Multifunctional organic slow-release fertilizer based on tea seed cake extract and preparation method of multifunctional organic slow-release fertilizer

Abstract

The invention discloses a multifunctional organic slow-release fertilizer based on a tea seed cake extract and a preparation method thereof. The multifunctional organic slow-release fertilizer based on the tea seed cake extract comprises the following components: 10-13 parts of the tea seed cake extract, 1-3 parts of a microbial agent, 2 parts of trace elements and 2 parts of a polymer slow-release agent. The multifunctional organic slow-release fertilizer is rich in various nutrient substances, environment-friendly, capable of effectively controlling the nutrient release rate and capable of remarkably enhancing the insecticidal effect.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to a multifunctional organic slow-release fertilizer based on tea seed meal extract and a preparation method thereof. Background Art

[0002] Excessive use of traditional fertilizers not only leads to waste of resources and environmental pollution, but also reduces fertilizer utilization efficiency and may lead to a decline in crop yield and quality. Since fertilizers contain relatively single nutrients, they may disrupt the nutritional balance in the soil, affect the effectiveness of other essential elements, and thus lead to soil nutrient imbalance. In some cases, excessive application of fertilizers can also lead to excessive levels of harmful heavy metals and pathogens in the soil, further reducing the quality of agricultural products. In addition, excessive use of fertilizers may also increase the frequency of pests and diseases, weaken the natural resistance of crops to pests and diseases, thereby increasing the use of pesticides and posing a direct threat to food safety.

[0003] Tea seed meal extract is a plant-derived organic fertilizer that has the dual functions of fertilizer and insecticide, and is of great significance for protecting soil ecology and the environment. Tea saponin, as the main component of biological pesticides, performs well in preventing and controlling pests, mites and other harmful organisms. At the same time, the nutrients such as protein, amino acids and polysaccharides rich in tea seed meal, as an efficient organic fertilizer, have a positive impact on the growth of crops and fruit trees.

[0004] The wide application of tea seed meal extract helps to reduce the pollution of chemical pesticides and fertilizers to the environment and maintain the balance of agricultural ecology, which is crucial to achieving the national goal of reducing the amount of pesticides and fertilizers. In addition, the use of tea seed meal extract can also promote the resource utilization of agricultural waste, promote the development of agricultural economy, and have a far-reaching impact on the development of organic agriculture. Therefore, it is of great practical application value to develop a multifunctional organic slow-release fertilizer based on tea seed meal extract to reduce pollution to the environment, improve fertilizer utilization, and enhance its dual function as a fertilizer and pesticide. Summary of the invention

[0005] The present invention specifically relates to a multifunctional organic slow-release fertilizer based on tea seed meal extract and a preparation method thereof. The multifunctional organic slow-release fertilizer is rich in various nutrients, is environmentally friendly, effectively controls the nutrient release rate, and can significantly enhance the insecticidal effect.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The first aspect of the present invention is to provide a multifunctional organic slow-release fertilizer based on tea seed meal extract, comprising the following components: 10-13 parts of tea seed meal extract, 1-3 parts of microbial agent, 2 parts of trace elements, and 2 parts of polymer slow-release agent.

[0008] As a further technical solution, the tea dregs extract is tea saponin, tea seed polysaccharide and tea protein.

[0009] As a further technical solution, the microbial agent is any one or more of Bacillus subtilis, Bacillus amyloliquefaciens, and Bacillus gelatinosa.

[0010] As a further technical solution, the trace elements are iron (Fe) and zinc (Zn).

[0011] As a further technical solution, the polymer sustained-release agent is a copolymer of polylactic acid (PLA) and glycolic acid.

[0012] The second aspect of the present invention is to provide a method for preparing a multifunctional organic slow-release fertilizer based on tea seed meal extract, comprising the following steps:

[0013] (1) crushing the tea seed meal extract to a particle size of less than 100 mesh;

[0014] (2) mixing the crushed tea seed meal extract with a microbial agent, adjusting the moisture content to 40-50%, and fermenting the mixture at a temperature of 55-60° C. for 10-14 days, with the fermentation pile turned every 4-7 days;

[0015] (3) uniformly mixing the trace elements and the fermented tea seed meal extract;

[0016] (4) mixing a polymer slow-release agent with the mixture to form a coating layer to control the nutrient release rate;

[0017] (5) granulating the mixture to control the particle size to 2-5 mm, and then drying it to control the moisture content to less than 10%;

[0018] (6) The dried fertilizer is packaged to obtain a multifunctional organic slow-release fertilizer based on tea seed meal extract.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Nutritional comprehensiveness: Through the reasonable proportion of natural ingredients such as tea saponin, tea seed polysaccharide, tea protein, and the addition of microbial agents and trace elements, the present invention can provide comprehensive nutrition required for crop growth and promote the healthy growth of crops.

[0021] 2. Enhanced insecticidal effect: The addition of tea saponin significantly improves the insecticidal effect of fertilizers, reduces the use of chemical pesticides, and helps control harmful organisms such as insects and mites.

[0022] 3. Slow-release effect: Using polylactic acid (PLA) and glycolic acid copolymer as the encapsulation layer can effectively control the nutrient release rate, extend the effective period of fertilizer, and improve fertilizer utilization. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail with specific embodiments in combination with the following examples. It should be understood that the following examples are only used to illustrate the technical solution of the present invention, but not to limit the scope of the present invention.

[0024] Example 1

[0025] A method for preparing a multifunctional organic slow-release fertilizer based on tea seed meal extract comprises the following steps:

[0026] (1) 5 parts of tea saponin, 3 parts of tea seed polysaccharide and 2 parts of tea protein are crushed to a particle size of less than 100 mesh;

[0027] (2) mixing the crushed tea seed meal extract with 1 part of Bacillus subtilis microbial agent, adjusting the moisture content to 40-50%, and fermenting the mixture at a temperature of 55-60° C. for 10-14 days, with the fermentation pile turned every 4-7 days;

[0028] (3) mixing 1 part of iron (Fe) and 1 part of zinc (Zn) trace elements with the fermented tea seed meal extract;

[0029] (4) mixing 2 parts of polylactic acid (PLA) and glycolic acid copolymer with the above mixture to form a coating layer to control the nutrient release rate;

[0030] (5) granulating the mixture to control the particle size to 2-5 mm, and then drying it to control the moisture content to less than 10%;

[0031] (6) The dried fertilizer is packaged to obtain a multifunctional organic slow-release fertilizer based on tea seed meal extract.

[0032] Example 2

[0033] A method for preparing a multifunctional organic slow-release fertilizer based on tea seed meal extract comprises the following steps:

[0034] (1) 6 parts of tea saponin, 4 parts of tea seed polysaccharide and 3 parts of tea protein are crushed to a particle size of less than 100 mesh;

[0035] (2) mixing the crushed tea seed meal extract with 1 part of Bacillus subtilis and 1 part of Bacillus amyloliquefaciens microbial agent, adjusting the moisture content to 40-50%, and fermenting the mixture at a temperature of 55-60° C. for 10-14 days, with the fermentation pile turned every 4-7 days;

[0036] (3) mixing 1 part of iron (Fe) and 1 part of zinc (Zn) trace elements with the fermented tea seed meal extract;

[0037] (4) mixing 2 parts of polylactic acid (PLA) and glycolic acid copolymer with the above mixture to form a coating layer to control the nutrient release rate;

[0038] (5) granulating the mixture to control the particle size to 2-5 mm, and then drying it to control the moisture content to less than 10%;

[0039] (6) The dried fertilizer is packaged to obtain a multifunctional organic slow-release fertilizer based on tea seed meal extract.

[0040] Example 3

[0041] A method for preparing a multifunctional organic slow-release fertilizer based on tea seed meal extract comprises the following steps:

[0042] (1) 6 parts of tea saponin, 4 parts of tea seed polysaccharide and 3 parts of tea protein are crushed to a particle size of less than 100 mesh;

[0043] (2) mixing the crushed tea seed meal extract with 1 part of Bacillus subtilis, 1 part of Bacillus amyloliquefaciens, and 1 part of Bacillus gelatinosa microbial inoculant, adjusting the moisture content to 40-50%, and fermenting the mixture at a temperature of 55-60° C. for 10-14 days, with the fermentation pile turned every 4-7 days;

[0044] (3) mixing 1 part of iron (Fe) and 1 part of zinc (Zn) trace elements with the fermented tea seed meal extract;

[0045] (4) mixing 2 parts of polylactic acid (PLA) and glycolic acid copolymer with the above mixture to form a coating layer to control the nutrient release rate;

[0046] (5) granulating the mixture to control the particle size to 2-5 mm, and then drying it to control the moisture content to less than 10%;

[0047] (6) The dried fertilizer is packaged to obtain a multifunctional organic slow-release fertilizer based on tea seed meal extract.

[0048] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be considered that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, simple modifications and substitutions made without departing from the concept of the present invention should be deemed to belong to the scope of protection of the present invention.

Claims

1. A multifunctional organic slow-release fertilizer based on tea seed meal extract, characterized in that: The invention comprises the following components: 10-13 parts of tea seed meal extract, 1-3 parts of microbial agent, 2 parts of trace elements and 2 parts of polymer sustained-release agent.

2. A multifunctional organic slow-release fertilizer based on tea seed meal extract, characterized in that: The tea dregs extract is tea saponin, tea seed polysaccharide and tea protein.

3. A multifunctional organic slow-release fertilizer based on tea seed meal extract, characterized in that: The microbial agent is any one or more of Bacillus subtilis, Bacillus amyloliquefaciens and Bacillus gelatinosa.

4. A multifunctional organic slow-release fertilizer based on tea seed meal extract, characterized in that: The trace elements are iron (Fe) and zinc (Zn).

5. A multifunctional organic slow-release fertilizer based on tea seed meal extract, characterized in that: The polymer sustained-release agent is a copolymer of polylactic acid (PLA) and glycolic acid.

6. A method for preparing a multifunctional organic slow-release fertilizer based on tea seed meal extract as claimed in claims 1 to 5, characterized in that: The following steps are involved: (1) crushing the tea seed meal extract to a particle size of less than 100 mesh; (2) mixing the crushed tea seed meal extract with a microbial agent, adjusting the moisture content to 40-50%, and fermenting the mixture at a temperature of 55-60° C. for 10-14 days, with the fermentation pile turned every 4-7 days; (3) uniformly mixing the trace elements and the fermented tea seed meal extract; (4) mixing a polymer slow-release agent with the mixture to form a coating layer to control the nutrient release rate; (5) granulating the mixture to control the particle size to 2-5 mm, and then drying it to control the moisture content to less than 10%; (6) The dried fertilizer is packaged to obtain a multifunctional organic slow-release fertilizer based on tea seed meal extract.