Biological bacterial fertilizer as well as preparation method and application thereof

Abstract

The invention provides a biological bacterial fertilizer and a preparation method and application thereof, the biological bacterial fertilizer comprises a bacterial liquid and a carrier, the bacterial liquid is bacteria or fungi with special functions, and the carrier is a composition prepared from corncob glume, polyvinyl alcohol, sodium bentonite and water. The main raw materials of the carrier are low-cost organic matters, the carrier has strong water retention capacity, can be used as food of microorganisms or small and medium-sized animals in soil, and can help corresponding bacteria or fungi to adapt to severe environments and strengthen specific effects while improving soil quality after being loaded with the bacteria or fungi with specific functions such as salt resistance, sand stabilization, phosphate solubilization, potassium solubilization and bacteriostasis. Therefore, the functions of promoting plant growth, restoring ecology, treating pollution and the like are achieved, and the method has great significance in agricultural development, environmental protection and the like.

Description

Technical Field

[0001] This invention relates to the field of bio-fertilizer technology, and in particular to bio-fertilizers, their preparation methods, and applications. Background Technology

[0002] Microbial fertilizer, also known as microbial fertilizer, is a type of fertilizer containing specific microorganisms. These microorganisms can provide nutrients to plants, improve soil structure, and enhance plant resistance to adverse conditions. Microbial fertilizers are mainly classified into liquid, powder, and granular forms according to their finished product formulation. Liquid fertilizers generally use fermented bacterial liquid or bacterial liquid with added functional agents directly as fertilizer, but they are inconvenient to transport and have poor shelf life and stability. Powder fertilizers are made by mixing bacterial liquid with peat moss, etc. They are easy to transport and have a high bacterial content, but their shelf life is also short, making them difficult to commercialize. Granular fertilizers use carrier materials similar to powder fertilizers, but after granulation and drying, the moisture content is reduced, making them convenient to transport and apply, and they have a longer shelf life, making them easier to commercialize.

[0003] The carrier material for granular microbial fertilizers is usually made of peat moss. Peat moss has a large number of orderly arranged micropores, a large specific surface area, and a strong adsorption capacity, which can provide a good growth and reproduction environment for microorganisms. However, peat moss itself is expensive, and mining peat moss itself will damage the environment, which greatly limits the application and development of bio-fertilizers. Summary of the Invention

[0004] This invention provides a bio-fertilizer, its preparation method, and its application. The carrier of the bio-fertilizer is a special composition prepared from corn husks. The raw materials are widely available and low in cost. The prepared composition, as a bio-fertilizer carrier, has the characteristics of strong water absorption, high organic matter content, good granulation, and strong soil improvement ability. When combined with microorganisms with special functions, it can promote microbial reproduction, improve stability, extend shelf life, and is easy to apply.

[0005] In a first aspect, the present invention provides a microbial fertilizer comprising microbial cells and a carrier, wherein the carrier is a composition containing corn husks, polyvinyl alcohol, sodium bentonite, and water.

[0006] This invention discovers that corn cob husks have a strong water absorption capacity, with tests showing that they can absorb up to 1452.5% of their original weight. They are also rich in nutrients, which can be digested and absorbed by microorganisms, promoting their growth and reproduction. Furthermore, they are widely available and inexpensive, making them very suitable as raw materials for microbial fertilizer carriers.

[0007] Preferably, the composition serving as the carrier in the above-mentioned microbial fertilizer comprises, by weight: 16-22 parts of glumes, 8.3-11.1 parts of polyvinyl alcohol, 8.3-22.2 parts of sodium bentonite, and 44-66 parts of water.

[0008] Preferably, the ratio of carrier to microbial fertilizer in the above-mentioned microbial fertilizer is 8:1 to 32:1.

[0009] Preferably, the bacterial cells are: Bacillus mucilaginosa (Bacillus mucilaginosa). Bacillus mucilaginosus Bacillus subtilis ( Bacillus subtilis ), Bacillus amyloliquefaciens ( Bacillus amyloliquefaciens One or more of the following.

[0010] Secondly, the present invention provides a method for preparing the above-mentioned microbial fertilizer, comprising the following steps: (1) First add the glumes, then add polyvinyl alcohol and sodium bentonite, and stir well; (2) Add all the water at once and stir well; (3) Pour the well-stirred raw materials into the granulator to granulate; (4) Mix the bacterial cells with the carrier.

[0011] Preferably, the microorganisms in the above-mentioned microbial fertilizer are live functional bacteria, which can be bacteria or fungi.

[0012] Preferably, the live bacteria content in the above-mentioned microbial fertilizer is not less than 2 billion / mL.

[0013] Thirdly, the present invention provides the application of the above-mentioned microbial fertilizer in any of the following: (1) Improve soil fertility; (2) Promotes plant growth; (3) Improve plant quality; (4) Improve soil structure; (5) Suppress soil-borne diseases; (6) Ecological restoration or environmental improvement; (7) Waste or pollutant treatment.

[0014] Fourthly, the present invention provides a method for applying the above-mentioned microbial fertilizer, wherein the microbial fertilizer is mixed into the soil and plants are planted.

[0015] Preferably, the microbial fertilizer is incorporated into the soil in the following ways: strip application, hole application, broadcast application, layered application, or application mixed with other fertilizers. The carrier of the aforementioned microbial fertilizer itself has a strong water retention capacity and is rich in organic matter, which can promote the reproduction of microorganisms and small animals in the soil to form a local micro-ecology. After loading microorganisms with specific functions, it can further enhance the function of improving the ecological environment. It can load rhizobia and other bacteria to provide nutrients for plants and promote their growth, or load salt-tolerant, phosphorus-solubilizing, potassium-solubilizing and other bacteria to improve soil quality, or load antibacterial bacteria to biologically control certain soil-borne diseases, or load bacteria that can decompose toxic and harmful substances and use the water absorption capacity of the carrier to adsorb and treat toxic waste or leaked pollution.

[0016] In this embodiment of the invention, the oats treated with microbial fertilizer showed an 82.5% increase in chlorophyll content compared to the control group alone, a 20.4% increase compared to the water-retaining agent alone, and a 30.3% increase compared to the microbial agent alone. The oat plant height in the microbial fertilizer group was 29.3% higher than that in the control group alone, a 6.2% increase compared to the water-retaining agent alone, and an 18.0% increase compared to the microbial agent alone. The soil moisture was not significantly different from that in the water-retaining agent alone group. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0018] Example 1 This embodiment provides a method for preparing the composition.

[0019] The steps for preparing the composition are as follows: The pellet mill can feed a total of 1000g of material at a time.

[0020] (1) Weigh out 1000g of raw materials according to the mass ratio of corn husk: polyvinyl alcohol: sodium bentonite: water of 2:1:2:4.

[0021] (2) First add the glumes, then add polyvinyl alcohol and sodium bentonite, and stir evenly.

[0022] (3) Add water all at once and stir well.

[0023] (4) After the raw materials are evenly mixed, they are poured into a disc granulator (manufacturer: Zhengzhou Huachuang Machinery Co., Ltd., item number HCYP-500) (the speed button is set to 2.5 and the disc tilt angle is 45°) to make water-retaining agent granules by rotation granulation.

[0024] (5) Mix the water-retaining agent granules and the microbial agent at a ratio of 16:1 to obtain the microbial fertilizer, wherein the registration certificate number of the microbial agent is Microbial Fertilizer (2018) Approval No. (4322).

[0025] Example 2 This embodiment provides a test on the growth-promoting effect of the above composition combined with microbial inoculants as microbial fertilizer on oats.

[0026] The experiment was conducted in 16 pots with a diameter of 15 cm. The species was oats, which were divided into 4 groups. The control group received no treatment. The water-retaining agent group received 10 g of water-retaining agent per pot. The microbial inoculant group received 2.5 g of inoculant per pot. The microbial fertilizer group received 10 g of the microbial fertilizer prepared in Example 1. After application, the oats were sown. The chlorophyll content, plant height and soil moisture of the oats were tested 25 days after sowing. The chlorophyll content was detected by a portable chlorophyll meter (SPAD-502). The results are shown in Table 1.

[0027] As shown in Table 1, the leaf chlorophyll content of oats treated with microbial fertilizer increased by 82.5% compared to the control group, by 20.4% compared to the water-retaining agent group, and by 30.3% compared to the microbial agent group. The plant height of oats in the microbial fertilizer group increased by 29.3% compared to the control group, by 6.2% compared to the water-retaining agent group, and by 18.0% compared to the microbial agent group. Soil moisture was not significantly different from that in the water-retaining agent group.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A microbial fertilizer, comprising microbial cells and a carrier, characterized in that... It contains abundant beneficial microorganisms, which can provide fertilizer effects for crops. It has the advantages of low input, long-lasting fertilizer effect, simple application and soil environment improvement. It is applicable to different agricultural planting systems and cultivation systems. The carrier is a composition containing corn husks, polyvinyl alcohol, sodium bentonite and water.

2. The microbial fertilizer according to claim 1, characterized in that, The composition serving as a carrier comprises, by weight: 16-22 parts of glumes, 8.3-11.1 parts of polyvinyl alcohol, 8.3-22.2 parts of sodium bentonite, and 44-66 parts of water.

3. The microbial fertilizer according to claim 1 or 2, characterized in that, The ratio of carrier to microbial fertilizer in the microbial fertilizer is 8:1 to 32:

1.

4. The microbial fertilizer according to claim 1 or 2, characterized in that, The microbial cells in the microbial fertilizer are live functional bacteria, which are either bacteria or fungi.

5. The microbial fertilizer according to claim 1 or 2, characterized in that, The bacterial cells are: Bacillus mucilaginosus (Bacillus mucilaginosus) Bacillus mucilaginosus Bacillus subtilis ( Bacillus subtilis ), Bacillus amyloliquefaciens ( Bacillus amyloliquefaciens One or more of the following.

6. The method for preparing the microbial fertilizer according to any one of claims 1-5, characterized in that, Includes the following steps: (1) First add the glumes, then add polyvinyl alcohol and sodium bentonite, and stir well; (2) Add all the water at once and stir well; (3) Pour the well-stirred raw materials into the granulator to granulate; (4) Mix the bacterial cells with the carrier.

7. The microbial fertilizer according to any one of claims 1-5, characterized in that, The live bacteria content in the microbial fertilizer is no less than 2 billion / mL.

8. The use of the microbial fertilizer according to any one of claims 1-5 in any of the following: (1) Improve soil fertility; (2) Promotes plant growth; (3) Improve plant quality; (4) Improve soil structure; (5) Suppress soil-borne diseases; (6) Ecological restoration or environmental improvement; (7) Waste or pollutant treatment.

9. The method for applying the microbial fertilizer according to any one of claims 1-5, characterized in that, Mix the microbial fertilizer into the soil and plant plants.

10. The method according to claim 9, characterized in that, The microbial fertilizer is incorporated into the soil in the following ways: strip application, hole application, broadcast application, layered application, and application mixed with fertilizer.

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