The composition of the soil, what are the components of the soil

Soil refers to a layer of loose material on the earth's surface, composed of various granular minerals, organic matter, water, air, microorganisms, etc., which can grow plants. Soil is composed of minerals weathered from rocks, organic matter produced by the decomposition of animal and plant and microbial residues, soil organisms (solid substances), water (liquid phase substances), air (gas phase substances), and oxidized humus.

Solid matter includes soil minerals, organic matter and nutrients obtained by microorganisms through light sterilization. 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.

The substances in the soil can be summarized into three parts: the solid part, the liquid part, and the gas part.

Soil minerals are mineral particles of different sizes (sand, soil and gum) formed by the weathering of rocks. There are many types of soil minerals, and the chemical composition is complex, which directly affects the physical and chemical properties of the soil, and is one of the important nutrients of crops.

Solid soil particles composed of minerals and humus are the main body of the soil, accounting for about 50% of the soil volume, and the pores between the solid particles are occupied by gas and water.

The vast majority of soil gas is oxygen and nitrogen entering the atmosphere, and a small part is carbon dioxide and water vapor produced by life activities in the soil. The moisture in the soil enters the soil mainly from the surface and includes many dissolved substances.

Soil is organically composed of four components: solid phase (minerals, organic matter), liquid phase (soil moisture or solution), and gas phase (soil air).

In terms of volume, minerals account for about 38-45%, organic matter accounts for about 5-12%, and pores account for about 50% in the ideal soil. By weight, minerals account for more than 90-95% of the solid part, and organic matter accounts for about 1-10%.

The soil consists of a solid phase, a liquid phase, and a gas phase.

Air is 25 percent, moisture is 25 percent, and solids are 50 percent (humus is 5 percent, minerals are 95 percent).

Detailed enough, huh.

May not be comprehensive enough.

Soil is made up of minerals, organic matter, soil moisture and soil air. Soil is rich in minerals, organic matter, living organisms, water and air. Nitrogen, phosphorus, potassium, iron, tin, aluminum, copper, selenium, sulfur, calcium, carbon, manganese, molybdenum, zinc, and boron can be seen in the detailed analysis.

Soil profile originSpeaking of soil, it is reminiscent of the Loess Plateau in the great northwest.

The majestic mountains and the loess layer hundreds of meters and thousands of meters thick make people dizzy.

The sand and stone used in construction here cost a lot of money to buy, and the common people want a stone to press the vegetable jar, and they have to work hard to get it.

About hundreds of millions of years ago, the earth was littered with bare rocks. Due to the long-term severe cold and heat, as well as the action of dryness, wetness, cold, heat and wind, the thermal expansion and cold contraction.

Wind, water, sand and gravel.

Under the friction, the rock cracks collapse, and the whole rock gradually breaks apart, a process called weathering.

There are four main components of soil:

1. Inorganic matter, such as small granular rocks and clay;

2. Organic matter, such as the decay of the corpses of plants and animals, also known as humus;

3. Air; 4. Water.

Soil is a mixture of minerals, organic matter, and living organisms, as well as moisture and air, among other things. By weight, minerals account for 90 95% or more of the solid fraction (soil dry weight), and organic matter accounts for about 1 10%, indicating that the soil composition is dominated by minerals. Soil organic matter is the organic compounds that exist in various forms in the soil.

In addition to this, there is also soil solution, which is a general term for soil moisture and the dissolved and suspended matter it contains. Soil solutions are the medium through which plants and microorganisms absorb nutrients from the soil and are the main route for the migration of pollutants in the soil.

Minerals, organic matter, gases, moisture.

You tell me your email address. I can send you a ppt of the section on the material composition and structure of soil, the structure and the physical properties of soil in the geology that I have studied.

There are more to less arranged as oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, and hydrogen.

The main components of soil include minerals, organic matter, soil moisture, and soil air. Minerals make up a large proportion of the soil, mainly various silicates.

Its specific composition varies depending on the nature of the rock formations in which the soil is formed. The most important of organic matter is humus.

It is a complex nitrogenous compound formed by plant residues under the action of microorganisms. The size of soil particles varies, including sand, silt, mud, and gum.

The functional role of the soil

1. Adjustment function

The function of soil as a component of nature in the interaction with other environmental factors. Hydrological cycle.

Function; nutrient cycling function; carbon storage function; buffer filtering function; Break down the conversion function.

2. Animal and plant habitat functions

With the aim of protecting rare flora and fauna, we ensure that the soil provides habitat for plants and animals.

3. Crop production function

Soil can fix plant roots, has natural fertility, and can promote crop growth for agricultural production. This is one of the earliest recognized functions of soil, including agriculture, forestry production, and food crops.

and cash crop production.

4. Functions of human settlements

As an environment for human life and habitation, soil provides buildings, leisure and entertainment places.

Maintain the function of healthy human development. Healthy soil plays an important role in improving the quality of the urban environment.

5. The function of natural and cultural historical archives

Soil has the function of recording natural changes and human history as a historical archive.

There are minerals, organic matter, soil moisture, and soil air in the soil.

There are four main components of soil:

1. Inorganic matter, such as small granular rocks and clay;

2. Organic matter, such as the decay of the corpses of plants and animals, also known as humus;

3. Air; 4. Water.