Why do earthworms burrow out of the ground on rainy days 50

Earthworms exchange gases on the surface of their bodies. Oxygen dissolves in the moist membrane on the surface of the body, and then penetrates into the corneum membrane and epithelium, and is transported to all parts of the body. There is enough oxygen in the soil pores to maintain the earthworm's respiration, and on rainy days, rainwater seeps into the soil pores, and the oxygen content in the soil decreases, and the earthworms do not have enough oxygen to maintain their basic survival, so when it rains, the earthworms will crawl to the ground.

Earthworms are ectotherms.

Body temperature changes with the change in the temperature of the outside environment. Therefore, earthworms are generally more dependent on the environment than homeothermic animals.

More significantly, the ambient temperature not only affects the body temperature and activity of earthworms, but also affects the metabolism, growth and reproduction of earthworms, and the temperature also has a greater impact on other living conditions, thus indirectly affecting earthworms.

Earthworms feed on animal and plant detritus in the soil, and often burrow in the ground to loosen the soil, so that water and fertilizer can easily enter and improve the fertility of the soil, which is conducive to the growth of plants. Earthworms can be used as feed for poultry and are the preferred "meat" food of chickens and ducks; Earthworms are also widely adapted to freshwater fishing, and are suitable bait for various waters, fish, and climate.

At present, people are increasingly aware of the importance of earthworms in agriculture, forestry and animal husbandry production and their special role in environmental protection. According to surveys, there are about 151.8 million earthworms per hectare of land in China. Due to the diggering and omnivorous nature of earthworms, the earthworms excreted vermicompost per hectare of land can reach tens to hundreds of tons per year.

Rich in humus.

Vermicompost is an excellent fertilizer for plant growth. The activities of earthworms can also improve the soil, accelerate the decomposition of organic matter in the soil, and restore and maintain the ecological balance of the soil.

In addition, earthworms have attracted increasing attention in the treatment of organic waste in garbage, degradation of pollutants in the environment and provision of new protein for classification.

After the rain, the voids in the soil are filled with water, and the earthworms need to go to the ground to breathe air, and the environment is moist after the rain, and the earthworms will not lose their mobility due to dehydration, so the surface activities will be more active. Earthworms play a special role in material recycling, biodiversity, etc., and many countries use earthworms to treat household waste, organic waste and purify sewage.

Earthworms will burrow out of the ground after rain, and some will break through the ground before the rain, the key is that the air pressure is too low, and the earthworms also need to breathe.

Because of the large amount of rain that enters the soil, the oxygen content of the soil decreases. Earthworms need to get out there to get some fresh air.

On rainy days, rainwater seeps into the pores of the soil, the oxygen content in the soil decreases, and the earthworms do not have enough oxygen to maintain basic survival, so when it rains, the earthworms will crawl to the ground.

Hello, earthworms will burrow out of the ground on rainy days, probably because the ground is too wet.

Because of the rain, the earthworms cannot breathe in the water, so the earthworms have to burrow out of the ground to breathe.

Because the ground is too wet on rainy days, earthworms are afraid that water will not be able to absorb air, so earthworms will only burrow out of the ground on rainy days.

The earthworm has a respiratory function, there are many voids in the soil, usually there is water adsorbed around the soil, the void is filled with air, after heavy rain, the void in the soil is filled with water, and the air is squeezed out to reduce the amount of dissolved oxygen in the soil, so the earthworm has difficulty breathing, and they have come out of the hole.

Because the ground is wet on rainy days, there is a lot of water, and there is not enough oxygen, so earthworms drill out of the ground to breathe.

Earthworms do not have a specialized respiratory system, they rely on respiration, secrete mucus, and subcutaneous capillaries can exchange gas with oxygen dissolved in mucus. Therefore, the earthworm must be kept moist.

After rain, the voids in the soil are occupied by rainwater, and the oxygen content is reduced, which is not conducive to the earthworm's respiration, so it has to crawl out of the soil and go to the surface to breathe.

If the earthworm does not crawl back to the soil in time after the rain and the weather is clear, it will quickly suffocate and die after being dried by the sun.

On rainy days, the soil will be wet, so you may feel uncomfortable, so you will install the dirt floor.

Sometimes they are washed out by water, mainly because their nests are affected to a certain extent, so earthworms can often be seen on rainy days.

Earthworms do not have lungs and rely on ** to breathe. Usually the soil is loose and soft, there are gaps between the particles, and the earthworms exchange gases on the surface of the body. Oxygen dissolves in a moist film on the surface of the body.

On rainy days, the rain falls on the grass and moistens the plants and soil. But this is a huge disaster for the earthworms. The erosion of rain makes its living environment too wet, and the oxygen in the soil is washed away by the rain, and the earthworms cannot live in the soil.

Because they couldn't breathe, they all came out.

Earthworms generally live in caves, but after the summer rain, earthworms will crawl onto the ground to move, so? I have compiled the reasons why earthworms crawl out of the ground after the rain here for your reference, and I hope you will gain something in the process of reading!

The reason why earthworms crawl out of the ground after a rain.

When it rains, the voids in the soil are filled with water, and the earthworms need to go to the ground to breathe air.

In addition, the environment is moist after rain, and earthworms will not lose their mobility due to dehydration, so surface activities are more active.

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 are food for a variety of birds and animals, and indirectly provide food for humans, loosening the soil to facilitate aeration and drainage, dragging organic matter into the dug 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.

Natural terrestrial earthworms generally prefer to live in wet, loose and organic-rich soil, especially in fertile gardens, vegetable gardens, cultivated fields, ditches, rivers, ponds, canals, and sewers, garbage heaps, and water tanks near canteens.

Generally speaking, the activity temperature of earthworms is in the range of 5-30, 0-5 enters the dormant state, and dies below 0, and the most suitable temperature is about 20-27, which can grow and reproduce well at this time. At 28-30, it can maintain a certain growth; Growth stops above 32; sluggishness under 10; Death when above 40, worm cocoon hatching is the most suitable 18-27. It can be seen that the maximum lethal temperature of earthworms is lower than that of other invertebrates.

The farm is best indoors, in the southern region, ventilation in summer, as long as the window is closed and insulated in winter, it can be produced normally throughout the year. When the air temperature is 38, the base temperature is only about 28, because the manure contains extremely high moisture***

How earthworms are collected.

1. Irrigation and capture method. Earthworms are afraid of stagnant water, so they can be caught when they come out of their burrows by irrigation methods, and they can also be caught in paddy fields during spring ploughing.

2. Stockpile trapping method. The feed that has been fermented and cooked is stacked in the place where earthworms are to be lured, such as the edge of the field and the vegetable garden, the height is 30-40 cm, the width is 40-50 cm, and the length is not limited. If 50% soil is mixed with fermentation as feed, the trapping effect is better.

3. Excavation method. Dig the soil with a ploughing nail rake to catch the call, the method is simple, but the effect is poor, and this method is suitable for small-scale breeding.

4. Chemical capture method. Sprinkle 7 l m2 of 15% potassium permanganate solution or formaldehyde solution on the place where the earthworms are collected, and the earthworms will quickly climb to the ground, which is very convenient for collection.

Because earthworms rely on ** to breathe, the oxygen in the soil crevices usually dissolves in the mucus on the surface of the earthworm**. After heavy rain, the rainwater fills the cracks in the soil, and the earthworms cannot breathe and have to burrow out of the ground. In sunny and dry weather, earthworms do not dare to come out, and once the mucus on the surface of the ** evaporates in the dry air, the earthworms will suffocate to death.

Because earthworms rely on ** to breathe, the oxygen in the soil crevices usually dissolves in the mucus on the surface of the earthworm**. After heavy rain, the rainwater fills the cracks in the soil, and the earthworms cannot breathe and have to burrow out of the ground. In sunny and dry weather, earthworms do not dare to come out, and once the mucus on the surface of the ** evaporates in the dry air, the earthworms will suffocate to death.