Substrate using coal ash and vinegar residue as raw materials and composting method thereof

Abstract

The invention relates to a substrate using coal ashes and vinegar residues as raw materials and a composting method thereof. The substrate comprises the main components of 25-50 percent of coal ash and 50-75 percent of vinegar residue in percent by volume. 1-5 percent of phosphorus-containing fertilizer, 0-3 percent of potassic-containing fertilizer, 1-5 percent of nitrogen-containing fertilizer, 0-10 percent of acidity modifier and 0-10 percent of alkalinity modifier are added in the components of the substrate. The substrate of the invention integrates complementation effect of chemical properties of the coal ashes and the vinegar residues, lowers the pH value of the coal ashes, can improve the nutrition condition of the coal ashes, and meanwhile, enables the original excessively loose vinegar residues to be more compact, and is beneficial to soil and water conservation. By adding proper amount of fertilizer, the nitrogen, the phosphorus and the potassic in the substrate are richened. The invention can effectively decompose a large quantity of coal ashes and vinegar residues discharged by an electric power plant and a vinegar plant during the production, and reduce the environment pollution. The substrate is planted with Chinese lawn grasses for 1-2 years, heavy metals and other harmful substances in the substrate can be basically eliminated, and a high-quality excellent substrate approaching or similar to the indexes of the northeast grass peat is obtained.

Description

technical field [0001] The invention relates to a plant growth substrate and a cultivation method thereof, in particular to a substrate prepared from fly ash and vinegar grains as main raw materials and a method for making the substrate. Background technique [0002] Fly ash is the fine ash collected from the flue gas after coal combustion. It is the main solid waste discharged from thermal power plants. Its chemical composition is rich and stable. Its physical properties are fine-grained, porous, and resemble loamy sand. It has good air permeability, water permeability and water retention, and is very suitable as a carrier for absorbing and carrying plant nutrients. [0003] Vinegar grains are the residue left after fermenting rice, wheat, sorghum, etc. to make vinegar. It is highly acidic and rich in certain organic matter, nitrogen, phosphorus, potassium and other nutrients, as well as a small amount of amino acids, medium elements, and trace elements. [0004] Because ...

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Problems solved by technology

[0010] The above-mentioned public materials all use waste such as fly ash or vinegar grains as the main matrix material to be improved independently, and the complementary

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