Environment-friendly modifier for improving saline-alkali soil and preparation method of environment-friendly modifier

Abstract

The invention discloses an environment-friendly modifier for improving saline-alkali soil and a preparation method of the environment-friendly modifier, and belongs to the technical field of soil improvement. The improver is prepared from the following raw materials: wormcast, fish bone meal, Kanuma soil, akadama soil, turf, urea, potassium sulfate, citric acid and compound microorganisms. The preparation method comprises the following steps: fermenting wormcast and fishbone dust under the action of compound microorganisms to obtain a fermentation product; mixing the Kanuma soil, the akadama soil and the turf, and crushing to obtain a mixture; and sequentially adding the mixture, urea, potassium sulfate and citric acid into the fermentation product, and uniformly stirring to obtain the environment-friendly modifier for improving the saline-alkali soil. When the soil conditioner is applied to saline-alkali soil, the organic matter content and the moisture content of the soil can be remarkably increased, the volume weight of the soil can be reduced, the pH value of the soil can be adjusted, the salt content can be reduced, and the soil conditioner has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to an environment-friendly improver for improving saline-alkali soil and a preparation method thereof. Background technique [0002] Soil salinization refers to the process in which the salt in the bottom soil or groundwater rises to the surface with capillary water, and after the water evaporates, the salt accumulates in the surface soil. The hazards of soil salinization include: when the soluble salt content in the soil increases, the osmotic pressure of the soil solution will decrease, and the water potential will decrease, which will cause difficulty in absorbing water for the plant roots, and "physiological drought" will appear. wilting and death; when the concentration of certain ions in the soil is too high, it will hinder the absorption of other ions by plants and make the plant nutrition unbalanced; in saline-alkali land, the high concentration of some ions will le...

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Problems solved by technology

The hazards of soil salinization include: when the soluble salt content in the soil increases, the osmotic pressure of the soil solution will decrease, and the water potential will decrease, which will cause difficulty in absorbing water for the plant roots, and "physiological drought" will appear. wilting and death; when the concentration of certain ions in the soil is too high, it will hinder the absorption of other ions by plants and make the plant nutrition unbalanced; in saline-alkali land, the high concentration of some ions will lead to insufficient supply of some low-concentration nutrients; alkali in the soil When there is too much salt, the soil will undergo a strong alkali reaction, which will easily precipitate plant nutrients such as iron, calcium, zinc, and magnesium, thereby reducing the availability of soil nutrients.

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