Is anyone clear about the following types of soils??? 5

Soil can be divided into three types: sandy soil, clayey soil, and loam.

The properties of sandy soil: high sand content, coarse particles, fast water seepage, poor water retention performance, and good aeration performance.

The properties of clayey soil: low sand content, fine particles, slow water seepage, good water retention performance, poor aeration performance.

The nature of loam: general sand content, general particles, general water seepage rate, general water retention performance, general ventilation performance.

Differentiation and assemblage of soil species on the Earth's land surface. It is closely related to the comprehensive change of physical geographical conditions.

Soil is one of the basic elements of land, which is composed of minerals, organic matter, water (soil solution), air (soil air), and organisms including microorganisms.

Understanding and mastering the types of soil and adapting measures to local conditions is of great significance to the development of agriculture, forestry, animal husbandry, sideline and fishery industries. China has a vast territory, complex climate, different topography and landforms, so there are many kinds of soil, which is suitable for the growth of various crops.

The basic ideas of the theory of soil-forming factors can be summarized as follows:

1. Soil is an independent natural body, which is formed under the very complex interaction of various soil-forming factors.

2. For the formation of soil, various soil-forming factors are equally important and irreplaceable. Organisms play a leading role in it. Soil is formed by the action of living organisms on the parent material of soil formation in a certain period of time, under certain climatic and topographical conditions.

Soils are not born with fertility characteristics to grow green plants. Like biological development, soil development has a series of processes. Among them, parent material, climate, biology, topography and time are the five key soil-forming factors for soil formation.

Soil can be divided into three types: sandy soil, clayey soil, and loam.

1. Clayey soil.

Generally speaking, clayey soil has high organic matter content, strong fertilizer retention performance, and nutrients are not easy to lose, but the permeability is poor, the fertilizer effect is released slowly after fertilization, and it is difficult for crops to take root. This kind of soil is cold and the decomposition rate of organic matter is slow, so a fully decomposed farm fertilizer should be applied, and it is best to use hot fertilizer such as horse manure as the base fertilizer.

2. Sandy soil.

The sandy soil texture is loose, coarse-grained, the soil nutrient content is less, and it is advisable to apply more farmhouse fertilizer and commercial organic fertilizer, or return straw to the field, or plant green manure to turn over in a timely manner, so as to fertilize the soil and improve the soil structure year by year. In order to improve sandy soils, soil fertilization can be used, which can not only preserve nutrients, but also improve sandy soils.

3. Loam. Loam soil is a kind of soil with good agronomic properties, its permeability, water and fertilizer retention capacity and potential nutrient content are between sandy soil and clay deficit soil, suitable for the growth of various crops, and can generally be fertilized in a timely and appropriate amount according to the requirements of yield and the growth period of crops.

Functions of the soil:

1. Water circulation function.

The function of soil as a component of nature in the interaction with other environmental factors. Including the water cycle function, that is, the quantity and quality of the soil in the water cycle, water infiltration and retention.

2. Nutrient circulation function.

That is, the ability to supply nutrients to plants in the nutrient cycle.

3. Carbon storage function.

That is, in the carbon cycle, the soil stores organic carbon and inorganic carbon, especially organic carbon.

4. Buffer filtration function.

That is, the buffer filtration function of the soil for heavy metals; Decomposition and transformation function, that is, the decomposition and transformation function of soil to organic pollutants.

5. Animal and plant habitat air control function:

With the aim of protecting rare flora and fauna, we ensure that the soil provides habitat for plants and animals. The function of soils as habitats for plants and animals (or potential habitats for plant and animal communities) plays an important role in protecting and enhancing biodiversity.