Spring ploughing begins after solar terms. How can children understand the relationship between solar terms and farming?

Spring ploughing begins after solar terms. How can children understand the relationship between solar terms and farming? It is good to talk to children about popular science, let them understand how food comes from, and let them cherish food more; Due to the influence of climatic factors, the spring ploughing time is different in different regions. The earlier the spring ploughing time in the south, the farther the north, and the later the spring ploughing time. The annual spring ploughing time in the south begins in late February, and rice is sown in March. North China is generally from early March to April, and Northeast China is generally at the end of April. Pay attention to the following points when preparing fertilizer. First, compound fertilizer is mainly used in spring ploughing; Second, it can be used to produce pollution-free agricultural products; Third, fertilizer should be divided into acid and alkali, so be careful when applying fertilizer. Finally, we should prepare some special fertilizers, such as special formula fertilizer, organic fertilizer, trace element fertilizer and so on.

The climate in south and north of China is different. Spring ploughing time is earlier in the south and later in the north. Generally speaking, the temperature in the south rises rapidly, and spring ploughing begins in late February every year, and spring ploughing in the north is generally in March and April. The specific time depends on regional temperature, humidity and other factors. However, it should be noted that the average temperature in most parts of China is 12C _ 14C, which is 3 degrees higher than the solar term of rain, and the temperature fluctuates greatly. Do not broadcast it blindly in advance. Fertilizer preparation should be based on organic fertilizer and combined application of nitrogen, phosphorus and potassium. The specific fertilizer preparation varies from place to place. In terms of solar terms, it is surprising that most parts of the country have entered the busy season of spring ploughing. The season waits for no one, and the moment is worth a thousand dollars. This year's surprise happened on March 5th 10: 56 in Gregorian calendar. That is to say, since March 5th in Gregorian calendar, most parts of China have entered the busy season of spring ploughing. However, it is worth noting that the average temperature in most parts of China is generally from 12℃ to 14℃, which is more than 3℃ higher than that during rainfall, and it is a solar term with a rapid annual temperature rise. The sunshine time of solar terms has also increased, but the temperature fluctuates greatly, so we can't broadcast it blindly early.