Is soil a living thing Soil microorganisms of soil organisms

Soil is abiotic, but there are many microorganisms and bacteria in it!

No, there are no animate functions and phenomena.

Fungi exist in a large and diverse variety of species. The role of only a few of these fungi is understood, and the rest is almost unclear.

Actinomycetes. It has the ability to decompose organic matter such as mold. Most of them belong to the bacteria that produce anti-biomass, and have the effect of inhibiting pathogenic bacteria.

Filamentous fungi.

That is, there are more than 100,000 types of mold. A very small number of filamentous fungi are known to be pathogenic bacteria that cause disease in vegetables.

Algae In addition to water, there are many species of algae that are also present in the soil. Some algae absorb nitrogen from the air.

Earthworms can eat humus-containing soil and excrete it, and are the helpers of cultivating soil to promote soil agglomeration.

Ticks and mites are soil animals smaller than 1 mm. The soil is home to many predatory and parasitic ticks.

Protozoa are single-celled protozoa that move to prey on and decompose organic matter, and are partners of paramecium, euglena algae, etc.

Nematodes are tiny soil animals smaller than a few millimeters. There are many species, and only a small part of them are parasitic on the roots of vegetables.

The small herbivorous soil animal of the beetle mite is also the most abundant soil animal in the soil. Survive by breaking down fallen leaves.

Jumping insects are soil animals smaller than a few millimeters, and decompose molds and algae for survival. Known as the "plankton of the earth", it plays an important role in the material cycle.

The abiotic in the soil includes soil-forming parent material, inorganic salts, and water. Soil-forming parent material, also known as soil parent material, is a loose debris formed by the weathering of surface rocks to break rocks, and is the basic original material for forming soil. Inorganic salts are salts in inorganic compounds, among which a large number of elements include calcium, phosphorus, potassium, etc.

Water is one of the most common substances on the earth, and it is an important resource for the survival of all life, including inorganic compounds. <

The abiotic in the soil includes the old soil mass, inorganic salt, and water.

1. The soil parent material is also known as the soil parent material, Lu Hanzheng is the loose debris formed by the weathering of the surface rock, and the loose weathering formed by the change of physical properties is the basic original material for the formation of soil, and is the material basis for soil formation and the initial element of plant mineral nutrients.

2. Inorganic salts are salts in inorganic compounds, which generally only account for 1% of the fresh weight in biological cells, among which a large number of elements include calcium Ca, phosphorus P, potassium K, sulfur S, sodium Na, chlorine Cl, magnesium MG, trace elements such as iron Fe, zinc Zn, selenium SE, molybdenum Mo, fluorine F, chromium Cr, cobalt Co, iodine I, etc.

3. Water is one of the most common substances on the earth, an important resource for the survival of all life, including inorganic chemistry and human beings, and the most important component of living organisms, which plays an important role in the evolution of life. It is a narrowly non-renewable, broadly defined renewable resource.

1. Form the soil structure.

The flora composition, biomass and life activities of microorganisms are closely related to the formation and development of soils. In soil, microorganisms exchange oxygen with carbon dioxide through metabolic activities and secrete organic acids that help soil particles form large aggregate structures and form a true sense of soil.

2. Decompose organic matter.

This is where the effect of microorganisms on the soil is more significant. Microorganisms have a decomposition effect, and microorganisms such as stump roots, rotten roots, and fallen leaves of crops can make them decay and decompose, and then convert them into nutrients to supply to crops. and the formation of humus in these processes, which improves the structure of the soil.

At the same time, the metabolites of microorganisms can also decompose minerals, and produce phosphorus, potassium and other elements for crops to absorb and utilize.

3. Nitrogen fixation.

Some microorganisms can provide "nitrogen fertilizer" to crops by converting nitrogen in the air. It's like when a person is in a plateau and has a hypoxic reaction, we use an oxygen cylinder to provide oxygen. Without oxygen cylinders, it is difficult for us to breathe enough oxygen to relieve the symptoms of hypoxia; Similarly, if there are no microorganisms, the nitrogen in the air will be wasted.

4. Remediation of diseases.

Some diseases are caused by pathogenic bacteria and microorganisms, and we can use microorganisms that produce counterparts with them to prevent and control. Not only is it green, but the effect is also more outstanding. The problem lies in the first, and it is undoubtedly a better solution to solve it with the corresponding method.

In other words, it is understood: use a slaughtering knife to kill chickens? Of course, it is more convenient to use a chicken killing knife.

5. Pest control.

In nature, there are many microorganisms that have pathogenic effects on pests, and using this pathogenicity to control pests is an effective biological control method. Research on the use of microorganisms to control pests began in the 19th century, and gradually entered the stage of development and application in the first half of the 20th century. The rapid development of fungi and bacterial insecticides, at present, the most used bacteria are Bacillus thuringiensis, fungi mainly include Metaverium aeruginosa, Beauveria bassiana and so on.

6. Residue of degrading harmful substances.

Perennial soil will inevitably accumulate residual pesticides and even all kinds of garbage, which is harmful to the growth of crops. The microbiota can break down these harmful substances and make them less harmful or even harmless.

In terms of physical action:

1. It can prevent soil erosion. The plant's well-developed root system is able to hold the soil firmly in place and prevent it from being lost with water.

2. Prevent soil desert words. Surface plants are able to store water and protect the soil from wind.

3. Increase oxygen content. Certain organisms in the soil, such as earthworms and sulfidating bacteria, can improve the oxygen content of the soil, which is beneficial for plant growth.

In terms of chemical action:

Animal and plant metabolites, carcasses, etc., can increase the organic matter content in the soil and increase soil nutrients.

Soil is made up of three types of substances: solids, liquids, and gases.

Solid matter includes soil minerals, organic matter, and microorganisms.

Liquid matter mainly refers to soil moisture. Gases are the air present in the pores of the soil. These three types of substances in the soil constitute a contradictory unity. They are interconnected, mutually restrictive, provide the necessary living conditions for crops, and are the material basis of soil fertility.