What has changed in beginning of autumn?

What happened in early autumn is explained as follows:

After beginning of autumn, the crops began to mature gradually. At this time, the high temperature turns to low temperature, which is beneficial to the maturity of crops, and the water will gradually decrease, so some crops planted in summer will gradually mature. In addition, after beginning of autumn, the position of the sun will shift, photosynthesis will be weakened, and crops will quickly mature and reach the harvest time under good illumination. In addition, the illumination after beginning of autumn has a great influence on the growth and development of crops.

(1) The solar term in beginning of autumn is the time when early rice is harvested and dried. At the same time, double-cropping late rice should be planted in time, and temperature control measures such as spraying water and fertilizer on leaves should be taken to prevent high temperature damage.

(2) Topdressing and ploughing. The solar term temperature in beginning of autumn will change from high to low. At this time, it is necessary to seize the opportunity of high temperature, topdressing and ploughing, and strengthen field management.

(3) pest control. Various pests and diseases, such as yellow rice borer, rice leaf frog, rice planthopper, etc. , are easy to appear in beginning of autumn season, so it is necessary to strengthen the prediction and prevention. (4) pest control. The pests and diseases that are harmful to corn are meadow moth, third generation armyworm, second generation meadow moth, cotton bollworm and so on. At this time, the corn grows very tall. If it is not convenient to apply medicine manually, you can use drones to spray medicine, saving time and effort.

(5) topdressing. After beginning of autumn, maize turned to heading stage, which is the key period for high yield of maize. At this time, quick-acting nitrogen fertilizer should be applied topdressing. For fields with a yield of more than 5 kg per mu, fertilization can be carried out according to the ratio of 15 with 2 kg urea and 1 kg potassium sulfate.