Solar Term Characteristics of Ant Manor in Autumn Equinox

The autumnal equinox solar terms are characterized by equal division of day and night, temperature drop and obvious phenological characteristics.

1, the day and night are equal: at the autumnal equinox, the sun shines directly on the equator, and the day and night time is equal all over the world, which is 12 hours. This is one of the most remarkable features of the solar terms on the autumnal equinox and the origin of its name. This characteristic reflects the influence of the earth's revolution and rotation on natural phenomena.

2. The temperature gradually drops: After the autumnal equinox, the direct point of the sun gradually moves south, and the northern hemisphere begins to enter autumn. With the weakening of solar radiation and the gradual decline of temperature, the weather is getting cooler and cooler, and the temperature difference between morning and evening is gradually increasing. This characteristic reflects the influence of seasonal changes on climate.

3. Obvious phenological characteristics: At the autumnal equinox, due to climate change, many animals and plants began to show obvious phenological characteristics. For example, leaves begin to turn yellow and red, chrysanthemums are in full bloom, and migratory birds begin to fly south. These phenological characteristics reflect the adaptability of organisms to environmental changes and the dynamic changes of natural ecosystems.

Effects of autumnal equinox on crops;

1, the increase of temperature difference between day and night is beneficial to crop growth: after the autumnal equinox, the temperature difference between day and night gradually increases, which is beneficial to crop growth and development. Higher temperature during the day is beneficial to photosynthesis and nutrient accumulation of crops, while lower temperature at night reduces the consumption of respiration and makes crops accumulate more organic matter.

2. Pay attention to irrigation when precipitation decreases: After the autumnal equinox, precipitation decreases gradually, which is unfavorable for some crops that need sufficient water. In order to ensure the normal growth and development of crops, it is necessary to irrigate in time and replenish enough water.

3. When the temperature drops gradually, you need to pay attention to cold protection: With the arrival of the autumnal equinox, the temperature drops gradually, and some temperature-sensitive crops are easily affected by low temperature. In order to ensure the normal growth and development of crops, it is necessary to take some cold-proof measures, such as covering thermal insulation materials and increasing irrigation, to prevent crops from being damaged by low temperature.

These effects have both advantages and disadvantages, so we need to take corresponding measures according to the specific situation to ensure the normal growth and development of crops, and at the same time, we should pay attention to observing the weather changes and adjust the planting and management plans of crops in time.