What and what kind of environment does the moist soil create for earthworms?

1. The wet soil of earthworm life is for the moistening of the body surface and smooth breathing.

Because it does not have special respiratory organs, it mainly exchanges oxygen and carbon dioxide through the moist epidermis. Earthworms need good ventilation to replenish oxygen and expel carbon dioxide. It is particularly sensitive to ammonia, flue gas, etc.

2. Earthworms live in wet soil to avoid friction in movement.

Earthworms belong to annelids, without feet, and their movement almost completely depends on the contraction of each link of the body, as well as the static friction between the bristles on the links and the soil, in order to overcome the damage of coarse sand particles to the tender **.

3. The wet soil of earthworm life is the wetness of the body surface.

Earthworms are covered with sticky and slippery fluids, but as soon as the sun shines on them, their bodies become dry, and their walls are prone to breakdown, and they eventually die.

4. Moist soil, especially fertile gardens, vegetable gardens, cultivated land, sewer edges, and garbage heaps, provide abundant food for earthworms. If the soil is relatively dry, it will deplete the earthworm body fluid, making it inedible.

2.To keep the body moist.

One is because earthworms are afraid of light, and the other is to keep the body moist, because it dies when it is dehydrated.

Earthworms are trichopod oligochaetes and generally live in moist, loose, organic-rich soils at depths of 10-30 cm in dark, damp soils. In particular, fertile gardens, vegetable gardens, cultivated fields, ditches, rivers, ponds, canals, sewers, garbage heaps, and water tanks near the cafeteria. The wetness of the body surface is also closely related to the respiration of the earthworm, because it does not have a special respiratory organ, and mainly exchanges oxygen and carbon dioxide through the moist epidermis.

Earthworms need good ventilation to replenish oxygen and expel carbon dioxide. It is particularly sensitive to ammonia, flue gas, etc. When ammonia exceeds 17 parts per million, it will cause an increase in earthworm mucus secretion and the death of clusters.

Although a damp place is the best living environment for earthworms, when it rains, it is obvious that the soil surface is more compacted than on a sunny day due to the infiltration of surface water, and the soil breathability suddenly decreases, so they need to crawl out to breathe.

The purpose of the moist mouth is to create two environments for the earthworm. It is to create a moist environment for earthworms. Earthworms are moist animals.

Earthworms rely on the oxygen diffused into the soil by the atmosphere for respiration, and the better the soil aeration, the more vigorous its metabolism is, not only producing more vermicoons, but also shortening the maturity period.

Earthworms use ** to breathe, so the earthworm body must be kept moist, the body water of the earthworm accounts for more than 75% of the body weight, and preventing water loss is the key to the survival of the earthworm.

So it should be to create a loose and humid environment.

With water and oxygen, earthworms cannot survive if they are too dry.

1. The movement and excrement of earthworms are very beneficial to improving the quality of the soil, which can keep the soil permeable well and keep the soil in a healthy state, which plays an important role in agriculture. A healthy earthworm can turn over 20 to 40 tons of soil in an acre every year.

2. Earthworms can loosen the soil, increase soil organic matter and improve the structure, and can also promote acidic or alkaline soil to become neutral soil, increase phosphorus and other available components, and make the soil suitable for the growth of crops. Because earthworms are rich in protein, they can be used as feed for livestock, poultry and aquaculture to increase yields. Earthworm also occupies a certain position in pharmacology, is a common Chinese medicinal material, has antipyretic, antispasmodic, activating, asthmatic, antihypertensive and diuretic effects.

3. Earthworms can secrete a special enzyme that can decompose proteins, fats and wood fibers, so leaves, straw, livestock and poultry manure, domestic garbage, activated sludge and papermaking, and scraps of the food industry can be its food. Earthworms are able to eliminate environmental pollution to a certain extent. As a result, many countries have set up earthworm farming factories and refer to them as "environmental purification devices".

Because earthworms are able to absorb trace metals such as mercury, lead and cadmium in the soil, the amount of these metals in the earthworm is 10 times higher than the external content. As a result, some scientists believe that earthworms can be used as monitoring animals for heavy metal contamination in soil.

Earthworms are ectotherms, and their body temperature changes with the change in the temperature of the outside environment. Therefore, the dependence of earthworms on the environment is generally more significant than that of homeothermic animals, and the ambient temperature not only affects the body temperature and activity of earthworms, but also affects the metabolism, growth and development and reproduction of earthworms, and the temperature also has a greater impact on other living conditions, thus indirectly affecting earthworms. Therefore, temperature is one of the most important living conditions for earthworms.

Earthworms prefer dark, damp environments. The reason is that earthworms breathe through **, and at the same time require a moist environment, which can cause suffocation once it is in a dry environment for a long time.

Earthworms are rich in nutrition, rapid reproduction, miscellaneous diets, and high yield in artificial breeding. Good economic benefits. Earthworms can be used as a valuable medicine** for many diseases, and can also be used as high-protein food and feed.

Earthworms dig holes to loosen the soil, decompose organic matter, create good conditions for the growth and reproduction of soil microorganisms, and play a special role in soil improvement, elimination of pollution, protection of the ecological environment, material cycle, biodiversity, etc.

<> earthworm prefers to be in moist soil because it needs to keep its body moist and easy to breathe. Earthworms do not have a respiratory system, mainly through the body wall to exchange oxygen and carbon dioxide, the oxygen in the air can be dissolved in the mucus on the surface of the earthworm's body, and then infiltrate into the body wall, and then enter the capillaries of the body wall, and the carbon dioxide in the body is also discharged from the body surface through the capillaries of the body wall.

Just think about it according to the principle.

The material is nothing more than two soils of the same environment, and the conjecture says that they like a humid environment.

The conditions to change are one to dry a little, a condition to add some water regularly to keep it moist and unchanged, that is, other conditions such as temperature, light and so on are the same, the control method is the one that is humidified, the control group is the one that is dry, the one that is humidified, the one that lives normally, the one that dries the earthworm dies or something.

The conclusion is that it needs to be in a humid environment.

Material and function: earthworm, soil (earthworm's living environment), waterMy guess: prefers humid environments.

Conditions to change: The wetness of the soil

Conditions that do not change: external environmental factors such as light and temperature

Method of control: Experimental group: Wetter soil is provided

Control group: Dry soil Conclusion: Prefer humid environment.

This is an experimental problem, you can take 1 point of dry soil, stir well and set aside. Take 10 earthworms for later use.

Material and function: A flower pot filled with soil I guess: earthworms like a moist living environment to change the conditions: water a small amount of water on one side of the pot.

Do not change the condition: the other side remains dry.

Control method: Experimental group: put 5 earthworms on top of moist soil Control group: put 5 earthworms on dry soil.

Conclusion: The five earthworms on the wet soil all burrowed into the soil, and the five earthworms on the dry soil did not drill into the soil, indicating that the earthworms like a humid living environment.

Design of Experiments?

Material and function: a square box, a pile of damp soil and dry soil, a piece of cardboard My guess: earthworms like a humid environment.

Conditions to change: humidity, light.

Conditions that do not change: soil temperature.

Method of control: square the box half of the damp dirt, half of the dry soil. Place the cardboard in a place that is half damp and half dry, and let the other half (sunlight or light) shine.

Form four different environments in the shape of a field, put a few earthworms in the center of the box, wait for an hour, and watch the earthworms crawl towards that piece.

Experimental group: Dark, damp soil.

Control group: 1The light is dark and the earth is dry. 2.The light is bright and the earth is damp. 3.The light is bright and the earth is dry.

Conclusion: Earthworms prefer dark and damp environments.

If you don't need light, you don't need cardboard, and there are two fewer groups in the control group.

Earthworms prefer dark, damp environments.

1. Earthworms exchange gas on the body surface. Oxygen dissolves in the moist membrane on the surface of the body, then penetrates into the corneal membrane and epithelium, reaches the microvascular plexus, and is transported to all parts of the body by the hemoglobin in the plasma combined with oxygen. The epithelium of earthworms secretes mucus, and the dorsal pores drain body cavity fluid, which often keeps the body surface moist and facilitates respiration.

It has been suggested that earthworms can also breathe in water or perform panoxygen.

2. Earthworms generally remain on the surface of the soil, but can burrow to a depth of 2 meters (7 feet) in dry climates or in winter. There is an Asian species that can climb trees after heavy rains to prevent drowning. Earthworms feed a variety of birds and animals, and indirectly provide food for humans, loosening the soil for aeration and drainage, dragging organic matter into the burrows to accelerate decomposition, thereby increasing the nutrients needed for plant growth.

Earthworms can also be used as bait, so they are commonly known as fishing insects.

3. Earthworms feed on animal and plant detritus in the soil, and often drill holes in the ground to turn the soil loose, so that water and fertilizer are easy to enter and improve the fertility of the soil, which is conducive to the growth of plants.

4. Earthworms are decomposers, for humans, it can decompose the organic waste produced by humans, and it is turned into inorganic matter for plants and other uses. Therefore, if there are earthworms in the yard, it will grow better when you grow vegetables or flowers......At the same time, human activity will provide earthworms with a certain amount of energy**, such as food. However, human pollution of soil and water will cause great harm to the living environment of earthworms and threaten the lives of earthworms.