Acid soil conditioner and preparation method and application thereof

Abstract

The invention relates to an acid soil conditioner. The acid soil conditioner is prepared from, by weight, 20-40 parts of quick lime, 25-45 parts of straw charcoal powder, 5-15 parts of attapulgite, 5-15 parts of calcium magnesium phosphate fertilizer, 5-15 parts of silicon fertilizer, 5-15 parts of pig manure organic fertilizer, 5-15 parts of turf and 1-10 parts of K2HOP4. The invention further relates to a preparation method and application of the acid soil conditioner. The low-cost raw materials are combined according to a specific ratio, a use method is easy and convenient, the soil pH can be adjusted, nutritional elements needed by plants are added while the pH adjusting and heavy metal adsorption capacity is guaranteed, soil organic matter can be increased, formation of the soil granular structure can be promoted, the permeability of soil can be enhanced, plant growth can be promoted, and the risk of soil caking caused by application of a soil conditioner can be reduced.

Description

technical field [0001] The invention relates to the technical field of agricultural environment conservation and restoration, in particular to an acidic soil conditioner and its preparation method and application. Background technique [0002] Soil acidification is a manifestation of soil degradation. Soil acidification is not only an important reason for the decline of soil fertility, but also an important factor restricting the sustainable development of agricultural production. According to statistics, from the 1980s to the present, my country's soil acidification has become more and more serious, and the acidified land area has expanded to more than 40% of my country's cultivated land area, and often occurs in large areas, especially in southern my country. The soil itself is slightly acidic, and there is more rainfall, which makes the soil acidification more serious. [0003] Soil acidification can cause the activation of heavy metals such as aluminum, manganese, chromi...

AI Technical Summary

Problems solved by technology

However, among various soil improvers, the high cost of artificially synthesized polymer compounds and the potential risk of environmental pollution limit its wide application; a single soil improver has incomplete improvement effects or negative effects to varying degrees Waiting for deficiencies

Patent CN201410772920.5 discloses a soil conditioner that can be used for soil acidification conditioning and cadmium pollution remediation and its preparation method. The product produced by this invention has low cost, simple formula, can increase soil pH, and can be used for soil acidification conditioning and Cadmium pollution remediation, but this product does not add nutrients needed by plants, and cannot comprehensively improve soil physical and chemical properties

Patent CN201110154187.7 discloses an organic environment-friendly soil conditioner for improving acidified or acidic soil. The soil conditioner produced by the invention can increase soil pH, increase nutrients such as calcium, magnesium, phosphorus, and potassium in soil, and increase soil Organic matter content, improve soil water and fertilizer retention capacity, improve soil physical and chemical properties, improve crop resistance (disease, insect, drought, etc.), reduce heavy metal toxicity, but the product process is complicated, the cost is high, and the source of raw materials is not abundant

Patent CN200710029172.1 provides a method for preparing an acidic soil conditioner in dry land in southern China. The soil conditioner is prepared by using calcined shell products, calcium magnesium silicate and magnesium ammonium phosphate as raw materials. The soil conditioner uses inorganic substances and can only supplement soil The lack of calcium, magnesium, silicon and other elements in the soil cannot solve the problems of soil structure deterioration and microbial population reduction caused by soil acidification.

[0005] For the technical problems existing in the above prior art description, no effective solution has been proposed yet

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