Bio-organic fertilizer with soil structure improving function and preparation method thereof

Abstract

The invention discloses a preparation method of a bio-organic fertilizer with a soil structure improving function. The method comprises the following steps: (1) carrying out sludge fermentation, wherein calcium peroxide powder, porous hydroxyapatite powder and an anaerobic fermentation inoculant are added into sludge, and uniformly mixed, and anaerobic fermentation is performed to obtain a sludge fermentation product; (2) adding crushed crop straws, animal manure and a fermentation inoculant into the sludge fermentation product prepared in the step (1), uniformly mixing, and carrying out stacking fermentation to prepare a secondary fermentation product for later use; and (3) before use, mixing calcium peroxide powder, porous hydroxyapatite powder and the secondary fermentation product prepared in the step (2) to obtain the bio-organic fertilizer with the soil structure improving function. When the organic fertilizer prepared by the preparation method is applied to hardened soil, the volume weight of the soil can be remarkably reduced, the pH value of the hardened soil is reduced, and the water content of the soil is improved.

Description

technical field [0001] The invention relates to the technical field of organic fertilizers, in particular to a bio-organic fertilizer with the function of improving soil structure and a preparation method thereof. Background technique [0002] Soil compaction refers to the phenomenon that the surface layer of the soil is poor in structure due to the lack of organic matter, and the structure is destroyed and the soil material is dispersed under the action of external factors such as irrigation or rainfall, and the soil surface is hardened by the cohesive force after drying. [0003] The main factors that usually cause soil compaction are as follows: [0004] 1. The input of organic materials is small, that is, no organic fertilizer is applied or straw is returned to the field, so that the organic matter in the soil is insufficiently supplemented, the soil organic matter content is low, the physical and chemical properties are deteriorated, and the activity of microorganisms i...

AI Technical Summary

Problems solved by technology

[0004] 1. The input of organic materials is small, that is, no organic fertilizer is applied or straw is returned to the field, so that the organic matter in the soil is insufficiently supplemented, the soil organic matter content is low, the physical and chemical properties are deteriorated, and the activity of microorganisms is affected, thereby affecting the formation of soil aggregate structure, resulting in The acidity and alkalinity of the soil is too large or too small, resulting in soil compaction

[0005] 2. Long-term single partial application of chemical fertilizers, that is, serious shortage of farmyard manure, heavy nitrogen and light phosphorus and potassium fertilizers, soil organic matter declines, humus cannot be replenished in time, causing soil compaction and cracks

However, this type of organic fertilizer generally has the problem of poor improvement effect

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