Activating agent, monoammonium phosphate as well as preparation method and application of monoammonium phosphate

Abstract

The invention provides an activating agent, monoammonium phosphate as well as a preparation method and application thereof. The activating agent comprises a dissolution promoter, organic acid, an activating agent, an anti-precipitating agent and an auxiliary agent, wherein the dissolution promoting agent is prepared from at least one of hydroxypropyl-beta-cyclodextrin and sulfobutyl-beta-cyclodextrin. Therefore, the activator provided by the invention can effectively activate phosphorus in monoammonium phosphate, reduce water-insoluble substances, improve water solubility and reduce fixation of monoammonium phosphate in soil, and can be applied to irrigation of saline-alkali soil in a large area, improve agricultural efficiency and save resources.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizers, and in particular to an activator, monoammonium phosphate and a preparation method and application thereof. Background Art

[0002] Monoammonium phosphate is a commonly used means of production in agricultural production. It is a nitrogen and phosphorus binary fertilizer and plays a key role in the production of food crops and cash crops. Although my country has a large amount of phosphate resources, low- and medium-grade phosphate mines account for 90%. The production of high-concentration industrial monoammonium phosphate is not conducive to the sustainable development of phosphate resources. However, there are too many impurities in the production process of agricultural monoammonium phosphate, especially in large-scale water-fertilizer integration areas such as Xinjiang saline-alkali land. The water solubility is difficult to meet the requirements of drip irrigation. In addition, phosphorus is easily fixed in the soil and has poor mobility, resulting in low fertilizer phosphorus utilization and poor crop effects, causing resource waste and environmental pollution.

[0003] Therefore, it is urgent to develop a monoammonium phosphate with higher water solubility and phosphorus utilization rate. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art to a certain extent. To this end, the present invention provides an activator, monoammonium phosphate and a preparation method and application thereof. The activator of the present invention can activate phosphorus in monoammonium phosphate, improve the water solubility of monoammonium phosphate, increase the content of water-soluble phosphorus, reduce its water-insoluble matter, reduce its fixation in the soil, and promote the high-quality growth of crops and increase the yield.

[0005] In a first aspect of the present invention, the present invention provides an activator. According to an embodiment of the present invention, the activator comprises: a solubilizing agent, an organic acid, an active agent, an anti-precipitation agent and an auxiliary agent; wherein the solubilizing agent comprises at least one of hydroxypropyl-β-cyclodextrin (HP-β-CD) and sulfobutyl-β-cyclodextrin (SBE-β-CD).

[0006] According to the embodiments of the present invention, the inventors have found through a large number of experiments that using at least one of hydroxypropyl-β-cyclodextrin and sulfobutyl-β-cyclodextrin as a solubilizing agent, and using organic acids, surfactants, anti-precipitants and adjuvants in combination, can effectively activate the phosphorus in monoammonium phosphate, reduce its water-insoluble matter, increase its water solubility, and reduce its fixation in the soil. It can be widely used in saline-alkali land irrigation, improve agricultural efficiency and save resources.

[0007] According to an embodiment of the present invention, the activator may further include at least one of the following additional technical features:

[0008] According to an embodiment of the present invention, the activator comprises: 25-35 parts by weight of a solubilizing agent; 27-30 parts by weight of an organic acid; 23-25 ​​parts by weight of an active agent; 8-10 parts by weight of an anti-precipitation agent; and 7-10 parts by weight of an auxiliary agent.

[0009] According to an embodiment of the present invention, the organic acid includes at least one of citric acid, malic acid, tartaric acid, oxalic acid, and succinic acid.

[0010] According to an embodiment of the present invention, the active agent includes a soluble fluoride salt.

[0011] According to an embodiment of the present invention, the soluble fluoride salt includes at least one of hydrofluoric acid, ammonium fluoride, fluorosilicic acid, and sodium fluoride.

[0012] According to an embodiment of the present invention, the anti-precipitation agent includes at least one of polyepoxysuccinic acid, phosphine carboxylic acid, benzotriazole, sulfonated lignin, polyacrylic acid, hydrolyzed polymaleic anhydride, and acrylic acid-ethyl acrylate-itaconic acid copolymer.

[0013] According to an embodiment of the present invention, the auxiliary agent includes at least one of sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium lignin sulfonate, sodium dodecyl sulfate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, benzylphenol polyoxyethylene ether, and phenethylphenol polyoxyethylene ether.

[0014] In the second aspect of the present invention, the present invention provides a monoammonium phosphate. According to an embodiment of the present invention, the monoammonium phosphate comprises: the activator described in the first aspect and the monoammonium phosphate raw material. As mentioned above, the activator of the present invention can improve the water solubility of the monoammonium phosphate and activate the phosphorus in the monoammonium phosphate. Therefore, the monoammonium phosphate of the present invention has excellent water solubility and a high water-soluble phosphorus (P 2 O 5 ) content, which can improve the utilization efficiency of phosphorus. This improvement not only enhances the fertilizer effect of monoammonium phosphate, but also promotes the high-quality growth and yield increase of crops, and can be widely used in drip irrigation of saline-alkali land.

[0015] According to an embodiment of the present invention, the monoammonium phosphate may further include at least one of the following additional technical features:

[0016] According to an embodiment of the present invention, the monoammonium phosphate further includes a synergist.

[0017] According to an embodiment of the present invention, the monoammonium phosphate comprises: 85-95 parts by weight of a monoammonium phosphate raw material; 3-10 parts by weight of a synergist; and 2-5 parts by weight of an activator.

[0018] According to an embodiment of the present invention, the synergist includes at least one of alginic acid, polyglutamic acid, γ-aminobutyric acid, glycine, serine, and boron.

[0019] According to an embodiment of the present invention, the synergist includes 30-45 parts by weight of alginic acid, 20-25 parts by weight of polyglutamic acid, 20-25 parts by weight of γ-aminobutyric acid, 5-7 parts by weight of glycine, 5-7 parts by weight of serine, and 5-6 parts by weight of boron.

[0020] According to an embodiment of the present invention, the boron element is derived from at least one of sodium tetraborate decahydrate, sodium octaborate tetrahydrate, and boric acid.

[0021] In the third aspect of the present invention, the present invention proposes a method for preparing the monoammonium phosphate described in the second aspect. According to an embodiment of the present invention, the method comprises: performing a first mixing treatment on the activator described in the first aspect and the monoammonium phosphate raw material to obtain a first mixed treatment product; performing a neutralization reaction on the first mixed treatment product and ammonia to obtain a slurry; performing a second mixing treatment on the slurry and the synergist to obtain the monoammonium phosphate. Thus, the monoammonium phosphate prepared by the method of the present invention can reduce the fixation of phosphorus, improve the utilization efficiency of phosphorus in the monoammonium phosphate, and thus improve the effectiveness of phosphate fertilizer.

[0022] In the fourth aspect of the present invention, the present invention proposes the use of the activator described in the first aspect, the monoammonium phosphate described in the second aspect, or the monoammonium phosphate prepared by the method described in the third aspect in cultivating crops or increasing crop yields.

[0023] In a fifth aspect of the present invention, the present invention provides a method for increasing the water-soluble phosphorus content of monoammonium phosphate. According to an embodiment of the present invention, the method comprises: adding the activator described in the first aspect during the preparation of the monoammonium phosphate, or using the monoammonium phosphate described in the second aspect, or the monoammonium phosphate prepared by the method described in the third aspect.

[0024] In a sixth aspect of the present invention, a method for increasing crop yield and promoting crop growth is provided. According to an embodiment of the present invention, the method comprises: applying the monoammonium phosphate described in the second aspect or the monoammonium phosphate prepared by the method described in the third aspect to the crop.

[0025] According to an embodiment of the present invention, the crop includes at least one of cotton, Arabidopsis, rice, corn, wheat, sorghum, barley, oats, rye, soybean, tobacco, rapeseed, and tomato.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0028] It should be noted that 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. Further, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0029] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

[0030] In this document, the terms “include” or “comprising” are open expressions, that is, including the contents specified in the present invention but not excluding other contents.

[0031] As used herein, the terms "optionally", "optional" or "optionally" generally mean that the subsequently described event or circumstance may but need not occur, and that the description includes instances where the event or circumstance occurs and instances where it does not.

[0032] Currently, monoammonium phosphate, a commonly used nitrogen-phosphorus binary fertilizer in agricultural production, has an unsatisfactory utilization rate of phosphorus. The traditional solution is to add synergistic substances to monoammonium phosphate to activate phosphorus and enhance its mobility in the soil. However, due to the limitation of the types of synergists and the shortcomings of existing technologies, the effects of these methods are not obvious, and they have not effectively improved the physical properties of monoammonium phosphate, such as its water solubility. In Xinjiang and other regions, the widespread use of drip irrigation technology has put forward higher requirements on the water solubility of monoammonium phosphate.

[0033] In view of this, the present invention proposes an activator, which aims to improve the activity and mobility of phosphorus, thereby greatly improving the utilization rate of phosphorus. The activator innovatively adds at least one of hydroxypropyl-β-cyclodextrin and sulfobutyl-β-cyclodextrin, which not only improves the water solubility of monoammonium phosphate, but also enhances its applicability under various soil conditions, especially saline-alkali land, and meets the needs of drip irrigation technology. The activator, monoammonium phosphate, and its preparation method and application will be introduced in detail below.

[0034] Activator

[0035] The present invention proposes an activator. According to an embodiment of the present invention, the activator includes: a solubilizing agent, an organic acid, an active agent, an anti-precipitating agent and an auxiliary agent; wherein the solubilizing agent includes at least one of hydroxypropyl-β-cyclodextrin (HP-β-CD) and sulfobutyl-β-cyclodextrin (SBE-β-CD). According to an embodiment of the present invention, the inventors have found through a large number of experiments that the activity of phosphorus in monoammonium phosphate can be improved by using hydroxypropyl-β-cyclodextrin or sulfobutyl-β-cyclodextrin as a solubilizing agent and in conjunction with an organic acid, an active agent, an anti-precipitating agent and an auxiliary agent. This combination not only reduces the water-insoluble content of monoammonium phosphate, but also increases its water solubility, thereby reducing the fixation rate of phosphorus in the soil. These improvements directly promote the high-quality growth of crops and increase crop yields. In addition, the activator of the present invention can be widely used for irrigation of saline-alkali land, which not only improves agricultural efficiency, but also contributes to resource conservation and sustainable utilization.

[0036] In some embodiments of the present invention, the activator comprises: 25-35 parts by weight of a dissolution promoter; 27-30 parts by weight of an organic acid; 23-25 ​​parts by weight of an active agent; 8-10 parts by weight of an anti-precipitation agent; and 7-10 parts by weight of an auxiliary agent. Thus, the activity of phosphorus in monoammonium phosphate can be improved, the water-insoluble content of monoammonium phosphate can be reduced, and its water solubility can be increased, thereby reducing the fixation rate of phosphorus in the soil.

[0037] Illustratively, the weight portion of the dissolution promoter can be 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, etc., or can be a range consisting of any of the above values.

[0038] For example, the weight percentage of the organic acid can be 27, 28, 29, 30, etc., or can be a range consisting of any of the above values.

[0039] Illustratively, the weight portion of the active agent can be 23, 24, 25, etc., or can be a range consisting of any of the above values.

[0040] For example, the weight portion of the anti-precipitation agent can be 8, 9, 10, etc., or can be a range consisting of any of the above values.

[0041] For example, the weight portion of the auxiliary agent can be 7, 8, 9, 10, etc., or can be a range consisting of any of the above values.

[0042] In some embodiments of the present invention, the organic acid includes at least one of citric acid, malic acid, tartaric acid, oxalic acid, and succinic acid.

[0043] In some embodiments of the present invention, the active agent includes a soluble fluoride salt. According to an embodiment of the present invention, the soluble fluoride salt includes at least one of hydrofluoric acid, ammonium fluoride, fluorosilicic acid, and sodium fluoride.

[0044] In some embodiments of the present invention, the anti-precipitation agent includes at least one of polyepoxysuccinic acid, phosphine carboxylic acid, benzotriazole, sulfonated lignin, polyacrylic acid, hydrolyzed polymaleic anhydride, acrylic acid-ethyl acrylate-itaconic acid copolymer.

[0045] In some embodiments of the present invention, the auxiliary agent includes at least one of sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium lignin sulfonate, sodium dodecyl sulfate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, benzylphenol polyoxyethylene ether, and phenethylphenol polyoxyethylene ether.

[0046] Monoammonium phosphate and preparation method thereof

[0047] The present invention provides a monoammonium phosphate. According to an embodiment of the present invention, the monoammonium phosphate includes the above-mentioned activator and a monoammonium phosphate raw material. As mentioned above, the activator of the present invention can improve the water solubility of the monoammonium phosphate and activate the phosphorus in the monoammonium phosphate. Therefore, the monoammonium phosphate of the present invention has excellent water solubility and a high water-soluble phosphorus (P 2 O 5 ) content, which can improve the utilization efficiency of phosphorus. This improvement not only enhances the fertilizer effect of monoammonium phosphate, but also promotes the high-quality growth and yield increase of crops, and can be applied to drip irrigation in saline-alkali land on a large scale. Those skilled in the art can understand that the features and advantages described above for the active agent are also applicable to the monoammonium phosphate, and will not be repeated here.

[0048] In some embodiments of the present invention, the monoammonium phosphate further comprises a synergist. Thus, the synergist of the present invention can further promote the root development and aboveground growth of crops, thereby increasing the yield of crops.

[0049] In some embodiments of the present invention, the monoammonium phosphate includes: 85-95 parts by weight of monoammonium phosphate raw material; 3-10 parts by weight of synergist; 2-5 parts by weight of activator. Therefore, the monoammonium phosphate of the present invention has good product properties and fertilizer effect. The activator contained in it can activate the phosphorus in the monoammonium phosphate, reduce its water insoluble matter, improve water solubility, and reduce its fixation in the soil. The synergist can promote crop growth and increase crop yield. At the same time, the monoammonium phosphate in the present invention has good product properties and effects, reduces precipitation in hard water, and can be widely used in drip irrigation of saline-alkali land, with great application prospects and value.

[0050] Illustratively, the weight parts of the monoammonium phosphate raw material can be 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, etc., or can be a range consisting of any of the above values.

[0051] Illustratively, the weight portion of the synergist can be 3, 4, 5, 6, 7, 8, 9, 10, etc., or can be a range consisting of any of the above values.

[0052] For example, the weight portion of the activator can be 2, 3, 4, 5, etc., or can be a range consisting of any of the above values.

[0053] It should be noted that the monoammonium phosphate raw material of the present invention is widely used in agricultural production to supplement nitrogen and phosphorus elements for crops, and it can be derived from phosphoric acid, phosphate rock, etc., or the monoammonium phosphate raw material can be purchased. When the monoammonium phosphate raw material of the present invention is derived from phosphoric acid, the concentration of phosphoric acid is ≥45%.

[0054] In some embodiments of the present invention, the synergist includes at least one of alginic acid, polyglutamic acid, γ-aminobutyric acid, glycine, serine, and boron. Among them, alginic acid, polyglutamic acid and γ-aminobutyric acid play a synergistic role, which can promote the growth and development of crop roots, improve the rooting and germination ability of crops on saline-alkali land, activate phosphorus, and reduce the fixation of phosphorus in the soil; at the same time, it contains glycine, serine and trace elements, which can promote the differentiation of crop root cells and enhance the photosynthetic capacity of crops, and provide trace elements for plant growth. Therefore, through the combination of the synergist, it can promote the development of crop roots and the growth of the aboveground parts.

[0055] In some embodiments of the present invention, the synergist includes 30-45 parts by weight of alginic acid, 20-25 parts by weight of polyglutamic acid, 20-25 parts by weight of γ-aminobutyric acid, 5-7 parts by weight of glycine, 5-7 parts by weight of serine, and 5-6 parts by weight of boron. Thus, the phosphorus in the soil can be further activated, its water insoluble matter can be reduced, its water solubility can be increased, the fixation of phosphorus in the soil can be reduced, its mobility can be enhanced, and the growth and development of crop roots can be promoted, the nutrient absorption capacity can be enhanced, and the crop yield can be increased.

[0056] Illustratively, the weight percentage of the alginate can be 30, 32, 35, 37, 40, 42, 45, etc., or can be a range consisting of any of the above values.

[0057] Illustratively, the weight portion of the polyglutamic acid can be 20, 21, 22, 23, 24, 25, etc., or can be a range consisting of any of the above values.

[0058] Illustratively, the weight portion of the γ-aminobutyric acid can be 20, 21, 22, 23, 24, 25, etc., or can be a range consisting of any of the above values.

[0059] Illustratively, the weight portion of glycine can be 5, 6, 7, etc., or can be a range consisting of any of the above values.

[0060] Illustratively, the weight portion of the serine can be 5, 6, 7, etc., or can be a range consisting of any of the above values.

[0061] Illustratively, the weight percentage of the boron element can be 5, 5.5, 6, etc., or can be in a range consisting of any of the above values.

[0062] In some embodiments of the present invention, the boron element is derived from at least one of sodium tetraborate decahydrate, sodium octaborate tetrahydrate, and boric acid.

[0063] The present invention proposes a method for preparing monoammonium phosphate. According to an embodiment of the present invention, the method comprises: subjecting the above-mentioned activator to a first mixing treatment with a monoammonium phosphate raw material to obtain a first mixed treatment product; subjecting the first mixed treatment product to a neutralization reaction with ammonia to obtain a slurry; subjecting the slurry to a second mixing treatment with the synergist to obtain the monoammonium phosphate. Thus, the monoammonium phosphate prepared by the method of the present invention can not only reduce the fixation of phosphorus and improve the utilization efficiency of phosphorus in monoammonium phosphate, but also improve the rooting and germination ability of crops on saline-alkali land, saving resources while promoting crop growth. Those skilled in the art can understand that the characteristics and advantages described above for the monoammonium phosphate are also applicable to the method for preparing monoammonium phosphate, and will not be repeated here.

[0064] application

[0065] The present invention proposes the use of the above-mentioned activator, the above-mentioned monoammonium phosphate or the monoammonium phosphate prepared by the above-mentioned method in cultivating crops or increasing crop yields. As mentioned above, the activator of the present invention can enhance the activity of phosphorus in monoammonium phosphate, reduce its water-insoluble matter, improve water solubility, and reduce its fixation in the soil, thereby promoting crop production and increasing crop yields. It can be understood by those skilled in the art that the features and advantages described above for the activator and monoammonium phosphate are also applicable to this application and will not be repeated here.

[0066] In some embodiments of the present invention, the crop comprises at least one of cotton, Arabidopsis, rice, corn, wheat, sorghum, barley, oats, rye, soybean, tobacco, rapeseed, and tomato.

[0067] The present invention proposes a method for increasing the water-soluble phosphorus content of monoammonium phosphate. According to an embodiment of the present invention, the method comprises: adding the above-mentioned activator during the preparation of the monoammonium phosphate, or using the above-mentioned monoammonium phosphate, or the monoammonium phosphate prepared by the above-mentioned method. As mentioned above, the activator of the present invention can enhance the activity of phosphorus in monoammonium phosphate, reduce its water-insoluble matter, increase water solubility, reduce its fixation in the soil, and increase the content of water-soluble phosphorus. Therefore, the method of the present invention can increase the content of water-soluble phosphorus in monoammonium phosphate. Those skilled in the art can understand that the features and advantages described above for the activator and monoammonium phosphate are also applicable to this method, and will not be repeated here.

[0068] The present invention provides a method for increasing crop yield and promoting crop growth. According to an embodiment of the present invention, the method comprises: applying the above-mentioned monoammonium phosphate or the monoammonium phosphate prepared by the above-mentioned method to the crop. As mentioned above, the monoammonium phosphate of the present invention has excellent water solubility and a high water-soluble phosphorus (P 2 O 5 ) content, can improve the utilization efficiency of phosphorus element, therefore, the monoammonium phosphate of the present invention has a strong fertilizer effect, can promote crop growth, and increase crop yield. Those skilled in the art can understand that the characteristics and advantages described above for the monoammonium phosphate are also applicable to this method, and will not be repeated here.

[0069] In some embodiments of the present invention, the crop comprises at least one of cotton, Arabidopsis, rice, corn, wheat, sorghum, barley, oats, rye, soybean, tobacco, rapeseed, and tomato.

[0070] The scheme of the present invention will be explained below in conjunction with the embodiments. It will be appreciated by those skilled in the art that the following embodiments are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. Where specific techniques or conditions are not indicated in the embodiments, the techniques or conditions described in the literature in this area or the product specifications are used. The reagents or instruments used are not indicated by the manufacturer and are all conventional products that can be obtained commercially.

[0071] Example 1

[0072] Preparation of activator: Based on 100 parts by weight of the activator, 25 parts by weight of hydroxypropyl-β-cyclodextrin, 30 parts by weight of citric acid, 25 parts by weight of hydrofluoric acid, 10 parts by weight of phosphine carboxylic acid, and 10 parts by weight of sodium dodecylbenzene sulfonate are uniformly mixed to obtain the activator.

[0073] Preparation of synergist: Based on 100 parts by weight of the synergist, 30 parts by weight of alginate, 25 parts by weight of polyglutamic acid, 25 parts by weight of γ-aminobutyric acid, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0074] 10 parts by weight of a synergist and 5 parts by weight of an activator are added to 142 parts by weight of 45% mass concentration phosphoric acid (equivalent to 85 parts of monoammonium phosphate) to obtain synergistic water-soluble monoammonium phosphate 1.

[0075] The enhanced water-soluble monoammonium phosphate is prepared by the following method:

[0076] (1) Add an activator to the phosphoric acid raw material to obtain modified phosphoric acid.

[0077] (2) The modified phosphoric acid is subjected to a neutralization reaction with liquid ammonia until the degree of neutralization is about 1.1 to obtain ammonium phosphate slurry.

[0078] (3) Adding the synergist into the ammonium phosphate slurry to obtain the ammonium phosphate slurry containing the synergist carrier.

[0079] (4) spray drying the ammonium phosphate slurry to obtain a powdered synergistic water-soluble monoammonium phosphate 1 finished product.

[0080] Example 2

[0081] Preparation of activator: Based on 100 parts by weight of the activator, 35 parts by weight of hydroxypropyl-β-cyclodextrin, 27 parts by weight of citric acid, 23 parts by weight of hydrofluoric acid, 8 parts by weight of phosphine carboxylic acid, and 7 parts by weight of sodium dodecylbenzene sulfonate were uniformly mixed to obtain the activator.

[0082] Preparation of synergist: Based on 100 parts by weight of the synergist, 45 parts by weight of alginate, 20 parts by weight of polyglutamic acid, 20 parts by weight of γ-aminobutyric acid, 5 parts by weight of glycine, 5 parts by weight of serine, and 5 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0083] 10 parts by weight of the synergist and 5 parts by weight of the activator were added to 142 parts by weight of 45% mass concentration phosphoric acid (equivalent to 85 parts of monoammonium phosphate) to obtain synergistic water-soluble monoammonium phosphate 2.

[0084] According to the production process of enhanced water-soluble monoammonium phosphate 1 in Example 1, enhanced water-soluble monoammonium phosphate 2 was prepared.

[0085] Example 3

[0086] Preparation of activator: Based on 100 parts by weight of the activator, 33 parts by weight of sulfobutyl-β-cyclodextrin, 28 parts by weight of malic acid, 24 parts by weight of sodium fluoride, 8 parts by weight of polyacrylic acid, and 7 parts by weight of sodium lignin sulfonate were uniformly mixed to obtain the activator.

[0087] Preparation of synergist: Based on 100 parts by weight of the synergist, 35 parts by weight of alginate, 23 parts by weight of polyglutamic acid, 22 parts by weight of γ-aminobutyric acid, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0088] 3 parts by weight of a synergist and 2 parts by weight of an activator were added to 158 parts by weight of 45% mass concentration phosphoric acid (equivalent to 95 parts of monoammonium phosphate) to obtain synergistic water-soluble monoammonium phosphate 3.

[0089] According to the production process of enhanced water-soluble monoammonium phosphate 1 in Example 1, enhanced water-soluble monoammonium phosphate 3 was prepared.

[0090] Example 4

[0091] Preparation of activator: Based on 100 parts by weight of the activator, 30 parts by weight of sulfobutyl-β-cyclodextrin, 29 parts by weight of tartaric acid, 24 parts by weight of ammonium fluoride, 9 parts by weight of sulfonated lignin, and 8 parts by weight of sodium dodecyl sulfate were uniformly mixed to obtain the activator.

[0092] Preparation of synergist: Based on 100 parts by weight of the synergist, 43 parts by weight of alginate, 21 parts by weight of polyglutamic acid, 21 parts by weight of γ-aminobutyric acid, 5 parts by weight of glycine, 5 parts by weight of serine, and 5 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0093] 6 parts by weight of a synergist and 4 parts by weight of an activator are added to 150 parts by weight of 45% mass concentration phosphoric acid (equivalent to 90 parts of monoammonium phosphate) to obtain synergistic water-soluble monoammonium phosphate 4.

[0094] According to the production process of enhanced water-soluble monoammonium phosphate in Example 1, enhanced water-soluble monoammonium phosphate 4 was prepared.

[0095] Comparative Example 1

[0096] According to the production process of synergistic water-soluble monoammonium phosphate in Example 1, ordinary monoammonium phosphate is prepared without synergist and activator.

[0097] Comparative Example 2

[0098] According to the production process of enhanced water-soluble monoammonium phosphate in Example 1, monoammonium phosphate without an activator is prepared, and the specific ingredients are as follows:

[0099] Preparation of synergist: Based on 100 parts by weight of the synergist, 30 parts by weight of alginate, 25 parts by weight of polyglutamic acid, 25 parts by weight of γ-aminobutyric acid, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0100] 10 parts by weight of the synergist are added to 150 parts by weight of phosphoric acid with a mass concentration of 45% (equivalent to 90 parts of monoammonium phosphate) to obtain monoammonium phosphate without an activator.

[0101] Comparative Example 3

[0102] According to the production process of synergistic water-soluble monoammonium phosphate in Example 1, monoammonium phosphate without synergist is prepared, and the specific ingredients are as follows:

[0103] Preparation of activator: Based on 100 parts by weight of the activator, 25 parts by weight of hydroxypropyl-β-cyclodextrin, 30 parts by weight of citric acid, 25 parts by weight of hydrofluoric acid, 10 parts by weight of phosphine carboxylic acid, and 10 parts by weight of sodium dodecylbenzene sulfonate are uniformly mixed to obtain the activator.

[0104] 5 parts by weight of the activator are added to 158 parts by weight of phosphoric acid with a mass concentration of 45% (equivalent to 95 parts of monoammonium phosphate) to obtain monoammonium phosphate without a synergist.

[0105] Comparative Example 4

[0106] According to the production process of synergistic water-soluble monoammonium phosphate in Example 1, monoammonium phosphate with a replaced synergist component was prepared, and the specific ingredients are as follows:

[0107] Preparation of activator: Based on 100 parts by weight of the activator, 25 parts by weight of hydroxypropyl-β-cyclodextrin, 30 parts by weight of citric acid, 25 parts by weight of hydrofluoric acid, 10 parts by weight of phosphine carboxylic acid, and 10 parts by weight of sodium dodecylbenzene sulfonate are uniformly mixed to obtain the activator.

[0108] Preparation of synergist: Based on 100 parts by weight of the synergist, 30 parts by weight of alginate, 25 parts by weight of polyacrylamide, 25 parts by weight of chitosan, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0109] 10 parts by weight of a synergist and 5 parts by weight of an activator are added to 142 parts by weight of 45% mass concentration phosphoric acid (equivalent to 85 parts of monoammonium phosphate) to obtain monoammonium phosphate with a replaced synergist component.

[0110] Comparative Example 5

[0111] According to the production process of synergistic water-soluble monoammonium phosphate in Example 1, monoammonium phosphate with a replaced activator component was prepared, and the specific ingredients were as follows:

[0112] Preparation of activator: Based on 100 parts by weight of the activator, 33 parts by weight of polyaspartic acid, 28 parts by weight of malic acid, 24 parts by weight of sodium fluoride, 8 parts by weight of polyacrylic acid, and 7 parts by weight of sodium lignin sulfonate were uniformly mixed to obtain an activator.

[0113] Preparation of synergist: Based on 100 parts by weight of the synergist, 35 parts by weight of alginate, 23 parts by weight of polyglutamic acid, 23 parts by weight of γ-aminobutyric acid, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0114] 3 parts by weight of a synergist and 2 parts by weight of an activator are added to 158 parts by weight of phosphoric acid with a mass concentration of 45% (equivalent to 95 parts of monoammonium phosphate) to obtain monoammonium phosphate with a replaced activator component.

[0115] Comparative Example 6

[0116] According to the production process of synergistic water-soluble monoammonium phosphate in Example 1, monoammonium phosphate 1 of a single-component synergist was prepared, and the specific ingredients are as follows:

[0117] Preparation of activator: Based on 100 parts by weight of the activator, 25 parts by weight of hydroxypropyl-β-cyclodextrin, 30 parts by weight of citric acid, 25 parts by weight of hydrofluoric acid, 10 parts by weight of phosphine carboxylic acid, and 10 parts by weight of sodium dodecylbenzene sulfonate are uniformly mixed to obtain the activator.

[0118] Preparation of the synergist: Based on 100 parts by weight of the synergist, 80 parts by weight of alginic acid, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate were uniformly mixed to obtain the synergist.

[0119] 10 parts by weight of a synergist and 5 parts by weight of an activator were added to 142 parts by weight of 45% mass concentration phosphoric acid (equivalent to 85 parts of monoammonium phosphate) to obtain monoammonium phosphate 1 of a single-component synergist.

[0120] Comparative Example 7

[0121] According to the production process of synergistic water-soluble monoammonium phosphate in Example 1, monoammonium phosphate 2 of a single-component synergist was prepared, and the specific ingredients are as follows:

[0122] Preparation of activator: Based on 100 parts by weight of the activator, 25 parts by weight of hydroxypropyl-β-cyclodextrin, 30 parts by weight of citric acid, 25 parts by weight of hydrofluoric acid, 10 parts by weight of phosphine carboxylic acid, and 10 parts by weight of sodium dodecylbenzene sulfonate are uniformly mixed to obtain the activator.

[0123] Preparation of synergist: Based on 100 parts by weight of the synergist, 80 parts by weight of polyglutamic acid, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0124] 10 parts by weight of the synergist and 5 parts by weight of the activator were added to 142 parts by weight of 45% mass concentration phosphoric acid (equivalent to 85 parts of monoammonium phosphate) to obtain monoammonium phosphate 2 of a single-component synergist.

[0125] Comparative Example 8

[0126] According to the production process of synergistic water-soluble monoammonium phosphate in Example 1, monoammonium phosphate 3 of a single-component synergist was prepared, and the specific ingredients are as follows:

[0127] Preparation of activator: Based on 100 parts by weight of the activator, 25 parts by weight of hydroxypropyl-β-cyclodextrin, 30 parts by weight of citric acid, 25 parts by weight of hydrofluoric acid, 10 parts by weight of phosphine carboxylic acid, and 10 parts by weight of sodium dodecylbenzene sulfonate are uniformly mixed to obtain the activator.

[0128] Preparation of the synergist: Based on 100 parts by weight of the synergist, 80 parts by weight of γ-aminobutyric acid, 7 parts by weight of glycine, 7 parts by weight of serine, and 6 parts by weight of sodium tetraborate decahydrate are uniformly mixed to obtain the synergist.

[0129] 10 parts by weight of the synergist and 5 parts by weight of the activator were added to 142 parts by weight of 45% mass concentration phosphoric acid (equivalent to 85 parts of monoammonium phosphate) to obtain monoammonium phosphate 3 of a single-component synergist.

[0130] Test experiment:

[0131] 1. The fertilizer effects of the synergistic water-soluble monoammonium phosphate of Examples 1-4 and the monoammonium phosphate of Comparative Examples 1-8 on cotton were tested.

[0132] The experimental design is as follows:

[0133] Cotton variety for testing: Xinjiang "Tahe No. 2" cotton

[0134] Test location: Tarim, Xinjiang

[0135] Trial period: April 1, 2023 - December 1, 2023

[0136] Test fertilizers: synergistic water-soluble monoammonium phosphate of Examples 1-4, monoammonium phosphate of Comparative Examples 1-8

[0137] Experimental design: A cotton field test was used to verify the fertilizer effect of synergistic water-soluble monoammonium phosphate. There were 12 treatments in total. Treatment 1 was the synergistic water-soluble monoammonium phosphate obtained in Example 1, Treatment 2 was the synergistic water-soluble monoammonium phosphate obtained in Example 2, Treatment 3 was the synergistic water-soluble monoammonium phosphate obtained in Example 3, Treatment 4 was the synergistic water-soluble monoammonium phosphate obtained in Example 4, Treatment 5 was the ordinary monoammonium phosphate without synergist and activator obtained in Comparative Example 1, Treatment 6 was the monoammonium phosphate without activator obtained in Comparative Example 2, Treatment 7 was the monoammonium phosphate without synergist obtained in Comparative Example 3, Treatment 8 was the monoammonium phosphate with the synergist component replaced in Comparative Example 4, Treatment 9 was the monoammonium phosphate with the activator component replaced in Comparative Example 5, Treatment 10 was the monoammonium phosphate 1 with a single-component synergist obtained in Comparative Example 6, Treatment 11 was the monoammonium phosphate 2 with a single-component synergist obtained in Comparative Example 7, and Treatment 12 was the monoammonium phosphate 3 with a single-component synergist obtained in Comparative Example 8. Each treatment area was 5 mu, and the phosphorus application rate (P 2 O 5 ) were 14kg / mu, and cotton management was carried out according to local conventional cultivation techniques. The yield of each treatment was measured after harvest.

[0138] The test results are shown in Table 1:

[0139] Table 1 Effects of high-efficiency potassium fertilizer on cotton yield and growth indicators in Xinjiang

[0140]

[0141] As can be seen from Table 1, the application of the synergistic water-soluble monoammonium phosphate of Examples 1-4 and the monoammonium phosphate of Comparative Examples 1-8 can increase the yield of cotton seeds and promote the growth of cotton. Compared with the ordinary monoammonium phosphate of treatment 5, treatments 1-4 and 6-12 increase the yield of cotton seeds by 7.5%-19.7%, the number of bolls by 2.2%-19.1%, the boll weight by 0.9%-6.9%, the plant height by 1.5%-11.3%, and the stem thickness by 3.3%-23.3%. Treatments 6-12 are weaker than treatments 1-4 in terms of cotton yield and growth indicators. Among them, treatments 6-7 show that the synergist and activator in the present invention are used together for better results, treatments 8-9 show that replacing the synergist and activator components in the present invention reduces the effect of the product, and treatments 10-12 show that alginate, polyglutamic acid, and γ-aminobutyric acid in the synergist of the present invention have a synergistic effect, and can only be effective when added at the same time.

[0142] 2. The water-insoluble matter and water-soluble phosphorus of the synergistic water-soluble monoammonium phosphate of Examples 1-4 and the monoammonium phosphate of Comparative Examples 1-8 were measured.

[0143] The specific measurement process is as follows:

[0144] Weigh 1g of sample (accurate to 0.001g) and place it in a glass crucible, add 250ml of deionized water and stir until dissolved, let the solution stand for 0.5-1h to allow the insoluble matter to precipitate. Filter with microporous filter paper to collect the solid residue, dry and weigh the solid residue at 110℃, and the ratio of the solid residue weight to the sample mass is the water-insoluble content.

[0145] Weigh about 1g (accurate to 0.0001g) of the sample into a 200mL extraction bottle, add 100ml of water, tighten the bottle cap, and reciprocate in a constant temperature oscillator at a vibration speed of 180 times / min for 30min. Filter and determine the water-soluble phosphorus content in the filtrate. The phosphorus in the filtrate is the water-soluble phosphorus content. There are 12 treatments in total in the test, treatment 1 is the synergistic water-soluble monoammonium phosphate obtained in Example 1, treatment 2 is the synergistic water-soluble monoammonium phosphate obtained in Example 2, treatment 3 is the synergistic water-soluble monoammonium phosphate obtained in Example 3, treatment 4 is the synergistic water-soluble monoammonium phosphate obtained in Example 4, treatment 5 is the ordinary monoammonium phosphate without synergist and activator obtained in Comparative Example 1, treatment 6 is the monoammonium phosphate without activator obtained in Comparative Example 2, treatment 7 is the monoammonium phosphate without synergist obtained in Comparative Example 3, treatment 8 is the monoammonium phosphate with the synergist component replaced in Comparative Example 4, treatment 9 is the monoammonium phosphate with the activator component replaced in Comparative Example 5, treatment 10 is the monoammonium phosphate 1 with a single-component synergist obtained in Comparative Example 6, treatment 11 is the monoammonium phosphate 2 with a single-component synergist obtained in Comparative Example 7, and treatment 12 is the monoammonium phosphate 3 with a single-component synergist obtained in Comparative Example 8.

[0146] The test results are shown in Table 2:

[0147] Table 2

[0148] deal with Water insoluble matter content (%) <![CDATA[Water-soluble phosphorus (P 2 O 5 ) content (%)]]> Process 1 0.93 53.5 Process 2 0.95 53.4 Process 3 0.95 54.9 Process 4 0.91 54.1 Process 5 2.12 49.5 Process 6 1.49 50.1 Process 7 0.92 53.6 Process 8 0.98 52.8 Process 9 1.31 50.9 Processing 10 0.96 52.2 Process 11 0.98 52.6 Processing 12 0.97 52.7

[0149] The results in Table 2 show that adding the activator of the present invention has a good effect. Compared with treatment 5, the water-insoluble content of treatments 1-4 is reduced by 55.2%-57.1%, and the water-soluble phosphorus content is increased by 7.9%-10.9%. At the same time, compared with treatments 6, 8-12, the water-insoluble content of treatments 1-4 and 7 is reduced, and the water-soluble phosphorus content is increased, indicating that the activator of the present invention can reduce the water-insoluble content and increase the water-soluble phosphorus content when used alone or together with the synergist, and is better than not adding the activator or changing the components of the activator and the synergist.

[0150] In summary, the synergist of the present invention and the activator are used together to achieve good results, which can not only increase the cotton seed yield and promote cotton growth, but also reduce the content of water-insoluble matter and increase the content of water-soluble phosphorus.

[0151] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0152] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An activator, characterized in that include: Solubilizers, organic acids, surfactants, anti-precipitation agents and additives; Wherein, the dissolution promoting agent includes at least one of hydroxypropyl-β-cyclodextrin and sulfobutyl-β-cyclodextrin.

2. The activator according to claim 1, characterized in that include: 25-35 parts by weight of a solubilizing agent; 27-30 parts by weight of organic acid; 23-25 ​​parts by weight of an active agent; 8-10 parts by weight of an anti-precipitation agent; 7-10 parts by weight of auxiliary agents.

3. The activator according to claim 2, characterized in that The organic acid includes at least one of citric acid, malic acid, tartaric acid, oxalic acid, and succinic acid; Optionally, the active agent comprises a soluble fluoride salt; Optionally, the soluble fluoride salt includes at least one of hydrofluoric acid, ammonium fluoride, fluorosilicic acid, and sodium fluoride; Optionally, the anti-precipitation agent includes at least one of polyepoxysuccinic acid, phosphine carboxylic acid, benzotriazole, sulfonated lignin, polyacrylic acid, hydrolyzed polymaleic anhydride, and acrylic acid-ethyl acrylate-itaconic acid copolymer; Optionally, the auxiliary agent includes at least one of sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium lignin sulfonate, sodium lauryl sulfate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, benzylphenol polyoxyethylene ether, and phenethylphenol polyoxyethylene ether.

4. A monoammonium phosphate, characterized in that: The invention comprises the activator according to any one of claims 1 to 3 and a monoammonium phosphate raw material.

5. The monoammonium phosphate according to claim 4, characterized in that Further included are synergists.

6. The monoammonium phosphate according to claim 5, characterized in that include: 85-95 parts by weight of monoammonium phosphate raw material; 3-10 parts by weight of a synergist; 2-5 parts by weight of activator.

7. The monoammonium phosphate according to claim 6, characterized in that The synergist includes at least one of alginic acid, polyglutamic acid, γ-aminobutyric acid, glycine, serine, and boron.

8. The monoammonium phosphate according to claim 7, characterized in that The synergist comprises 30-45 parts by weight of alginic acid, 20-25 parts by weight of polyglutamic acid, 20-25 parts by weight of gamma-aminobutyric acid, 5-7 parts by weight of glycine, 5-7 parts by weight of serine, and 5-6 parts by weight of boron.

9. The monoammonium phosphate according to claim 8, characterized in that The boron element is derived from at least one of sodium tetraborate decahydrate, sodium octaborate tetrahydrate and boric acid.

10. A method for preparing the monoammonium phosphate according to any one of claims 4 to 9, characterized in that: include: Performing a first mixing treatment on the activator according to any one of claims 1 to 3 and the monoammonium phosphate raw material to obtain a first mixed treatment product; neutralizing the first mixed treatment product with ammonia to obtain a slurry; The slurry and the synergist are subjected to a second mixing treatment to obtain the monoammonium phosphate.

11. Use of the activator according to any one of claims 1 to 3, the monoammonium phosphate according to any one of claims 4 to 9, or the monoammonium phosphate prepared by the method according to claim 10 in cultivating crops or increasing crop yields.

12. A method for increasing the water-soluble phosphorus content of monoammonium phosphate, characterized in that: include: In the process of preparing the monoammonium phosphate, the activator described in any one of claims 1 to 3 is added, or the monoammonium phosphate described in any one of claims 4 to 9 or the monoammonium phosphate prepared by the method described in claim 10 is used.

13. A method for increasing crop yield and promoting crop growth, characterized in that: include: The monoammonium phosphate according to any one of claims 4 to 9 or the monoammonium phosphate prepared by the method according to claim 10 is applied to the crop.

14. The method according to claim 13, characterized in that The crop comprises at least one of cotton, Arabidopsis, rice, corn, wheat, sorghum, barley, oats, rye, soybean, tobacco, rapeseed, and tomato.

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