Production process of water-soluble efficient foliar fertilizer containing amino acid

Abstract

The invention relates to the technical field of fertilizer preparation, in particular to a preparation process of a water-soluble efficient foliar fertilizer containing amino acid. The method comprises the following steps: compounding an amino acid raw material and an element additive, and treating to obtain an aqueous solution; performing biological treatment on the aqueous solution, and mixing with an interfacial agent to obtain a mixed solution; and introducing the mixed solution into a stirring device, fully stirring, standing to remove impurities, adding an adhesive and a wetting agent, uniformly mixing, and fixing the volume to prepare the foliar fertilizer. According to the invention, after the amino acid raw material and the manganese-zinc additive are compounded, the material which is convenient to absorb by crops and contains amino acids and oligopeptides of the amino acids is obtained through the steps of biological treatment and the like, and the amino acid raw material is animal-derived amino acids; compared with a foliar fertilizer prepared from a plant source amino acid raw material, the amino acid-containing water-soluble fertilizer obtained through treatment has relatively strong biological activity, and can improve enzyme activity, stimulate growth and development of crops and enhance disease resistance and stress resistance.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizer production, in particular to a production process of a water-soluble high-efficiency foliar fertilizer containing amino acids. Background Art

[0002] Foliar fertilizer refers to fertilizer containing fast-acting nutrients and is specially designed for spraying on crop leaves. Crop leaves absorb nutrients quickly and are often used to correct nutrient deficiency symptoms of crops. Adhesives and wetting agents must be added when preparing foliar fertilizer to increase the adhesion and residence time of the fertilizer on the leaves, thereby improving the utilization rate of the fertilizer.

[0003] For example, CN1218782A relates to a formula of an amino acid composite foliar fertilizer and a preparation method thereof, which uses a composite amino acid obtained by hydrolysis of plant raw materials as a raw material, and obtains a fast-acting, high-efficiency, and long-lasting foliar fertilizer containing 18 kinds of amino acids, nitrogen, phosphorus, potassium, trace elements, B vitamins, and algae substances through fermentation, synthesis, and the addition of additives. The foliar fertilizer is not only easy to use and inexpensive, but also pollution-free and non-toxic. Although the foliar fertilizer has a low cost and is simple to use, it has not been improved in terms of promoting plant absorption of fertilizers. The low fertilizer utilization rate makes it impossible for the applied foliar fertilizer to be completely absorbed by the plant, resulting in waste.

[0004] In order to promote the absorption of fertilizer by plants and improve the utilization rate of fertilizer, a process for preparing high-efficiency foliar fertilizer containing amino acid aqueous solution is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a process for preparing a water-soluble and efficient foliar fertilizer containing amino acids, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides a process for preparing a water-soluble and efficient foliar fertilizer containing amino acids, comprising the following steps:

[0007] S1, compounding the amino acid raw material and the element additive, pre-treating the compound, and then soaking and neutralizing the compound with a hydrochloric acid solution to obtain an amino acid-containing aqueous solution;

[0008] S2, subjecting the aqueous solution containing amino acids to biological treatment to obtain a fermentation liquid, and mixing the fermentation liquid with a surfactant to obtain a mixed liquid;

[0009] S3, passing the mixed solution into a stirring device for sufficient stirring, and then allowing it to stand to obtain a mother liquor containing impurities;

[0010] S4, after removing impurities, adding adhesive and wetting agent to the stirring device and mixing, and fixing the volume to prepare foliar fertilizer;

[0011] In S1, the pretreatment is to heat the compounded amino acid raw material, and the heating temperature is 95-115°C.

[0012] As a further improvement of the present technical solution, in S1, the amino acid raw material is animal-derived amino acids, and the element additive is an additive containing manganese and zinc elements.

[0013] As a further improvement of the technical solution, in S1, the heating temperature is 100°C, 105°C, or 110°C.

[0014] As a further improvement of the present technical solution, in S2, the biological treatment is to first subject the aqueous solution containing amino acids to a de-impurity treatment to remove impurities generated during the soaking and neutralization process, thereby increasing the purity of the amino acids in the aqueous solution, and then introduce a cell mixed enzyme solution into the aqueous solution for an enzymatic hydrolysis reaction, and then filter to obtain the fermentation broth after the biological treatment is completed.

[0015] As a further improvement of the technical solution, the cell mixed enzyme solution is a yeast somatic cell mixed solution containing yeast somatic cells and polypeptide enzymes.

[0016] As a further improvement of the technical solution, in S2, the surfactant is one of sodium dodecylbenzene sulfonate or sodium 1-octyl sulfonate, and the content of the surfactant in the mixed solution is 2-9%.

[0017] As a further improvement of the technical solution, the content of the surfactant in the mixed liquid is 3%, 5%, or 8%.

[0018] As a further improvement of the present technical solution, the stirring device includes a stirring box, a stirring body and a sedimentation body for collecting impurities and arranged in the stirring box are provided at the bottom of the stirring box, a sedimentation chamber for impurity deposition is opened at the bottom of the stirring box, feeding pipes for feeding are connected to both ends of the top of the stirring box, the stirring body includes a motor arranged at the top of the stirring box, a stirring rod for stirring is provided on the surface of the driving shaft of the motor, and the sedimentation body includes a lower frame located in the sedimentation chamber, and an upper frame is plugged into and matched with the top of the lower frame.

[0019] As a further improvement of the technical solution, an air groove is provided on the side wall of the mixing box, the bottom end of the air groove opens toward the bottom of the edge of the upper frame, the lower frame and the upper frame are both provided with a first through groove, a lower baffle is provided in the middle of the upper frame, the bottom of the lower baffle passes through the middle of the lower frame, and a stopper is provided on the edge of the lower baffle.

[0020] As a further improvement of the technical solution, a contact groove is provided at a position corresponding to the bottom of the upper frame edge and the bottom opening of the air groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the production process of the water-soluble and efficient foliar fertilizer containing amino acids, the amino acid raw material is compounded with manganese and zinc element additives, and then subjected to heating pretreatment and biological treatment to obtain a material containing amino acids and short peptides thereof that is easy for crops to absorb. The amino acid raw material is animal-derived amino acids. The water-soluble amino acid fertilizer obtained after treatment has stronger biological activity than the foliar fertilizer prepared from plant-derived amino acid raw materials, and can improve enzyme activity, stimulate crop growth and development, and enhance disease resistance and stress resistance.

[0023] 2. In the production process of the amino acid-containing water-soluble high-efficiency foliar fertilizer, a sedimentation body is provided so that impurities generated after stirring and standing can enter the sedimentation chamber and be deposited. After the impurities in the sedimentation chamber are removed through the discharge pipe provided on the stirring box, other raw materials are added through the feeding pipe and the above process is repeated. This can avoid the re-mixing of the deposited impurities with the raw materials, reduce additional impurity removal processes, and thus reduce the cost of fertilizer production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall flow chart of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 3 It is the overall cross-sectional structure diagram of the present invention;

[0027] Figure 4 It is a cross-sectional structural diagram of a mixing box of the present invention;

[0028] Figure 5 It is a schematic diagram of the stirring body structure of the present invention;

[0029] Figure 6 It is a cross-sectional structural diagram of the precipitate of the present invention;

[0030] Figure 7 It is a schematic diagram of fertilizer absorption rate of the present invention;

[0031] Figure 8 Schematic diagram of surface tension of the present invention.

[0032] The meaning of each number in the figure is:

[0033] 100, stirring device; 110, stirring box; 111, sedimentation chamber; 112, feeding pipe; 113, air tank; 120, stirring body; 121, motor; 122, driving shaft; 123, stirring rod; 130, sedimentation body; 131, lower frame; 132, upper frame; 133, first through groove; 134, lower baffle; 135, stopper; 136, contact groove. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Example 1

[0038] See also Figure 1-Figure 6 As shown, the purpose of this embodiment is to provide a process for preparing a water-soluble and efficient foliar fertilizer containing amino acids, comprising the following steps:

[0039] S1. Compounding the amino acid raw material and the element additive, pre-treating the compound, and then soaking and neutralizing with a hydrochloric acid solution to obtain an amino acid aqueous solution, wherein the amino acid raw material is an animal-derived amino acid, and the element additive is an additive containing manganese and zinc elements, mainly hair, leather, fish meal and slaughterhouse scraps, etc. Animal-derived amino acids are used as amino acid raw materials, and a water-soluble fertilizer containing amino acids can be obtained through subsequent biological fermentation treatment. Compared with foliar fertilizers prepared from plant-derived amino acid raw materials, the water-soluble fertilizer containing amino acids has stronger biological activity, can improve enzyme activity, stimulate crop growth and development, and enhance disease resistance and stress resistance. The combination of the water-soluble fertilizer containing amino acids and the added manganese and zinc elements can effectively regulate crop growth functions and further enhance photosynthetic efficiency, thereby achieving the purpose of increasing production and income. The pretreatment is to heat the compounded amino acid raw materials, and the heating temperature is 95-115°C;

[0040] S2, subjecting the aqueous solution containing amino acids to biological treatment to obtain fermentation liquid, and mixing the fermentation liquid with a surfactant to obtain a mixed solution, wherein the biological treatment is to first subject the aqueous solution containing amino acids to impurity removal treatment to remove impurities such as protein and fat generated during the soaking and neutralization process, and after improving the purity of the amino acids in the aqueous solution, introduce a cell mixed enzyme solution into the aqueous solution for enzymatic hydrolysis, and filter to obtain a fermentation liquid after the biological treatment is completed, the cell mixed enzyme solution is a yeast cell mixed solution containing yeast somatic cells and polypeptide enzymes, and the residual polypeptide substances in the aqueous solution can be decomposed into amino acids and short peptides thereof by adding the yeast somatic cell mixed solution, and the surfactant is one of sodium dodecylbenzene sulfonate or sodium 1-octyl sulfonate, and the content of the surfactant in the mixed solution is 2-9%;

[0041] S3, passing the mixed solution into the stirring device 100 for sufficient stirring, and then allowing it to stand to obtain a mother solution containing impurities;

[0042] S4, after removing the impurities, adding adhesive and wetting agent to the stirring device 100 and mixing, and fixing the volume to prepare foliar fertilizer;

[0043] The stirring device 100 comprises a stirring box 11, wherein a stirring body 12 and a sedimentation body 13 for collecting impurities and arranged in the stirring box 11 are provided at the bottom of the stirring box 11, a sedimentation chamber 111 for impurity deposition is provided at the bottom of the stirring box 11, and feeding pipes 112 for feeding are connected to the two ends of the top of the stirring box 11, the stirring body 12 comprises a motor 121 arranged at the top of the stirring box 11, a driving shaft 122 of the motor 121 passes through the top of the stirring box 11, and a stirring rod 123 for stirring is provided on the surface of the driving shaft 122 located in the stirring box 11, and the sedimentation body 13 comprises a lower frame 131 located in the sedimentation chamber 111, and an upper frame 132 is plugged and matched at the top of the lower frame 131, raw materials are injected into the stirring box 11 through the feeding pipe 112, the motor 121 drives the driving shaft 122 to rotate so that the stirring rod 123 mixes and stirs the input raw materials, and the impurities generated by standing after stirring are settled through the upper frame 132 and the lower frame 131 and fall into the sedimentation chamber 111;

[0044] Furthermore, an air groove 113 is provided on the side wall of the mixing box 11, and the bottom end opening of the air groove 113 faces the bottom end of the edge of the upper frame 132. The lower frame 131 and the upper frame 132 are both provided with a first through groove 133. A lower baffle 134 is provided in the middle of the upper frame 132, and the bottom of the lower baffle 134 passes through the middle of the lower frame 131. A stopper 135 is provided on the edge of the lower baffle 134, and a contact groove 136 is provided at the bottom end of the edge of the upper frame 132 corresponding to the bottom end opening of the air groove 113. When the raw materials are stirred in the mixing box 11, the liquid in the mixing box 11 is stirred by the stirring rod 123, and is continuously thrown from the center of the mixing box 11 to the edge, thereby entering the top end of the air groove 113, and flowing along the air groove 113, and finally sprayed upward from the bottom end opening of the air groove 113, and the sprayed liquid contacts the contact groove 136. And are concentrated in the contact groove 136, which can provide an upward thrust for the upper frame 132, so that the upper frame 132 moves upward, and drives the plug 135 to jam the bottom end of the first through groove 133 of the lower frame 131 through the lower baffle 134. At this time, the liquid in the mixing box 11 cannot enter the sedimentation chamber 111 through the first through groove 133. After the stirring is completed and the liquid is allowed to stand, the fluidity of the liquid is reduced, resulting in a decrease or disappearance of the liquid thrust pushing the upper frame 132 to move upward. At this time, the upper frame 132 moves downward under the action of its own weight, and the plug 135 is separated from the bottom of the lower frame 131. The impurities generated by standing enter the sedimentation chamber 111 through the first through groove 133 and are deposited. After the impurities in the sedimentation chamber 111 are removed through the discharge pipe set on the mixing box 11, other raw materials are added through the feeding pipe 112, and the above process is repeated.

[0045] In this embodiment, the amino acid raw material is compounded with the manganese and zinc element additives, and then subjected to heating pretreatment and biological treatment to obtain a material containing amino acids and short peptides thereof that is easy for crops to absorb. The amino acid raw material is animal-derived amino acids, and the amino acid-containing water-soluble fertilizer obtained after treatment has stronger biological activity than the foliar fertilizer prepared from plant-derived amino acid raw materials, and can improve enzyme activity, stimulate crop growth and development, and enhance disease resistance and stress resistance.

[0046] Example 2

[0047] In agricultural production, the absorption efficiency of crops is a key factor in determining yield and quality. Among nutrients, amino acids and their analogs are of great significance to the growth and development of crops. When crops absorb nutrients through the leaves, their absorption mechanism mainly depends on diffusion and active transport. Under diffusion, small molecule peptides and polypeptides enter crop cells under the action of concentration difference; under active transport, crop cells take small molecule peptides and polypeptides into cells through membrane protein channels or membrane vesicles. Compared with large molecule peptides with larger molecular weight, small molecule peptides have the advantage of faster absorption rate and can diffuse and transport quickly.

[0048] In the above embodiment, the peptide bonds connecting the macromolecular substances in the compounded amino acid raw materials are destroyed by heating pretreatment, and the macromolecular substances are converted into small molecular peptides with smaller molecular weight, thereby improving the absorption rate of fertilizer by crop leaves. In order to explore the relationship between the heating temperature during heating pretreatment and the change of fertilizer absorption rate by crop leaves, and determine the optimal heating temperature during heating pretreatment, this embodiment, based on Example 1, does not change other parameters, only changes the heating temperature during heating pretreatment, prepares fertilizer, and then uses the fertilizer for fertilizing Angelica sinensis, and calculates the absorption rate of fertilizer by Angelica sinensis (absorption rate = (total amount of fertilizer applied - remaining amount of fertilizer) / total amount of fertilizer applied). The heating pretreatment temperature parameters are shown in Table 1, and the fertilizer absorption rate is shown in Table 1. Figure 7 shown.

[0049] Table 1 Heating pretreatment parameters

[0050] Heating temperature / ℃ 100 105 110 Fertilizer absorption rate / % 15.7 16.3 15.4

[0051] According to the chart, when the foliar fertilizer prepared at a heating temperature of 105°C is used for fertilizing Angelica sinensis, the fertilizer absorption rate is higher.

[0052] Example 3

[0053] When applying fertilizer to the leaves of crops, the surface tension of the fertilizer liquid will affect the degree of spreading of the liquid fertilizer on the surface of the crop leaves. If the contact area between the liquid fertilizer and the leaves is small, the crop may not absorb the fertilizer well. Therefore, surfactants are added to the fertilizer to reduce the surface tension of the liquid fertilizer, so that the liquid can spread better on the surface of the leaves, thereby helping the plants absorb pesticides and fertilizers more effectively.

[0054] In order to determine the effects of different surfactant compositions and different content ratios of surfactants in fertilizers on the surface tension of liquid fertilizers, this embodiment, based on Example 1, does not change other parameters, selects sodium dodecylbenzene sulfonate or sodium 1-octyl sulfonate as the surfactant, and changes the content ratio of the surfactant in the fertilizer to prepare the fertilizer, and detects the surface tension of the prepared liquid fertilizer. The selection of surfactants and the content ratio are shown in Table 2. The surface tension of the liquid fertilizer is as follows: Figure 8 shown.

[0055] Table 2 Surfactants and their content

[0056] Group Surfactant ingredients Surfactant content ratio a Sodium dodecylbenzenesulfonate 3％ b Sodium dodecylbenzenesulfonate 5％ c Sodium dodecylbenzenesulfonate 8％ d Sodium 1-octyl sulfonate 3％ e Sodium 1-octyl sulfonate 5％ f Sodium 1-octyl sulfonate 8％

[0057] According to the chart, when the surfactant component is sodium 1-octyl sulfonate and the surfactant content is 5%, the surface tension of the prepared liquid fertilizer is lower.

[0058] Example 4

[0059] This embodiment prepares foliar fertilizer according to the method provided in the above embodiment and the determined optimal parameters, and tests the utilization rate of the foliar fertilizer. The test process is as follows:

[0060] First, representative plant species such as Angelica sinensis and Codonopsis pilosula are selected, and culture soil or culture medium with good growth conditions is selected to make potted plants; the prepared foliar fertilizer is applied to the potted plants and marked; after the plant growth period is over, the plants in the potted plants are taken out, and the content of the labeled element in the marked fertilizer is measured, and the foliar fertilizer utilization rate is measured to be 42.8%. Under the working conditions of this embodiment, the fertilizer utilization rate of the prepared foliar fertilizer is high, which can promote the plant's absorption of fertilizers and reduce fertilizer waste.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A process for preparing a water-soluble and efficient foliar fertilizer containing amino acids, characterized in that: The following steps are involved: S1, compounding the amino acid raw material and the element additive, pre-treating the compound, and then soaking and neutralizing the compound with a hydrochloric acid solution to obtain an amino acid-containing aqueous solution; S2, subjecting the aqueous solution containing amino acids to biological treatment to obtain a fermentation liquid, and mixing the fermentation liquid with a surfactant to obtain a mixed liquid; S3, passing the mixed solution into a stirring device (100) for sufficient stirring, and then allowing the mixed solution to stand to obtain a mother solution containing impurities; S4, after removing the impurities, adding an adhesive and a wetting agent to the stirring device (100) and mixing them evenly, and then fixing the volume to prepare a foliar fertilizer; In S1, the pretreatment is to heat the compounded amino acid raw material, and the heating temperature is 95-115°C.

2. The process for producing the amino acid-containing water-soluble high-efficiency foliar fertilizer according to claim 1, characterized in that: In S1, the amino acid raw material is animal-derived amino acid, and the element additive is an additive containing manganese and zinc elements.

3. The process for producing the amino acid-containing water-soluble high-efficiency foliar fertilizer according to claim 1, characterized in that: In the above S1, the heating temperature is 100°C, 105°C, and 110°C.

4. The process for producing the water-soluble high-efficiency foliar fertilizer containing amino acids according to claim 1, characterized in that: In S2, the biological treatment is to first subject the aqueous solution containing amino acids to a decontamination treatment to remove impurities generated during the soaking and neutralization process, thereby increasing the purity of the amino acids in the aqueous solution, and then introduce a cell mixed enzyme solution into the aqueous solution for enzymatic hydrolysis, and then filter to obtain the fermentation broth after the biological treatment is completed.

5. The process for producing the water-soluble high-efficiency foliar fertilizer containing amino acids according to claim 3, characterized in that: The cell mixed enzyme solution is a yeast somatic cell mixed solution containing yeast somatic cells and polypeptide enzymes.

6. The process for producing the water-soluble high-efficiency foliar fertilizer containing amino acids according to claim 1, characterized in that: In S2, the surfactant is one of sodium dodecylbenzene sulfonate or sodium 1-octyl sulfonate, and the content of the surfactant in the mixed solution is 2-9%.

7. The process for producing the water-soluble high-efficiency foliar fertilizer containing amino acids according to claim 6, characterized in that: The content of the surfactant in the mixed solution is 3%, 5% and 8%.

8. The process for producing the amino acid-containing water-soluble high-efficiency foliar fertilizer according to claim 1, characterized in that: The stirring device (100) comprises a stirring box (11), wherein a stirring body (12) and a sedimentation body (13) for collecting impurities and arranged in the stirring box (11) are provided at the bottom of the stirring box (11), a sedimentation chamber (111) for impurity deposition is provided at the bottom of the stirring box (11), and feeding pipes (112) for feeding are connected to both ends of the top of the stirring box (11), the stirring body (12) comprises a motor (121) arranged at the top of the stirring box (11), a stirring rod (123) for stirring is provided on the surface of a driving shaft (122) of the motor (121), and the sedimentation body (13) comprises a lower frame (131) located in the sedimentation chamber (111), and an upper frame (132) is plugged and matched at the top of the lower frame (131).

9. The process for producing the water-soluble high-efficiency foliar fertilizer containing amino acids according to claim 8, characterized in that: The side wall of the mixing box (11) is provided with an air groove (113), the bottom end of the air groove (113) is opened toward the bottom of the edge of the upper frame (132), the lower frame (131) and the upper frame (132) are both provided with a first through groove (133), a lower baffle (134) is provided in the middle of the upper frame (132), the bottom of the lower baffle (134) passes through the middle of the lower frame (131), and a stopper (135) is provided at the edge of the lower baffle (134).

10. The process for producing the water-soluble high-efficiency foliar fertilizer containing amino acids according to claim 9, characterized in that: A contact groove (136) is provided at a position corresponding to the bottom of the edge of the upper frame (132) and the bottom opening of the air groove (113).

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