Five kinds of meteorological plants

Five meteorological plants: Sweden has a kind of "warm grass" that can measure temperature like a thermometer. When the temperature is above 20℃, its blades protrude obliquely upward; At 15℃, the blades will be parallel to the ground; When the temperature is 10℃, the blades extend obliquely downward and bend; If the temperature rises, the blades will return to the corresponding state.

Rain lily, also known as rain lily, often blooms suddenly after heavy rain in spring and summer. The flowers are colorful and divided into onions and leeks according to their leaves. According to the florist who planted it, from July to September, whenever the storm passes, Yulan will bloom. Before the storm, the outside air pressure decreased, the weather was sultry, and the transpiration of plants increased. The bulbs of yuhua district store nutrients and produce a lot of hormones to promote flowering, so a large number of flowers will be produced.

Pine cone: Before the rainy day comes, the scales of pine cones will shrink because of the high air humidity. When the scales of pine cones open, it indicates that the air is dry and the weather will turn from rainy to sunny. Pinecone is the fruit of Pinaceae, which contains seeds when it matures. Pine cones look like spires. It is about 6~ 10 cm long and 3 cm wide. The body is like a fish scale, with white and black colors.

An agricultural proverb says, "When a river is covered with moss, there will be heavy rain." The principle may be: shanghai dawn, the air pressure drops sharply. At this time, the water pressure decreases, and the moss at the bottom of the river will naturally surface. Moss is the general name of bryophytes, which grows on the surface of objects, so it is also called moss coat. Moss is green and as thin as silk. It can be attached to rocks, pools, roofs, decaying walls, wetlands and other dark, damp and inaccessible places, just like hair. This is a very humble but very interesting plant.

In hot summer, if all the willow leaves are found to be white, there may be rainy weather. Willow leaf, the name of traditional Chinese medicine. It is the leaf of weeping willow in Salicaceae. Weeping willows are resistant to water and moisture, and can also grow in dry places. It is distributed in the Yangtze River and Yellow River basins and cultivated in other places.