Slow-release microbial organic fertilizer and preparation method thereof

Abstract

The invention discloses a slow release type microbial organic fertilizer, which comprises a core layer and a coating layer, the core layer is formed by compounding a fermented fertilizer and urea formaldehyde; the fermented fertilizer is obtained by fermenting betel nut residue powder, mulberry leaf powder, animal waste, fish scale powder and modified medical stone powder through compound microorganisms; the coating layer is prepared from konjaku flour, sodium alginate and boric acid; the compound microorganism is prepared from bacillus methylotrophicus, bacillus subtilis and bacillus laterosporus; according to the fertilizer disclosed by the invention, the storage period of the bio-organic fertilizer is prolonged by adopting a biopolymer coating form, the activity maintenance time of microorganisms in the bio-organic fertilizer is prolonged, the storage period of the fertilizer is remarkably prolonged, the slow-release fertilizer is obtained by adopting a coating form, and nutritional ingredients in the fertilizer are slowly released, so that the fertilizer has a good application prospect. Nutrients required by growth of plants in different stages can be met, waste of the fertilizer is avoided, and the utilization rate of the fertilizer is increased.

Description

technical field [0001] The invention belongs to the field of microbial organic fertilizers, in particular to a slow-release microbial organic fertilizer and a preparation method thereof. Background technique [0002] With the development of agriculture, the demand for fertilizers is increasing. At present, the application of chemical fertilizers is increasing. The existing chemical fertilizers can be quick-acting. After application, the growth of crops can be significantly improved, and chemical fertilizers are water-soluble. Well, with soil erosion, it is easy to cause the loss of fertilizer efficiency, which cannot promote the growth of crops for a long time. It is necessary to apply fertilizer frequently in different periods of plant growth, resulting in waste of fertilizer resources and a series of environmental problems. [0003] Microbial organic fertilizer is obtained by decomposing nutrients in organic materials by specific microorganisms or other identified two or m...

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Problems solved by technology

[0002] With the development of agriculture, the demand for fertilizers is increasing. At present, the application of chemical fertilizers is increasing. The existing chemical fertilizers can be quick-acting. After application, the growth of crops can be significantly improved, and chemical fertilizers are water-soluble. Well, with the erosion of soil and water, it is easy to cause the loss of fertilizer efficiency, which cannot promote the growth of crops for a long time. It is necessary to apply fertilizers frequently in different periods of plant growth, resulting in waste of fertilizer resources, and also caused a series of environmental problems.

[0003] Microbial organic fertilizer is obtained by decomposing nutrients in organic materials by specific microorganisms or other identified two or more microorganisms that are not antagonistic to each other, so that the nutrients in organic materials can be fully released and provide sufficient nutrients for plants. Compared with chemical fertilizers that are easily soluble in water, the existing microbial organic fertilizers have a longer action cycle of nutrients, and can also improve soil physical and chemical properties, promote plant growth, and prevent and control diseases; however, pure microbial organic fertilizers still exist The loss of nutrients causes the problem of waste of resources. At the same time, it also has the problem of short storage time and long-term storage will cause the problem of reduced fertilizer efficiency.

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