The snail's mouth is on the ventral surface of its head. It has a strip-shaped toothed tongue with many small teeth arranged neatly on it. A toothed tongue can stick out of the mouth to scrape food. When eating, snails lick plants with their tongues, and these teeth grind food like files and deliver it to their mouths.

Snails are omnivorous and have many hosts, which not only harm green leafy vegetables, but also harm many vegetables and crops such as Cruciferae, Solanaceae, Leguminosae and Cucurbitaceae. Both seedlings and adult plants will be hurt.

Snails only eat mesophyll when they are young and leave the epidermis; Older individuals scrape the leaves and stems of plants with their tongues, grind them into small holes or even gnaw off the stems, or the leaves are shapeless, notched, or have residual veins, which can cause seedling shortage and broken ridges in severe cases.

Extended data:

Snail growth environment:

Snails like to live in dark, humid, loose and humus-rich environments, and are most afraid of direct sunlight and sensitive to environmental reactions. Their most suitable environment: temperature16 ~ 30℃ (the fastest growth is at 23 ~ 30℃); Air humidity 60% ~ 90%; The humidity of the feeding soil is about 40%; The pH value is 5 ~ 7.

When the temperature is lower than 15℃, it will hibernate when it is higher than 33℃, and it may freeze or heat to death when it is lower than 5℃ or higher than 40℃. But all kinds of snails are different.

Snails like to burrow into loose humus soil to inhabit, lay eggs, adjust the humidity in their bodies and absorb some nutrients for as long as 12 hours. Omnivorous food and partial eclipse coexist. Love humidity, fear flooding. Snails have a good appetite when they eat wet food on wet nights. But floods will suffocate snails. Self-sufficiency.

As soon as the little snail hatches, it crawls to eat without mother's care. When invaded by the enemy, its head and feet retract into the shell, secreting mucus to seal the mouth of the shell; When the shell is damaged and fails, it can secrete some substances to repair the body and the shell.

Have great patience. Snails have amazing viability and strong cold, heat, hunger and drought tolerance. For example, constant temperature farming. The temperature is constant between 25 ~ 28℃, and the growth, development and reproduction are vigorous.

When a snail crawls, it leaves a line of mucus on the ground, which is a liquid secreted by it. Even if it walks on the blade, there will be no danger.

Baidu encyclopedia-snail