Kaolin tailing saline-alkali soil green tree-planting soil conditioner

Abstract

The invention discloses a kaolin tailings saline-alkali soil greening and tree planting soil conditioner. The main point of the technical scheme is that the ingredients are compressed nutrient soil from kaolin tailings, kaolin tailings carbonized soil, acidified zeolite particles, acidified straws, and desulfurized soil. It is composed of gypsum, humic acid, powdery water-retaining slow-release fertilizer for saline-alkali land, attapulgite clay, ferrous sulfate and water; after stirring and mixing the ingredients evenly, it is packaged as a soil conditioner for kaolin tailings for greening and tree-planting in saline-alkali land. The calcium and magnesium ions contained in the soil conditioner can replace the sodium ions on the colloid of the saline-alkali soil, reduce the content of the soil-exchangeable sodium ions, reduce the alkalinity of the soil, and at the same time can significantly improve the fertility of the saline-alkali soil. Increase the content of soil organic matter, calcium, magnesium, silicon, sulfur, nitrogen, phosphorus and potassium in saline-alkali land, achieve the purpose of improving saline-alkali land, and improve the survival rate of greening and tree-planting. Green trees.

Description

technical field [0001] The invention relates to a soil conditioner, in particular to a soil conditioner for greening and planting trees in saline-alkali land with kaolin tailings. Background technique [0002] Saline-alkali land means that the salt contained in the soil affects the normal growth of crops. Plants in severe saline-alkali soil areas can hardly survive. Soluble salts reduce the ability of plants to absorb water and nutrients, relatively reduce the content of soil organic matter, seriously lack nitrogen, phosphorus, potassium and trace elements, seriously damage the soil aggregate structure, reduce air permeability, and reduce the activity of aerobic microorganisms , slow soil maturation, resulting in soil compaction. Due to salinization, the physical and chemical properties of the soil deteriorate, and the living conditions of plants deteriorate. The work of greening and tree planting in saline-alkali soil is very difficult, and the survival rate of greening an...

AI Technical Summary

Problems solved by technology

[0007] The deficiencies of the above patents are: (1) the "nutrient soil" lacks ingredients for saline-alkali resistance and pH adjustment of saline-alkali land; It can be used in ordinary "original soil greening", but not suitable for "indigenous soil greening in saline-alkali land". In the process of greening and planting trees in saline-alkali land, the survival rate of seedlings is relatively low

[0009] The disadvantages of the above-mentioned patents are: (1) a large amount of sulfur powder (20% to 35%) has been selected in the ingredients. It is a low-toxic hazardous chemical, but the sulfur dioxide produced by its steam and sulfur combustion is highly toxic to the human body, so it is not suitable for saline-alkali soil conditioners

(2) Although "bentonite" is selected in the ingredients, those skilled in the art know that the pH value of sodium-based bentonite is generally 8.5-10.2, and that of calcium-based bentonite is generally 6.9-8.5. "Bentonite" is an alkaline soil. Therefore, "bentonite" has not been acidified and modified, and it is not suitable for soil conditioners in saline-alkali land