Solid matter in the soil, which is composed of three substances: solid, liquid, and gas

Wrong, right, wrong, wrong, I've been thinking about it for a long time.

Soil is made up of three substances: solid, liquid and gas: yes.

Soil is composed of solid, liquid, and gaseous three-phase substances. The solid phase part is mainly primary and secondary minerals, organic matter and dry macroorganic matter. The liquid phase part is mainly soil water and its dissolved matter, which is actually a soil filling solution; The gas phase part is mainly O2 and N2 entering the atmosphere and CO2 and water vapor produced by soil. In terms of volume, the solid phase part accounts for about 50, and the air and water leakage account for about 25 each

Generally speaking, the higher the soil fertility and the more harmonious the relationship between water, fertilizer, air and heat, the greater the potential for yield increase.

The soil fertility factors related to fertilization are mainly soil nutrients, soil texture, soil acidity and alkalinity, soil organic matter and soil microorganisms. In particular, nutrient fertility levels such as soil organic matter and soil available nutrient content are the main items of soil testing. For a certain yield target, the higher the soil fertility, the lower the amount of fertilizer. Vice versa.

What is Soil Texture? What does it have to do with soil fertility?

A: Soil is made up of particles of different sizes. Soil texture is the type of soil that is divided according to the quality composition of soil particles at all levels, that is, the coarseness of the soil.

The proportion of sand particles is sand, the proportion of clay particles is large, and the proportion of sand and clay particles is called loam or double soil.

The types of abiotic matter in the soil include soil-forming parent materials (such as silica, calcium carbonate), inorganic salts, and water. 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.

It is composed of soil mineral particles, soil organic matter, and soil microorganisms.

1. The mineral color of the soil is the mineral particles of different sizes formed by the rock through weathering and prudent use, and there are many types of soil minerals with complex chemical composition.

2. The content of organic matter is an important indicator to measure the level of soil fertility.

3. There are many types of soil microorganisms, including bacteria, fungi, actinomycetes, algae and protozoa.

4. The soil is a loose porous body, which is covered with large and small honeycomb-like pores. The water in the pores of the soil capillary can be directly absorbed and utilized by the crop, while also dissolving and transporting soil moisture.

Soil is a mixture of sand, pebbles, clay, humus, water, and air.

Soil is the most valuable resource on earth. In every cubic meter of soil, billions of organisms live. The soil provides them with food and living space, and also provides food, clothing, shelter and transportation materials for human beings.

And the remains and excreta of all organisms that live in the soil can make the humus of the soil richer. The roots of animals and plants loosen the soil and create space for air and water.

The soil mineral material is the main substance of the soil solid phase, and the mountain and land have become the "skeleton" of the soil

a.Correct judgment of purity.

b.Mistake. Correct Answer: a