Phenology knowledge: Because it must be sultry before it rains, and cicadas will scream more and more fiercely when it is sultry.
2, ants move the snake aisle, there will be heavy rain tomorrow.
Phenological knowledge: When it rains, the rain will wash away the home of ants or snakes, so they will move before the rain comes.
3, long summer, good harvest.
Phenological knowledge: Earthworms usually appear after rain. Earthworms come out of the hole in the long summer, which proves that the rain is not small, so this year's harvest is better.
4. The sun is dizzy and rainy, and the moon is dizzy at noon.
Knowledge of phenology: Halo and lunar halo are atmospheric optical phenomena, and their formation is related to cirrostratus. There are tiny ice crystals in cirrostratus. When sunlight or moonlight shines on these ice crystals in cirrostratus, due to the prism effect of the ice crystals, sunlight or moonlight is refracted and reflected to form solar halos and solar halos.
Because cirrostratus, which is rich in ice crystals, is generally a harbinger of thunderstorm invasion, when the phenomenon of solar halo and lunar halo occurs, it usually indicates that the weather will change and there will be wind and rain in a short time.
Swallows fly low, it's going to rain.
Phenological knowledge: Before it rains, the air humidity is high on cloudy days, and the wings of flying insects will be covered with water vapor and will not fly very fast, so swallows will fly very low when they come out to hunt.
6, the morning glow does not go out, and the sunset glow travels thousands of miles.
Phenological knowledge: Sunglow appears in the east, while there are thick clouds in the western sky. Affected by the westerlies, there will be systematic precipitation weather. When the sunset glow appears in the west, there are generally no large-scale clouds in the western sky, and the sun shines directly on the earth, which is a sign of systematic weather crossing the border.
On July 5 13, every household will have a yellow valley.
Phenological knowledge: May 13th of the lunar calendar is a rainy festival. If it rains this day, there will be a bumper harvest of millet this autumn, and there is no place to store more millet. Every household needs to build a new grain depot.
8, fat but spring rain, bitter but autumn frost
Phenological knowledge: If it rains in spring, the seedlings will grow well and many crops will be harvested in autumn. If it is very cold in autumn, the first frost will be produced and the harvest will be lost.
9, cold sees three whites, farmers have plenty of food and clothing.
Phenological knowledge: If it snows more in the cold season, locust larvae will freeze to death, so that the crops in the coming year will not be affected by insect pests, and the crops will be bumper and the farmers will have plenty of food and clothing.
10, spring rain is as expensive as oil?
Phenology knowledge: Spring crops need water, and with water, they will grow fast! So spring rain is very precious.