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All of them are various minerals, the most common is oxygen, followed by silicon.
Again for aluminum, again for iron...
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There is sand clay, and the residual value of air and water is to.
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There are three types of soil: sandy soil, clay soil, and loam soil.
1. Sandy soil.
Coarse-grained soil refers to the soil with a large particle content of more than millimeters, which can be divided into gravel soil and sand soil.
Sandy soil, also known as sandy soil, refers to soil with a particle size greater than 2mm and a particle content of more than 50% of the total weight, and a particle size greater than 50% of the total weight. Sandy soil can be divided into gravel sand, coarse sand, medium sand, fine sand and silt according to the different particle content.
2. Clayey soil.
Clay soil is a kind of soil, which has the characteristics of good water retention performance, less sand content, fine particles, slow water seepage rate, good water retention performance, and poor aeration performance.
3. Loam. Loam refers to the soil with moderate content of clay, silt and sand particles in the composition of soil particles, and the particle size is between to. The texture is between clay and sand, and has the advantages of clay and sand, with good aeration and water permeability, water retention and thermal insulation performance, drought and waterlogging resistance, strong stress resistance, wide adaptability, long cultivation period, easy to cultivate into high-yield and stable-yield soil, and it is also an ideal agricultural soil.
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<> farmers used clay to grow crops, and the clay was used to build houses, roads, flower farming, dams, sculptures, etc. Soil, or soil, is a loose surface layer on the surface of the ball that has a certain fertility and can grow plants. It is the weathering of rocks formed and developed under the combined action of biological, climatic, topographic and other factors.
The composition of the soil includes minerals.
Organic matter, moisture and air. The main characteristic of the soil is its ability to continuously supply and regulate the water, nutrients, air and heat required by plants for life, i.e., soil fertility. Fertile soil can make water, fertilizer, air and heat conditions reach a stable, even, sufficient and suitable degree, and can resist the influence of harsh natural conditions to a certain extent, and adapt to the needs of plant growth.
Since the beginning of agriculture, soil has been the basic means of production for agricultural production. One.
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Summary. Hello, glad to answer for you. The main components in the soil are sand, clay, air, moisture, humus minerals and so on.
Hello, glad to answer for you. The main components in the soil are sand, clay, air, moisture, humus minerals and so on.
The soil is composed of minerals, limbs, organic matter, and living organisms, as well as solid, liquid, and gas such as water and air. By weight, minerals can account for more than 90 95 of the solid part, and organic matter accounts for about 10 of the Liquid Epoch.10 Therefore, the soil is a material system dominated by minerals.
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Hello, glad for you with this question! <>
There are the following words for you: fertile soil: Describes the fertile land, suitable for growing crops.
Dry soil: The land is water-scarce, arid and barren. Black Dirt:
Describe the land as rich in humus, loose and fertile. Red soil: The red soil, originally used to describe the bright color of the land.
Dense soil: Describes the land with lush vegetation and full of life. Desolate Dirt:
Described as barren, inaccessible and lonely.
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1. The soil of the hometown.
2. (Soft) sedan soil.
3. (Closed slag trembling damp) soil.
4. (Thick) soil.
5. (Fresh) soil.
6. (Wet) soil.
7. (Fertile) soil.
8. (Loose) soil.
9. (Swarthy) soil.
10. (Dry) the soil sold by the beam.
11. (Boundless) soil.
12. Soil (covered with fertilizer).
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What kind of dirt is "Ke Zetan to stare at the chain species description, here are some possible disturbing answers:
Fertile soil: This soil is rich in organic matter, which is conducive to the growth and reproduction of plants.
Loose soil: This soil has a light texture and is easy to cultivate and grow.
Sticky soil: This type of soil has a more viscous texture and is not easy to cultivate and cultivate.
Acidic soil: This soil has a low pH and is conducive to the growth of some plants.
Alkaline soil: This soil has a high pH, which is not conducive to the growth of some plants.
Soil with organic matter: This soil is rich in organic matter, which is conducive to the growth of plants.
Inorganic soil: This soil does not contain organic matter, which is not conducive to the growth of plants.
Moist soil: This soil has a high moisture content, which is conducive to the growth of plants.
Dry soil: This soil has a low moisture content and is not conducive to the growth of plants.
3) Water cultivation seedlings After the seeds emerge, water cultivation seedlings should be carried out under the condition of about 25 for 5 7 days. During the period of water cultivation, the root absorption of lotus seedlings is weak, and the growth mainly depends on the seed embryo to provide nutrients, and generally does not need to be fertilized. In the process of cultivating seedlings in water, the depth of the water layer should be kept about 10 cm, and sufficient light should be given; It is not advisable to change the water or turn it frequently, so as not to overelongate the leaves due to frequent changes in their growth direction; The petiole should be kept in the water and the leaves are freely flattened on the surface of the water. >>>More
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