Saline-alkali soil improved microbial agent and preparation process thereof

Abstract

The invention discloses a saline-alkali soil improved microbial agent and a preparation process thereof, and belongs to the field of saline-alkali soil improvement. The saline-alkali soil improved microbial agent is prepared from the following raw materials in parts by weight: 140-180 parts of a composite microbial agent, 100-130 parts of biochar, 30-50 parts of humic acid, 5-10 parts of a trace element, 10-15 parts of a filler and 30-50 parts of superphosphate. Synergistic growth and reproduction in a saline-alkali soil environment is achieved by combining bacillus subtilis, bacillus licheniformis, bacillus laterosporus, Jingyang streptomyce and bacillus mucilaginosus in a specific ratio. The combination of the kinds of microbial agents can improve synergistic alkali-resistance, the saline-alkali soil improved microbial agent can ferment well in saline-alkali soil, the growth of plants on saline-alkali soil is supported, biochar made from crop straws can improve the soil, help the growth of the plants, increase agricultural productivity and purify water quality, and is lower in cost relative to peat, and the saline-alkali soil improved microbial agent is worthy of promoting.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a saline-alkali land-improving microbial agent and a preparation process thereof. Background technique [0002] Soil salinization has a relatively large damage to the physical and chemical properties of the soil, which is extremely unfavorable to the growth of many crops, and it is easy to cause the lack of seedlings or death of crops, thus hindering the development of agricultural economy. The soil humus is leached and the soil structure is damaged. In addition, the soil is too alkaline, which affects the availability of nutrients such as phosphorus, iron, manganese, boron, and zinc in the soil, and easily causes a large amount of nitrogen, phosphorus, and potassium to be mainly Elements and trace elements such as iron, calcium, and boron are lacking. According to statistics, the area of ​​saline-alkali soil in China is about 200,000 square kilometers, accou...

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Problems solved by technology

[0006] It has the advantages of high stability, good effect and low cost, and solves the problem that the bacterial agents used for saline-alkali land improvement in the market are not stable, are easily affected by the environment, and the group structure or certain microorganisms die due to environmental changes or due to new The intervention of microorganisms leads to the change of the group advantage of the compound microbial branch, and the existing bacterial agents mainly use peat as an organic carrier, but peat is a mineral, limited by national resources, large-scale mining will destroy the ecology, and it is difficult to apply it in the soil. Dissolution, the organic matter in it is difficult to be used by crops, affecting fertilizer efficiency, and the price of peat is also increasing year by year, and the production cost of the product is also increasing year by year.

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