Two common small animals in Grain Rain.

Grain Rain is the sixth solar term among the 24 solar terms and the last solar term in spring. On April 19-2 1 every year, when the sun reaches the longitude of 30 degrees of the Yellow River, it is Grain Rain, which comes from the old saying "Rain makes a hundred valleys". Rain is the best time for sowing, transplanting and ordering beans. Xiao Jingwei said, "On the fifteenth day after Qingming Festival, it was Grain Rain, who said that rain gave birth to hundreds of valleys, and things were quiet and clean." "Fang Quan Spectrum" said: "Grain Rain, there is rain in the five grains." At this time, the lake is fascinated by jade, the grass is drunk with dragonflies, the birds are playing with tung flowers, the rain is turning over duckweeds, and the residual flowers are falling. Spring is coming from now on.

2065438+April 22, 2009 at 7: 45 am? I got out of the dormitory and got on the 406 bus to go to work. There was a traffic jam all the way and the car was driving very slowly. All the passengers are office workers. After three traffic lights, I finally got off. I still have a long way to go at this time. This section of the road is mainly the cement road leading to the city gymnasium. On both sides of the road are green lawns and tall and neat evergreen trees. I was walking on this concrete road when I suddenly looked down and found one or two jumping black spots. These little black spots move between the cement road and the green lawn. I saw a little black dot jumping forward. I followed closely and observed carefully: it turned out to be a small toad (very small, with just long limbs, black body and some small protrusions on its black skin). ) Not pretty, but cute. They jumped in groups, busy catching food and playing, and gradually disappeared into the green lawn. .......

Toad, also known as toad, is an amphibian with porous skin (rough skin and large and small papules on the back, which are sebaceous glands). The largest pair is the retroauricular gland located above the tympanic membrane of the head. The white venom secreted by these glands is the raw material for making toad venom. In addition, they are not protected by structures such as amniotic membrane and shell from birth, which makes them more sensitive to the environment than other groups, and they are considered as the weather vane to detect environmental changes. They like to hide in mud pits, under wet stones, in the grass and beside ditches. Skin loses moisture easily, so it often hides during the day and comes out at dusk. Especially after rain, they tend to concentrate on dry places to prey on various pests. They hunt and move at night, feeding on beetles, moths, snails and fly maggots. According to Compendium of Materia Medica and other records, toad skin is a natural panacea for intractable diseases such as malignant swelling and toxin. Especially, it can resist the spread of cancer cells and inhibit the growth of cancer cells. In addition, it has obvious therapeutic effect on dozens of diseases such as hepatitis B, liver cirrhosis, hepatic ascites, leukemia, furuncle, sore, breast tumor, bone tuberculosis, osteomyelitis, infantile malnutrition, dysentery fever and so on.

I walked along the cement road intermittently, and I met another small animal-snail. At first, one, then three or four, appeared intermittently. They also come out to exercise and feed.

Snails are the most common mollusks on land, including many different families and genera. Feed on plants and lay eggs in soil or trees. Common in tropical islands, but some live in cold regions. Arboreal species are brightly colored, while terrestrial species usually have several similar colors and stripes. The crystal snail in Africa is the largest, more than 20 centimeters. Several species of the genus Megasnail in Europe are often used as delicacies, especially in France.

The whole body of a snail includes eyes, mouth, feet, shells, tentacles and other parts. The spiral shell on its back has different shapes and colors. Their shells are pagoda-shaped, gyro-shaped, conical, spherical, tubular and so on. White jade snail, covered snail, scattered snail, bright snail and brown cloud agate snail all have their own unique shapes. Snail eyes grow on a pair of antennae at the back of the head.

Snails have the most teeth, but their teeth are not "three-dimensional teeth". Although there are thousands of teeth, they can't chew food. This is because they use toothed tongues (snails have the most teeth in the world. Although its mouth is only the size of a needle tip, it has more than 26,000 teeth. There is a small hole in the middle of the snail's small antenna, which is its mouth. There is a serrated tongue inside, which scientists call "toothed tongue". )-A band-shaped structure covered with food crushed by teeth for digestion. During their lifetime, their small teeth will slowly wear out and be passivated, and then they will be replaced by sharper new teeth. Snails excrete near breathing holes, which are called stomata. It will discharge feces on itself, and finally leave feces on the ground through the abdomen and mucus.

The mantle cavity of a snail will form 1 openings at the mouth of the shell, which are called "breathing holes" and are places where gas enters and exits. Careful observation shows that the breathing hole is often opened and closed, just like the "nose" used by snails to breathe; When the snail retracts into the shell, it still leaves the opening of the breathing hole at the shell mouth for breathing. The mantle is often located between the feet or visceral masses, forming a 1 cavity communicating with the outside world, which is called "mantle cavity". Snail's respiratory organs are hidden in the sleeve cavity, sometimes through the snail's shell, you can vaguely see the dense pulmonary vascular network under the shell, mostly located in the front side, near the head, that is, the position of the sleeve cavity.

Chickens, ducks, birds, toads, turtles, snakes and hedgehogs all eat snails, while fireflies mainly eat snails. Snails can generally live for 2-3 years, up to 7 years at the longest, but most of them may become food for other animals in that year.

According to the determination, every 500g of snail meat contains 90g of protein and various nutrients needed by human body, such as amino acids, vitamins, calcium, iron, copper and phosphorus. It is a food with high protein and low fat. Snails are cold and salty. It has the effects of clearing away heat, relieving swelling, detoxicating, promoting diuresis, relieving asthma and softening hard mass. The contained enzymes can eliminate stagnation, while glutamic acid and aspartic acid can enhance the vitality of human brain cells. Scientists believe that eating more snails has nutritional and cosmetic effects on skin and hair.

I think the appearance of these two small animals is probably due to the heavy rain last night. Now that the rain has stopped (it has turned cloudy), this climate is very suitable for them to go out. Seeing them appear, I think it's also quite interesting. Unfortunately, there is not much time to observe their activities. ......