Production method of growth-promoting granular bio-organic fertilizer

Abstract

The invention provides a production method of a growth-promoting granular bio-organic fertilizer, and relates to the technical field of organic fertilizers. According to the invention, a mixture of bacillus amyloliquefaciens and bagasse is added into a decomposed organic fertilizer for secondary fermentation treatment, then the material after secondary fermentation is subjected to low-temperature drying and then is subjected to granulation treatment, and a potassium fulvic acid aqueous solution is added in the granulation process to be used as a binder, so that the fertilizer efficiency of the biological organic fertilizer is improved; meanwhile, the use amount of a traditional binder is reduced.

Description

Technical Field

[0001] The invention provides a production method of a growth-promoting granular bio-organic fertilizer, belonging to the technical field of organic fertilizers. Background Art

[0002] Bio-organic fertilizer is a new type of fertilizer that is made by mixing animal and plant waste and other materials with microbial flora, and then fermenting and decomposing them.

[0003] Bagasse is the residue left after sugarcane is squeezed for sugar. In order to make efficient use of bagasse, there is currently research on making bagasse into a new type of organic fertilizer, which reduces processing costs and improves economic benefits. For example, in Chinese patent CN202110183784.6, an organic fertilizer containing bagasse is disclosed, which is processed using bagasse, white water, waste mash, bacterial agent, sumac seed meal, phosphate rock powder, and diatomaceous earth as raw materials. The invention makes full use of hemicellulose, cellulose and other substances in bagasse, realizes the utilization of agricultural waste, and makes full use of other industrial waste. The obtained organic fertilizer has the characteristics of fast onset, high fertilizer efficiency and good quality. In Chinese patent CN201610676860.6, a bagasse organic fertilizer and a method for making it are disclosed, which is processed into organic fertilizer using bagasse, bean dregs, straw particles, potassium chloride, urea, and superphosphate as raw materials. This patent combines bean dregs with Chinese medicine dregs, supplemented with appropriate auxiliary materials, so that the matrix nutrition and particle size complement each other, and no other raw materials need to be added to achieve the purpose of promoting growth and increasing yield. In Chinese patent CN201811383934.2, a method for preparing dragon fruit organic fertilizer using sugarcane bagasse is disclosed, which is an organic fertilizer processed from sugarcane bagasse, straw, bean cake, rice bran, diatom mud, poultry and livestock manure, shell powder, fish meal, zucchini seeds, pumpkin seeds, plant ash, and EM bacterial agent as raw materials. It can be seen that the patented technology uses sugarcane bagasse as the main raw material, and uses EM bacterial agents containing a variety of probiotics for fermentation to obtain an organic fertilizer to effectively reduce diseases and improve crop growth resistance to disease and stress.

[0004] Research on existing bio-organic fertilizers found that traditional bio-organic fertilizer production methods usually add functional microorganisms to fertilizers before packaging, which makes them easily inactivated by ammonia fumigation and ion stress, and difficult to colonize in the soil. At the same time, bio-organic granular fertilizers need to be repeatedly dried and heat treated at high temperatures during the granulation process, which further inactivates the microorganisms, thereby affecting the efficiency of the fertilizer and reducing the growth-promoting effect. At the same time, the large amount of binder used makes the production cost of bio-organic fertilizers high. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a method for producing a growth-promoting granular bio-organic fertilizer. The present invention uses bagasse and fulvic acid as organic fertilizer additives to improve the biological activity of the organic fertilizer and reduce the use of binders. At the same time, a bio-organic granular fertilizer can be obtained without high-temperature drying treatment.

[0006] The present invention is achieved by adopting the following technical solutions:

[0007] A method for producing a growth-promoting granular bio-organic fertilizer comprises the following steps:

[0008] Step 1: Mix Bacillus amyloliquefaciens, bagasse and water to obtain a mixture; add the mixture into a fermentation bin filled with decomposed organic fertilizer, stir well and then perform secondary fermentation;

[0009] Step 2: The material after secondary fermentation is transported to the crusher through a conveyor belt for crushing;

[0010] Step 3: The crushed material is screened by a screening machine to obtain the screened material;

[0011] Step 4: taking the undersize material and sending it into a disc granulator, and then adding the potassium humate aqueous solution into the granulator to mix and granulate with the undersize material to obtain granules;

[0012] Step 5: Dry the particles at low temperature to shape them;

[0013] Step 6: The shaped particles are screened and sorted for the second time, and the 4 mm undersize particles are taken; the oversize particles are conveyed to a pulverizer via a conveyor belt for pulverization; the pulverized particles are subjected to steps 4 and 5;

[0014] Step 7: The organic fertilizer particles after secondary screening are sent to a low-temperature dryer via a conveyor belt for secondary low-temperature drying;

[0015] Step 8: After the secondary drying, the fertilizer granules are cooled and packaged.

[0016] Preferably, the water content of the mixture in step 1 is 60%.

[0017] Preferably, the viable bacterial count of Bacillus amyloliquefaciens in step 1 is 20 billion cfu / g.

[0018] Preferably, the mass percentage of Bacillus amyloliquefaciens in the mixture in step 1 is 8%.

[0019] Preferably, the amount of the mixture added in step 1 accounts for 6wt% of the mass of the decomposed organic fertilizer.

[0020] Preferably, the particle size of the material under the sieve in step 3 is 4 mm.

[0021] Preferably, the mass ratio of potassium humate to the sieve undersize in step 4 is 1 to 2:100.

[0022] Preferably, the mass ratio of the fulvic acid aqueous solution to the sieve undersize in step 4 is 1 to 2:100.

[0023] Preferably, the temperature of the low-temperature drying treatment in step 5 and step 7 is 80-100°C.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a production process of growth-promoting granular biological organic fertilizer. In the present invention, bagasse with a total sugar content of 4%-5%, a total carbon content of 40%-60%, and a total nitrogen content of 0.2%-0.5% is added to the decomposed organic fertilizer, so as to increase the available carbon content of the decomposed organic fertilizer, improve C / N, and improve the activity of growth-promoting bacteria in the organic fertilizer. During the aging of the organic fertilizer, the present invention promotes the colonization of functional bacteria in the organic fertilizer by adding bagasse and utilizing the "detonation" principle in the biological fermentation process.

[0026] The present invention adds potassium humate aqueous solution during the material granulation stage as a binder to improve the strength of fertilizer particles. At the same time, the present invention can also promote plant growth by adding potassium humate during the granulation process, and has a significant growth-promoting effect. Biochemical potassium humate interacts with growth-promoting bacteria, which helps to improve the growth-promoting effect of biological organic fertilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a flow chart of the preparation process of the growth-promoting granular bio-organic fertilizer. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the preferred embodiments of the present invention are further described in detail in conjunction with the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] A method for producing a growth-promoting granular bio-organic fertilizer comprises the following steps:

[0031] Step 1: 5 kg of Bacillus amyloliquefaciens (with a viable count of 20 billion cfu / g), 50 kg of bagasse, and 5 L of water are mixed to obtain a mixture; the mixture is added into a fermentation bin containing 1000 kg of decomposed organic fertilizer, and the mixture is fully stirred and then subjected to secondary fermentation, wherein the temperature of the secondary fermentation is about 50° C. and the fermentation time is 7 days;

[0032] Step 2: The material after secondary fermentation is transported to the crusher through a conveyor belt for crushing;

[0033] Step 3: The crushed material is sieved by a sieving machine to obtain a 4 mm undersize material;

[0034] Step 4: taking the undersize material and feeding it into a disc granulator, and then adding a 15% potassium humate aqueous solution into the granulator for mixing and granulating with the undersize material to obtain a granular material, wherein the potassium humate accounts for 2% of the mass of the undersize material;

[0035] Step 5: Dry the particles at 90°C to set them in shape;

[0036] Step 6: The shaped particles are screened and sorted for the second time, and the 4 mm undersize particles are taken; the oversize particles are conveyed to a pulverizer via a conveyor belt for pulverization; the pulverized particles are subjected to steps 4 and 5;

[0037] Step 7: The organic fertilizer particles after secondary screening are sent to a low-temperature dryer via a conveyor belt and subjected to secondary low-temperature drying at 90°C;

[0038] Step 8: After the secondary drying, the fertilizer granules are cooled and packaged.

[0039] Example 2

[0040] A method for producing a growth-promoting granular bio-organic fertilizer comprises the following steps:

[0041] Step 1: 5 kg of Bacillus amyloliquefaciens (with a viable count of 20 billion cfu / g), 50 kg of bagasse, and 5 L of water are mixed to obtain a mixture; the mixture is added into a fermentation bin containing 1000 kg of decomposed organic fertilizer, and the mixture is fully stirred and then subjected to secondary fermentation, wherein the temperature of the secondary fermentation is about 50° C. and the fermentation time is 7 days;

[0042] Step 2: The material after secondary fermentation is transported to the crusher through a conveyor belt for crushing;

[0043] Step 3: The crushed material is sieved by a sieving machine to obtain a 4 mm undersize material;

[0044] Step 4: taking the undersize material and sending it to a disc granulator, and then adding a 20% potassium humate aqueous solution into the granulator for mixing and granulating with the undersize material to obtain a granular material, wherein the potassium humate accounts for 2% of the mass of the undersize material;

[0045] Step 5: Dry the particles at 100°C to set the shape;

[0046] Step 6: The shaped particles are screened and sorted for the second time, and the 4 mm undersize particles are taken; the oversize particles are conveyed to a pulverizer via a conveyor belt for pulverization; the pulverized particles are subjected to steps 4 and 5;

[0047] Step 7: The organic fertilizer particles after secondary screening are sent to a low-temperature dryer via a conveyor belt and subjected to secondary low-temperature drying at 80°C;

[0048] Step 8: After the secondary drying, the fertilizer granules are cooled and packaged.

[0049] Example 3

[0050] A method for producing a growth-promoting granular bio-organic fertilizer comprises the following steps:

[0051] Step 1: 5 kg of Bacillus amyloliquefaciens (with a viable count of 20 billion cfu / g), 50 kg of bagasse, and 5 L of water are mixed to obtain a mixture; the mixture is added into a fermentation bin containing 1000 kg of decomposed organic fertilizer, and the mixture is fully stirred and then subjected to secondary fermentation, wherein the temperature of the secondary fermentation is about 50° C. and the fermentation time is 7 days;

[0052] Step 2: The material after secondary fermentation is transported to the crusher through a conveyor belt for crushing;

[0053] Step 3: The crushed material is sieved by a sieving machine to obtain a 4 mm undersize material;

[0054] Step 4: taking the undersize material and sending it to a disc granulator, and then adding a 20% potassium humate aqueous solution into the granulator for mixing and granulating with the undersize material to obtain a granular material, wherein the potassium humate accounts for 2% of the mass of the undersize material;

[0055] Step 5: Dry the particles at 100°C to set the shape;

[0056] Step 6: The shaped particles are screened and sorted for the second time, and the 4 mm undersize particles are taken; the oversize particles are conveyed to a pulverizer via a conveyor belt for pulverization; the pulverized particles are subjected to steps 4 and 5;

[0057] Step 7: The organic fertilizer particles after secondary screening are sent to a low-temperature dryer via a conveyor belt and subjected to secondary low-temperature drying at 80°C;

[0058] Step 8: After the secondary drying, the fertilizer granules are cooled and packaged.

[0059] The embodiments described above are part of the embodiments of the present invention, rather than all of the embodiments. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A method for producing a growth-promoting granular bio-organic fertilizer, characterized in that: The following steps are involved: Step 1: Mix Bacillus amyloliquefaciens, bagasse and water to obtain a mixture; add the mixture into a fermentation bin filled with decomposed organic fertilizer, stir well and then perform secondary fermentation; Step 2: The material after secondary fermentation is transported to the crusher through a conveyor belt for crushing; Step 3: The crushed material is screened by a screening machine to obtain the screened material; Step 4: taking the undersize material and sending it into a disc granulator, and then adding the potassium humate aqueous solution into the granulator to mix and granulate with the undersize material to obtain granules; Step 5: Dry the particles at low temperature to shape them; Step 6: The shaped particles are screened and sorted for the second time, and the 4 mm undersize particles are taken; the oversize particles are conveyed to a pulverizer via a conveyor belt for pulverization; the pulverized particles are subjected to steps 4 and 5; Step 7: The organic fertilizer particles after secondary screening are sent to a low-temperature dryer via a conveyor belt for secondary low-temperature drying; Step 8: After the secondary drying, the fertilizer granules are cooled and packaged.

2. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 1, characterized in that: The water content of the mixture in step 1 is 60%.

3. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 1, characterized in that: Step 1: The viable bacterial count of Bacillus amyloliquefaciens is 20 billion cfu / g.

4. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 1, characterized in that: The mass percentage of Bacillus amyloliquefaciens in the mixture in step 1 is 8%.

5. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 1, characterized in that: The amount of the mixture added in step 1 accounts for 6wt% of the mass of the decomposed organic fertilizer.

6. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 1, characterized in that: The particle size of the material under the sieve in step 3 is 4 mm.

7. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 1, characterized in that: The mass concentration of the potassium humate aqueous solution in step 4 is 15-20%.

8. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 7, characterized in that: The mass ratio of potassium humate to the sieve material in step 4 is 1 to 2:

100.

9. The method for producing a growth-promoting granular bio-organic fertilizer according to claim 1, characterized in that: The temperature of the low-temperature drying treatment in step 5 and step 7 is 80-100°C.

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