Special organic compound fertilizer for alfalfa as well as preparation method and application of special organic compound fertilizer

Abstract

The invention relates to a special organic compound fertilizer for alfalfa as well as a preparation method and application thereof, and relates to the technical field of organic fertilizers, the special organic compound fertilizer for alfalfa comprises the following components in parts by weight: 50-60 parts of a basic organic fertilizer, 20-30 parts of a sodium humate-seaweed compound, 15-20 parts of modified phosphorus-potassium ore powder, 0.5-1 part of a phosphate-solubilizing bacterium agent and 0.5-1 part of an alfalfa rhizobium agent. On the basis of the existing basic organic fertilizer, the sodium humate-seaweed compound and the modified phosphorus-potassium ore powder loaded with the appropriate fungicide are mainly added, so that the yield of the alfalfa is remarkably increased, and the special organic compound fertilizer can be used as the special organic compound fertilizer for the alfalfa and is wide in application.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of organic fertilizer, in particular to a special organic compound fertilizer for alfalfa and a preparation method and application thereof. BACKGROUND

[0002] Alfalfa is a high-quality perennial legume forage with many advantages such as rich nutrition, good palatability, high yield, etc., and plays an important role in the livestock industry. It is not only an important high-quality forage for ruminants such as cattle, sheep, etc., which can provide rich protein, vitamins and minerals and other nutrients for them, and promote the growth and development of animals and improve the quality of livestock products. Moreover, alfalfa also has good ecological benefits, with developed root system, which can fix nitrogen, improve soil, reduce soil erosion and improve soil structure, and plays a positive role in ecological restoration and sustainable use of farmland.

[0003] In recent years, with the continuous expansion of the livestock industry, the demand for high-quality forage is also increasing day by day, and the planting area of alfalfa is increasing year by year. However, to achieve high yield, high quality and stable production of alfalfa, the use of fertilizer is one of the key links. At present, the use of fertilizer in the process of alfalfa planting is not optimistic, and there are many problems, which seriously hinder the development of alfalfa industry.

[0004] At present, the traditional alfalfa fertilizer is mainly single inorganic fertilizer or ordinary organic fertilizer. Although inorganic fertilizer can quickly provide the required nutrients for alfalfa, long-term application will bring a series of negative effects. It is easy to cause soil compaction and acidification, destroy the ecological balance of the soil, reduce the soil fertility, and then affect the normal growth of alfalfa root system and the absorption of nutrients. Although ordinary organic fertilizer is rich in organic matter and various nutrients, it can improve the soil structure, but its nutrient release speed is relatively slow. In the critical period of alfalfa growth, it may not be able to provide sufficient nutrients in time, resulting in limited growth of alfalfa and difficult to improve yield. In addition, the fertilizer efficiency of ordinary organic fertilizer is significantly affected by environmental factors, and its fertilizer efficiency varies greatly under different soil conditions and climate environments, which makes it difficult to ensure the stable growth of alfalfa. SUMMARY

[0005] In order to solve the above problems, the present application provides a special organic compound fertilizer for alfalfa and a preparation method and application thereof.

[0006] In the first aspect, the present application provides a special organic compound fertilizer for alfalfa, which comprises, by weight:

[0007] 50-60 parts of basic organic fertilizer, 20-30 parts of sodium humate-seaweed compound, 15-20 parts of modified phosphorus and potassium ore powder, 0.5-1 part of phosphorus-dissolving bacteria inoculum, and 0.5-1 part of alfalfa rhizobium inoculum.

[0008] Further, the special organic compound fertilizer for alfalfa comprises, in parts by weight:

[0009] 55 parts of base organic fertilizer, 25 parts of sodium humate-seaweed compound, 18.5 parts of modified phosphorus-potassium ore powder, 0.8 part of phosphorus-dissolving bacteria agent, and 0.7 part of alfalfa rhizobium agent.

[0010] Further, the base organic fertilizer comprises, in weight ratio, (1-3):(1-2) of mature sheep manure and mature chicken manure.

[0011] The preparation of the sodium humate-seaweed compound comprises the following process:

[0012] The sodium humate and seaweed extract in a weight ratio of (10-15):1 are mixed and ground, then are sprayed with epoxy soybean oil and dried to obtain the sodium humate-seaweed compound.

[0013] Further, the seaweed extract is obtained by reflux extraction of seaweed in water;

[0014] And / or, the epoxy soybean oil is added in a weight of 3-7% of the total weight of the sodium humate and the seaweed extract;

[0015] And / or, the working condition parameters of the mixed grinding include a grinding speed of 100-150 rpm and a grinding time of 30-45 minutes.

[0016] Further, the modified phosphorus-potassium ore powder is obtained by supercritical CO2 swelling treatment of phosphorus-potassium ore powder, and the working condition parameters of the supercritical CO2 swelling treatment include a temperature of 55-65°C, a pressure of 20-25 Mpa, and a time of 60-90 minutes.

[0017] Further, the number of viable bacteria in the phosphorus-dissolving bacteria agent and the alfalfa rhizobium agent is ≥100 billion / g.

[0018] In a second aspect based on the same inventive concept, the present application provides a preparation method of the special organic compound fertilizer for alfalfa according to any one of the first aspect.

[0019] The phosphorus-dissolving bacteria agent and the alfalfa rhizobium agent are added to the phosphate buffer solution for dilution to obtain a mixed solution;

[0020] The mixed solution is sprayed onto the surface of the modified phosphorus-potassium ore powder, and then is air-dried at room temperature to obtain a compound bacteria agent;

[0021] The compound bacteria agent, the base organic fertilizer, and the sodium humate-seaweed compound are stirred and mixed to obtain the special organic compound fertilizer for alfalfa.

[0022] Further, the pH of the phosphate buffer is 6.8-7.2.

[0023] And / or, the dilution multiple is 20-30 times.

[0024] In a third aspect, based on the same inventive concept, the present application provides an application of the alfalfa special-purpose organic compound fertilizer of any one of the first aspect or the alfalfa special-purpose organic compound fertilizer prepared by the preparation method of any one of the second aspect in alfalfa planting.

[0025] The above technical solution provided by the embodiments of the present application has at least the following advantages compared with the prior art:

[0026] The alfalfa special-purpose organic compound fertilizer provided by the embodiments of the present application, on the basis of the existing base organic fertilizer, mainly by adding sodium humate-seaweed compound and modified phosphorus-potassium ore powder loaded with suitable microbial agents, the yield of alfalfa is significantly improved, which can be used as alfalfa special-purpose organic compound fertilizer and has wide application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased from the market or prepared by existing methods. At the same time, the steps and parameters involved in the present application, if there is no special limitation or specific description, can be prepared according to the existing technical preparation process or directly used in the existing equipment, and the present application document will not be described one by one.

[0029] The present application will be further described below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present application and not to limit the scope of the present application. The experimental methods in the following examples are not specified, which are usually determined according to the national standard. If there is no corresponding national standard, the international standard, the conventional condition or the condition suggested by the manufacturer is used.

[0030] The main raw material information involved in the following examples and comparative examples is as follows:

[0031] The matured sheep manure is selected from the commercially available product of Qinghai Fulu Agricultural and Pastoral Development Co., Ltd.

[0032] Composted chicken manure: a commercially available product of Shijiazhuang Chenxue Fertilizer Technology Co., Ltd.

[0033] Sodium humate: a commercially available product of Shanxi Hanlongxuan Sodium Humate Biological Fertilizer Co., Ltd.

[0034] Seaweed extract (self-made): seaweed was crushed and added with water 8 times the weight of seaweed, and then refluxed at 105°C for 60 minutes, twice, and the water extract was concentrated and dried to obtain seaweed extract.

[0035] Sodium humate-seaweed compound (self-made): sodium humate and seaweed extract were mixed and ground at a weight ratio of 12:1, the grinding speed was 120 rpm, and the grinding time was 40 minutes to obtain a mixture; then the mixture was sprayed with epoxy soybean oil, the spraying amount of epoxy soybean oil was 5wt% of the mixture, and then dried to obtain the sodium humate-seaweed compound.

[0036] Modified phosphorus-potassium ore powder (self-made): phosphorus-potassium ore powder was obtained by supercritical CO2 swelling treatment, and the working condition parameters of supercritical CO2 swelling treatment included: temperature 60°C, pressure 22Mpa, time 75 minutes.

[0037] Phosphorus-dissolving bacteria inoculant: the number of viable bacteria is ≥100 billion / g, a commercially available product.

[0038] Rhizobium meliloti inoculant: the number of viable bacteria is ≥100 billion / g, a commercially available product.

[0039] Example 1

[0040] The example provides an organic compound fertilizer special for alfalfa, which comprises, in parts by weight:

[0041] 55 parts of base organic fertilizer, 25 parts of sodium humate-seaweed compound, 18.5 parts of modified phosphorus-potassium ore powder, 0.8 parts of phosphorus-dissolving bacteria inoculant, and 0.7 parts of Rhizobium meliloti inoculant.

[0042] The base organic fertilizer comprises composted sheep manure and composted chicken manure at a weight ratio of 2:1.5.

[0043] The preparation method of the above-mentioned organic compound fertilizer special for alfalfa comprises the following steps:

[0044] The phosphorus-dissolving bacteria inoculant and the Rhizobium meliloti inoculant were added to a phosphate buffer solution with a pH of 7.0 and diluted 25 times to obtain a mixed solution.

[0045] The mixed solution was sprayed onto the surface of the modified phosphorus-potassium ore powder, and then air-dried at room temperature to obtain a compound inoculant.

[0046] The composite microbial agent, the base organic fertilizer and the sodium humate-seaweed complex are stirred and mixed to obtain the special organic compound fertilizer for alfalfa.

[0047] Example 2

[0048] The example provides a special organic compound fertilizer for alfalfa, which comprises, in parts by weight:

[0049] The base organic fertilizer 50 parts, the sodium humate-seaweed complex 20 parts, the modified phosphorus-potassium ore powder 15 parts, the phosphorus-dissolving bacteria agent 0.5 parts and the alfalfa rhizobium bacteria agent 0.5 parts;

[0050] The base organic fertilizer comprises, in weight ratio, 1:1 of the mature sheep manure and the mature chicken manure.

[0051] The preparation method of the special organic compound fertilizer for alfalfa is the same as that in Example 1.

[0052] Example 3

[0053] The example provides a special organic compound fertilizer for alfalfa, which comprises, in parts by weight:

[0054] The base organic fertilizer 60 parts, the sodium humate-seaweed complex 30 parts, the modified phosphorus-potassium ore powder 20 parts, the phosphorus-dissolving bacteria agent 1 part and the alfalfa rhizobium bacteria agent 1 part;

[0055] The base organic fertilizer comprises, in weight ratio, 3:2 of the mature sheep manure and the mature chicken manure.

[0056] The preparation method of the special organic compound fertilizer for alfalfa is the same as that in Example 1.

[0057] Comparative Example 1

[0058] The example provides a special organic fertilizer for alfalfa, specifically the base organic fertilizer in Example 1.

[0059] The preparation of the special organic fertilizer for alfalfa comprises: stirring and mixing the mature sheep manure and the mature chicken manure in a weight ratio of 1:1.

[0060] Comparative Example 2

[0061] The example provides a special organic fertilizer for alfalfa, which comprises, in parts by weight: the base organic fertilizer 50 parts in Example 1 and the sodium humate-seaweed complex 20 parts in Example 1.

[0062] The preparation of the special organic fertilizer for alfalfa comprises: stirring and mixing the base organic fertilizer and the sodium humate-seaweed complex.

[0063] Comparative Example 3

[0064] The example provides an organic fertilizer special for alfalfa, which comprises 50 parts by weight of the base organic fertilizer in Example 1, 15 parts by weight of the modified phosphorus-potassium ore powder in Example 1, 0.5 parts by weight of the phosphorus-dissolving bacteria agent in Example 1, and 0.5 parts by weight of the alfalfa rhizobium agent in Example 1.

[0065] The preparation of the above-mentioned organic fertilizer special for alfalfa comprises: diluting the phosphorus-dissolving bacteria agent and the alfalfa rhizobium agent in a phosphate buffer solution with a pH of 7.0 by 25 times to obtain a mixed solution; spraying the mixed solution onto the surface of the modified phosphorus-potassium ore powder, and then air-drying at room temperature to obtain a composite bacteria agent; and stirring and mixing the base organic fertilizer and the composite bacteria agent.

[0066] Test example

[0067] The example tests the fertilizer efficiency of the organic composite fertilizers obtained in Examples 1-3 and Comparative Examples 1-3 above as special fertilizers for alfalfa planting. Each test group is set with 3 repetitions, and a total of 18 test areas are set. The above-mentioned organic composite fertilizers are separately applied in each test area. The application method is as follows: base fertilizer application amount 60.5 kg / hm 2 , topdressing application amount 60.5 kg / hm 2 at the greening period, topdressing 47.0 kg / hm 2 after mowing, and each test area is separately fertilized according to the designed fertilizer type. The fertilizers are uniformly spread on the ground, and water is poured after fertilization. No fertilization is performed at other times. The rest is performed according to the existing alfalfa planting management method. When the alfalfa is in the early flowering stage, three representative sample points are selected by using the diagonal three-point selection method. The sample points are mowed in the 1 m x 1 m quadrat frame, and the fresh weight is measured. The test results are shown in Table 1.

[0068] Table 1

[0069]

[0070]

[0071] As can be seen from Table 1, compared with Comparative Examples 1-3, the organic composite fertilizers obtained in Examples 1-3 of the application significantly improve the yield of alfalfa by adding sodium humate-algal composite and the modified phosphorus-potassium ore powder loaded with suitable bacteria agents. The organic composite fertilizers can be used as special organic composite fertilizers for alfalfa and have a wide range of uses.

[0072] Various embodiments of the present application can take on a variety of scopes; it should be understood that a scope in the form of a range is described merely for the sake of convenience and brevity, and should not be construed as a rigid limitation of the scope of the present application; therefore, it should be considered that the range described has specifically disclosed all possible sub-ranges and single values within that range. For example, it should be considered that a range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integral) within the indicated range.

[0073] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and adaptations will be apparent to those skilled in the art in view of the above descriptions of the embodiments. Thus, the scope of the application should be determined by the broadest interpretation of the principles disclosed herein and their equivalents, and will not be restricted to the described embodiments.

Claims

1. A special organic compound fertilizer for alfalfa, characterized in that, The special organic compound fertilizer for alfalfa comprises, in parts by weight: 50-60 parts of base organic fertilizer, 20-30 parts of sodium humate-seaweed compound, 15-20 parts of modified phosphorus-potassium ore powder, 0.5-1 part of phosphorus-dissolving bacteria agent, and 0.5-1 part of alfalfa rhizobium agent.

2. The special organic compound fertilizer for alfalfa according to claim 1, characterized in that, The special organic compound fertilizer for alfalfa comprises, in parts by weight: 55 parts of base organic fertilizer, 25 parts of sodium humate-seaweed compound, 18.5 parts of modified phosphorus-potassium ore powder, 0.8 part of phosphorus-dissolving bacteria agent, and 0.7 part of alfalfa rhizobium agent.

3. The special organic compound fertilizer for alfalfa according to claim 1 or 2, characterized in that, The base organic fertilizer comprises, in weight ratio, (1-3):(1-2) of mature sheep manure and mature chicken manure.

4. The special organic compound fertilizer for alfalfa according to claim 1 or 2, characterized in that, The preparation of the sodium humate-seaweed compound comprises the following process: The sodium humate and seaweed extract in a weight ratio of (10-15):1 are mixed and ground, and then are sprayed with epoxy soybean oil and dried to obtain the sodium humate-seaweed compound.

5. The special organic compound fertilizer for alfalfa according to claim 4, characterized in that, The seaweed extract is obtained by reflux extraction of seaweed in water; The added amount of the epoxy soybean oil accounts for 3-7 wt% of the total weight of the sodium humate and the seaweed extract; The working condition parameters of the mixing and grinding include a grinding rotation speed of 100-150 rpm and a grinding time of 30-45 minutes.

6. The special organic compound fertilizer for alfalfa according to claim 1 or 2, characterized in that, The modified phosphorus-potassium ore powder is obtained by supercritical CO2 swelling treatment of phosphorus-potassium ore powder, and the working condition parameters of the supercritical CO2 swelling treatment include a temperature of 55-65℃, a pressure of 20-25 Mpa, and a time of 60-90 minutes.

7. The special organic compound fertilizer for alfalfa according to claim 1 or 2, characterized in that, The viable bacterial count of each of the phosphorus-dissolving bacteria agent and the alfalfa rhizobium agent is ≥100 billion / g.

8. A method of producing the special organic compound fertilizer for alfalfa according to any one of claims 1 to 7, characterized by, The preparation method of the special organic compound fertilizer for alfalfa comprises the following steps: The phosphorus-dissolving bacteria agent and the alfalfa rhizobium agent are added to a phosphate buffer solution for dilution to obtain a mixed solution; The mixed solution is sprayed onto the surface of the modified phosphorus-potassium ore powder, and then is air-dried at room temperature to obtain a compound bacteria agent; The compound bacteria agent, the base organic fertilizer, and the sodium humate-seaweed compound are stirred and mixed to obtain the special organic compound fertilizer for alfalfa.

9. The method for preparing alfalfa-specific organic compound fertilizer according to claim 8, characterized in that, The pH of the phosphate buffer solution is 6.8-7.2; The dilution multiple is 20-30.

10. Application of the special organic compound fertilizer for alfalfa according to any one of claims 1-7 or prepared by the preparation method according to any one of claims 8-9 in alfalfa planting.

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