If the earthworm disappears, the growth of crops will not be affected

There will be an impact, but due to the current heavy use of chemical fertilizers and pesticides, the number of earthworms in the crop plots is already limited, and the short-term effects are not easy to detect. Earthworms belong to the phylum Oligochaetae, which is one of the animal groups with large biomass in the soil, and plays an irreplaceable role in maintaining the function of soil ecosystem.

There are a few main points.

1. Improve soil structure.

Earthworms improve soil structure through activities such as soil turning, phagocytosis, digestion and excretion, and burrowing, and the crawling marks and fissures left by movement in the soil are very important for the formation of soil aeration, water transport and porosity, thus affecting soil water conduction and soil water and nutrient leakage.

In addition, vermicompost has good porosity, aeration and high water holding capacity, and has high water stability and good aggregate structure, which helps to prevent various forms of soil erosion, reduce crusting, facilitate the free circulation of water and air, and protect and maintain soil organic matter.

2. Decompose soil organic matter and improve the efficiency of soil nutrient transformation.

Earthworms can decompose and break up the coarse organic matter of the soil, so that the organic matter is more easily decomposed by microorganisms and improve the rate of soil nutrient circulation.

After the action of microorganisms, various digestive enzymes and mucus in the intestinal tract of earthworms, the particles become smaller, the specific ratio decreases, and the humidity increases, which is more conducive to degradation and forms soil organic matter. A large amount of nitrogen-containing and carbon-containing mucus secreted by earthworms is highly active and easily degradable organic matter. At the same time, earthworms are also a very active source of organic matter, when the earthworm dies, it quickly decomposes in the soil, and nutrients are quickly released into the soil, which is also an important source of soil organic matter.

In addition, the decomposition of organic matter by earthworms is accompanied by very little self-utilization, and the rest of the excess decomposed organic matter is returned to the soil in the form of soil particle organic matter, vermicompost and other forms. The conversion efficiency is very high.

3. Improve soil available nutrients.

Earthworm activity can improve soil nutrient availability and nutrient turnover rate, and earthworm activity can significantly promote soil nitrogen mineralization and increase soil available nitrogen content.

4. It has a promoting effect on plant growth.

Earthworm activity promotes root growth, plant development and crop yield. In addition to the above-mentioned reasons, earthworms can promote the dispersion of beneficial plant bacteria and can change their colony structure, inhibit the number and activity of plant pests, parasites, and pathogenic bacteria. In addition, it can also promote the uptake of nitrogen by plants.

5. Effects on soil microbial communities.

Earthworms and vermicompost provide a very suitable microecological environment for the growth of microorganisms, microsoil animals, and the elongation and growth of plant roots.

6. Effect on soil enzyme activity.

Vermicompost is high in available nutrients and promotes the growth of microorganisms, which secrete various degrading enzymes. In addition, the good structure of vermicompost provides a suitable space for enzymatic reactions. Vermicompost has the right humidity and pH value, and the intestinal digestion process of earthworms can also promote the improvement of enzyme activity due to the presence of a variety of degrading enzymes in the earthworm intestine.

In addition, earthworms also play an important role in the restoration of contaminated soil.

In summary, there are no earthworms in the soil, and the consequences can be imagined.

The earthworm uses its outer ** to breathe, after the rain the soil is hypoxic, full of stagnant water, it is difficult for the earthworm to breathe oxygen, so in the end it can only go to the land to breathe oxygen.

Are earthworms in the field a blessing or a curse for crops? The other day we were discussing the soil of our earthworm friends in the orchard, and there was a teacher who said a lot of earthworms in his orchard, and he dug on the spot and took pictures of us, which immediately caused a wave of envy, saying that earthworms are harmful to crops, I completely disagree with the first one why we envy the teacher in the orchard There are a lot of earthworms, soil earthworms, indicating that the soil organic matter content is high, and the soil is particularly good, although earthworms are not very pleasing like that, but they can be picked for their own lives, and the degree of soil acidification is low, The soil organic matter content is slightly poor, and so on where they don't go, now let's see, how many earthworms are there in the field? Because our soil is getting worse and worse.

What do earthworms do in soil? They feed on decaying organic matter in the soil, and some say they eat organic matter, which reduces the amount of organic matter in the soil.

It's not like that, they are particularly high in organic matter in excrement, the epidemic point says, they just change from the soil organic matter in their stomachs to finer organic matter that is easier to be absorbed by crops, and now many people want to buy Cordyceps fertilization, but this is really unaffordable, there are too many fakes, and ** is also very high. They say don't stay in the dirt, they will crawl everywhere, keep digging in the dirt, it's like not digging, an earthworm may try not to come out, but when the number of earthworms is more special, you can see the effect, I remember when I was a child in some fields there were a lot of earthworms, and now the soil in the field can not be dug directly.

Earthworms loosen the soil and improve its permeability. Earthworms live in crops, digging for humus and crop residues in the soil day and night, feeding on minerals that are difficult to break down. In this way, a small amount of earthworms in the field can be turned into very loose soil, improving the aeration of the soil and promoting the growth of crop roots.

Earthworms weave and burrow through the soil, passing through the roots of crops to injure fibrous roots, and taproot and lateral roots bypass and burrow. When earthworms burrow in the root system of crops, local fibrous roots are cut off and fed. However, for the entire crop root system, the damage is only a drop in the ocean, the impact is very small, and basically no damage to the crop.

It's still an earthworm, and it won't change again.

Earthworm is a general term for oligochaetes in the phylum Annelids. In the scientific classification, they belong to the order Unidirectional Vermichi. The body is cylindrical, symmetrical on both sides, with a segmentation phenomenon:

It is composed of more than 100 body segments, and after the eleventh segment, each segment has a dorsal hole ** on the back; There are no bones and the body surface is covered with a thin cuticle with pigment. With the exception of the first two segments of the body, the rest of the segments have bristles. Hermaphroditic, allogeneic fertilization, the production of egg cocoons through the ring belt during reproduction, and the reproduction of the next generation.

There are more than 2,500 species of earthworms, which were called the most valuable animals on earth by biologist Charles Darwin in 1837. Earthworms are called Dilong (Kaibian Dilong, Guangdilong) in traditional Chinese medicine, and the "Compendium of Materia Medica" says that it has the functions of activating meridians, activating blood and removing blood stasis, and preventing cardiovascular and cerebrovascular diseases. Earthworms are invertebrates.

Earthworms breathe with moist body walls, breathing oxygen in the air After heavy rain, flooding, rainwater squeezes out the oxygen in the soil crevices, the oxygen in the soil decreases, and the earthworms cannot breathe in the soil, and earthworms burrow out of the ground in order to breathe

Earthworms burrow in the soil, which can loosen the soil and increase the oxygen in the soil, which is conducive to the respiration and growth of the root system. The manure of earthworms is rich in inorganic salts such as nitrogen, phosphorus, and potassium, which can increase soil organic matter and improve the soil structure, and can also promote acidic or alkaline soil to become neutral soil, increase phosphorus and other fast-acting components, and make the soil suitable for the growth of crops Therefore, if the earthworms in the field disappear, the growth of crops will be affected

Therefore, the answer is: after heavy rain, the soil is too wet, the oxygen content is low, and the earthworm has to crawl on the surface to breathe; will be affected; Because earthworms can loosen soil, increase soil fertility and improve soil structure

This problem does not occur under natural conditions. This is because the nutrients in the soil are limited enough to cause the problem of too many earthworms. When the number of earthworms exceeds the carrying capacity of the soil, starvation will cause them to die out and inhibit the increase in numbers.

At the same time, earthworms do not eat unhumified plants, and they cannot bite. Therefore, it does not pose a hazard to plants.

On the contrary, the benefits of earthworms have been introduced upstairs. It is added here that vermicompost is also a good organic fertilizer for plants, which promotes plant growth and can prevent diseases. So there is no need to worry about earthworms depleting nutrients in the soil and affecting the growth of plants.