CATDOLL : CATDOLL: What soil do earthworms live in?

Question 1: What kind of soil do earthworms usually live in? Living environment of earthworms: They live in burrows in moist, loose soil rich in organic matter. They feed on organic matter in the soil or stems and leaves of plants.

Question 2: Why can earthworms live in the soil? The soil can provide moist conditions so that the earthworms will not die due to skin dehydration.

There is enough air in the soil for earthworms to breathe and there is enough humus in the soil for earthworms to eat.

The soil temperature is relatively constant, ensuring the temperature requirements of earthworms

Question 3: What kind of soil do earthworms usually live in? What kind of environment do they like like snails? Earthworms usually live in (moist) and (soft) soils. Like snails, they like (moist) and (dark) environments.

Question 4: What are the benefits of earthworms to the soil? The role of earthworms in improving the soil

The earthworm is a very ancient animal. For millions of years, it has lived silently in the soil, working tirelessly to add nutrients to the soil and make green plants grow lushly.

People say that earthworms are the "heroes" of soil improvement, and this is absolutely true. Earthworms dig the soil, making it loose and allowing air and water to easily reach the roots of plants. The holes and channels dug by earthworms help the soil drain quickly. Dr. Oliver of the United States estimates that if 1 million earthworms inhabit 15 acres of land, it can completely replace the work of three skilled gardeners taking turns to do eight hours a day throughout the year, and 1.8 tons of earthworm manure can be obtained every year. In recent years, farmers in some countries have implemented the "no-till method". They use a method of increasing the number of earthworms in the soil to replace mechanical farming, which not only saves manpower and material resources, but also improves the soil.

Earthworms contribute a lot to plant growth. Earthworms live vertically in the soil, eating with their heads facing downwards. Every day, they can eat organic matter equivalent to their own weight, of which about half is excreted on the ground as feces. According to the test of earthworm manure by the National Fertilizer Quality Inspection Center of the Ministry of Agriculture and other units, earthworm manure contains 1.4%, 1% and 1% nitrogen, phosphorus and potassium respectively, 46% humic acid, 23 kinds of amino acids, rich earthworm protease, and 105×8 beneficial microorganisms per gram of earthworm manure (only 105-106 in aged soil). It has the characteristics of uniform particles, breathable and water-retaining, odorless and hygienic, and lasting fertilizer effect. Earthworm manure with 85% water content can still reach 45% at a depth of 20 cm after being exposed to the sun for 15 days in the hot summer, which greatly enhances the drought resistance of the soil. The earthworm enzyme in earthworm manure can also kill viruses, harmful bacteria and substances that inhibit plant growth in the soil. Earthworm manure is an ideal natural biological fertilizer.

In addition, earthworms can also degrade and disperse pollutants in the soil. Sewage irrigation, the deposition of polluted dust, and the abuse of pesticides and fertilizers have caused soil pollution, and earthworms can absorb and decompose pollutants in their habitat, such as organic pesticides, heavy metals, and radioactive substances. Some factories abroad have built tall earthworm manure air purification towers, which can detoxify and remove toxic and malodorous gases. In the United States, research is being conducted on using earthworms to purify urban sewage, turning it into clean water that flows back into the river.

Because earthworms have such great potential in improving soil, many earthworm farming companies have been established in major cities such as Tianjin, Shanghai, and Guangzhou. As the world's population grows, many soil problems will have to be solved by earthworms, and earthworm farming will become an emerging industry.

Question 5: What kind of soil environment is suitable for earthworms to live in? Earthworms like to live in fertile soil environment.

Question 6: Earthworms generally live in ( ), ( ) and other soils. Like snails, they like ( ) ( ) environments. Earthworms generally live in (moist), (soft) and other soils. Like snails, they like (moist) ( dark) environments.

Question 7: What does it mean that earthworms live in the soil and can loosen the soil? This sentence alone can only mean C.

Question 8: What are the characteristics of the living environment of earthworms? They usually live in dark and moist soil, in moist and loose soil 10-30 cm deep. Appearance characteristics: usually gray (brown), with a very fast body. They belong to the class Chaetopoda, order Oligochaeta, annelid.

Physiological characteristics: No eyes, but have cells that can sense light, no ears, well-developed tactile organs, and can react sensitively to ground vibrations, noise, light and darkness.

Since earthworms live in holes in the soil for a long time, their body shape, structure and living habits will inevitably adapt to their living environment to a certain extent. This is the result of natural selection.

First of all, the head has degenerated due to its cave-dwelling life. Although there is a fleshy protrusion called the preoral lobe at the front of the body, which can take in food when it expands and squeeze soil and dig caves when it shrinks and becomes pointed, since it lives underground all year round and does not rely on vision to find food, there are no eyes with visual functions on the preoral lobe, but only some cells that can sense the intensity of light or have vision.

The earthworm's locomotion organs are bristles, which means it relies on bristles to move. Using bristles, it can support its body in the cave or meander forward or backward on the ground.

The body of an earthworm is composed of many body segments. There is a small hole in the middle of the back between each body segment, called the dorsal pore. This small hole is connected to the inside of the body, so its body cavity fluid can be ejected from this small hole. This fluid is used to moisten the body to increase its lubricity in the soil hole, reduce friction with rough sand particles, and prevent the body surface from drying out. In addition, the moisture of the body surface is closely related to the breathing of the earthworm, because it does not have special respiratory organs, and mainly exchanges oxygen and carbon dioxide through the moist epidermis.

The sensory organs of earthworms are also underdeveloped because of their burrowing life. They only have small protrusions on their skin that can sense touch, sensory cells in their mouths that can identify food, and photoreceptor cells mainly distributed on the front and back of the body. These photoreceptor cells can only be used to distinguish the intensity of light and have no visual function.

(II) The six likes and six fears of earthworms

Six joys:

Like darkness: earthworms are nocturnal animals. They hibernate in soil caves during the day and go out at night, usually from 8 pm to 4 am the next morning in summer and autumn. They feed and mate in the dark.

Like moisture: Natural terrestrial earthworms generally like to live in moist, loose soil rich in organic matter, especially in fertile gardens, vegetable gardens, cultivated land, ditches, rivers, ponds, channels, as well as sewers near canteens, garbage dumps, under water tanks, etc.

Like quiet: Earthworms like a quiet environment. Earthworms living around industrial and mining areas often grow poorly or escape.

Thermophilic: Although earthworms are distributed worldwide, they prefer relatively high temperatures. They stop growing and developing at temperatures below 8°C. The optimum temperature for reproduction is 22-26°C.

Like sweet and sour taste: Earthworms are omnivorous animals. They do not eat glass, plastic, metal and rubber, but eat everything else, such as humus, animal feces, soil bacteria, and the decomposition products of these substances. Earthworms have a keen sense of taste and like sweet and sour food. They hate bitter taste. They like to heat and soften soft feed, and are particularly greedy for animal food. The amount of food they eat each month is equivalent to their own weight. About half of the food passes through the digestive tract and is excreted as feces.

Like to live with the same generation: Earthworms have the habit of not wanting to live with their offspring. Especially in high-density conditions, if the young reproduce too much, the old ones will lose their tune and move away.

Six fears:

Fear of light: Earthworms are negatively phototactic, especially avoiding strong sunlight, blue light and ultraviolet rays, but they are not afraid of red light and tend to move towards weak light. This is why earthworms come out of their burrows on damp mornings. The toxic effect of sunlight on earthworms is mainly due to the ultraviolet rays contained in sunlight. According to a sunlight exposure test, 66% of red Eisenia felis earthworms died after 15 minutes of sunlight exposure, and 100% died after 20 minutes.

Afraid of vibration: Earthworms like a quiet environment, not only requiring low noise, but also no vibration. It is not suitable to build earthworm farms near bridges, roads, and airports. After being vibrated, earthworms will become restless and escape.

Afraid of water immersion: Although earthworms like humid environments, and even many terrestrial earthworms can survive for a long time in an environment completely submerged in water, they never choose to live in flooded soil. If the breeding bed is flooded, most earthworms will escape immediately. Those that cannot escape will show edema and reduced vitality.

Afraid of being stuffy: Earthworms need good ventilation to replenish oxygen and expel carbon dioxide. They are particularly sensitive to ammonia and smoke. When ammonia exceeds 17 parts per million, it will cause the earthworms to secrete more mucus...>>

Question 9: What kind of soil do earthworms usually live in? Living environment of earthworms: They live in burrows in moist, loose soil rich in organic matter. They feed on organic matter in the soil or stems and leaves of plants.

Question 10: Why can earthworms live in the soil? The soil can provide moist conditions so that the earthworms will not die due to skin dehydration.

There is enough air in the soil for earthworms to breathe and there is enough humus in the soil for earthworms to eat.

The soil temperature is relatively constant, ensuring the temperature requirements of earthworms