A dry suspension concentrate containing silicon-zinc fertilizer and its preparation method and application

Abstract

The present application relates to the technical field of crop fertilizers, and specifically discloses a dry suspension concentrate containing silicon-zinc fertilizers, and its preparation method and application. The dry suspension concentrate containing silicon-zinc fertilizers disclosed in the present application specifically includes the following components in parts by weight: 24-32 parts of silicon dioxide, 8-12 parts of zinc oxide, 1-3 parts of hydroxyethyl cellulose, 2-5 parts of γ-polyglutamic acid, 20-28 parts of fillers, and 0.5-0.8 parts of additives; the additives include sodium alginate and xanthan gum in a weight ratio of 7:0.1-0.5. The present application also provides a preparation method for the above-mentioned suspension concentrate and its application in fertilizers. The suspension concentrate prepared using the raw material formula provided in the present application is used in the production fertilizer of crops, which can effectively increase the organic matter content in the soil, while also helping to improve the absorption efficiency of fertilizers by crops, improve the fertilization effect, and thus ensure the yield and quality of crops.

Description

Technical Field

[0001] The present application relates to the technical field of crop fertilizers, and in particular to a dry suspension concentrate containing silicon-zinc fertilizers, and a preparation method and application thereof. Background Art

[0002] With the development of modern agriculture, the demand for fertilizers is increasing. Silicon and zinc are essential elements for plant growth and are crucial for improving crop yield and quality. However, existing silicon-zinc fertilizers suffer from low absorption efficiency and unsatisfactory fertilization effects. Therefore, developing a new silicon-zinc fertilizer to improve fertilizer effectiveness and meet the needs of modern agriculture is of great practical significance. Summary of the Invention

[0003] In order to improve the fertilization effect of silicon-zinc fertilizers and increase the yield and quality of crops, the present application provides a dry suspension concentrate containing silicon-zinc fertilizers and a preparation method and application thereof.

[0004] In a first aspect, the present application provides a dry suspension concentrate containing silicon-zinc fertilizer, specifically comprising the following components in parts by weight: 24-32 parts of silicon dioxide, 8-12 parts of zinc oxide, 1-3 parts of hydroxyethyl cellulose, 2-5 parts of gamma-polyglutamic acid, 3-7 parts of fruit powder, 20-28 parts of filler, and 0.5-0.8 parts of additives;

[0005] The fruit powder is selected from one or more of sea buckthorn fruit powder, lemon fruit powder, and mulberry fruit powder;

[0006] The auxiliary agent comprises sodium alginate and xanthan gum in a weight ratio of 7:0.1-0.5.

[0007] This application uses sodium alginate and xanthan gum in a weight ratio of 7:0.1-0.5 as auxiliary agents, and selects one or more of sea buckthorn fruit powder, lemon fruit powder, and mulberry fruit powder as fruit powder, and silicon dioxide, zinc oxide, hydroxyethyl cellulose, γ-polyglutamic acid, and fillers as raw materials. The prepared suspension is used in the production of fertilizers for crops, which can effectively increase the organic matter content in the soil, help improve the absorption efficiency of fertilizers by crops, improve the fertilization effect, and thus ensure the yield and quality of crops.

[0008] Preferably, the dry suspension concentrate containing silicon-zinc fertilizer specifically comprises the following components in parts by weight: 26-30 parts of silicon dioxide, 9-11 parts of zinc oxide, 1.5-2.5 parts of hydroxyethyl cellulose, 3-4 parts of γ-polyglutamic acid, 4-6 parts of plant extract, 22-26 parts of filler, and 0.6-0.7 parts of adjuvant.

[0009] Preferably, the auxiliary agent comprises sodium alginate and xanthan gum in a weight ratio of 7:0.2-0.4.

[0010] In a specific embodiment, the weight ratio of sodium alginate to xanthan gum can be 7:0.1, 7:0.2, 7:0.3, 7:0.4, or 7:0.5.

[0011] In some specific embodiments, the weight ratio of sodium alginate to xanthan gum can be 7:0.1-0.2, 7:0.1-0.3, 7:0.1-0.4, 7:0.2-0.3, 7:0.2-0.5, 7:0.3-0.4, 7:0.4-0.5, 7:0.3-0.5.

[0012] Through experimental analysis, it can be seen that this application can effectively improve the performance of the suspension concentrate by using sodium alginate and xanthan gum in the above-mentioned weight ratio as adjuvants in the dry suspension concentrate containing silicon zinc fertilizer, further improve the yield and quality of crops, and thus increase the economic value of crops.

[0013] Preferably, the fruit powder comprises sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 0.5-1.5:9.

[0014] Furthermore, the fruit powder comprises sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 0.7-1.3:9.

[0015] In a specific embodiment, the weight ratio of the sea buckthorn fruit powder to the mulberry fruit powder can be 0.5:9, 0.7:9, 1:9, 1.3:9, or 1.5:9.

[0016] In some specific embodiments, the weight ratio of the sea buckthorn fruit powder to the mulberry fruit powder can also be 0.5-0.7:9, 0.5-1:9, 0.5-1.3:9, 0.7-1:9, 0.7-1.5:9, 1-1.3:9, 1-1.5:9, or 1.3-1.5:9.

[0017] Through experimental analysis, it can be known that the present application can further improve the yield and quality of crops, thereby increasing the economic value of crops, by utilizing the above-mentioned weight ratio of sea buckthorn fruit powder and mulberry fruit powder as the fruit powder in the dry suspension containing silicon zinc fertilizer.

[0018] Preferably, the viscosity of the hydroxyethyl cellulose is 5500-6500 mPa·s.

[0019] Through experimental analysis, it is known that in the process of preparing the suspension agent, the viscosity of hydroxyethyl cellulose has a great influence on the performance of the suspension agent. The present application screened the viscosity of hydroxyethyl cellulose within the above range through experiments, which can effectively improve the effect of the suspension agent in fertilizer application.

[0020] Preferably, the filler is selected from one or more of talc, white carbon black, bentonite, calcium carbonate, activated clay and kaolin.

[0021] In a second aspect, the present application provides a method for preparing the dry suspension concentrate of the above-mentioned silicon-zinc fertilizer, which specifically comprises the following steps:

[0022] Weigh each raw material according to weight, mix evenly, and then mix with water at a solid-liquid weight ratio of 4-7:10 to obtain a slurry;

[0023] The slurry is subjected to centrifugal spray drying and screening to obtain the dry suspension concentrate containing silicon-zinc fertilizer.

[0024] Preferably, the specific process parameters of the centrifugal spray drying are: pressure of 1-3 MPa, air inlet temperature of 140-160°C, and air outlet temperature of 80-95°C.

[0025] The present application forms a homogeneous slurry with suitable viscosity and stable properties by uniformly mixing the raw material components, and then obtains a suspension concentrate with good dispersibility and complete structure of active ingredients through centrifugal spray drying and screening, thereby improving the biological activity of the dry suspension concentrate containing silicon-zinc fertilizer, and thus making the dry suspension concentrate prepared by the present application have an excellent use effect of improving fertilizer utilization rate.

[0026] In a third aspect, the present application provides a fertilizer comprising a dry suspension concentrate of any of the above-mentioned silicon-zinc fertilizers.

[0027] Preferably, the fertilizer comprises the following components in parts by weight: 8-12 parts of urea, 2-4 parts of phosphorus pentoxide, 3.2-4.8 parts of potassium oxide, and 4.2-5.6 parts of the dry suspension concentrate of the above-mentioned silicon-zinc fertilizer.

[0028] In summary, the technical solution of this application has the following effects:

[0029] This application uses sodium alginate and xanthan gum in a specific weight ratio as adjuvants, and selects one or more of sea buckthorn fruit powder, lemon fruit powder, and mulberry fruit powder as fruit powder, and silicon dioxide, zinc oxide, hydroxyethyl cellulose, γ-polyglutamic acid, and fillers as raw materials. The prepared suspension is used in the production of fertilizers for crops, which can effectively increase the organic matter content in the soil while ensuring the yield and quality of crops.

[0030] This application further improves the effect of the dry suspension concentrate containing silicon-zinc fertilizer by screening the dosage ratio of each raw material, the type of adjuvant, and the type of fruit powder, thereby further improving the yield and quality of crops. DETAILED DESCRIPTION

[0031] The specific purchase sources of the raw materials used in this application are as follows: hydroxyethyl cellulose was purchased from Shanghai Yuanye Biotechnology Co., Ltd.; γ-polyglutamic acid was purchased from Guangzhou Kafen Biotechnology Co., Ltd.; xanthan gum, sea buckthorn fruit powder, lemon fruit powder, mulberry fruit powder, and wolfberry fruit powder were purchased from Xi'an Jinyuan Biotechnology Co., Ltd.; the remaining raw materials and reagents can be obtained commercially.

[0032] The present application is further described in detail below in conjunction with examples, comparative examples and performance testing experiments. These examples should not be construed as limiting the scope of protection claimed in this application.

[0033] Example

[0034] Examples 1-3

[0035] Examples 1-3 each provide a fertilizer.

[0036] The difference between the above embodiments is that the amounts of the raw material components in the suspending agent are different, as shown in Table 1.

[0037] The specific preparation process of the suspension in the above embodiment is as follows:

[0038] According to the formulation requirements shown in Table 1, corresponding weight portions of silicon dioxide, zinc oxide, hydroxyethyl cellulose (viscosity of 5500-6500 mPa·s), γ-polyglutamic acid, fruit powder (the fruit powder is composed of a mixture of sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 1:9), talcum powder filler, and auxiliary agent (the auxiliary agent is composed of a mixture of sodium alginate and xanthan gum in a weight ratio of 7:0.3) are weighed respectively, uniformly mixed, and then mixed with water at a solid-liquid weight ratio of 1:2 to obtain a slurry;

[0039] The slurry is subjected to centrifugal spray drying. The specific process conditions of spray drying are: pressure of 2MPa, air inlet temperature of 150℃, and air outlet temperature of 90℃; the spray-dried material is sieved through a 20-100 mesh screen to obtain a dry suspension containing silicon-zinc fertilizer.

[0040] The specific preparation process of fertilizer in the above embodiment is as follows:

[0041] Weigh 10 kg of urea, 3 kg of phosphorus pentoxide, 4 kg of oxygen, and 4.8 kg of the dry suspension prepared above, and mix the raw materials to obtain the product.

[0042] Table 1 Amount of each raw material component in the suspension

[0043]

[0044] Examples 4-5

[0045] Examples 4-5 each provide a fertilizer.

[0046] The difference between the above embodiment and embodiment 2 is that the types of adjuvants in the suspending agent are different, as shown below.

[0047] In Example 4, the auxiliary agent is composed of a mixture of sodium alginate and xanthan gum in a weight ratio of 7:0.1.

[0048] In Example 5, the auxiliary agent is composed of a mixture of sodium alginate and xanthan gum in a weight ratio of 7:0.5.

[0049] The remaining components, dosage of each component, preparation method of the suspension concentrate, and preparation method of the fertilizer in the above embodiment are the same as those in Example 2.

[0050] Examples 6-12

[0051] Examples 6-12 each provide a fertilizer.

[0052] The difference between the above embodiment and embodiment 2 is that the types of fruit powder in the suspension are different, as shown below.

[0053] In Example 6, the fruit powder is sea buckthorn fruit powder.

[0054] In Example 7, the fruit powder is composed of a mixture of sea buckthorn fruit powder and lemon fruit powder in a weight ratio of 1:9.

[0055] In Example 8, the fruit powder is composed of a mixture of lemon fruit powder and mulberry fruit powder in a weight ratio of 1:9.

[0056] In Example 9, the fruit powder is composed of a mixture of sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 0.3:9.

[0057] In Example 10, the fruit powder is composed of a mixture of sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 0.5:9.

[0058] In Example 11, the fruit powder is composed of a mixture of sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 1.5:9.

[0059] In Example 12, the fruit powder is composed of a mixture of seabuckthorn fruit powder and mulberry fruit powder in a weight ratio of 2:9.

[0060] The remaining components, dosage of each component, preparation method of the suspension concentrate, and preparation method of the fertilizer in the above embodiment are the same as those in Example 2.

[0061] Examples 13-14

[0062] Examples 13-14 each provide a fertilizer.

[0063] The difference between the above embodiment and embodiment 2 is that the types of hydroxyethyl cellulose in the suspending agent are different, as shown below.

[0064] In Example 13, the viscosity of hydroxyethyl cellulose is 100-200 mPa·s.

[0065] In Example 14, the viscosity of hydroxyethyl cellulose is 38,000-42,000 mPa·s.

[0066] The remaining components, dosage of each component, preparation method of the suspension concentrate, and preparation method of the fertilizer in the above embodiment are the same as those in Example 2.

[0067] Comparative Example

[0068] Comparative Example 1

[0069] This comparative example provides a fertilizer.

[0070] The difference between this comparative example and Example 2 is that the amounts of the raw material components in the suspending agent are different, as shown in Table 1.

[0071] The types of components, the preparation method of the suspending agent, and the preparation method of the fertilizer in this comparative example are the same as those in Example 2.

[0072] Comparative Example 2

[0073] Comparative Example 2 provides a fertilizer.

[0074] The specific difference between this comparative example and Example 2 is that in the suspending agent, an equal amount of polyacrylamide is used instead of γ-polyglutamic acid; the types and amounts of other raw materials are the same as those in Example 2.

[0075] The specific preparation process of the suspending agent in this comparative example is as follows:

[0076] Respectively weighing corresponding weight portions of silicon dioxide, zinc oxide, hydroxyethyl cellulose (viscosity of 5500-6500 mPa·s), polyacrylamide, fruit powder (the fruit powder is composed of a mixture of sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 1:9), talcum powder filler, and auxiliary agent (the auxiliary agent is composed of a mixture of sodium alginate and xanthan gum in a weight ratio of 7:0.3) and uniformly mixing, and then mixing with water at a solid-liquid weight ratio of 1:2 to obtain a slurry;

[0077] The slurry is subjected to centrifugal spray drying. The specific process conditions of spray drying are: pressure of 2MPa, air inlet temperature of 150℃, and air outlet temperature of 90℃; the spray-dried material is sieved through a 20-100 mesh screen to obtain a dry suspension containing silicon-zinc fertilizer.

[0078] The specific preparation process of fertilizer in this comparative example is as follows:

[0079] Weigh 10 kg of urea, 3 kg of phosphorus pentoxide, 4 kg of oxygen, and 4.8 kg of the dry suspension prepared above, and mix the raw materials to obtain the product.

[0080] Comparative Examples 3-5

[0081] Comparative Examples 3-5 respectively provide a kind of fertilizer.

[0082] In Comparative Example 3: In the suspension, the fruit powder is composed of a mixture of wolfberry fruit powder and lemon fruit powder in a weight ratio of 1:9.

[0083] In Comparative Example 4: In the suspending agent, the auxiliary agent consists of sodium hyaluronate and xanthan gum in a weight ratio of 7:0.3.

[0084] In Comparative Example 5: No hydroxyethyl cellulose, γ-polyglutamic acid, fruit powder, or auxiliary agent was added to the suspending agent.

[0085] The remaining components, dosage of each component, preparation method of the suspension concentrate, and preparation method of the fertilizer in the comparative example are the same as those in Example 2.

[0086] Performance testing

[0087] In a simulated rapeseed pot planting experiment, 0.3% fertilizer (based on soil weight) was added to the soil, mixed thoroughly, and then potted. The soil moisture content was maintained at 25%. 12-18 rapeseed seeds were sown per pot. The seeds were evenly spread on the soil surface and lightly covered with a layer of soil 0.3-0.5 cm thick. At the early stage of rapeseed emergence, the seedlings were thinned out, with three plants of uniform growth remaining in each pot. Harvest was carried out after 36 days of planting. Meanwhile, rapeseed pots were planted in soil without the addition of dry suspension concentrate as a blank control.

[0088] After planting and harvesting, soil organic matter, rapeseed yield, and rapeseed plant quality (plant silicon content, plant zinc content) were tested. The specific testing methods are shown below.

[0089] Soil organic matter: tested in accordance with GB 9834-1988 soil organic matter determination method.

[0090] Wet weight yield of rapeseed: After rapeseed is planted and harvested, it is weighed and counted immediately.

[0091] Rapeseed dry weight yield: After rapeseed is planted and harvested, it is dried and weighed and counted.

[0092] Silicon content in rapeseed plants: Sun-dried rapeseed was used as the test sample and tested in accordance with the industry standard LY / T 1270-1999 "Determination of total silicon, iron, aluminum, calcium, magnesium, potassium, sodium, phosphorus, sulfur, manganese, copper and zinc in forest plants and forest litter".

[0093] Zinc content in rapeseed plants: Sun-dried rapeseed was used as the test sample and tested in accordance with the industry standard LY / T 1270-1999 "Determination of total silicon, iron, aluminum, calcium, magnesium, potassium, sodium, phosphorus, sulfur, manganese, copper and zinc in forest plants and forest litter".

[0094] Test results: as shown in Table 2.

[0095] Table 2 Effects of dry suspension concentrate on soil organic matter properties, rapeseed yield and quality

[0096]

[0097]

[0098] In combination with Table 2, by comparing the test results of Examples 1-14 with those of Comparative Examples 1-5, the present application uses sodium alginate and xanthan gum in a weight ratio of 7:0.1-0.5 as adjuvants, selects one or more of sea buckthorn fruit powder, lemon fruit powder, and mulberry fruit powder as fruit powder, and uses silicon dioxide, zinc oxide, hydroxyethyl cellulose, γ-polyglutamic acid, and fillers as raw materials for the dry suspension agent. The fertilizer prepared is used in the production of crops, which can effectively increase the organic matter content in the soil and ensure the yield and quality of crops.

[0099] In Comparative Example 2, polyacrylamide is used instead of γ-polyglutamic acid in the suspending agent, in Comparative Example 3, the fruit powder in the suspending agent is composed of a mixture of wolfberry fruit powder and lemon fruit powder in a weight ratio of 1:9, in Comparative Example 4, the adjuvant in the suspending agent is composed of sodium hyaluronate and xanthan gum in a weight ratio of 7:0.3, and in Comparative Example 5, no hydroxyethyl cellulose, γ-polyglutamic acid, fruit powder, or adjuvant is added to the suspending agent. The yield of the prepared rapeseed or the silicon and zinc content in the plant is low, which reduces the economic value of the crop.

[0100] By comparing the test results of Examples 1-3 with those of Comparative Example 1, in Comparative Example 1, the dosage ratio of the raw material components in the suspension concentrate was poor, the organic matter content of the fertilized soil was low, and the yield and silicon and zinc content of the rapeseed were low; in contrast, Examples 1-3 of the present application maximized the performance of the suspension concentrate by reasonably ratioing the dosage relationship of the raw material components, thereby obtaining high-yield, high-quality crops.

[0101] By comparing the test results of Example 2 with those of Examples 4-5, the present application chooses to use sodium alginate and xanthan gum in a weight ratio of 7:0.1-0.5 as adjuvants, which can further improve the yield and quality of crops.

[0102] By comparing the test results of Example 2 with those of Examples 6-12, the present application further improves the yield and quality of crops by selecting sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 0.5-1.5:9 as the fruit powder in the suspending agent.

[0103] By comparing the test results of Example 2 with those of Examples 13-14, the present application controls the viscosity of hydroxyethyl cellulose to be 5500-6500 mPa·s, thereby further improving the yield and quality of crops.

[0104] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A dry suspension concentrate containing silicon-zinc fertilizer, characterized in that: Specifically, it is composed of the following components in parts by weight: 24-32 parts of silicon dioxide, 8-12 parts of zinc oxide, 1-3 parts of hydroxyethyl cellulose, 2-5 parts of gamma-polyglutamic acid, 3-7 parts of fruit powder, 20-28 parts of filler, and 0.5-0.8 parts of additives; The auxiliary agent is composed of a mixture of sodium alginate and xanthan gum in a weight ratio of 7:0.1-0.5; The fruit powder is composed of a mixture of sea buckthorn fruit powder and mulberry fruit powder in a weight ratio of 0.5-1.5:9; The viscosity of the hydroxyethyl cellulose is 5500-6500 mPa·s.

2. The dry suspension concentrate containing silicon-zinc fertilizer according to claim 1, characterized in that: Specifically, the invention comprises the following components in parts by weight: 26-30 parts of silicon dioxide, 9-11 parts of zinc oxide, 1.5-2.5 parts of hydroxyethyl cellulose, 3-4 parts of gamma-polyglutamic acid, 4-6 parts of fruit powder, 22-26 parts of fillers, and 0.6-0.7 parts of auxiliary agents.

3. The dry suspension concentrate containing silicon-zinc fertilizer according to claim 1, characterized in that: The auxiliary agent is composed of a mixture of sodium alginate and xanthan gum in a weight ratio of 7:0.2-0.

4.

4. The dry suspension concentrate containing silicon-zinc fertilizer according to claim 1, characterized in that: The filler is selected from one or more of talc, white carbon black, bentonite, calcium carbonate, activated clay and kaolin.

5. The method for preparing the dry suspension concentrate of the silicon-zinc fertilizer according to any one of claims 1 to 4, characterized in that: The specific steps include: Weigh each raw material according to weight, mix evenly, and then mix with water at a solid-liquid weight ratio of 4-7:10 to obtain a slurry; The slurry is subjected to centrifugal spray drying and screening to obtain the dry suspension concentrate containing silicon-zinc fertilizer.

6. The method for preparing a dry suspension concentrate of a silicon-zinc fertilizer according to claim 5, wherein: The specific process parameters of the centrifugal spray drying are: pressure of 1-3 MPa, air inlet temperature of 140-160°C, and air outlet temperature of 80-95°C.

7. A fertilizer, characterized in that A dry suspension concentrate comprising the silicon-zinc fertilizer according to any one of claims 1 to 4.

8. The fertilizer according to claim 7, characterized in that The fertilizer comprises the following components in parts by weight: 8-12 parts of urea, 2-4 parts of phosphorus pentoxide, 3.2-4.8 parts of potassium oxide, and 4.2-5.6 parts of the dry suspension concentrate of the silicon-zinc fertilizer according to any one of claims 1-4.

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