A biomass long-acting slow-release organic fertilizer for quickly constructing a micro-ecosystem and a preparation method thereof

Abstract

The present application relates to a kind of biomass long-acting slow-release organic fertilizer for quickly building micro-ecosystem, the biomass long-acting slow-release organic fertilizer for quickly building micro-ecosystem includes the following components: livestock and poultry manure, animal meat, plant straw, microbial inoculum, modified carrier, grain debris;Solid-state biological fermentation used in the present application has the advantage of highly adaptive and unified strain and raw material, and can realize rapid coordination in soil.The added modified carrier can directly act as the survival carrier of active bacteria, and can provide necessary nutrient substances for microorganisms during natural degradation process.The farmland soil ecosystem is closer to solid-state environment, so the new biomass compound fertilizer of solid-state biological fermentation method cultured bacterial body and homologous organic matter fertilizer matched with long-acting high organic biological carrier has more advantages in adaptability and compatibility compared with the strain cultured by liquid high-density cultivation method and the ordinary fertilizer matched with heterologous organic matter and lacking organic carrier.

Description

Technical Field

[0001] This invention relates to the field of organic fertilizer technology, and in particular to a biomass long-acting slow-release organic fertilizer for rapidly constructing micro-ecosystems and its preparation method. Background Technology

[0002] Most current bio-based organic fertilizers employ a production process involving initial fermentation followed by compounding. Some manufacturers with limited technical capabilities may use a process of directly compounding without fermentation to produce the finished product. This has the drawback of ensuring that the ingredients pass testing, but the fertilizer efficacy cannot be guaranteed.

[0003] Currently, most finished product testing of bio-based organic fertilizers uses chemical methods, specifically quantitative chemical analysis of a single component. This allows manufacturers to achieve compliance by directly adding chemical raw materials targeted at this test during production. Consequently, there is a discrepancy between passing chemical testing and actual bio-fertilizer efficacy, hindering the progress of the bio-fertilizer industry and impacting agricultural development.

[0004] Bio-organic fertilizers often involve the addition of large quantities of microbial strains during downstream production to meet national standards for microbial content. However, these strains are mostly prepared using liquid high-density culture fermentation methods. These strains are highly homogeneous, have poor single-ecosystem compatibility, and exhibit homology differences with the organic matter carriers in organic fertilizers. This means that the effectiveness of these live bacteria in building the soil's micro-ecosystem cannot be guaranteed. Similarly, the "humic acid" and "amino acid" substances added later are mostly produced using chemical methods, also resulting in a single-component composition that can only provide partial functionality for soil micro-ecosystem construction. Both of these bio-fertilizer production methods, which rely on adding single-component raw materials later, suffer from the "barrel effect" due to insufficient raw material diversification, making it difficult to achieve a comprehensive and sustainable promotion of soil micro-ecosystem construction. Summary of the Invention

[0005] This invention provides a biomass-based long-acting slow-release organic fertilizer for rapidly constructing micro-ecosystems. Compared with currently widely used bio-organic fertilizers, microbial inoculant-based organic fertilizers, and refined organic fertilizers in agriculture, it represents a fundamental innovation in fertilizer design. The invention describes aspects such as primary product accumulation, process segmentation, and new labeling of active ingredients, introducing a production technology for a novel biomass compound organic fertilizer that efficiently and rapidly constructs farmland soil micro-ecosystems and has a long-lasting slow-release effect.

[0006] Therefore, it is necessary to provide a biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem, wherein the biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem comprises the following components in parts by weight: 50-90 parts biomass 1-3 servings of nutrients Aminoglycoside enzyme 0.5-0.8 parts 0.5-1 part of microbial inoculant 5-8 parts of modified carrier 2-5 portions of grain scraps 8-12 parts water; The modified carrier is obtained by reacting carboxylated activated carbon with chitosan and polymaleic acid.

[0007] Furthermore, the microbial agent is selected from one or more of Bacillus subtilis, Bacillus licheniformis, actinomycetes, and Trichoderma.

[0008] Furthermore, the biomass is selected from one or more of livestock and poultry manure, animal meat, and plant straw.

[0009] Specifically, the solid-state bio-fermentation method used in this scheme has the advantage of "high adaptability and uniformity between microbial strains and raw materials," enabling rapid coordination in the soil. Simultaneously, the added modified carrier can directly serve as a survival carrier for active bacteria and provide essential nutrients for microorganisms during natural degradation. Since farmland soil ecosystems are closer to a solid-state environment, this novel biomass compound fertilizer, combining microbial cells cultivated through solid-state bio-fermentation with homologous organic fertilizer and a long-lasting, high-organic biological carrier, has greater advantages in adaptability and compatibility compared to microbial strains cultivated through liquid high-density culture methods and ordinary fertilizers combined with heterologous organic matter and lacking an organic carrier.

[0010] During solid-state fermentation, microbial cells accumulate active products as they multiply. Taking enzymes as an example, these not only accelerate the decomposition of raw materials but also provide essential nutrients for the cultivation of the next generation of microorganisms. Simultaneously, the organic matter used as raw material undergoes humification, forming humic substances, primarily humic acid. Humic substances are a key indicator of soil fertility and a crucial component of the soil ecosystem, directly participating in its formation and playing a vital role in its rapid development.

[0011] Furthermore, the grain scraps are selected from one or more of corn, wheat, and soybeans.

[0012] Furthermore, the livestock and poultry manure is selected from one or more of chicken manure, cow manure, and pig manure.

[0013] This invention also provides a method for preparing a biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem, the method comprising the following steps: S1. Mix activated carbon with nitric acid and heat to react, to obtain carboxylated activated carbon; S2. Carboxylated activated carbon, chitosan and polymaleic acid are mixed and heated to react under the action of an activator to obtain a modified carrier; S3. Ferment the components other than the modified carrier to obtain the fermentation material; S4. The modified carrier is blended with other components to obtain the biomass long-acting slow-release organic fertilizer used for rapidly constructing micro-ecosystems.

[0014] Specifically, the modified carrier of this invention, in synergy with polymaleic acid, carboxylated activated carbon, and chitosan, can achieve targeted adaptation and improvement of different types of soil, such as alkaline / saline, acidic, sandy / clay, and nutrient-deficient soils. It can respectively achieve the dual reduction of salinity and alkalinity, improve soil compaction, buffer acidity, reduce heavy metal toxicity and improve fertilizer retention capacity, improve water and fertilizer retention of sandy soils and improve aeration of clay soils. At the same time, polymaleic acid, carboxylated activated carbon, and chitosan form stable covalent bonds through EDC / NHS activators, which can prevent desorption and loss in soil environments with different pH values ​​and ion concentrations, ensuring the continuous function of carboxyl functional groups, avoiding the decay of the carrier adaptation effect, and allowing the modified carrier to stably play an improving role in various soils. It also provides a continuous and stable micro-ecological environment for native strains and native humus, ensuring the high efficiency and durability of soil micro-ecological construction.

[0015] Further, in step S1, the mass ratio of activated carbon to nitric acid is 1-3:12-15.

[0016] Further, in step S2, the mass ratio of the carboxylated activated carbon, chitosan, and polymaleic acid is 3-5:1-3:2-4.

[0017] Furthermore, in step S1, the heating temperature is 50-60°C.

[0018] Furthermore, in step S2, the heating temperature is 50-65°C.

[0019] Furthermore, in step S2, the activator is selected from EDC activators and NHS activators.

[0020] Specifically, the live bacteria and organic raw materials from bacterial metabolism and decomposition contained in the organic fertilizer of this invention are fundamental components that directly participate in the construction of farmland soil microecology, thereby ensuring the rapid effectiveness of the novel bio-compound organic fertilizer in building a soil-farmland ecosystem. The "safe and high-organic carrier" section emphasizes that this part must have an organic matter content of over 80%, be safe and harmless, participate in natural biodegradation, and not cause secondary pollution to the soil. It can act as a carrier for live bacteria, assisting microorganisms in their reproduction in the soil, and provide nutrient support for microbial activity during degradation, thus achieving a long-lasting, slow-release effect.

[0021] This invention relies on solid-state bio-fermentation technology, which simultaneously completes the natural reproduction and accumulation of active products of native microorganisms, as well as the primary humification transformation of organic matter during fermentation. The generated humic substances and microorganisms are all naturally derived native components within the fermentation system, not artificially added later. This fundamentally avoids the problems of traditional organic fertilizers that require the later addition of single humic acids, differences in homology caused by microorganisms, and poor ecological compatibility. The native components have a higher compatibility with the microbial ecology of farmland soil, can quickly integrate into the soil environment, and significantly improve the soil colonization rate of microorganisms and the bioavailability of humic substances. At the same time, the native humic substances and the newly generated microorganisms form a natural symbiotic and synergistic relationship, which can directly participate in the composition and construction of the soil microbial ecology, avoiding the drawbacks of fertilizer effect gaps and unsustainable microbial ecology construction caused by later added components, and achieving the natural, efficient, and stable construction of the soil microbial ecosystem.

[0022] By using solid-state bio-fermentation to cultivate beneficial microorganisms, the accumulation of native bacteria and active bacterial products is achieved. While solid-state fermentation is underway, organic raw materials are transformed with "humus" as one of the accumulation targets to obtain native humic acid substances. High organic biological carriers that can improve the survival rate of active bacteria after entering the soil are specially added to provide living conditions for active bacteria and play a long-term slow-release role.

[0023] The present invention has the following beneficial effects: The biomass long-acting slow-release organic fertilizer of the present invention for rapidly constructing a micro-ecosystem is composed of livestock and poultry manure, animal meat, plant straw, microbial agents, modified carriers, and grain fragments as components of the organic fertilizer. First, activated carbon is reacted with nitric acid to obtain carboxylated activated carbon. Then, the carboxylated activated carbon, chitosan, and polymaleic acid are reacted under the action of EDC activator and NHS activator to obtain a modified carrier, thereby introducing chitosan and polymaleic acid onto the activated carbon. After the raw materials are fermented and the modified carrier is mixed with the fermented material, the organic fertilizer is obtained. First, the porous structure of carboxylated activated carbon in the modified carrier provides a large number of stable colonization and reproduction sites for microbial agents. Polymaleic acid can efficiently chelate interfering ions such as calcium and magnesium in the soil, improving the soil's physical and chemical microenvironment. The biocompatibility of chitosan can effectively enhance the stress resistance and survival rate of the agents. The three work synergistically to greatly enhance the activity of microbial agents, enabling the rapid construction of soil micro-ecosystems. This makes the microbial agents less susceptible to damage in the complex soil environment, effectively avoiding the problems of agent loss and functional component desorption, thus ensuring the long-term and slow-release effect of organic fertilizer in building micro-ecosystems and improving soil fertility.

[0024] Furthermore, the polymaleic acid in the modified carrier forms stable covalent bonds with chitosan and carboxylated activated carbon through EDC / NHS activators, which significantly improves the interfacial bonding force between the components of the carrier. This effectively avoids problems such as decreased microbial agent carrying capacity and uneven nutrient release caused by carrier component aggregation and loose structure, ensuring the uniformity and stability of the modified carrier structure. The porous structure of carboxylated activated carbon, in synergy with polymaleic acid, can also significantly improve the compatibility and dispersibility of the modified carrier with humus and organic matter in the organic fertilizer fermentation material. This allows the modified carrier to be evenly and stably dispersed in the organic fertilizer system. At the same time, it can adsorb nutrients in the fermentation material, achieving slow release of nutrients and continuously providing nutritional support for the reproduction of microbial agents and the activity of native soil microorganisms, further enhancing the long-term slow-release effect of organic fertilizer. Detailed Implementation

[0025] To more clearly illustrate the technical solution of the present invention, the following embodiments are provided. Unless otherwise stated, the raw materials, reactions, and post-processing methods appearing in the embodiments are all commercially available raw materials and technical methods well known to those skilled in the art.

[0026] The terms "preferred," "more preferably," and "more suitable" used in this invention refer to embodiments of the invention that provide certain beneficial effects under certain circumstances. However, other embodiments may also be preferred under the same or other circumstances. Furthermore, the description of one or more preferred embodiments does not imply that other embodiments are unavailable, nor is it intended to exclude other embodiments from the scope of this invention.

[0027] It should be understood that, except in any operational instance or otherwise indicated, all figures representing the amounts of ingredients used, for example, in the specification and claims, should be understood to be modified in all cases by the term "about". Therefore, unless otherwise stated, the numerical parameters set forth in the following specification and appended claims are approximations varying with the desired performance to be obtained according to the invention.

[0028] Livestock and poultry manure: chicken manure.

[0029] Animal meat: chicken.

[0030] Plant stalks: corn stalks.

[0031] The grain scraps are a mixture of corn, wheat and soybeans in a 1:1:1 ratio.

[0032] Microbial inoculant: Bacillus licheniformis, purchased from Hebei Rongheng Fertilizer Co., Ltd.

[0033] EDC activator: 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide.

[0034] NHS activator: N-hydroxysuccinimide.

[0035] Activated carbon: 6-12 mesh, purchased from Henan Tingyuan Activated Carbon Co., Ltd.

[0036] Chitosan: molecular weight 1526.500 g / mol, C1516215, purchased from Shanghai Aladdin Co., Ltd.

[0037] Polymaleic acid: P62610, Acmec, purchased from Shanghai Jizhi Biochemical Technology Co., Ltd.

[0038] The nutrients are a mixture of corn flour and soybean flour in a mass ratio of 4:1.

[0039] Glycoamylase: SDG-2438, purchased from Cangzhou Xiasheng Enzyme Biotechnology Co., Ltd.

[0040] In the embodiments of this invention, "parts" refers to parts by mass. Example 1

[0041] A biomass-based slow-release organic fertilizer for rapidly constructing micro-ecosystems, comprising the following components in parts by weight: 25 samples of livestock and poultry manure 11 servings of animal meat 28 portions of plant straw 1 serving of nutrients 0.5 parts of saccharifying enzyme 0.5 parts of microbial inoculant 5 portions of modified carrier 3 portions of grain scraps 9 parts water; The method for preparing the biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem includes the following steps: S1. Activated carbon was mixed with 65wt% nitric acid and reacted with magnetic stirring at 60 °C for 5 h. After washing and drying, carboxylated activated carbon was obtained. The activated carbon and 65wt% nitric acid are in a mass ratio of 1:13. S2. Using water as a solvent, carboxylated activated carbon, chitosan and polymaleic acid are mixed and heated to 50°C for 2.5 h under the action of EDC activator and NHS activator. The mixture is then filtered, washed and dried to obtain the modified carrier. The mass ratio of the carboxylated activated carbon, chitosan, polymaleic acid, EDC activator, and NHS activator is 3:1:2:0.1:0.2. S3-1. According to the above mass proportions, mix corn flour, soybean flour and water, gelatinize at 100℃ for 20 min, cool to 60℃, add saccharifying enzyme and saccharify for 1 h, then heat to 95℃ to inactivate enzyme for 15 min, cool and add microbial inoculant for aerobic activation for 24 h to obtain intermediate product (aerobic activation conditions are: oxygen concentration of 20.95%, temperature of 35℃, shaking speed of 120 r / min); S3-2. Crush and homogenize the animal meat, add plant straw to 2cm, add livestock and poultry manure, mix with a mixer, and then mix with the intermediate product for fermentation. The heat generated on the surface of the fermentation pile is used as the detection basis. When the temperature of the surface 30-40cm exceeds 65℃, turn the pile in a different location. Turn the pile 3 times to obtain the preliminary fermented material. S3-3. The initial fermented material is fermented in a concentrated manner. When the temperature in the center of the inner layer of the pile rises to 55℃, the pile is turned over in a different location. This process is repeated until the total water exchange volume of the fermented material reaches 30wt%, and the fermented material is obtained. S4. The modified carrier and other components are mixed evenly to obtain the biomass long-acting slow-release organic fertilizer used for rapidly constructing a micro-ecosystem. Example 2

[0042] A biomass-based slow-release organic fertilizer for rapidly constructing micro-ecosystems, comprising the following components in parts by weight: 32 samples of livestock and poultry manure 13 servings of animal meat 32 portions of plant straw 1 serving of nutrients 0.5 parts of saccharifying enzyme 0.5 parts of microbial inoculant 7 modified carriers 4 portions of grain scraps 9 parts water; The method for preparing the biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem includes the following steps: S1. Activated carbon was mixed with 65wt% nitric acid and reacted with magnetic stirring at 60 °C for 5 h. After washing and drying, carboxylated activated carbon was obtained. The activated carbon and 65wt% nitric acid are in a mass ratio of 1:13. S2. Using water as a solvent, carboxylated activated carbon, chitosan and polymaleic acid are mixed and heated to 50°C for 2.5 h under the action of EDC activator and NHS activator. The mixture is then filtered, washed and dried to obtain the modified carrier. The mass ratio of the carboxylated activated carbon, chitosan, polymaleic acid, EDC activator, and NHS activator is 3:1:2:0.1:0.2. S3-1. According to the above mass proportions, mix corn flour, soybean flour and water, gelatinize at 100℃ for 20 min, cool to 60℃, add saccharifying enzyme and saccharify for 1 h, then heat to 95℃ to inactivate enzyme for 15 min, cool and add microbial inoculant for aerobic activation for 24 h to obtain intermediate product (aerobic activation conditions are: oxygen concentration of 20.95%, temperature of 35℃, shaking speed of 120 r / min); S3-2. Crush and homogenize the animal meat, add plant straw to 2cm, add livestock and poultry manure, mix with a mixer, and then mix with the intermediate product for fermentation. Use the heat generated on the surface of the fermentation pile as the detection basis. When the temperature of the surface 30-40cm exceeds 65℃, turn the pile in a different location. Turn the pile 3 times to obtain the preliminary fermented material. S3-3. The initial fermented material is fermented in a concentrated manner. When the temperature in the center of the inner layer of the pile rises to 55℃, the pile is turned over in a different location. This process is repeated until the total water exchange volume of the fermented material reaches 30wt%, and the fermented material is obtained. S4. The modified carrier and other components are mixed evenly to obtain the biomass long-acting slow-release organic fertilizer used for rapidly constructing a micro-ecosystem. Example 3

[0043] A biomass-based slow-release organic fertilizer for rapidly constructing micro-ecosystems, comprising the following components in parts by weight: 42 samples of livestock and poultry manure 15 servings of animal meat 32 portions of plant straw 1.2 servings of nutrients 0.5 parts of saccharifying enzyme 0.6 parts of microbial inoculant 8 parts of modified carrier 4 portions of grain scraps 10 parts water; The method for preparing the biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem includes the following steps: S1. Activated carbon was mixed with 65wt% nitric acid and reacted with magnetic stirring at 60 °C for 5 h. After washing and drying, carboxylated activated carbon was obtained. The activated carbon and 65wt% nitric acid are in a mass ratio of 1:13. S2. Using water as a solvent, carboxylated activated carbon, chitosan and polymaleic acid are mixed and heated to 50°C for 2.5 h under the action of EDC activator and NHS activator. The mixture is then filtered, washed and dried to obtain the modified carrier. The mass ratio of the carboxylated activated carbon, chitosan, polymaleic acid, EDC activator, and NHS activator is 3:1:2:0.1:0.2. S3-1. According to the above mass proportions, mix corn flour, soybean flour and water, gelatinize at 100℃ for 20 min, cool to 60℃, add saccharifying enzyme and saccharify for 1 h, then heat to 95℃ to inactivate enzyme for 15 min, cool and add microbial inoculant for aerobic activation for 24 h to obtain intermediate product (aerobic activation conditions are: oxygen concentration of 20.95%, temperature of 35℃, shaking speed of 120 r / min); S3-2. Crush and homogenize the animal meat, add plant straw to 2cm, add livestock and poultry manure, mix with a mixer, and then mix with the intermediate product for fermentation. Use the heat generated on the surface of the fermentation pile as the detection basis. When the temperature of the surface 30-40cm exceeds 65℃, turn the pile in a different location. Turn the pile 3 times to obtain the preliminary fermented material. S3-3. The initial fermented material is fermented in a concentrated manner. When the temperature in the center of the inner layer of the pile rises to 55℃, the pile is turned over in a different location. This process is repeated until the total water exchange volume of the fermented material reaches 30wt%, and the fermented material is obtained. S4. The modified carrier and other components are mixed evenly to obtain the biomass long-acting slow-release organic fertilizer used for rapidly constructing a micro-ecosystem.

[0044] Comparative Example 1 A biomass long-acting slow-release organic fertilizer for rapidly constructing micro-ecosystems. The difference between this comparative example and Example 1 is that steps S1 and S2 are removed, and the modified carrier is replaced by a carrier blend of equal mass. Other components and preparation methods are the same. The carrier blend is obtained by mixing activated carbon, chitosan and polymaleic acid in a mass ratio of 2:1:1.

[0045] Comparative Example 2 A biomass long-acting slow-release organic fertilizer for rapidly constructing micro-ecosystems. The difference between this comparative example and Example 1 is that in step S2, polymaleic acid is replaced by an equal mass of glutamic acid, while the other components and preparation methods are the same.

[0046] Test Example 1 The biomass long-acting slow-release organic fertilizers prepared in Example 1 and Comparative Examples 1-2 for rapidly constructing micro-ecosystems were subjected to performance tests.

[0047] Test method: Planting test: Three strawberry seed samples were planted in a plastic greenhouse. Each sample contained 10 strawberry seeds. Each sample was fertilized with biomass slow-release organic fertilizer for rapidly constructing micro-ecosystems, as described in Example 1 and Comparative Examples 1-2, at a rate of 600 kg / mu. After 4 months, the average plant height and plant width of each group were measured. Ten mature fruits from each group were selected and their average weight was measured. The test results are shown in Table 1.

[0048] Table 1. Performance test results of biomass long-acting slow-release organic fertilizer used in Example 1 and Comparative Examples 1-2 for rapidly constructing micro-ecosystems.

[0049] Table 1 shows that Comparative Example 1, which uses a mixed carrier of unmodified activated carbon, chitosan, and polymaleic acid, did not form a stable structure. The carrier structure was loose and could not effectively support the microbial agent, nor could it effectively improve the soil microenvironment, resulting in low survival rate of the agent, uneven nutrient release, and reduced fertilizer efficiency. Comparative Example 2, which uses glutamic acid to replace polymaleic acid, lost the metal chelating effect of polymaleic acid and could not effectively remove interfering ions in the soil. The poor soil environment affected the activity of the microbial agent and plant absorption, thus resulting in lower fertilizer efficiency than Example 1.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A biomass-based long-acting slow-release organic fertilizer for rapidly constructing micro-ecosystems, characterized in that, The biomass-based slow-release organic fertilizer used for rapidly constructing micro-ecosystems comprises the following components in parts by weight: 50-90 parts biomass 1-3 servings of nutrients Aminoglycoside enzyme 0.5-0.8 parts 0.5-1 part of microbial inoculant 5-8 parts of modified carrier 2-5 portions of grain scraps 8-12 parts water; The modified carrier is obtained by reacting carboxylated activated carbon with chitosan and polymaleic acid.

2. The biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 1, characterized in that, The microbial agent is selected from one or more of Bacillus subtilis, Bacillus licheniformis, actinomycetes, and Trichoderma.

3. The biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 1, characterized in that, The biomass is selected from one or more of livestock and poultry manure, animal meat, and plant straw.

4. The biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 1, characterized in that, The grain scraps are selected from one or more of corn, wheat, and soybeans.

5. The method for preparing biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem as described in any one of claims 1-4, characterized in that, The method for preparing the biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem includes the following steps: S1. Mix activated carbon with nitric acid and heat to react, to obtain carboxylated activated carbon; S2. Carboxylated activated carbon, chitosan and polymaleic acid are mixed and heated to react under the action of an activator to obtain a modified carrier; S3. Ferment the components other than the modified carrier to obtain the fermentation material; S4. The modified carrier is blended with other components to obtain the biomass long-acting slow-release organic fertilizer used for rapidly constructing micro-ecosystems.

6. The method for preparing biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 5, characterized in that, In step S1, the mass ratio of activated carbon to nitric acid is 1-3:12-15.

7. The method for preparing biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 5, characterized in that, In step S2, the mass ratio of the carboxylated activated carbon, chitosan, and polymaleic acid is 3-5:1-3:2-4.

8. The method for preparing biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 5, characterized in that, In step S1, the heating temperature is 50-60℃.

9. The method for preparing biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 5, characterized in that, In step S2, the heating temperature is 50-65℃.

10. The method for preparing biomass long-acting slow-release organic fertilizer for rapidly constructing a micro-ecosystem according to claim 5, characterized in that, In step S2, the activator is selected from EDC activator and NHS activator.

Images