Saline-alkali soil improver based on spent bleaching earth and waste residues and saline-alkali soil improvement method

Abstract

The invention provides a saline-alkali soil improver based on spent bleaching earth and waste residues and a saline-alkali soil improvement method. The raw material formula of the improver comprises the spent bleaching earth, a compound microorganism bacterium agent, humic acid, waste residues and a binder, wherein the compound microorganism bacterium agent is a mixture composed of bacillus subtilis, bacillus licheniformis, bacillus laterosporus, streptomyces jingyangensis and bacillus mucilaginosus, the nutrient solution volume ratio of which is 1 to (1.2-1.6) to (0.5-0.7) to (1.2-1.5) to (0.6-0.9); the mass percentages of the compound microorganism bacterium agent and the spent bleaching earth in the raw material formula are respectively 0.5%-2% and 45%-80%; the waste residues are acetic acid residues and/or starch pulp. The improver and improvement method have the beneficial effects that the improvement of saline-alkali soil can be effectively realized by adopting the improver in combination with the improvement method; the improvement requirement of the saline-alkali soil is fundamentally satisfied; meanwhile, the cost of the improver is low; the resource reutilization can be realized; the environmental pollution is reduced.

Description

technical field [0001] The invention relates to a soil improver, in particular to a saline-alkali soil improver. 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. Due to the high salt content, low organic mass, and high pH in saline-alkali land, the soil humus is leached and the soil structure is damaged. It is sticky when wet and hard when dry. There are often white salt deposits on the soil surface, and poor ventilation and water permeability. Severe cases can cause plant wilting, poisoning and root rot to die. In addition, if the soil is too alkaline, it will affect the availability of nutrients such as phosphorus, iron, manganese, boron, and zinc in the soil, and will easily cause a large amount of nitrogen, phos...

AI Technical Summary

Problems solved by technology

The patented formula is complex, inconvenient to produce, a large amount of nutrients needed for microbial growth are added, and the cost is high...

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