of buds and bolls. The high temperatures in midsummer are the season when many pests such as aphids and red spider mites flourish. Timely prevention and control of pests and diseases is another important step in field management. “

　　After the mild summer heat, the south should pay attention to drought prevention, and the north should pay attention to flood prevention. Crops across the country have entered a stage of vigorous growth, and field management needs to be strengthened.