Preparation method of liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation

Abstract

The invention discloses a preparation method of a liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation. The preparation method comprises the following steps: pre-treating a manure raw material, and stacking into strip stacks; carrying out aerobic fermentation on the windrow excrement raw material to obtain a fermented solid fertilizer; loading the fermented solid fertilizer into a first tank body, and soaking the fermented solid fertilizer; within the soaking time, mixing and stirring the fermented solid fertilizer and the extract liquid to obtain a solid-liquid mixture; carrying out dry-wet separation on the solid-liquid mixture, and filling the separated liquid into a second tank body to form a primary liquid organic fertilizer; after the primary liquid organic fertilizer is precipitated in the second tank body, the primary liquid organic fertilizer is pumped into the third tank body to form a finished product liquid organic fertilizer. The livestock and poultry manure is subjected to pretreatment and aerobic fermentation, the fertility of the fertilizer can be guaranteed, a foundation can be laid for subsequent liquification, and the livestock and poultry manure is converted into the liquid organic fertilizer capable of being subjected to drip irrigation through subsequent extraction, stirring, precipitation and other processes so as to adapt to the drip irrigation technology.

Description

Technical Field

[0001] This application relates to the field of organic fertilizer preparation technology, and in particular to a method for preparing liquid drip irrigation organic fertilizer based on the fermentation of livestock and poultry manure. Background Technology

[0002] Animal manure has been used as a traditional source of organic fertilizer in agricultural production for thousands of years, but its utilization has long been significantly flawed.

[0003] Traditionally, untreated manure is applied directly to the fields, causing harmful substances such as viruses, weed seeds, and pests carried in the manure to enter the soil, leading to frequent crop diseases and rampant weed growth. At the same time, the secondary fermentation of unfermented manure in the soil can easily cause root and seedling burn, resulting in losses for farmers. Furthermore, some farmers will pile up the manure and reuse it the following spring. This method still carries a high risk of damaging crops due to incomplete fermentation.

[0004] Although some factories use mechanical rapid fermentation technology (such as 7-8 hours of high-temperature fermentation) to prepare manure into granular organic fertilizer, which quickly kills some harmful substances through high temperature, short-time fermentation cannot cultivate a large number of beneficial bacteria, resulting in a significant decline in fertilizer quality and efficiency.

[0005] On the other hand, with the nationwide promotion of drip irrigation water-saving technology, traditional granular organic fertilizers are difficult to adapt due to insufficient fermentation and poor water solubility, resulting in limited use. Therefore, most liquid drip irrigation fertilizers on the domestic market are made from amino acids, humic acid, fish protein, seaweed mud, etc., while drip irrigation liquid organic fertilizers made from livestock and poultry manure after thorough fermentation are still a blank. There is an urgent need for a liquid organic fertilizer preparation method that can efficiently utilize livestock and poultry manure, adapt to drip irrigation technology, and take into account fertilizer efficiency. Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.

[0007] To achieve the above objectives, the first aspect of this application proposes a method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation, comprising: S100, pre-treating manure raw materials and piling them into windrows; performing aerobic fermentation on the windrow manure raw materials to obtain fermented solid fertilizer; loading the fermented solid fertilizer and extract into a first tank at a volume ratio of 1:2-1:3 and soaking for 48±4 hours; during the soaking time, mixing and stirring the fermented solid fertilizer and extract in the first tank according to a preset stirring strategy to obtain a solid-liquid mixture; separating the solid-liquid mixture into dry and wet components, and loading the separated liquid into a second tank to form primary liquid organic fertilizer; after the primary liquid organic fertilizer has settled in the second tank for 10-14 hours, it is pumped into a third tank using a suction pump to form finished liquid organic fertilizer.

[0008] In addition, the liquid drip irrigation organic fertilizer preparation method based on livestock and poultry manure fermentation proposed in this application may also have the following additional technical features:

[0009] As a further description of the above technical solution: the process of pre-treating the fecal raw material and piling it into strips includes: adjusting the moisture content of the fecal raw material to 55%-65%; mixing the fecal raw material and the fermentation agent in an alternating layered spreading manner; and piling the mixed fecal raw material into long strips that are 1-2 meters high and 2-3 meters wide.

[0010] As a further description of the above technical solution: the manure raw material is one or more mixtures of livestock and poultry manure.

[0011] As a further description of the above technical solution: the aerobic fermentation of the windrow manure raw material to obtain fermented manure includes: covering the windrow manure raw material with aeration, leaving aeration height on both sides of the bottom of the windrow along its length; after 3-5 days of aeration, inserting a long rod thermometer into the windrow manure raw material to measure the temperature, and turning the windrow manure raw material when the temperature reaches 60-70℃; repeating the S202 operation 3-4 times to obtain fermented solid fertilizer.

[0012] As a further description of the above technical solution: During the soaking time, the fermented solid fertilizer and the extract in the first tank are mixed and stirred according to a preset stirring strategy to obtain a solid-liquid mixture, which includes: three stirrers are set in the first tank, and the stirrers mix and stir the fermented solid fertilizer and the extract at a speed of 70 rpm for 10 minutes; the operation of S401 is repeated once every 6 hours until the required soaking time is reached.

[0013] As a further description of the above technical solution: the extract is a composite solution of water, microbial agent and enzyme preparation.

[0014] As a further description of the above technical solution: the solid-liquid mixture is subjected to dry-wet separation, and the separated liquid is loaded into a second tank to form primary liquid organic fertilizer, including: the solid-liquid mixture in the first tank is pumped into the dry-wet separator by a suction pump for solid-liquid separation; the separated liquid is filtered through a 100-mesh filter screen and enters the second tank to form primary liquid organic fertilizer; the separated solid residue is granulated and used as granular organic fertilizer.

[0015] As a further description of the above technical solution: the first tank, the second tank and the third tank are all long tanks with a length of 6 meters, a width of 2.4 meters and a height of 1.4 meters.

[0016] According to the method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation of this application, by pre-treating and aerobically fermenting livestock and poultry manure, not only can the viruses and harmful substances in the manure be reduced, ensuring the fertility of the fertilizer, but also the originally insoluble crude fiber, protein and other organic matter can be decomposed into small molecules, laying the foundation for subsequent liquefaction. Through subsequent processes such as extraction, stirring and sedimentation, livestock and poultry manure is transformed into drip irrigation liquid organic fertilizer to be adapted to drip irrigation technology, thereby saving water resources and promoting green and sustainable agricultural development.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of a liquid drip irrigation organic fertilizer preparation method based on livestock and poultry manure fermentation according to an embodiment of this application; Detailed Implementation

[0020] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0021] The following describes, with reference to the accompanying drawings, a method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to an embodiment of this application.

[0022] like Figure 1 As shown, the liquid drip irrigation organic fertilizer preparation method based on livestock and poultry manure fermentation in this application embodiment may include step S100, which involves pre-treating the manure raw material and then piling it into windrows, wherein the manure raw material is one or more mixtures of livestock and poultry (e.g., chicken, sheep, pig, cattle, etc.) manure.

[0023] Specifically, the above steps include S101, adjusting the moisture content of the fecal raw material to 55%-65%.

[0024] It should be noted that the relevant staff will adjust the moisture content of the livestock and poultry manure to about 60% by drying it or adding an appropriate amount of water. The ideal state is that it can be squeezed into a ball by hand but crumbles when touched with the ground.

[0025] Step S102: Mix the manure raw materials and fermentation agents by alternately spreading them in layers.

[0026] It is understandable that when mixing manure raw materials and fermentation agents, a layer of manure raw materials is spread out, followed by a layer of fermentation agent, and so on, stacking them repeatedly.

[0027] As one possible scenario, when mixing the manure raw material and the fermentation agent, the manure raw material and the fermentation agent can be mixed at a mass ratio of 1000:3.

[0028] It should be noted that the fermentation agent is a commercially available product containing multiple functional microbial groups such as Bacillus subtilis and Thermophilus laterosporus. Among them, Bacillus subtilis in the fermentation agent secretes extracellular enzymes (such as cellulase, protease, and amylase) to decompose large organic molecules such as crude fiber, protein, and starch in feces into small molecules such as glucose and amino acids, thereby shortening the subsequent fermentation cycle and improving the release efficiency of water-soluble nutrients such as nitrogen, phosphorus, and potassium. Meanwhile, Thermophilus laterosporus can dominate lignin degradation at high temperatures, destroy the plant cell wall structure, release the encapsulated nutrients, improve the organic matter conversion rate, reduce fecal viscosity, and enhance the subsequent solid-liquid separation effect.

[0029] Step S103: Pile the mixed manure raw materials into a stack 1-2 meters high, 2-3 meters wide, and of unlimited length.

[0030] The pre-treated manure material is spread layer by layer in a "serpentine path" or "square path" manner. The thickness of each layer of manure material is controlled at 15-20 cm, and the total number of layers does not exceed 10, so as to avoid the central material being compacted due to excessive pile height.

[0031] It should be noted that windrows with a height of less than 1 meter will cause the pile to dissipate heat too quickly, affecting the temperature maintenance during the high-temperature fermentation stage; windrows with a height of more than 2 meters are prone to material compaction due to excessive internal pressure, which hinders air permeability. Considering the natural settling rate of the material during fermentation, in order to ensure that the pile height can still be maintained above 1.2 meters at the end of fermentation and meet the operating space of the subsequent turning machinery, the windrow height can be stacked to 1.5 meters.

[0032] Step S200: Aerobic fermentation of the windrow manure raw material to obtain fermented solid fertilizer.

[0033] Specifically, the above-mentioned operation to obtain fermented solid fertilizer includes S201, covering the windrow manure raw material with aeration, and reserving aeration height on both sides of the bottom of the windrow along its length.

[0034] It should be noted that after the windrow stacking is completed in step S100, the windrows are covered with plastic sheeting, but ventilation space should be reserved on both sides of the bottom of the windrow along its length (for example, about 30 cm above the ground), and the plastic sheeting should not be completely sealed.

[0035] Understandably, covering with plastic sheeting can reduce excessive moisture evaporation inside the windrows and maintain the humidity environment required for fermentation. The ventilation spaces reserved on both sides at the bottom ensure that air can enter the windrows, meeting the oxygen requirements of aerobic fermentation. Beneficial microorganisms can only multiply in aerobic environments, thereby efficiently decomposing the organic matter in the feces and generating heat, achieving sterilization and composting effects. If the covering is too tight and leads to oxygen deficiency, anaerobic microorganisms will grow, producing foul odors and failing to completely decompose harmful substances, affecting the quality of fermentation.

[0036] Step S202: After ventilating and covering for 3-5 days, use a long rod thermometer to measure the temperature inside the windrow manure material. If the temperature reaches 60-70℃, turn the windrow manure material over.

[0037] It should be noted that within 3-5 days after the breathable covering, the temperature inside the windrow begins to rise due to the decomposition of organic matter by microorganisms. At this time, the staff will use a long rod thermometer to insert into different positions of the windrow (such as the center, middle, and edge) to measure the temperature. When the temperature rises to the range of 60-70℃, the windrow will be turned over by a forklift, turning the material at the bottom and edge of the windrow to the top and center, and turning the material at the top and center to the bottom and edge.

[0038] Understandably, temperatures of 60-70℃ can effectively kill harmful substances such as viruses, insect eggs, and weed seeds remaining in the feces, while also inhibiting the growth of miscellaneous bacteria. Turning the pile allows the materials inside and outside the windrow to be heated and exposed to oxygen evenly. Since the temperature is highest at the center of the windrow and lower at the edges during fermentation, turning the pile allows the materials at the edges, which were originally at a lower temperature, to enter the high-temperature zone in the center, ensuring that all materials can undergo the high-temperature sterilization stage. At the same time, turning the pile can break up material clumps, increase permeability, avoid local oxygen deficiency that could lead to fermentation stagnation, and ensure that organic matter is fully decomposed.

[0039] Step S203: Repeat step S202 3-4 times to obtain fermented solid fertilizer.

[0040] It should be noted that after each turning, the pile is covered with plastic sheeting again, leaving room for ventilation at the bottom to continue fermentation. The temperature is measured again 3-5 days later. When the temperature rises back to 60-70℃, the turning operation is repeated. This cycle is repeated 3-4 times. The entire fermentation process lasts about 15 days, and finally, a fermented solid fertilizer with no foul odor, loose texture, and a faint grassy smell is obtained.

[0041] After multiple turnings to ensure uniform fermentation of the manure raw materials, and 3-4 temperature monitoring and turnings, all materials in the windrows undergo thorough high-temperature sterilization and microbial decomposition, completely removing harmful substances such as viruses, pests, and weed seeds. After a fermentation cycle of about 15 days, sufficient time is provided for the reproduction of beneficial microorganisms, which can play a role in nitrogen fixation, phosphorus solubilization, and absorption promotion in subsequent crop growth, thereby improving fertilizer efficiency.

[0042] Step S300: According to the volume ratio of fermented solid fertilizer to extract liquid of 1:2-1:3, put it into the first tank and soak it for 48±4 hours.

[0043] It should be noted that the solid organic fertilizer raw materials that have been fully fermented in the S200 step are evenly loaded into the first tank by a forklift to ensure that the raw materials are evenly distributed in the tank. The extract is added to the first tank according to the required volume ratio (for example, after loading 5 cubic meters of fermented solid fertilizer into the first tank, 12 cubic meters of extract is poured into the first tank) so that the fermented solid fertilizer is completely covered by the extract. The soaking time is controlled at 48±4 hours.

[0044] Prolonged soaking provides sufficient time for the nutrients in solid fertilizers (such as small-molecule organic matter, amino acids, nitrogen, phosphorus, potassium and trace elements produced by fermentation) to dissolve. After fermentation, the organic matter in solid organic fertilizers has been decomposed into small molecules, making it easier to dissolve or disperse in the liquid. Sufficient soaking time can maximize the transfer efficiency of nutrients to the extract.

[0045] As one possibility, the extract is a composite solution of water, microbial agents, and enzyme preparations.

[0046] The amount of microbial preparation added is 0.05-0.1% of the mass of clean water, and the amount of enzyme preparation added is 0.01-0.02% of the mass of clean water.

[0047] It should be noted that microbial agents can further decompose and ferment the insoluble organic matter remaining in solid fertilizers, such as incompletely decomposed cellulose and lignin, and convert them into water-soluble small molecules. On the other hand, the microbial community multiplies in the extract to form a stable microbial community, which can improve the soil micro-ecological environment and promote the absorption of nutrients by crop roots when applied to the soil.

[0048] Enzyme preparations mainly include cellulase and protease. Their function is to accelerate the decomposition efficiency of organic matter through biocatalytic reactions. For example, cellulase can destroy the cellulose structure in plant residues, and protease can break down proteins into amino acids, thereby allowing the nutrients in fermented solid fertilizer to be released into the extract more quickly and thoroughly during the soaking process, shortening the time cost of nutrient dissolution and improving the extraction efficiency.

[0049] Thus, water provides the dissolving medium, enzyme preparations accelerate the decomposition of macromolecules through catalysis, and microbial agents continuously decompose insoluble substances and proliferate beneficial bacteria, together achieving the effect of rapid dissolution.

[0050] Step S400: During the soaking time, the fermented solid fertilizer and extract in the first tank are mixed and stirred according to the preset stirring strategy to obtain a solid-liquid mixture.

[0051] Specifically, the above-mentioned steps for obtaining the solid-liquid mixture include step S401, in which three stirrers are installed in the first tank, and the stirrers mix and stir the fermented solid fertilizer and the extract at a speed of 70 rpm for 10 minutes.

[0052] As one possible scenario, the first tank is a long tank with a length of 6 meters, a width of 2.4 meters, and a height of 1.4 meters. Three agitators are evenly arranged along the length of the first tank to ensure that the materials in different areas inside the first tank can be fully agitated, avoiding local material sedimentation or uneven mixing. In particular, it allows the fermented solid fertilizer to come into full contact with the extract, promoting the transfer of nutrients from solid to liquid.

[0053] It should be noted that a slow stirring speed of 70 rpm can avoid material splashing or excessive shearing damage to nutrients caused by excessive speed, while ensuring sufficient mixing force so that the microbial agents, enzymes and solid fertilizers in the extract can fully interact and accelerate the decomposition and dissolution of insoluble components.

[0054] Step S402: Repeat step S401 every 6 hours until the required soaking time is reached.

[0055] It should be noted that during the 48±4 hours soaking process, the stirring operation in step S401 is repeated every 6 hours, that is, the three stirrers are stirred at a speed of 70 rpm for 10 minutes, and the cycle is repeated until the soaking is completed, finally forming a uniform solid-liquid mixture.

[0056] It can be understood that timed and repeated stirring can break the static stratification of materials during the soaking process. As the soaking time goes on, the solid fertilizer sinks due to gravity, and timed stirring can redisperse it into the extract, ensuring that nutrients continue to dissolve and avoiding local concentrations that are too high or too low.

[0057] Step S500: The solid-liquid mixture is separated into dry and wet components. The separated liquid is then placed into a second tank to form primary liquid organic fertilizer.

[0058] Specifically, the steps for forming primary liquid organic fertilizer include S501, using a suction pump to draw the solid-liquid mixture in the first tank into a dry-wet separator for solid-liquid separation.

[0059] After step S400 completes soaking and multiple stirrings, a uniform solid-liquid mixture is formed in the first tank. At this time, the suction pump is started to pump the solid-liquid mixture from the first tank to the dry-wet separator. The mechanical separation action of the separator is used to separate the liquid from the solid residue in the solid-liquid mixture.

[0060] Step S502: The separated liquid is filtered through a 100-mesh filter and enters the second tank to form primary liquid organic fertilizer.

[0061] It should be noted that the liquid initially separated by the dry-wet separator is further filtered through a 100-mesh filter to remove residual fine solid particles or suspended matter, ensuring the fluidity and purity of the liquid fertilizer. The clarified liquid after filtration is directly transported to the second tank, which is the primary liquid organic fertilizer. The primary liquid organic fertilizer can meet the basic requirements of liquid fertilizer for drip irrigation.

[0062] Step S503: The solid residue after separation is granulated and used as granular organic fertilizer.

[0063] Understandably, although the solid residue is not completely dissolved in the liquid, it still contains abundant organic matter, beneficial bacteria, and slow-release nutrients. After granulation, it can be used as a base fertilizer in the field to achieve full utilization of resources and avoid waste.

[0064] Step S600: After the primary liquid organic fertilizer has settled in the second tank for 10-14 hours, it is pumped into the third tank using a suction pump to form the finished liquid organic fertilizer.

[0065] It should be noted that although the primary liquid organic fertilizer already meets the basic requirements for liquid fertilizer used in drip irrigation, in order to meet the requirements of its aesthetics and moderate viscosity, a sedimentation process is used. This process allows the tiny suspended solids in the primary liquid organic fertilizer (such as incompletely decomposed fiber fragments and colloidal particles) to naturally settle to the bottom of the tank under gravity. The upper liquid becomes clear and transparent. After removing the sediment, the liquid fertilizer has a uniform color and no obvious impurities. The viscosity of the upper liquid is reduced, and it has better fluidity, so as to avoid the clogging of the drip irrigation head during subsequent drip irrigation.

[0066] In summary, the liquid drip irrigation organic fertilizer preparation method based on livestock and poultry manure fermentation according to the embodiments of this application, through pretreatment and aerobic fermentation of livestock and poultry manure, can not only reduce viruses and harmful substances in the manure and ensure the fertility of the fertilizer, but also decompose the originally insoluble crude fiber, protein and other organic matter into small molecules, laying the foundation for subsequent liquefaction. Through subsequent processes such as extraction, stirring and sedimentation, livestock and poultry manure is transformed into drip-irrigated liquid organic fertilizer to adapt to drip irrigation technology, thereby saving water resources and promoting green and sustainable agricultural development.

[0067] Fermentation of animal manure allows for the effective utilization of waste manure. Through dry-wet separation, high-quality solid organic fertilizer is transformed into widely applicable liquid drip irrigation organic fertilizer. This not only greatly improves production efficiency but also, due to the use of animal manure as raw material, effectively improves the increasingly deteriorating soil environment, reduces land pollution, and enhances the environmental protection and safety of crops through widespread field application. It also responds to the national call for reducing fertilizer use and increasing efficiency, and makes a due contribution to our country's food safety.

[0068] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation, characterized in that, include: S100. After pretreatment, the fecal raw material is stacked into windrows. S200: Aerobic fermentation of windrow manure raw materials to obtain fermented solid fertilizer; S300, according to the volume ratio of fermented solid fertilizer to extract liquid of 1:2-1:3, put it into the first tank and soak for 48±4 hours; S400. During the soaking time, the fermented solid fertilizer and extract in the first tank are mixed and stirred according to the preset stirring strategy to obtain a solid-liquid mixture. S500: The solid-liquid mixture is separated into dry and wet components. The separated liquid is then loaded into a second tank to form primary liquid organic fertilizer. After the S600 primary liquid organic fertilizer settles in the second tank, it is pumped into the third tank using a suction pump to form the finished liquid organic fertilizer.

2. The method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to claim 1, characterized in that, The process of pre-treating fecal raw materials and then stacking them into windrows includes: S101. Adjust the moisture content of the fecal raw material to 55%-65%; S102. Mix the manure raw materials and fermentation agents by alternately spreading them in layers; S103. The mixed manure raw materials are piled up into long stacks 1-2 meters high and 2-3 meters wide.

3. The method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to claim 1, characterized in that, The manure raw material is one or more mixtures of livestock and poultry manure.

4. The method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to claim 1, characterized in that, The aerobic fermentation of the windrow manure raw materials to obtain fermented manure includes: S201. The manure raw material in the windrow is covered with a breathable cover, and a breathable space is reserved on both sides of the bottom of the windrow along its length. S202. After 3-5 days of ventilation and covering, use a long rod thermometer to measure the temperature inside the windrow manure material. If the temperature reaches 60-70℃, turn the windrow manure material over. S203. Repeat S202 3-4 times to obtain fermented solid fertilizer.

5. The method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to claim 1, characterized in that, During the soaking time, the fermented solid fertilizer and the extract in the first tank are mixed and stirred according to a preset stirring strategy to obtain a solid-liquid mixture, including: S401. The agitator is used to mix the fermented solid fertilizer and the extract at a speed of 70 rpm for 10 minutes. S402. Repeat step S401 every 6 hours until the required soaking time is reached.

6. The method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to claim 1, characterized in that, The extract is a composite solution of water, microbial agents, and enzyme preparations.

7. The method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to claim 1, characterized in that, The solid-liquid mixture is subjected to dry-wet separation. The separated liquid is then placed into a second tank to form primary liquid organic fertilizer, including: S501. The solid-liquid mixture in the first tank is drawn into the dry-wet separator by a suction pump for solid-liquid separation. S502. The separated liquid is filtered through a 100-mesh filter and enters the second tank to form primary liquid organic fertilizer. S503. The solid residue after separation is granulated and used as granular organic fertilizer.

8. The method for preparing liquid drip irrigation organic fertilizer based on livestock and poultry manure fermentation according to claim 1, characterized in that, The first tank, the second tank, and the third tank are all long tanks with a length of 6 meters, a width of 2.4 meters, and a height of 1.4 meters.

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