Insects awaken
Insects awaken - the sudden movement of spring thunder awakens the animals hibernating in the soil. At this time, the temperature rises quickly, and spring thunder gradually begins to stir. The Waking of Insects falls around March 6 in the Gregorian calendar every year. One of the twenty-four solar terms. Hiding means hiding. "Jingzhe" refers to small animals that have burrowed into the soil to overwinter and are awakened by thunderstorms to move around. On the "Jingzhe" solar term, the earth has reached 345 degrees of solar ecliptic longitude, usually from March 4th to 7th every year.
In ancient China, the Waking of Insects was divided into three periods: "The first period is when peaches bloom; the second period is when Canggeng (oriole) cries; the third period is when eagles turn into doves." The description is that peach blossoms are red, plum blossoms are white, and orioles are At the time of chirping and flying swallows, spring plowing has begun in most areas. When various insects hibernating in the soil are awakened, the eggs that have spent the winter will also begin to hatch. It can be seen that the awakening of insects is a solar term that reflects natural phenological phenomena.
Every year from March 4th to 7th, when the sun reaches 345 degrees of ecliptic longitude, it is the "waking of insects". Jingzhe means that when the weather gets warmer and spring thunder begins to roar, insects hibernating underground are awakened. "Collection of the Seventy-Two Hours of the Moon Order" says: "On the February Festival, everything is shocked, and the earthquake is like thunder, so it is called Jingzhe. It is the stinging insects that are frightened and run away." Tao Yuanming, a poet of the Jin Dynasty, wrote in a poem: "Promote stinging." When it rains in spring, thunder starts to appear in the east, and all the stings hide in fear, and the grass and trees spread everywhere. "In fact, insects cannot hear thunder. The return of spring to the earth and the warming of the weather will make them end their hibernation." reason for leaving. The timing of the beginning of spring thunder varies across China. On average over many years, thunder can be heard in southern Yunnan around the end of January, while the first thunder day in Beijing is in late April. The saying "the start of thunder" is consistent with the climate pattern in the Jiangnan area along the Yangtze River.
“Thunder rings in spring, and all things grow.” The Waking of Insects season coincides with the great “nine-nine” sunny days, when the temperature rises and the rain increases. Except for the winter scene in the northeast and northwest, the average temperature in most parts of China has risen above 0℃. The average daily temperature in North China is 3-6℃, along the Yangtze River and south is above 8℃, while in the southwest and south China The temperature in South China has reached 10-15℃, and it has already been a happy spring. Therefore, the Chinese working people have attached great importance to the Jingzhe solar term since ancient times and regard it as the day when spring plowing begins. There is a poem in the Tang Dynasty that says: "It rains lightly, and all the flowers are new, and a thunder begins to wake up the insects. The fields are idle for a few days, and farming begins." Farmers' proverbs also say: "After the festival of the awakening of insects, spring plowing cannot rest", "Nine poplars bloom, and farm work begins. Come. "Winter wheat in North China has begun to turn green and grow, and the soil is still freezing and thawing alternately. Timely harrowing is an important measure to reduce water evaporation. "If you don't rake the ground when you wake up, it's like steaming steamed buns that have run out of steam." This is a valuable experience of the local people in preventing drought and preserving moisture. Along the Yangtze River and south of the Yangtze River, wheat has already jointed, and rapeseed has begun to bloom. It has high requirements for water and fertilizer. Top dressing should be done in a timely manner. In areas with drought and little rain, appropriate watering and irrigation should be done. Rainwater in the south can generally meet the spring growth needs of vegetables, wheat and green manure crops, but preventing moisture damage is the most important. As the saying goes: "Managing the three intersections of wheat ditches is like pouring manure", "If you want to harvest rapeseed, you must manage the ditches diligently". We must continue to do a good job in clearing ditches and draining water. Early rice sowing in South China should be carried out as soon as possible, and at the same time, work should be done to protect the rice fields from cold. As the temperature rises, tea trees gradually begin to sprout. They should be pruned and topdressed with "germination fertilizer" in a timely manner to promote more branches and leaves and increase tea yield. Peach, pear, apple and other fruit trees should be fertilized before flowering.
"Spring thunder scares hundreds of insects". Warm climate conditions are conducive to the occurrence and spread of various diseases and insect pests, and weeds in the fields have also sprouted one after another. Disease and insect pest control and cultivating and weeding should be carried out in a timely manner. "When peach blossoms bloom, swine fever comes." The epidemic prevention of poultry and livestock should also attract attention.
As the farmer’s proverb goes, “When the Jingzhe Festival arrives, the hoe will not stop.” When the Jingzhe Festival arrives, most areas in China have entered the busy season of spring plowing. It’s true: Seasons wait for no one, and a moment is worth a thousand pieces of gold. The average temperature of the Jingzhe solar term in most areas is generally 12°C to 14°C, which is more than 3°C higher than that of the rain solar term. It is the fastest rising temperature in the whole year. The number of sunshine hours has also increased significantly. However, due to the alternation of warm and cold air, the weather is unstable and the temperature fluctuates greatly.
In the Yangtze River Valley in southeastern South China, the temperature is stable above 12°C during emergency periods in most years, which is conducive to rice and corn sowing. In other areas, there are often low-temperature weather with the daily average temperature below 12°C for more than three consecutive days. Do not blindly start early broadcast. Although the temperature rises rapidly in Jingzhe, the increase in rainfall is limited. The total amount of rainfall during the hibernation period in central and northwest South China is only about 10 millimeters. Following the perennial winter drought, spring drought often begins to emerge. At this time, wheat booting and rapeseed flowering are in a period of greater water demand and are sensitive to water requirements. Spring drought often becomes an important factor affecting early spring yields. This climate characteristic should also be taken into account when planting trees. After planting, watering should be done diligently to improve the survival rate of saplings.
The Waking of Insects, which reflects the natural phenological phenomenon, means: the sudden movement of spring thunder awakens the hibernating animals hibernating in the soil. At this time, the temperature rose rapidly, and spring thunder began to appear in most areas of the Yangtze River Basin. In most parts of southern China, you can hear the first thunder of spring even if it rains all year round. Except for some special years, the thunder in northwestern South China generally does not occur until the Qingming Festival, making thunderstorms the latest to start in most parts of southern China.
In the season of the Waking of Insects, the spring is bright and everything is renewed. Accumulating phenological knowledge through careful observation will be helpful in arranging agricultural activities according to local conditions.
Calculation of the date of the Waking of Insects [Y*D C]-L
Interpretation of the formula: multiply the last 2 digits of the year by 0.2422 plus 5.63 and take the integer minus the number of leap years. The C value of Jingzhe in the 21st century is 5.63.
Example: The date of the Jingzhe in 2088 = [88×.0.2422 5.63]-[88/4]=26-22=4, March 4th is the Jingzhe.