Preparation process of water-soluble organic fertilizer

Abstract

The invention provides a preparation technology of a water-soluble organic fertilizer, and relates to the technical field of fertilizer preparation, and the preparation technology comprises the following steps: 1, determining a basic preparation parameter adaptation rule of each fermentation broth through an experiment; step 2, determining fermentation process adaptation rules through experiments before mass production of each fermentation broth; step 3, respectively preparing fermentation broth according to the formula of the water-soluble organic fertilizer, wherein the fermentation broth is prepared according to the required key component parameters, the basic preparation parameter adaptation rule and the fermentation process adaptation rule of the corresponding fermentation broth; and step 4, mixing and stirring all the fermentation liquids to prepare the water-soluble organic fertilizer. The technical parameters for preparing the fermentation liquor can be preliminarily and rapidly matched and determined according to the special basic parameter adaptation rule of each fermentation liquor and the required key component parameters of the fermentation liquor, and the technical parameters of the fermentation liquor are further adjusted in combination with the special fermentation process parameters, so that the preparation efficiency and quality are ensured.

Description

Technical Field

[0001] This invention relates to the field of fertilizer preparation technology, specifically to a preparation process for a water-soluble organic fertilizer. Background Technology

[0002] Water-soluble organic fertilizer is an organic fertilizer that can completely dissolve in water. It is characterized by rapid nutrient release and high absorption and utilization rates, making it suitable for irrigation methods such as drip irrigation and sprinkler irrigation. Water-soluble organic fertilizer is typically made from organic matter such as animal and plant residues and human and animal excrement through processes such as fermentation, composting, and extraction. It contains abundant humic acid, amino acids, organic matter, and trace elements.

[0003] Existing water-soluble organic fertilizer preparation processes, such as the water-soluble organic fertilizer production method in CN103601538A, have the following problems: before preparing the fermentation liquid, only a wide range of proportions of each plant component is determined based on experiments, without determining a method to adjust the process parameters according to product requirements and the actual state of the raw materials, which leads to fluctuations in product quality and may result in the product quality failing to meet the requirements. Summary of the Invention

[0004] This invention provides a process for preparing water-soluble organic fertilizer to solve the technical problems mentioned in the background.

[0005] To solve the above-mentioned technical problems, this invention discloses a preparation process for water-soluble organic fertilizer, comprising: Step 1: Determine the adaptation rules for the basic preparation parameters of each fermentation broth through experiments; Step 2: Before mass production of each fermentation broth, the adaptation rules for the fermentation process were determined through experiments; Step 3: Prepare fermentation broth according to the water-soluble organic fertilizer formula, and prepare the fermentation broth according to the required key component parameters, basic preparation parameter adaptation rules and fermentation process adaptation rules of the corresponding fermentation broth; Step 4: Mix and stir all the fermentation liquids to obtain water-soluble organic fertilizer.

[0006] Preferably, the key fermentation broth parameter is the concentration of the key components in the fermentation broth; The basic preparation parameter adaptation rule is the "material-liquid ratio range - fermentation agent-material ratio range - key fermentation liquid parameters" adaptation rule, and the fermentation process adaptation rule is the fermentation time corresponding to the fermentation detection parameters - the trend line of the baseline fermentation detection parameters; Fermentation detection parameters include pH.

[0007] Preferably, the fermentation liquid includes: corn fermentation liquid and pea fermentation liquid.

[0008] Preferably, the mass ratio of corn fermentation liquid to pea fermentation liquid in water-soluble organic fertilizer is 1:(0.5-2).

[0009] Preferably, step 3 includes: Step 31: Determine the matching material-to-liquid ratio range and the matching fermentation agent-to-material ratio range based on the required key component parameters of the current fermentation broth and the corresponding basic preparation parameter adaptation rules; Step 32: Divide the fermentation stages according to the fermentation process adaptation rules corresponding to the current fermentation broth, and determine the baseline initial effective pH change rate of the initial adaptation stage and the baseline pH change rate and baseline organic acid production rate of the active fermentation stage according to the fermentation process adaptation rules corresponding to the current fermentation broth after the division. Step 33: Determine the metabolic intensity coefficient of the current fermentation broth by combining the pH change rate, organic acid production rate, and baseline hydrolysis or solubility of the marker substrate for the active fermentation stage corresponding to the current fermentation broth. Step 34: Crush the plant raw materials in the current fermentation broth, and determine the pre-corrected fermentation agent-to-material ratio of the current fermentation broth by combining the actual degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth with the metabolic intensity coefficient determined in Step 33. Step 35: Prepare the raw materials for the current fermentation broth according to the benchmark material-liquid ratio and the pre-corrected fermentation agent material ratio corresponding to the matching material-liquid ratio range, mix the raw materials for the current fermentation broth to prepare the current fermentation broth, and determine the actual initial effective pH change rate in the initial adaptation stage by pH detection; The comparison between the actual initial effective pH change rate and the corresponding baseline initial effective pH change rate determines whether it is necessary to supplement the fermentation agent, and the final fermentation agent-to-material ratio is determined in conjunction with the baseline pH change rate during the active fermentation stage. Step 36: When it is necessary to replenish the inoculant, replenish the inoculant according to the final fermentation inoculant-to-material ratio and continue fermentation.

[0010] Preferably, the fermentation stages include: initial adaptation stage, active fermentation stage, and product stabilization stage.

[0011] Preferably, the process for determining the baseline initial effective pH change rate includes: Extract the sub-trend line corresponding to the initial adaptation stage of the trend line of fermentation time-benchmark fermentation detection parameters, and then divide the sub-trend line into multiple adaptation segments according to the fermentation time; The duration of each adaptation segment is continuous, and the slope fluctuation coefficient of each adaptation segment is less than the preset value. Based on the fermentation time in ascending order, a slope sequence is constructed from the average slope of each adaptation segment. A continuous subsequence with an average slope standard deviation less than the preset standard deviation is determined. The average slope of the first adaptation segment of the continuous subsequence is taken as the baseline initial effective pH change rate for the initial adaptation stage. The fermentation time at the end of the first adaptation segment of the continuous subsequence is taken as the target fermentation time.

[0012] Preferably, between steps 2 and 3, the method further includes: constructing an initial conductivity ratio range - initial pH difference range - basic ratio adaptation rule through experiments; Step 4 includes: Step 41: Detect the conductivity and pH of corn fermentation broth and pea fermentation broth respectively, determine the initial conductivity ratio and initial pH difference, and determine the matching basic ratio by combining the initial conductivity ratio range - initial pH difference range - basic ratio adaptation rule; Step 42: Add corn fermentation liquid and pea fermentation liquid to the mixing container according to the preset ratio and matching basic ratio of the total mass of water-soluble organic fertilizer for a single mixing and mix until evenly mixed; Step 43: Detect the conductivity and pH of the mixture obtained in Step 42; determine the synergistic dissolution coefficient based on conductivity, and determine the pH deviation coefficient based on pH; Step 44: If either the synergistic dissolution coefficient or the pH deviation coefficient does not meet the corresponding coefficient requirements, then the compensation ratio is determined by combining the synergistic dissolution coefficient and the pH deviation coefficient. The addition rates of corn fermentation liquid and pea fermentation liquid are determined based on the time after uniform mixing in step 41, the baseline uniform mixing time, the baseline corn fermentation liquid addition rate, and the compensated ratio. Step 45: Add corn fermentation liquid and pea fermentation liquid at the same rate as corn fermentation liquid addition and pea fermentation liquid addition, and stir until the total mass of water-soluble organic fertilizer for a single mixing is reached.

[0013] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0014] Compared with existing technology, the present invention has the following advantages: Before mass production, the specific basic parameter adaptation rules for each fermentation broth are determined through experiments, which can accurately adapt to the physicochemical properties of different raw materials. Based on the specific basic parameter adaptation rules for each fermentation broth and the required key component parameters of the fermentation broth, the process parameters for preparing the fermentation broth can be initially and quickly adapted and determined. Combined with the specific fermentation process parameters, the process parameters of the fermentation broth are further adjusted to achieve accurate adaptation with the required key component parameters, basic preparation parameter adaptation rules, and fermentation process parameters during actual preparation, ensuring the stable and reliable quality of the prepared fermentation broth. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the process of the present invention. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0018] The present invention provides the following embodiments: Example 1: This embodiment of the invention provides a process for preparing water-soluble organic fertilizer, such as... Figure 1 As shown, it includes: Step 1: Determine the adaptation rules for the basic preparation parameters of each fermentation broth through experiments; Step 2: Before mass production of each fermentation broth, the adaptation rules for the fermentation process were determined through experiments; Step 3: Prepare fermentation broth according to the water-soluble organic fertilizer formula, and prepare the fermentation broth according to the required key component parameters, basic preparation parameter adaptation rules and fermentation process adaptation rules of the corresponding fermentation broth; Step 4: Mix and stir all the fermentation liquids to obtain water-soluble organic fertilizer.

[0019] For each formal production / mass production, only steps 3 and 4 need to be executed. Among them, the key fermentation broth parameters are the concentrations of key components in the fermentation broth.

[0020] The basic preparation parameter adaptation rule is the "material-liquid ratio range - fermentation agent-material ratio range - key fermentation broth parameters" adaptation rule, and the fermentation process adaptation rule is the fermentation time corresponding to the fermentation detection parameters - the trend line of the baseline fermentation detection parameters. The fermentation agent-material ratio is the ratio of the mass of the fermentation agent to the corresponding plant raw material; the material-liquid ratio range is the ratio of the mass of the plant raw material to the mass of water. The fermentation liquid includes corn fermentation liquid and pea fermentation liquid; the ratio of corn fermentation liquid to pea fermentation liquid is 1:(0.5-2). The raw materials for corn fermentation broth are: 5-20 parts corn; 20-30 parts water; 0.1-2 parts corn fermentation inoculant; after soaking and fermenting for 12-72 hours, the solid particles are filtered out to obtain corn fermentation broth. The raw materials for pea fermentation broth are: 5-20 parts peas; 20-30 parts water; 0.1-1.5 parts pea fermentation inoculant; soak and ferment for 12-72 hours, then filter out solid particles to obtain pea fermentation broth; The concentrations of key components in the fermentation broth are as follows: total nitrogen 10-15 g / L, total phosphorus 15-20 g / L, total potassium 45-60 g / L in the corn fermentation broth, and humic acid 45-60 g / L, soluble sugar 20-30 g / L, amino acids 5-10 g / L, vitamins 0.5-2 g / L, lactic acid 0-1.2 g / L, indoleacetic acid 1-3 g / L, and salicylic acid 3-6 g / L in the corn fermentation broth.

[0021] The concentrations of key components in the fermentation broth are as follows: total nitrogen 25-40 g / L, total phosphorus 0.5-1.5 g / L, total potassium 3-6 g / L, humic acid 2-8 g / L, soluble sugar 1.5-3.5 g / L, polyglutamic acid 35-45 g / L, lactic acid 0-1 g / L, acetic acid 1-1.5 g / L, succinic acid 1.5-2.5 g / L, and vitamins 0.1-5 g / L.

[0022] This invention is based on research into the quality and efficiency aspects of practical production applications, and identifies a rapid adaptation and adjustment method applicable to actual formal production processes.

[0023] In this embodiment, the basic preparation parameter adaptation rule is the "material-liquid ratio range - fermentation agent-material ratio range - key fermentation liquid parameters" adaptation rule (which can be an association table). For each plant material with inherent characteristics (such as fiber content, moisture content, and organic matter type), multiple gradient experiments of material-liquid ratio and fermentation agent-material ratio were conducted to determine the corresponding fermentation efficiency and key component concentration. The combination of material-liquid ratio range and fermentation agent-material ratio range for achieving the desired dissolution requirements (e.g., fiber residue less than 20%) and key nutrients (such as soluble organic matter) was determined to constitute the above-mentioned adaptation rules. In this embodiment, the fermentation process adaptation rule is the trend line (curve or broken line) of fermentation time corresponding to the fermentation detection parameters and the baseline fermentation detection parameters.

[0024] For each material-liquid ratio range and fermentation agent-material ratio range combination in the basic preparation parameter adaptation rules, select raw materials that meet the characteristics of the plant raw materials (e.g., corn straw requires a fiber content ≥60%), conduct experiments, and detect the actual fermentation detection parameters during the experimental process to determine the trend line (curve or broken line) of fermentation time-baseline fermentation detection parameters. Fermentation detection parameters include pH, and may also include organic acid content, etc. The beneficial effects of the above technical solution are as follows: Before mass production, the specific basic parameter adaptation rules for each fermentation broth are determined through experiments, which can accurately adapt to the physicochemical properties of different raw materials. Based on the specific basic parameter adaptation rules for each fermentation broth and the required key component parameters of the fermentation broth, the process parameters for preparing the fermentation broth can be initially and quickly adapted and determined. Combined with the specific fermentation process parameters, the process parameters of the fermentation broth are further adjusted to achieve accurate adaptation with the required key component parameters, basic preparation parameter adaptation rules, and fermentation process parameters during actual preparation, ensuring the stable and reliable quality of the prepared fermentation broth.

[0025] Example 2, based on Example 1, step 3 includes: Step 31: Determine the matching material-to-liquid ratio range and the matching fermentation agent-to-material ratio range based on the required key component parameters of the current fermentation broth and the corresponding basic preparation parameter adaptation rules; Based on the key component parameters required by the current fermentation broth, the material-to-liquid ratio range (i.e., the matching material-to-liquid ratio range, where the material-to-liquid ratio is the weight of plant raw materials to the weight of water) and the fermentation agent-to-material ratio range (i.e., the matching fermentation agent-to-material ratio range; the weight of fermentation agent is the weight of plant raw materials) are determined from the basic preparation parameter adaptation rules. Step 32: Divide the fermentation stages according to the fermentation process adaptation rules corresponding to the current fermentation broth, and determine the baseline initial effective pH change rate of the initial adaptation stage and the baseline pH change rate and baseline organic acid production rate of the active fermentation stage according to the fermentation process adaptation rules corresponding to the current fermentation broth after the division. Step 33: Determine the metabolic intensity coefficient of the current fermentation broth by combining the pH change rate, organic acid production rate, and baseline hydrolysis or solubility of the marker substrate for the active fermentation stage corresponding to the current fermentation broth. Step 34: Crush the plant raw materials in the current fermentation broth, and determine the pre-corrected fermentation agent-to-material ratio of the current fermentation broth by combining the actual degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth with the metabolic intensity coefficient determined in Step 33. Step 35: Prepare the raw materials for the current fermentation broth according to the benchmark raw material-liquid ratio (midpoint of the matching raw material-liquid ratio range) and the pre-corrected fermentation agent-material ratio, and mix the raw materials for the current fermentation broth to prepare the current fermentation broth. Determine the actual initial effective pH change rate in the initial adaptation stage by pH detection (determined by multiple detections when the fermentation time reaches the target fermentation time). The comparison between the actual initial effective pH change rate and the corresponding baseline initial effective pH change rate determines whether it is necessary to supplement the fermentation agent, and the final fermentation agent-to-material ratio is determined in conjunction with the baseline pH change rate during the active fermentation stage. Step 36: When it is necessary to replenish the inoculant, replenish the inoculant according to the final fermentation inoculant-to-material ratio and continue fermentation.

[0026] The fermentation stages include: the initial adaptation stage, the active fermentation stage, and the product stabilization stage.

[0027] The process for determining the baseline initial effective pH change rate includes: Extract the sub-trend line corresponding to the initial adaptation stage of the trend line of fermentation time-benchmark fermentation detection parameters, and then divide the sub-trend line into multiple adaptation segments according to the fermentation time; The duration of each adaptation segment is continuous, and the slope fluctuation coefficient of each adaptation segment is less than a preset value (e.g., 0.1). Based on the fermentation time in ascending order, a slope sequence is constructed from the average slope of each adaptation segment. A continuous subsequence with an average slope standard deviation less than a preset standard deviation (e.g., 0.005 pH / h) is identified. The average slope of the first adaptation segment of the continuous subsequence is taken as the baseline initial effective pH change rate for the initial adaptation stage. The fermentation time at the end of the first adaptation segment of the continuous subsequence is taken as the target fermentation time. The adaptation rule for the fermentation process is the trend line of fermentation time corresponding to the fermentation detection parameters minus the baseline fermentation detection parameters (such as pH).

[0028] The fermentation stages include: the initial adaptation stage (the early stage of fermentation, from the stage when microorganisms adapt to the environment to the stage before the stage of rapid microbial reproduction and metabolism), the active fermentation stage (the stage when microorganisms reproduce and metabolize rapidly), and the product stabilization stage (the stage when microbial metabolism slows down and product concentration tends to stabilize).

[0029] The baseline pH change rate and baseline organic acid production rate during the active fermentation stage are respectively the average pH change rate and average organic acid production rate during the active fermentation stage in the corresponding fermentation process adaptation rules. The slope fluctuation coefficient is: (maximum slope - minimum slope) ÷ minimum slope; The degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth: When the fermentation broth is corn fermentation broth, the characteristic substrate of corn fermentation broth is starch, corresponding to the degree of starch hydrolysis; when the fermentation broth is pea fermentation broth, the characteristic substrate of pea fermentation broth is soybean meal protein, corresponding to the degree of protein solubility. The metabolic intensity coefficient of the current fermentation broth = (the baseline organic acid production rate of the active fermentation stage of the current fermentation broth ÷ the theoretical maximum value of the organic acid production rate of the current fermentation broth) × (the baseline degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth ÷ the theoretical maximum degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth) ÷ (the baseline fermentation agent-to-material ratio of the current fermentation broth ÷ the maximum allowable fermentation agent-to-material ratio of the current fermentation broth). The theoretical maximum value of the organic acid production rate of the current fermentation broth, such as the theoretical maximum value of the organic acid production rate of corn fermentation broth, such as 3.0 g / L·h; "Baseline organic acid production rate of the active fermentation stage of the current fermentation broth ÷ theoretical maximum organic acid production rate of the current fermentation broth" reflects the relative strength of acid production capacity; "Baseline degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth ÷ theoretical maximum degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth" reflects the sufficiency of available nutrients. The higher the metabolic intensity coefficient of the fermentation broth, the higher the efficiency of microorganisms in producing organic acids (the core product of fermentation) under the current inoculum and nutrient conditions. The current pre-corrected fermentation agent-to-material ratio of the fermentation broth = Match the median of the fermentation agent-to-substrate ratio range × [1 + fermentation agent-to-substrate ratio compensation coefficient × (actual degree of hydrolysis or solubility of the current fermentation broth's marker substrate ÷ baseline degree of hydrolysis or solubility of the current fermentation broth's marker substrate) × actual metabolic intensity coefficient of the current fermentation broth]; The fermentation inoculum-to-substrate ratio compensation coefficient is an empirical coefficient obtained through experimental fitting: under different conditions of "actual metabolic intensity coefficient of the current fermentation broth × (actual degree of hydrolysis or solubility of the current fermentation broth's characteristic substrate ÷ baseline degree of hydrolysis or solubility of the current fermentation broth's characteristic substrate)", the actual fermentation inoculum-to-substrate ratio (pre-corrected fermentation inoculum-to-substrate ratio) that allows the fermentation efficiency and fermentation effect to meet the requirements is tested, and the result of the pre-corrected fermentation inoculum-to-substrate ratio - the median value of the matching fermentation inoculum-to-substrate ratio interval is obtained, and linear fitting is performed to obtain the coefficient.

[0030] In corn fermentation broth, the compensation coefficient for the ratio of fermentation agent to substrate is taken as 0.2 to 0.3; In pea fermentation broth, the compensation coefficient for the ratio of fermentation inoculum to substrate is taken as 0.3 to 0.4; If the actual initial effective pH change rate is less than the baseline initial effective pH change rate, then fermentation inoculum needs to be added. Final fermentation inoculum ratio = pre-corrected fermentation inoculum ratio × (baseline initial effective pH change rate ÷ actual initial effective pH change rate) × (baseline pH change rate during active fermentation phase ÷ actual initial effective pH change rate) × active phase correction ratio coefficient. The active phase correction ratio is used to reduce the influence of (the baseline pH change rate during the active fermentation phase ÷ the actual initial effective pH change rate). Based on experiments, it is determined that (the baseline pH change rate during the active fermentation phase ÷ the actual initial effective pH change rate) × active phase correction ratio is close to 1, and can be taken as 0.55 to 0.7. The beneficial effects of the above technical solution are as follows: By dividing the process into an initial adaptation stage, an active fermentation stage, and a product stabilization stage, and matching the baseline initial effective pH change rate for the initial adaptation stage with the baseline pH change rate and baseline organic acid production rate for the active fermentation stage, the actual preparation process can be adapted to the metabolic characteristics of microorganisms at different stages, ensuring the fermentation effect.

[0031] In this embodiment, it is applied to the actual formal preparation process, for each preparation. In the actual preparation process, such as single-container preparation, the pre-corrected fermentation agent-to-material ratio is quickly determined by combining the actual degree of hydrolysis of the substrate, metabolic intensity coefficient, and compensation coefficient, so that the amount of agent is precisely matched with the substrate and microbial requirements, ensuring the fermentation effect. Step 35 enables rapid detection of the actual initial effective pH change rate during the initial preparation of the pre-corrected fermentation agent-to-material ratio within a short period of time, and determines whether additional agent is needed based on the actual initial effective pH change rate during the initial adaptation phase. It also provides precise compensation based on the actual initial effective pH change rate during the initial adaptation phase and the current pH step state of the agent (reference pH change rate during active fermentation phase ÷ actual initial effective pH change rate) to ensure that the fermentation effect meets the requirements.

[0032] Example 3, based on Example 1 or 2, further includes the following step between step 2 and step 3: constructing an initial conductivity ratio range - initial pH difference range - basic ratio adaptation rule through experiments; Step 4 includes: Step 41: Detect the conductivity and pH of corn fermentation broth and pea fermentation broth respectively, determine the initial conductivity ratio and initial pH difference, and determine the matching basic ratio by combining the initial conductivity ratio range - initial pH difference range - basic ratio adaptation rule; Step 42: Add corn fermentation liquid and pea fermentation liquid to the mixing container according to the preset ratio and matching basic ratio of the total mass of water-soluble organic fertilizer for a single mixing and mix until evenly mixed; Step 43: Detect the conductivity and pH of the mixture obtained in Step 42; determine the synergistic dissolution coefficient based on conductivity, and determine the pH deviation coefficient based on pH; Step 44: If either the synergistic dissolution coefficient or the pH deviation coefficient does not meet the corresponding coefficient requirements, then the compensation ratio is determined by combining the synergistic dissolution coefficient and the pH deviation coefficient. The addition rates of corn fermentation liquid and pea fermentation liquid are determined based on the time after uniform mixing in step 41, the baseline uniform mixing time, the baseline corn fermentation liquid addition rate, and the compensated ratio. Step 45: Add corn fermentation liquid and pea fermentation liquid at the same rate as corn fermentation liquid addition and pea fermentation liquid addition, and stir until the total mass of water-soluble organic fertilizer for a single mixing is reached.

[0033] In step 41: Initial conductivity ratio = conductivity of corn fermentation broth detected in step 41 ÷ conductivity of pea fermentation broth detected in step 41; Initial pH difference = pH of corn fermentation broth detected in step 41 - pH of pea fermentation broth detected in step 41; The matching rule for the initial conductivity ratio range - initial pH difference range - basic ratio is as follows: if the initial conductivity ratio range is 0.8 to 1.2 and the initial pH difference range is 0 to 0.5, the corresponding basic ratio is 1:1. The basic ratio, under the conditions of the corresponding initial conductivity ratio range and initial pH difference range, can meet the key mixing requirements of water-soluble organic fertilizer. The key mixing requirements of water-soluble organic fertilizer include: the retention rate of effective components such as nitrogen, phosphorus, and potassium after mixing meets the preset requirements; the pH and conductivity of the mixed solution meet the requirements, etc. In step 42: The preset ratio is 0.1 to 0.3; Maintaining the mixing temperature during the mixing process meets the ideal mixing temperature (e.g., 25-30℃, which can ensure the activity of the fermentation broth and promote uniform mixing). The total mass of a single mixing, such as the total mass of corn fermentation liquid and pea fermentation liquid mixed in a single mixing container; for example, if the total mass of a single mixing in the container is 200kg, the preset ratio is 0.2, and the matching basic ratio is 1:1, then step 42 is to add 20kg of corn fermentation liquid and 20kg of pea fermentation liquid for mixing. Uniform mixing refers to stable pH and stable conductivity. Examples of pH stability are as follows: the pH difference at each test point is less than or equal to the first difference (e.g., 0.3 for a certain mixing requirement), and the average pH of all test points is taken; the standard deviation of the average value of several consecutive tests is less than or equal to the first standard deviation (e.g., 0.1 for a certain mixing requirement). The following is an example of stable conductivity: the difference in conductivity at each point in each test is less than or equal to the second difference (e.g., a requirement of 0.2 mS / cm for a certain mixture), and the average conductivity of all points in each test is taken; the standard deviation of the average value of several consecutive tests is less than or equal to the second standard deviation (e.g., a requirement of 0.05 mS / cm for a certain mixture). In steps 43 and 44: The synergistic dissolution coefficient is: the conductivity of the mixture obtained in step 43 ÷ (the conductivity of the corn fermentation broth detected in step 41 + the conductivity of the pea fermentation broth detected in step 41). The pH deviation coefficient is: (pH of the mixture obtained in step 42 - median of the ideal pH range of the mixture) ÷ median of the ideal pH range of the mixture; The conductivity of the fermentation broth is related to the concentration of nutrients (ionic nitrogen, phosphorus, potassium, etc.). If the nutrients in the corn fermentation broth and pea fermentation broth are completely dissolved without precipitation / complexation, the conductivity of the mixed broth should be close to the conductivity of the corn fermentation broth detected in step 41 plus the conductivity of the pea fermentation broth detected in step 41, and the co-dissolution coefficient should be close to 1. The co-dissolution coefficient is required to be in the range of 0.9 to 1.1. Water-soluble organic fertilizers have a fixed ideal pH range, such as 5.5 to 7.5, with a median of 6.5. This range is determined by pH deviation and adjusted accordingly to avoid large pH deviations affecting the fertilizer's effectiveness. The pH deviation coefficient should be less than 7%.

[0034] In step 44: The basic ratio for matching is: mass of corn fermentation liquid : mass of pea fermentation liquid = 1 : b; The compensated ratio is: corn fermentation liquid mass : pea fermentation liquid mass = 1 : c; ÷ (1 + first proportional correction factor × cooperative deviation factor + second proportional correction factor pH deviation factor). The synergistic deviation coefficient reflects the nutrient dissolution deviation, and the pH deviation coefficient reflects the acidity / alkalinity deviation. When the nutrient dissolution deviation and pH deviation coefficient are larger, the proportion of pea fermentation liquid should be reduced accordingly, because the pH of pea fermentation liquid is relatively high (and the composition of corn fermentation liquid is more stable), so the proportion of pea fermentation liquid should be adjusted. Synergistic deviation coefficient = (synergistic dissolution coefficient determined in step 43 - median value of the required range of synergistic coefficient) ÷ median value of the required range of synergistic coefficient; The first proportional correction coefficient (valued at 0.8 to 1.2) and the second proportional correction coefficient (valued at 0.5 to 1) are determined based on experiments: the synergistic deviation coefficient (or pH deviation coefficient) is fixed, the pH deviation coefficient (or synergistic deviation coefficient) is adjusted to determine the proportion that meets the key mixing requirements of water-soluble organic fertilizer (corresponding to the compensated proportion), and the first proportional correction coefficient is determined by fitting. Specifically, the addition rates of corn fermentation broth and pea fermentation broth are determined based on the time after uniform mixing in step 41, the baseline uniform mixing time, the baseline addition rate, and the compensated ratio. The time after mixing is uniform refers to the absolute value of the time difference from the start of stirring to the point of uniform mixing; The baseline mixing time and baseline addition rate are the actual mixing time and addition rate corresponding to the baseline test process, and the baseline test results are used as the baseline. The baseline addition rate is as follows; there is no precipitation or stratification after mixing; the retention rates of effective components such as nitrogen, phosphorus, and potassium meet the preset requirements after uniform mixing; the pH and conductivity of the mixture meet the requirements, etc. For small-scale mixing (single container total mass 50-200kg), the corn fermentation liquid addition rate can be 0.5kg / min-1.5kg / min; Corn fermentation broth addition rate = baseline corn fermentation broth addition rate × (baseline mixing time ÷ time after mixing in step 41); if the actual mixing speed is slow, the addition rate is adjusted to match the current actual fermentation state. Corn fermentation broth addition rate: Pea fermentation broth addition rate = compensated ratio; The beneficial effects of the above technical solution are as follows: By controlling the synergistic dissolution coefficient, it is ensured that the nutrients in the fermentation broth exist almost entirely in ionic form, avoiding the impact of nutrient precipitation and binding on the fertilizer's nutrient status. By controlling the pH, damage to crop roots due to unsuitable pH is avoided, and the activity of functional components in the fertilizer (such as humic acid) is also guaranteed.

[0035] Due to differences in raw materials such as corn and peas, as well as differences in the activity of fermentation agents, fluctuations may occur during a single mixing process. When nutrient dissolution or pH deviation occurs, the proportion of pea fermentation liquid can be precisely adjusted based on the synergistic deviation coefficient and pH deviation coefficient. This allows for the rapid determination of the compensated proportion, bringing the mixing quality back to the acceptable range. The above controls ensure that each mixing is reliable and do not require cumbersome testing experiments.

[0036] By combining the initial conductivity ratio range, the initial pH difference range, and the basic ratio adaptation rule to determine the matching basic ratio, the basic ratio can be determined quickly and accurately. In actual single mixing, a small amount of mixing and testing is first performed using the basic ratio. Then, the ratio is adaptively adjusted based on the test results, and the addition rate of the fermentation broth suitable for the current mixing is matched for mixing the remaining fermentation broth, ensuring the efficiency and quality of single mixing.

[0037] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A preparation process for a water-soluble organic fertilizer, characterized in that: include: Step 1: Determine the adaptation rules for the basic preparation parameters of each fermentation broth through experiments; Step 2: Before mass production of each fermentation broth, the adaptation rules for the fermentation process were determined through experiments; Step 3: Prepare fermentation broth according to the water-soluble organic fertilizer formula, and prepare the fermentation broth according to the required key component parameters, basic preparation parameter adaptation rules and fermentation process adaptation rules of the corresponding fermentation broth; Step 4: Mix and stir all the fermentation liquids to obtain water-soluble organic fertilizer.

2. The preparation process of a water-soluble organic fertilizer according to claim 1, characterized in that: Key fermentation broth parameters are the concentrations of key components in the fermentation broth; The basic preparation parameter adaptation rule is the "material-liquid ratio range - fermentation agent-material ratio range - key fermentation liquid parameters" adaptation rule, and the fermentation process adaptation rule is the fermentation time corresponding to the fermentation detection parameters - the trend line of the baseline fermentation detection parameters; Fermentation detection parameters include pH.

3. The preparation process of a water-soluble organic fertilizer according to claim 1, characterized in that: The fermentation broth includes: corn fermentation broth and pea fermentation broth.

4. The preparation process of a water-soluble organic fertilizer according to claim 3, characterized in that: The mass ratio of corn fermentation liquid to pea fermentation liquid in water-soluble organic fertilizer is 1:(0.5-2).

5. The preparation process of a water-soluble organic fertilizer according to claim 3, characterized in that: Step 3 includes: Step 31: Determine the matching material-to-liquid ratio range and the matching fermentation agent-to-material ratio range based on the required key component parameters of the current fermentation broth and the corresponding basic preparation parameter adaptation rules; Step 32: Divide the fermentation stages according to the fermentation process adaptation rules corresponding to the current fermentation broth, and determine the baseline initial effective pH change rate of the initial adaptation stage and the baseline pH change rate and baseline organic acid production rate of the active fermentation stage according to the fermentation process adaptation rules corresponding to the current fermentation broth after the division. Step 33: Determine the metabolic intensity coefficient of the current fermentation broth by combining the pH change rate, organic acid production rate, and baseline hydrolysis or solubility of the marker substrate for the active fermentation stage corresponding to the current fermentation broth. Step 34: Crush the plant raw materials in the current fermentation broth, and determine the pre-corrected fermentation agent-to-material ratio of the current fermentation broth by combining the actual degree of hydrolysis or solubility of the characteristic substrate of the current fermentation broth with the metabolic intensity coefficient determined in Step 33. Step 35: Prepare the raw materials for the current fermentation broth according to the benchmark material-liquid ratio and the pre-corrected fermentation agent material ratio corresponding to the matching material-liquid ratio range, mix the raw materials for the current fermentation broth to prepare the current fermentation broth, and determine the actual initial effective pH change rate in the initial adaptation stage by pH detection; The comparison between the actual initial effective pH change rate and the corresponding baseline initial effective pH change rate determines whether it is necessary to supplement the fermentation agent, and the final fermentation agent-to-material ratio is determined in conjunction with the baseline pH change rate during the active fermentation stage. Step 36: When it is necessary to replenish the inoculant, replenish the inoculant according to the final fermentation inoculant-to-material ratio and continue fermentation.

6. The preparation process of a water-soluble organic fertilizer according to claim 5, characterized in that: The fermentation stages include: the initial adaptation stage, the active fermentation stage, and the product stabilization stage.

7. The preparation process of a water-soluble organic fertilizer according to claim 5, characterized in that: The process for determining the baseline initial effective pH change rate includes: Extract the sub-trend line corresponding to the initial adaptation stage of the trend line of fermentation time-baseline fermentation detection parameters, and then divide the sub-trend line into multiple adaptation segments according to the fermentation time; The duration of each adaptation segment is continuous, and the slope fluctuation coefficient of each adaptation segment is less than the preset value. Based on the fermentation time in ascending order, a slope sequence is constructed from the average slope of each adaptation segment. A continuous subsequence with an average slope standard deviation less than the preset standard deviation is determined. The average slope of the first adaptation segment of the continuous subsequence is taken as the baseline initial effective pH change rate for the initial adaptation stage. The fermentation time at the end of the first adaptation segment of the continuous subsequence is taken as the target fermentation time.

8. The preparation process of a water-soluble organic fertilizer according to claim 1, characterized in that: Between steps 2 and 3, the following is also included: constructing an initial conductivity ratio range - initial pH difference range - basic ratio adaptation rule through experiments; Step 4 includes: Step 41: Detect the conductivity and pH of corn fermentation broth and pea fermentation broth respectively, determine the initial conductivity ratio and initial pH difference, and determine the matching basic ratio by combining the initial conductivity ratio range - initial pH difference range - basic ratio adaptation rule; Step 42: Add corn fermentation liquid and pea fermentation liquid to the mixing container according to the preset ratio and matching basic ratio of the total mass of water-soluble organic fertilizer for a single mixing and mix until evenly mixed; Step 43: Detect the conductivity and pH of the mixture obtained in Step 42; determine the synergistic dissolution coefficient based on conductivity, and determine the pH deviation coefficient based on pH; Step 44: If either the synergistic dissolution coefficient or the pH deviation coefficient does not meet the corresponding coefficient requirements, then the compensation ratio is determined by combining the synergistic dissolution coefficient and the pH deviation coefficient. The addition rates of corn fermentation liquid and pea fermentation liquid are determined based on the time after uniform mixing in step 41, the baseline uniform mixing time, the baseline corn fermentation liquid addition rate, and the compensated ratio. Step 45: Add corn fermentation liquid and pea fermentation liquid at the same rate as corn fermentation liquid addition and pea fermentation liquid addition, and stir until the total mass of water-soluble organic fertilizer for a single mixing is reached.

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