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CN-122010641-A - Organic-mineral compound fertilizer and preparation method thereof

CN122010641ACN 122010641 ACN122010641 ACN 122010641ACN-122010641-A

Abstract

The application discloses an organic-mineral compound fertilizer and a preparation method thereof, wherein the organic-mineral compound fertilizer comprises, by mass, 8% -15% of plant source humic acid, 30% -45% of nano multi-mineral powder, 0.1% -1% of functional microbial agent and the balance of organic fertilizer. The fertilizer realizes the synergistic effect of all the components by optimizing the means of component selection, raw material proportion, key component regulation and control and the like, so that the obtained compound fertilizer has the effects of high-efficiency nutrient utilization and soil improvement and has practical application prospect.

Inventors

  • HU HUAHAI
  • LIANG KEYIN
  • LIU XU
  • LI YING

Assignees

  • 安徽合丰禾润农业技术有限公司

Dates

Publication Date
20260512
Application Date
20260211

Claims (10)

  1. 1. The organic-mineral compound fertilizer is characterized by comprising the following raw materials in percentage by mass: 8% -15% of plant source humic acid, 30% -45% of nano-mineral powder, 0.1% -1% of functional microbial agent and the balance of organic fertilizer.
  2. 2. The organic-mineral compound fertilizer according to claim 1, wherein the plant source humic acid is obtained by fermenting and extracting at least one of decomposed straw, sawdust, coconut coir and peanut shell; preferably, the acid value of the plant source humic acid is between 200 and 400mg KOH/g, and the granularity of the plant source humic acid is 80 to 200 meshes; preferably, the plant source humic acid is subjected to acid/microorganism synergistic activation treatment.
  3. 3. The organic-mineral composite fertilizer according to claim 1, wherein the nano-mineral powder has a particle size D50 of 100-500nm.
  4. 4. The organic-mineral composite fertilizer according to claim 1, wherein the nano-mineral powder contains at least silicon, calcium and magnesium, wherein the mass content of silicon is 18% -25%, the mass content of calcium is 20% -28%, and the mass content of magnesium is 10% -15%.
  5. 5. The organic-mineral composite fertilizer according to claim 4, wherein the nano-mineral powder further comprises other trace elements, and the other trace elements are any one or more than two of iron, manganese, zinc, copper, boron and molybdenum.
  6. 6. The organic-mineral compound fertilizer according to claim 1, wherein the nano-mineral powder is obtained by crushing and grinding silicon, calcium and magnesium minerals or is a commercially available product of silicon-calcium-magnesium fertilizer meeting the requirements of components and particle sizes.
  7. 7. The organic-mineral compound fertilizer according to claim 1, wherein the functional microbial agents comprise bacillus subtilis CGMCC1.1656 and bacillus mucilaginosus ACCC 10013, and the ratio of the viable count of the two bacteria is 1:1-2:1.
  8. 8. The organic-mineral composite fertilizer according to claim 1, wherein the organic fertilizer is at least one of decomposed livestock manure, decomposed straw, and compost mixture or a mixture of two or more of them.
  9. 9. The organic-mineral composite fertilizer according to claim 1, wherein the organic fertilizer has a particle size of 80-200 mesh.
  10. 10. A method of preparing an organo-mineral composite fertiliser as claimed in any one of claims 1 to 9, comprising the steps of: pre-treating the organic fertilizer, namely crushing the organic fertilizer, adding a compound enzyme preparation for enzymolysis, carrying out anaerobic fermentation, and finally drying and crushing to 80-200 meshes; Activating humic acid, namely inoculating humic acid activating bacteria to perform microbial activation after plant source humic acid acidizing treatment, and drying and crushing to 80-200 meshes after the microbial activation is completed; The multi-mineral powder treatment, namely nano grinding the raw materials of the Si-Ca-Mg mineral until the grain diameter D50 is 100-500nm; premixing, namely mixing and activating the activated plant source humic acid with nano multi-mineral powder to obtain a premixed material; mixing, granulating, drying and sieving, namely uniformly mixing the premixed material with the pretreated organic fertilizer and the functional microbial agent, granulating, drying until the water content is less than or equal to 10%, and sieving to obtain the organic-mineral compound fertilizer; preferably, the compound enzyme preparation is cellulase, hemicellulase and pectase with a mass ratio of 2:1:1, and the enzymolysis condition is 50 ℃ for 3 hours; preferably, the anaerobic fermentation process comprises inoculating EM microbial inoculum and anaerobic fermentation for 6 days; preferably, the acidification treatment is to treat the plant source humic acid in acid liquor of 0.6-1mol/L at 65-75 ℃ for 1-2h; preferably, the conditions for activation of the microorganism are 35℃for 4 days; preferably, the premixing is mixed and activated for 35-45min at 45-55 ℃; Preferably, the particle size of the organic-mineral compound fertilizer is 2-4mm.

Description

Organic-mineral compound fertilizer and preparation method thereof Technical Field The application belongs to the technical field of fertilizers, and particularly relates to an organic-mineral compound fertilizer and a preparation method thereof. Background The fertilizer is an important production data indispensable in agricultural production. The problems of soil hardening, acidification, fertility reduction, environmental pollution and the like are easily caused by the long-term and large-scale use of the traditional chemical fertilizer. Therefore, the development of novel fertilizers with environmental protection, high efficiency and comprehensive nutrition becomes a research hotspot. The organic fertilizer can improve the soil structure but has slow nutrient release, the humic acid can promote the growth of crops but has limited single use effect, and the mineral fertilizer can supplement trace elements but is easy to cause soil hardening. At present, the compound fertilizer obtained by mixing various components is a common means in the prior art, but the components are unreasonable in selection, raw material proportion, key component regulation and control, raw material particle size and other control, so that the advantages of the raw materials cannot be cooperatively exerted, and the effect of the compound fertilizer is not ideal or can not reach expectations. Therefore, there is a need to develop a compound fertilizer in which the components can synergistically increase to achieve the effects of efficient nutrient utilization and soil improvement. Disclosure of Invention In view of the above, the primary object of the present application is to provide an organic-mineral compound fertilizer, which realizes synergistic effect of each component by optimizing means such as component selection, raw material proportion, key component regulation and control, so that the obtained compound fertilizer has both nutrient efficient utilization and soil improvement effects. In order to achieve the above purpose, the present application adopts the following technical scheme: The application discloses an organic-mineral compound fertilizer which comprises the following raw materials in percentage by mass: 8% -15% of plant source humic acid, 30% -45% of nano-mineral powder, 0.1% -1% of functional microbial agent and the balance of organic fertilizer. The application also discloses a preparation method of the organic-mineral compound fertilizer, which comprises the following steps: pre-treating the organic fertilizer, namely crushing the organic fertilizer, adding a compound enzyme preparation for enzymolysis, carrying out anaerobic fermentation, and finally drying and crushing to 100 meshes; Activating plant source humic acid, namely inoculating humic acid activating microbial agent for microbial activation after acidizing the plant source humic acid, and drying and crushing the plant source humic acid to 100 meshes after the microbial activation; The multi-mineral powder treatment, namely nano grinding the raw materials of the Si-Ca-Mg mineral until the grain diameter D50 is 100-500nm; premixing, namely mixing and activating the activated plant source humic acid with nano multi-mineral powder to obtain a premixed material; mixing, granulating, drying and sieving, namely uniformly mixing the premixed material with the pretreated organic fertilizer and the functional microbial agent, granulating, drying until the water content is less than or equal to 10%, and sieving to obtain the organic-mineral compound fertilizer. The application has the beneficial effects that: According to the application, the high-efficiency utilization of nutrients is realized through the synergistic cooperation of the organic fertilizer, the nano-sized multiple mineral powder, the plant source humic acid and the functional microbial agent. The nanometer multi-mineral powder nanometer particle size greatly increases the contact area of each component, and provides powerful conditions for activating mineral nutrients for the functional microbial agent and the plant source humic acid system; the addition of the functional microbial agent solves the problems of insufficient nutrient activation, unbalanced soil microecology and the like of the traditional compound fertilizer, realizes slow release and efficient utilization of nutrients, and overcomes the defects of easy fixation of mineral fertilizers and slow organic fertilizer efficiency. The synergistic cooperation of the organic fertilizer, the nano-sized multiple mineral powder, the plant source humic acid and the functional microbial agent not only can remarkably improve the yield and quality of crops, but also can increase the organic matter content of soil, improve the soil structure, reduce the volume weight of the soil, improve the porosity of the soil, realize the sustainable improvement of the soil fertility and give consideration to economic benefit and ecological benefit. Detailed