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What soil do earthworms like?

Question 1: What soil do earthworms usually live in? Earthworms' living environment: burrowing, living in wet, loose and organic-rich soil. Feed on organic matter in soil or plant stems and leaves.

Question 2: What kind of soil do earthworms generally live in, what kind of environment do they like and do they like snails? Earthworms generally live in (wet), (soft) and other soils, and like snails, they like (wet) and (dark) environments.

Question 3: What are the benefits of earthworms to the soil? Earthworms can improve soil.

Earthworms are a very old animal. For millions of years, they have lived in the soil in obscurity and cultivated endlessly, increasing the nutrients of the land and making green plants flourish.

People say that earthworms are "heroes" in improving soil, which is absolutely true. Earthworms dig the soil to loosen it, so that air and water can easily reach the roots of plants. Earthworms dig caves and passages to help the soil drain quickly. Dr. Olivier of the United States estimated that if there are 1 10,000 earthworms living on 15 mu of land, it can completely replace three skilled gardeners to work 8 hours a day in turn all year round and get 1.8 tons of earthworm dung every year. Over the years, farmers in some countries have implemented the "no-tillage method", and they have replaced mechanical farming with the method of increasing earthworm population in the soil in large quantities, which not only saves manpower and material resources, but also improves the soil.

The contribution of earthworms to plant growth is enormous. Earthworms live vertically in the soil and eat upside down. They can swallow organic matter equivalent to their own weight every day, and about half of them are discharged as feces. According to the detection of earthworm dung by the Fertilizer Quality Inspection Center of the Ministry of Agriculture, the contents of nitrogen, phosphorus and potassium in earthworm dung are 1.4%, 1% and 1% respectively, and it contains 46% humic acid, 23 amino acids and abundant earthworm protease. There are 105×8 beneficial microorganisms per gram of earthworm manure (only 65,438 in mature soil). The earthworm manure with water content of 85% is exposed to the sun in hot summer 15 days, and the water content at the depth of 20 cm still reaches 45%, which greatly enhances the drought resistance of soil. Earthworm enzyme in earthworm manure can also kill viruses, harmful bacteria and substances that inhibit plant growth in soil. Earthworm manure is an ideal natural biological fertilizer.

In addition, earthworms can degrade and disperse pollutants in soil. Soil pollution is caused by sewage irrigation, the settlement of polluted dust and the abuse of pesticides and fertilizers. Earthworms can absorb and decompose pollutants in their habitats, such as organic pesticides, heavy metals and radioactive substances. Some foreign factories have built tall air purification towers for earthworm dung, which can detoxify and deodorize toxic gases and malodorous gases. In the United States, we are studying the use of earthworms to purify urban sewage, turn it into clean water and return it to rivers.

Because earthworms have such great potential in improving soil, many earthworm breeding companies have been established in big cities such as Tianjin, Shanghai and Guangzhou. With the growth of the world population, many soil problems have to be solved by earthworms, and earthworm breeding will also become a new industry.

Question 4: What kind of soil do earthworms like to live in? Earthworms are a common animal, belonging to annelids among invertebrates. Earthworms live in soil. It eats rotten organic matter in the soil, and sometimes it drills out of the soil and eats rotten leaves on the ground. The excrement discharged by earthworms is rich in mineral elements such as nitrogen, phosphorus, potassium and magnesium, and trace elements such as copper, boron and manganese, which are not only good nutrients for crops, but also greatly increase soil fertility. In addition, earthworms can break the soil in the soil, change the structure and aeration of the soil, turn the deep soil to the surface, and bring the surface soil and its organic matter into the lower soil, thus promoting the activities of soil microorganisms and accelerating the decomposition of organic matter, which is conducive to soil improvement. Earthworms are very active in soil. They drill holes everywhere in the soil to loosen and compact the soil and improve the soil structure, which is beneficial to the growth and development of plant roots. So earthworms are beneficial to the growth of plants, not harmful.

Question 5: What environment do earthworms like? 1. Hi Dark:

Earthworms are nocturnal animals. They live in mud caves during the day and go out at night. Usually go out at 8 pm in summer and autumn until about 4 am the next day. Their feeding and mating are carried out in the dark.

2. For example, humidity:

Natural terrestrial earthworms generally like to live in moist, loose and organic soil, especially under fertile gardens, vegetable gardens, cultivated land, ditches, rivers, ponds, ditches, sewers, garbage dumps and water tanks near canteens.

3. Hello, Jing:

Earthworms like quiet environment. Earthworms around industrial and mining areas often grow poorly or escape.

4. Like warmth:

Although earthworms are distributed all over the world, they like higher temperatures. When the temperature is lower than 8℃, the growth and development will stop. The optimum temperature for breeding is 22-26℃.

5. Love is sweet and sour:

Earthworms are omnivores. They eat humus, animal manure, soil bacteria, fungi and their decomposition products except glass, plastic and rubber. Earthworms have a keen taste and like sweets and sour taste. Hate bitterness. I like hot and soft feed, and I am especially greedy for animal food. I eat as much as my weight every day. About half of the food passes through the digestive tract and is discharged in the form of feces.

Question 6: What kind of soil does earthworm like? Why do red earthworms like to eat rotten leaves, so they prefer fertile black soil (fertile soil without pollution will grow very big). Black earthworms are relatively more adaptable to poor soil. As long as it is not too dry, it is difficult for black earthworms to attract fish when fishing, and red earthworms will prefer it.

Question 7: What kind of soil do earthworms like to live in? Why loam? Earthworms feed on humus in the soil, including feces. Loam is rich in humus and has good water permeability and air permeability.

Question 8: What kind of soil do earthworms like to live in? Why do you wet the soft soil, such as the circles around the roots? Because wet soil is good for his body to absorb water and it is convenient to drill around, right ~

Question 9: What kind of environment do earthworms like to live in?

Teaching objectives

Scientific concept: Animals need certain environmental conditions.

Process and Method: Master the method of comparative experiment.

Emotion, attitude and values: Understand that natural things are interrelated.

Teaching focuses on designing comparative experiments.

The difficulty in teaching lies in strictly controlling variables, paying attention to collecting experimental data and speaking with facts when designing comparative experiments.

One for each group: two rectangular flat cartons, black cloth, plastic film, glass sheet, earthworm 15, dry soil and wet soil.

teaching process

First, dialogue import:

Earthworms are familiar small animals. Where do we usually see them? What environment do you think earthworms like?

2. Students can publish freely. According to students' past experience, they guess that earthworms may like wet and dark environment. On this basis, guide students to design experiments to verify their guesses. )

Experiment 1: Do earthworms like dark or bright environment?

1, let's first study whether earthworms like dark or bright environment. How to design the experiment?

2. Students talk about their own ideas and guide them to design this comparative experiment. (Instruct students to pay attention to control conditions. What are the variable conditions of this comparative experiment? What are the quantitative conditions? Students determine that "the variables are light and dark environment, which are quantified as the number of earthworms, environmental humidity, etc." .

3. Show the experimental equipment.

4, discuss the experimental steps:

(1) Cut off a part of one end of the rectangular box, cover it with a glass sheet, and then wrap it with a black cloth at the other end.

(2) Put a plastic film on the bottom of the box to protect the earthworm and facilitate its crawling.

(3) Put five earthworms in the middle of the box and cover it.

(4) After 5 minutes, open the lid, observe and record.

(5) Repeat for 2 times.

4. Distribute record sheets and relevant experimental materials, conduct experiments for students, and give itinerant guidance to teachers.

5. Take back the materials and organize exchanges. To sum up, earthworms like the dark environment.

Third, experiment 2: Do earthworms like dry or humid environment?

1, transition: So, do earthworms prefer dry or wet environments? Let's also design a comparative experiment.

2. Students design experiments and publish them freely.

3. Teachers present materials at will and summarize reasonable experimental steps in communication:

(1) Spread the same soil on both ends of another box, except that it is wet while dry.

(2) Put 10 earthworm in the middle of the box and cover it.

(3) After 5 minutes, open the lid to observe and record.

(4) Repeat for 2 times.

4. Distribute record sheets and relevant experimental materials, conduct experiments for students, and give itinerant guidance to teachers.

5. Take back the materials and organize exchanges. In a word, earthworms like wet environment.

Fourth, the needs and adaptation of animals to the environment:

1, let the students sum up: What kind of living environment is earthworm suitable for?

2. Transition: Like earthworms, all kinds of animals like to live in a certain environment.

3. Students read the pictures on the surface of 1 1 and talk about how these animals adapt to the environment.

4. Expansion: When the environment does not adapt to the survival of animals, they will choose the appropriate environment to live, otherwise it will be difficult to survive. Can someone tell me some relevant examples? Through this expansion activity, students are not limited to classroom knowledge, and have deepened their understanding that "different animals live in different environments, and all kinds of animals should have their own suitable living environment". Understand. )