Phenological characteristics of autumnal equinox season

The phenological characteristics of the autumnal equinox are that the weather is cool and dry, the earth is full of vitality, animals are ready to hibernate, and the weather changes obviously.

1. At the autumnal equinox, day and night are equally divided, and the length of day and night is the same. The weather in this period is characterized by large temperature difference between morning and evening, abundant sunshine during the day and cool and dry at night.

The earth is full of life. At this time, it is the autumn harvest season, the crops are gradually maturing, and farmers are busy harvesting farmland. At the same time, the autumnal equinox is also an important period for forestry and fruit industry. Apples, pears, persimmons and other fruits are gradually maturing, and the orchard is fruitful.

The autumnal equinox is also the time for animals to prepare for hibernation. Some animals began to store fat to prepare for the cold weather in winter. For example, squirrels will look for more food to store, while bears will start to enter caves to prepare for hibernation.

Meteorological changes are also very obvious. At this time, most parts of China will be affected by the subtropical high, with sunny weather and moderate temperature. At the same time, due to the dry air, static phenomena will be more frequent.

Characteristics of crops in autumn harvest season:

There are many kinds of crops in autumn harvest season, including corn, rice, soybean, millet, black rice, glutinous rice, sorghum, sweet potato, sweet potato, purple potato, peanut, melon seeds, potato, pepper, radish and Chinese cabbage. These crops are common harvest crops in autumn.

The harvest methods are also different. For example, rice is harvested manually or mechanically, and corn is harvested mechanically. Pepper is picked by hand, and the picking time is different. It needs to be determined according to different varieties and uses.

2. Crops harvested in autumn have different growth cycles. For example, rice is a long-day crop, which needs continuous sunny days to mature, while corn is a short-day crop, which can complete its growth cycle in a short time. In addition, the growth cycle of pepper is also very short, from sowing to picking only takes a few months.

3. Autumn harvest crops are planted in a wide range. These crops are grown all over the world, especially in Asia and Latin America. In addition, the planting conditions of these crops are also different. For example, rice is suitable for planting in areas with higher temperatures, while corn can be planted in various climatic conditions.