How to improve the soil with fly ash? Can coal ash improve soil?

Fly ash contains a variety of chemical nutrients required by plants, so it is a multi-functional soil amendment.

All kinds of cat soils are heavy in texture, poor ventilation, poor tillage, and water, fertilizer, gas, and heat are not coordinated, thus affecting crop growth. Using the physical characteristics of fly ash, the appropriate amount of fly ash (2

kg m,), which can significantly improve the soil texture.

Mainly: reduce the relative content of cat grains in Weng soil and improve the texture;

Reduce soil bulk density.

Increase soil porosity and raise cat soil 15

the temperature in the cm soil layer;

improve soil slope water content and field water holding capacity;

Adjust the soil three ratios (solid phase: liquid phase: gas phase);

Reduce the expansion rate of soil inlay. Improve soil permeability and prevent soil erosion. Fly ash significantly improved the physical properties of feline soil.

It promotes the biological activity of the soil in the soil, which is conducive to nutrient transformation and thermal insulation and moisture preservation, so that water, fertilizer, gas and heat are coordinated, and create a good soil environment for crop growth. At the same time, the nutrient trace elements such as silicon, copper, zinc, key, calcium, iron, manganese, turn, selenium and other nutrients contained in fly ash increased the content of these nutrients in the soil and improved the soil nutrient status. The application of fly ash can also increase the available phosphorus content in the soil.

Practice has proved that the application of appropriate amount of fly ash has a significant yield increase effect on wheat, corn, rice, soybean and other major crops, among which the average yield of wheat and corn is increased by 10%. In addition, it also has a certain effect on increasing the yield of crops such as millet, sweet potato, cotton, and vegetables. At the same time, there was an increase in the protein content of the grain grown after the application of fly ash.

Acidic soil improvementFor acidic cat soil, in addition to the above-mentioned improvement effect, fly ash can also increase the pH value in the soil slope, make the acidic soil neutral, and be conducive to the growth of crops.

Improvement of salinized fluvial soilThe application of fly ash to salinized fluvial soil can not only improve the characteristics of fluvial soil, but also play a role in reducing salinity.

In soils with low available silica, fly ash is used in combination with humic acid to increase the available silica content in the soil, thereby improving the growing conditions of crops.

Fly ash contains a certain amount of harmful elements, such as pot, chromium, lead, arsenic, mercury, benzo(a) flowers, radioactive elements, etc., after a lot of research and practice, in the amount of fly ash.

When the kg mz is less than that, it does not pollute the soil. There is also no contamination of food crops grown in these soils.

The best way is to replace the fill, to solve the root cause. The other is to choose as much as possible.

In the weather is good, the rain is less at home and abroad, often mixed with cement, lime, fly ash and other additives to stabilize the expansive soil, which is used.

Coal ash improves the soil. After testing, coal ash containing more heavy metals can not be used as fertilizer, and coal ash such as honeycomb coal can be applied to the soil as fertilizer under normal circumstances, but it needs to be powdered after sifting. Coal ash contains trace elements such as iron, calcium, manganese, and sulfur.

It can promote the growth of crops.

Origin of coalIn the Carboniferous period between 100 million and 300 million years ago.

Woody plants have evolved on Earth.

However, at that time, microorganisms on Earth were unable to break down lignin.

So these plants don't rot quickly after they die. In addition, the earth at that time was full of swamps, so when plants died, they were sequestered by sediment. After continuous geological changes, these materials will gradually carbonize at a certain temperature and pressure, and eventually form solid coal.

When the soil is compacted, the soil structure can be improved by using a plant ash solution. In the case of soil that is too dry, the application of plant ash can improve soil moisture content and permeability, and the potassium contained in plant ash can improve soil organic matter content and promote the formation of soil aggregate structure, thereby improving soil quality.

Grass ash is an inorganic salt. The ashes after plant burning are rich in calcium carbonate, magnesium carbonate, calcium bicarbonate, ferrous sulfate, potassium sulfate, potassium chloride and potassium salt. Grass ash contains a small amount of potassium, which is an important potash fertilizer.

With the improvement of potash production technology in China, the popularization and application of potash fertilizer use technology in agriculture and the development trend of modern agriculture, the application of plant ash in agriculture can greatly reduce the occurrence of pests and diseases, which is of great significance to the sustainable development of China's planting industry.

Mainly the remnants of the burning of plants.

Life: The earthen stoves of rural families burn firewood and grass, and the grass and wood ash produced must be collected at any time.

Production: The straw that cannot be transported back for use in the field should be burned on the spot, but attention should be paid to centralized burning, and the burned grass and wood ash can be recovered and returned to the field.

Factories: Some power plants use straw as raw materials for power generation, and a large amount of plant ash produced after combustion can be returned to the field as high-quality potash fertilizer; It can be made into bagged commercial plant ash fertilizer; After adding other ingredients, it can also be made into plant ash fertilizer with a variety of uses.

Summary. To be reinforced. Fly ash is a kind of bulk granular substance, belonging to sand silt, and its dynamic characteristics are closer to sand soil (non-cohesive soil), therefore, fly ash should be used as the foundation of the building, and the necessary reinforcement treatment should be carried out.

The design requires, the bearing capacity of the composite foundation is not less than 180kpa, the settlement is controlled at 80mm, according to the superstructure and foundation conditions, the design adopts the deep stirring method for foundation reinforcement, that is, through the cementation and solidification effect within the pile position, the pile with high strength is formed, and the pile has no compacting effect on the surroundings, and belongs to the reinforcement mode based on replacement.

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To be reinforced. Fly ash is a kind of bulk granular substance, belonging to sand silt, its dynamic characteristics are closer to sand soil (non-cohesive soil), therefore, fly ash as the foundation of the building, should be necessary to be redressed and solidified. The design requires, the bearing capacity of the composite foundation is not less than 180kpa, the settlement is controlled at 80mm, according to the superstructure and the foundation conditions, the design adopts the deep stirring method for foundation reinforcement, that is, through the cementation and solidification effect within the pile position, the pile with higher strength is formed, and the pile has no compacting effect around the nuclear leakage foundation, and belongs to the reinforcement mode based on replacement.