Why does Jingzhe mean spring plowing
Jingzhe, one of the twenty-four solar terms, is located at the third. During the thrilling season, spring is sprouting, and nature has new vitality. The working people of China have attached great importance to the startling solar terms since ancient times, and regarded it as the day when spring plowing began.
There is a saying in the Tang poem: “The light rain, the flowers are new, the thunder starts to sting. The fields are idle for a few days, and the farming starts from now on.” At this time, the winter wheat in North China began to grow green, and the soil was still freezing and thawing alternately. Timely harrowing of the ground is important to reduce water evaporation. Measures.
Jingzhe means that the weather is getting warmer, and the thunder of spring starts to awaken the snakes, insects, rats and ants that are dormant in the ground for overwintering. Sting means to hide. In fact, insects cannot hear the sound of thunder. The earth rejuvenates and the rhythm of nature is the reason that makes all kinds of sting insects feel and start to move.
During the thundering season, spring thunderstorms, rains increase, and temperature rises. All things are full of life. It is a good time for all things to grow. The crops of this kind can be planted. Jingzhe is a good time for farming. As the temperature rises and sunshine increases throughout China, the spring plowing season is gradually entering from south to north.
The startling stings are divided into three periods: “The first period is peach blossoms; the second period Canggeng (huang ori) calls; the third period the eagle turns into a dove.” The description has entered the mid-spring, the peach blossom is red, the pear blossom is white, the yellow oriole screams, and the swallows fly. season.
According to the general climatic law, the weather in various places has begun to warm up before and after the start of the sting, and the rain has gradually increased, and most areas have entered spring plowing. When the various insects hibernating in the soil are awakened, the eggs of the wintering insects will also start to become eggs. It can be seen that Jingzhe is a solar term that reflects the phenomenon of natural phenology.
After the “Jingzhe” solar term, the warm and humid air masses in the south became active, and the temperature rose rapidly. Spring thunders began to occur in most areas south of the middle and lower reaches of the Yangtze River. In the northwestern part of North China, except for a few years, thunder generally did not occur until the Qingming Festival.
As the solar term with the fastest rise in temperature throughout the year, the average temperature in most parts of northern China has risen above 0℃, except for the northeast and northwest regions that are still covered in silver makeup. The average daily temperature in North China is 3 to 6 ℃;
The temperature in the Jiangnan area along the Yangtze River is above 8°C, while the Southwest and South China regions have reached 10 to 15°C or above. It is already a blessing, and the sunshine hours have also increased significantly. Judging from the natural phenology and climatic processes in various parts of China, the “Startling Thunder” only coincides with the natural rhythms in parts of southern China.
The agricultural proverb “When the Jingzhe Festival comes, the hoe will not stop.” When it comes to the Jingzhe, most areas of China enter the busy season of spring ploughing. It’s true: the season waits for no one, and a moment is worth a thousand dollars.
In most areas, the average temperature of the Jingzhe solar terms is generally 12°C to 14°C, which is more than 3°C higher than the rain solar terms. It is the solar term with the fastest temperature rise throughout the year. The number of sunshine hours has also increased significantly. However, the weather is unstable and the temperature fluctuates greatly because of the alternating cold and warm air.
In the Yangtze River Valley in southeastern South China, the temperature is stable above 12°C during the stinging period in most years, which is beneficial for rice and corn planting. In other areas, there are often more than 3 consecutive days of low temperature weather with daily average temperature below 12°C. Early planting is not allowed blindly . Although Jingzhe’s temperature rises rapidly, the increase in rainfall is limited.
The total amount of rainfall during the stinging period in central and northwestern South China is only about 10 millimeters. After the perennial winter is dry, spring droughts often begin to emerge. At this time, wheat booting and rape blossoming are in the period when more water is needed, and they are sensitive to water requirements. Spring drought often becomes an important factor affecting the yield of the early spring. Tree planting and afforestation should also consider this climate feature. After planting, it is necessary to water diligently and strive to increase the survival rate of saplings.
When the average daily temperature of rice is stable above 8℃, dry seedlings can be sown. Before sowing, choose fertile, loose, and deep-soiled vegetable gardens or dry farming land as seedbeds. Apply 50 kg of 45% ternary compound fertilizer, 5 kg of potassium chloride, and 10 to 15 kg of urea per mu 20 days before sowing. seedbed.