Special organic-inorganic compound fertilizer for flue-cured tobacco

Abstract

The invention discloses a special organic-inorganic compound fertilizer for flue-cured tobacco, and belongs to the technical field of fertilizer production, the special organic-inorganic compound fertilizer for flue-cured tobacco comprises an organic fertilizer and an inorganic compound fertilizer, after the organic fertilizer and the inorganic compound fertilizer are mixed according to a certain proportion, the organic fertilizer raw materials are conveyed to a mixing bin through a conveying mechanism, the conveying mechanism comprises a conveying belt, and the conveying belt is provided with an electronic belt scale; the mixing bin comprises a stirring and feeding spiral device and a granulator, the stirring and feeding spiral device supplies the stirred fertilizer into the granulator, and the organic fertilizer is prepared into granules for later use; the inorganic compound fertilizer is mixed according to a certain ratio and then ground into powder by a grinding machine for later use, the granulated organic fertilizer is conveyed to a mixing device and is stirred and mixed with the inorganic compound fertilizer powder, the use efficiency of the inorganic fertilizer is higher, the powdery fertilizer application is more uniform, the problems caused by single fertilizer application are solved, and the production cost is reduced. The stability of the organic fertilizer, the promoting effect of the microbial fertilizer and the rapid supplementing capacity of the chemical fertilizer are combined.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizer production, in particular to an organic-inorganic compound fertilizer special for flue-cured tobacco. Background Art

[0002] In the flue-cured tobacco industry, there is a widespread problem of excessive use of fertilizers or over-reliance on a single type of fertilizer. This has led to a gradual reduction or even degradation of organic matter and fertility in the soil, compacting the soil and destroying its aggregate structure, which has damaged the ecological balance of the cultivated land, threatening the sustainable development of agriculture, affecting the quality of tobacco leaves, and reducing the income of tobacco farmers.

[0003] Organic fertilizers play a key role in improving the physical properties of soil and increasing soil nutrients. However, the nutrients in organic fertilizers are mainly in organic form, and the content of nitrogen, phosphorus and potassium is relatively low. Therefore, their fertilizer effect is slow. Organic fertilizers alone cannot meet the large demand for these nutrients of tobacco. Therefore, inorganic fertilizers are also needed to meet the needs of tobacco growth.

[0004] The high organic matter content tobacco-specific organic-inorganic compound fertilizer developed by the applicant is a compound fertilizer designed for the special needs of tobacco crops. It provides comprehensive nutritional support for tobacco plants through the mixture of organic and inorganic fertilizers and a specific formula ratio. When this product is used, the organic-inorganic (microorganism) compound fertilizer can fully take into account the fertilizer needs of various crops, overcome the problems caused by single fertilization, and combine the stability of organic fertilizers with the promotion effect of microbial fertilizers and the rapid replenishment ability of chemical fertilizers. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned background technical difficulties and provide an organic-inorganic compound fertilizer specially used for flue-cured tobacco.

[0006] In order to achieve the above purpose, the technical scheme adopted is: an organic-inorganic compound fertilizer for flue-cured tobacco, comprising organic fertilizer and inorganic compound fertilizer, The organic fertilizer includes: soybean meal, oil cake, tea tree cake, straw, distiller's grains, cow dung and other animal and plant residues that have been fermented and decomposed, which are mixed in a certain ratio and then granulated for use; The inorganic compound fertilizer comprises potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate, monoammonium phosphate, magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements. The fertilizers are mixed in a certain ratio and ground into powder by a powder grinder. The granulated organic fertilizer particles are stirred and mixed with the inorganic compound fertilizer powder so that the surface of each organic fertilizer particle is mixed with the inorganic compound fertilizer powder, thereby finally obtaining an organic-inorganic compound fertilizer.

[0007] Further, the organic fertilizer raw material is transported to the mixing bin through a transportation mechanism, the transportation mechanism includes a conveyor belt, the conveyor belt is provided with an electronic belt scale, the mixing bin includes a stirring and feeding screw device and a granulator, the stirring and feeding screw device supplies the stirred fertilizer to the granulator for granulation; the organic fertilizer particles and the inorganic compound fertilizer powder are mixed by a mixing device, a conveyor belt is connected between the granulator and the mixing device, an electric valve is provided at one end of the conveyor belt close to the mixing device, the mixing device includes a shell, the shell includes a feeding port, a mixing chamber and a discharging port from left to right, a transmission mechanism and a spraying mechanism are provided in the mixing chamber, and a leakage net is provided at the discharging port; The spraying mechanism comprises a charging box, the charging box is connected to a feeding pipe, the other end of the feeding pipe is connected to a powder spraying device, and the charging box contains inorganic compound fertilizer powder; The transmission mechanism comprises a horizontally arranged belt transmission mechanism.

[0008] Furthermore, the spraying device is provided with spray gun 1, spray gun 2 and spray gun 3 in sequence near the feeding port and above the belt conveyor mechanism, and the loading box of the spray gun 1 is filled with baking powder, and the baking powder is powder of Bacillus subtilis, Klebsiella pneumoniae and Bacillus mucilaginosus; The loading box of the spray gun 3 is provided with powder of one or more fertilizers selected from the group consisting of potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate and monoammonium phosphate; the spray gun 2 (15) is provided with powder of one or more fertilizers selected from the group consisting of magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements; The spray guns 1 and 2, and between the spray guns 2 and 3 are all provided with liquid spray guns, and the spray gun 3 is provided with a downward-directed fan above the belt conveyor mechanism at one end near the discharge port; The liquid spray gun comprises a vaporizing nozzle and a liquid box. The liquid box is provided with a bonding liquid, and the bonding liquid comprises 5% bonding agent and 95% tannic acid aqueous solution.

[0009] Furthermore, a diverter is provided at one end of the belt conveyor mechanism close to the feeding port, and the diverter includes a diverter plate fixed on the surface of the conveyor belt, and the diverter plate is evenly provided with a plurality of diverter holes, and baffles are provided on both sides of the conveyor belt.

[0010] Furthermore, the belt transmission mechanism includes a conveyor belt, and a plurality of rollers 1-2 cm higher than the conveyor belt surface are fixedly provided on the surface of the conveyor belt. The rollers are provided on the surface of the conveyor belt between spray gun 1 and spray gun 2, spray gun 2 and spray gun 3, and spray gun 3 and fan. The length of the roller is consistent with the width of the conveyor belt, and the transmission mechanism is a reciprocating transmission arrangement.

[0011] Furthermore, the electric valve, spray gun one, spray gun two, spray gun three, liquid spray gun, fan and conveyor belt are all connected to a controller.

[0012] Furthermore, the preparation method of the organic-inorganic compound fertilizer for flue-cured tobacco comprises the following steps: ① Preparation of organic fertilizer: The organic fertilizer raw materials are conveyed through a conveyor belt, and the conveyor belt is connected to an electronic belt scale to measure the conveyed fertilizer. The organic fertilizer raw materials are conveyed to a mixing bin according to the amount. A stirring and feeding screw is provided at the bottom of the mixing bin. The stirring and feeding screw supplies the material to a granulator. The granulator prepares the organic fertilizer into granules for standby use; ② Mixed spraying: The prepared granulated organic fertilizer is transported to the mixing device through a conveyor belt, and the conveying mechanism, spray gun 1, spray gun 2, spray gun 3, liquid spray gun and fan are turned on. The diverter at the conveyor belt near the feeding port of the conveyor mechanism diverts the granular organic fertilizer, and the granules enter the spray gun 1, spray gun 2, spray gun 3 and the bottom of the fan in sequence. The conveyor belt is turned on in a reciprocating setting until the particles are completely covered with powders from spray gun 1, spray gun 2 and spray gun 3, and the sprayed particles are cooled by a fan to remove moisture, so as to obtain organic-inorganic compound fertilizer particles; ③Sieving and packing: After the sprayed powder passes through the mesh at the discharge port, it is sieved and packed.

[0013] Furthermore, the leakage screen is arranged to be tilted downward, a plurality of sieve holes are provided on a surface of the side of the leakage screen close to the fan, a material receiving box is provided below the sieve holes, and a secondary material box is connected to the bottom end of the leakage screen.

[0014] The beneficial effects of adopting the above scheme are as follows: when the organic-inorganic compound fertilizer specially used for flue-cured tobacco is used, the organic matter of the fermented and decomposed organic fertilizer is mixed in a certain proportion, and then weighed by an electronic belt scale on a conveyor belt and transported to a stirring and feeding spiral device for stirring, and then enters a granulator for granulation for standby use; secondly, the inorganic compound fertilizer is ground into powder by a powder grinder for standby use; the granulated organic fertilizer is transported to a mixing device, and the particles of the organic fertilizer are stirred and mixed with the inorganic compound fertilizer, so that the surface of each organic fertilizer particle is attached with inorganic fertilizer powder, thereby obtaining the organic-inorganic compound fertilizer. According to the organic-inorganic compound fertilizer prepared by this method, since the outer wall of the obtained fertilizer particles is an inorganic compound fertilizer powder, when fertilizing, the powdered inorganic fertilizer contacts the soil first, and dissolves with water first after fertilization, and the dissolution effect is better, and different nutrients can be effectively supplied to crops in different growth periods. After a period of time, after the inorganic compound fertilizer powder is dissolved, the organic fertilizer particles supply nutrients to the soil again, and the organic fertilizer particles supply for a long time, which has the effect of improving the soil and increasing soil fertility. After overall application, the use efficiency of inorganic fertilizers is faster, and the powdered fertilizer is more uniform, avoiding excessive fertilization and causing soil compaction, while overcoming the problems caused by single fertilization, combining the stability of organic fertilizers with the promotion of microbial fertilizers and the rapid replenishment ability of chemical fertilizers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the mixing bin and the granulator in the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the mixing device in the present invention.

[0017] Figure 3 for Figure 2 Left view after adding the baffle.

[0018] Figure 4 It is a connection structure diagram of the leakage screen, the material receiving box and the secondary material box in the present invention.

[0019] In the figure, 1. mixing bin; 2. stirring and feeding screw device; 3. granulator; 4. electric valve; 5. conveyor belt; 6. feeding port; 7. conveyor belt; 8. diverter plate; 9. roller; 10. mixing chamber; 11. discharge port; 12. fan; 13. spray gun three; 14. spray gun; 15. spray gun two; 16. spray gun one; 17. shell; 18. diverter hole; 19. baffle; 20. secondary material box; 21. filter screen; 22. receiving box. DETAILED DESCRIPTION

[0020] The technical scheme of the present invention is clearly and completely described below in conjunction with the specific embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1 like Figure 1 , an organic-inorganic compound fertilizer for flue-cured tobacco, comprising organic fertilizer and inorganic compound fertilizer, The organic fertilizer includes: soybean meal, oil cake, straw, distiller's grains, cow dung, animal and plant residues, fermented and decomposed organic matter, which is mixed in a certain ratio and then transported to the mixing bin 1 through a transport mechanism. The transport mechanism includes a conveyor belt 5, and the conveyor belt 5 is provided with an electronic belt scale, such as Figure 1 The mixing bin 1 includes a stirring and feeding screw device 2 and a granulator 3. The stirring and feeding screw device 2 supplies the stirred fertilizer to the granulator 3 to prepare the organic fertilizer into granules for later use; The inorganic compound fertilizer includes: potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate, monoammonium phosphate, magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements. The inorganic compound fertilizer is mixed in a certain ratio and then ground into powder by a powder grinder for later use. The granulated organic fertilizer is transported to a mixing device and stirred with the inorganic compound fertilizer powder so that the surface of each organic fertilizer particle is mixed with the inorganic compound fertilizer powder, thereby finally obtaining an organic-inorganic compound fertilizer.

[0022] In specific implementation, organic fertilizer needs to maintain a certain amount of moisture before granulation.

[0023] The specific implementation method is as follows: when the organic-inorganic compound fertilizer for flue-cured tobacco is used, the organic matter of the fermented and decomposed organic fertilizer is mixed in proportion, and then weighed by an electronic belt scale of a conveyor belt 5 and transported to a stirring and feeding screw device 2 for stirring, and then enters a granulator 3 for granulation for standby use, and then the inorganic compound fertilizer is ground into powder by a powder grinder for standby use, and the granulated organic fertilizer is transported to a mixing device to stir and mix the organic fertilizer particles with the inorganic compound fertilizer, so that the surface of each organic fertilizer particle is attached with inorganic fertilizer powder, thereby obtaining an organic-inorganic compound fertilizer. According to the organic-inorganic compound fertilizer prepared by this method, since the outer wall of the obtained fertilizer particles is an inorganic compound fertilizer powder, when fertilizing, the powdered inorganic fertilizer contacts the soil first, and dissolves with water first after fertilization, and the dissolution effect is better, and different nutrients can be effectively supplied to crops in different growth periods. After a period of time, after the inorganic compound fertilizer powder is dissolved, the organic fertilizer particles supply nutrients to the soil again, and the organic fertilizer particles supply for a long time, which has the effect of improving the soil and increasing soil fertility. After overall application, the use efficiency of inorganic fertilizers is faster, and the powdered fertilizer is more uniform, avoiding excessive fertilization and causing soil compaction, while overcoming the problems caused by single fertilization, combining the stability of organic fertilizers with the promotion of microbial fertilizers and the rapid replenishment ability of chemical fertilizers.

[0024] Embodiment 2 On the basis of Example 1, the applicant found during implementation that when the particles were directly wrapped with inorganic compound fertilizer powder, the amount of each organic fertilizer particle wrapped was very small. The mass ratio of each organic fertilizer particle to each wrapped inorganic fertilizer particle was basically about 1:0.1-0.3, which did not meet the standard for fertilization. Therefore, the applicant made improvements on this issue.

[0025] The applicant connects the granulator 3 and the mixing device with a conveyor belt 5, and the conveyor belt 5 is provided with an electric valve 4 near one end of the mixing device. The mixing device includes a housing 17, and the housing 17 includes a feeding port 6, a mixing chamber 10 and a discharge port 11 from left to right. The mixing chamber 10 is provided with a transmission mechanism and a spraying mechanism, and the discharge port 11 is provided with a leakage screen 21; The spraying mechanism comprises a charging box, the charging box is connected to a feeding pipe, the other end of the feeding pipe is connected to a powder spraying device, and the charging box contains inorganic compound fertilizer powder; The transmission mechanism includes a horizontally arranged belt transmission mechanism. After the application, the mass ratio of each organic fertilizer to each wrapped inorganic fertilizer is basically about 1:0.4-0.5. The effect is better than that of the first embodiment, and the fertilization effect is better after the fertilizer is used.

[0026] Embodiment 3 On the basis of Example 2, the applicant took into account that since there are many types of inorganic compound fertilizers, the applicant wants to match the dissolution rate of the fertilizer according to the environment in which the plants grow after fertilization, and set the organic-inorganic compound fertilizer to be multi-layered, which is more adaptable to the soil, so that the organic fertilizer and inorganic compound fertilizer can truly achieve the ability to quickly supplement and continuously supplement the nutrients to the soil.

[0027] Based on the above, if Figure 1-4 Furthermore, the spraying device is provided with spray gun 1 16, spray gun 2 15 and spray gun 3 13 in sequence near the feeding port 6 and above the belt conveyor mechanism, and the loading box of the spray gun 1 16 is filled with baking powder, and the baking powder is powder of Bacillus subtilis, Klebsiella and Bacillus mucilaginosus; The loading box of the spray gun 3 13 is provided with powder of one or more fertilizers selected from potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate and monoammonium phosphate; the spray gun 2 15 is provided with powder of one or more fertilizers selected from magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements; The spray gun 1 16 and the spray gun 2 15, and the spray gun 2 15 and the spray gun 3 13 are both provided with a liquid spray gun 14, and the spray gun 3 13 is provided with a downward-facing fan 12 above the belt conveyor mechanism at one end close to the discharge port 11; The liquid spray gun 14 comprises a vaporization nozzle and a liquid box. The liquid box is provided with a binder liquid, and the binder liquid comprises 5% binder and 95% tannic acid aqueous solution.

[0028] Furthermore, a diverter is provided at one end of the belt conveyor mechanism close to the feeding port 6, and the diverter includes a diverter plate 8 fixed on the surface of the conveyor belt 7, and the diverter plate 8 is evenly provided with a plurality of diverter holes 18, and baffles 19 are provided on both sides of the conveyor belt 7.

[0029] Furthermore, the belt transmission mechanism includes a conveyor belt 7, and a plurality of rollers 9 that are 1-2 cm higher than the surface of the conveyor belt 7 are fixedly provided on the surface of the conveyor belt 7. The rollers 9 are provided on the surface of the conveyor belt 7 between spray gun 1 16 and spray gun 2 15, spray gun 2 15 and spray gun 3 13, and spray gun 3 13 and fan 12. The length of the rollers 9 is consistent with the width of the conveyor belt 7, and the transmission mechanism is a reciprocating transmission arrangement.

[0030] Furthermore, the electric valve 4, spray gun 1 16, spray gun 2 15, spray gun 3 13, liquid spray gun 14, fan 12 and conveyor belt 7 are all connected to a controller.

[0031] After application, when the applicant uses it, after the organic fertilizer particles enter the mixing device, first the outer wall of the particles is sprayed with baking powder by the spray gun 16, and then the particles start to move after being conveyed by the roller 9 and the conveyor belt 7. The conveyor belt 7 allows the particles to be basically covered with baking powder during reciprocating motion. Then, the particles are sprayed with adhesive by the spray gun 14, and then enter the spray gun 2 15 to spray one or more fertilizer powders of magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements. The conveyor belt 7 allows the particles to be sprayed with adhesive by the spray gun 14. During the reciprocating motion, the particles can be basically covered with the powder sprayed by the spray gun 2 15, and then enter the spray gun 3 13 to be sprayed with the powder of one or more fertilizers such as potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate and monoammonium phosphate. The conveyor belt 7 allows the particles to be basically covered with the powder sprayed by the spray gun 3 13 during the reciprocating motion, so that the particles of the organic fertilizer as a whole contain four layers from the inside to the outside, and then enter the fan 12 to be air-dried by the fan 12, and finally fall into the sieve 21 for screening and packaging, completing the preparation process of the entire organic-inorganic compound fertilizer.

[0032] After application, the mass ratio of the organic fertilizer to the inorganic compound fertilizer in the obtained organic-inorganic compound fertilizer particles is 1-1.5:0.8-1, and the fertilization effect is optimal. At the same time, the fertilizer is arranged in layers, and the powder sprayed by the spray gun 3 13 is used as the outermost layer, and the powder of one or more fertilizers among potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate and monoammonium phosphate is used. In the specific implementation, potassium nitrate and potassium chloride fertilizer powders are selected, which can quickly enhance the nutrition of the soil; After a period of time, the powder sprayed by the spray gun 15 contains one or more fertilizers such as magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements; the powder fertilizer can prevent soil compaction, improve the growth of soil microorganisms and facilitate the absorption of nutrients by crops.

[0033] After a period of time, after the fermentation powder sprayed by the spray gun 16 comes into contact with water, the powders of Bacillus subtilis, Klebsiella and Bacillus subtilis can survive in the soil as soon as possible, increasing the oxygen content in the soil. The higher the oxygen content in the growth environment of the crops, the higher the survival rate of the crops, which makes a significant improvement to the subsequent growth environment of flue-cured tobacco.

[0034] Finally, the organic fertilizer particles are eventually decomposed in the soil, ultimately achieving long-term fertilizer enhancement for the soil.

[0035] During the specific implementation, the applicant prepared the liquid in the liquid spray gun 14 for multiple times, and finally the applicant accidentally discovered that after the tannic acid aqueous solution was sprayed on the fertilizer particles, the tobacco crops turned orange or golden in color, with full color, sufficient oil content, and a stronger aroma after using the fertilizer of the present invention for a period of time.

[0036] In summary, the applicant has found that the organic-inorganic compound fertilizer prepared by the method of the present application has a significant improvement in the soil environment for the growth of flue-cured tobacco, and the fertilizer can make certain changes to the soil environment according to the growth range of the crop, and the soil conditions can maintain high quality for a long time. After overall application, the use efficiency of inorganic fertilizers is faster, and the powdered fertilizer is more uniform, avoiding soil compaction caused by excessive fertilization. At the same time, it overcomes the problems caused by single fertilization, and combines the stability of organic fertilizers with the promoting effect of microbial fertilizers and the rapid replenishment ability of chemical fertilizers.

[0037] Embodiment 4 On the basis of Example 3, the applicant further controls the mass ratio of organic fertilizer and inorganic compound fertilizer, and sets the filter 21 to be tilted downward, and a plurality of sieve holes are provided on the surface of the filter 21 close to the fan 12, and a material receiving box 22 is provided below the sieve holes, and a secondary material box 20 is connected to the bottom of the filter 21. In the specific implementation, if the fertilizer particles in the secondary material box 20 do not meet the mass ratio of organic fertilizer and inorganic compound fertilizer, they can be put into the feeding port 6 again for secondary rework until the requirements are met.

[0038] Embodiment 5 When the above embodiment is implemented, the electric valve 4, spray gun 1 16, spray gun 2 15, spray gun 3 13, liquid spray gun 14, fan 12 and conveyor belt 7 are all connected to a controller. The controller can be realized by the prior art, and the electric valve 4, spray gun 1 16, spray gun 2 15, spray gun 3 13, liquid spray gun 14 and fan 12 can be controlled to operate in coordination when the conveyor belt 7 reciprocates.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all variations falling within the meaning and scope of the same elements of the claims be included in the present invention.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An organic-inorganic compound fertilizer for flue-cured tobacco, characterized by: Including organic fertilizer and inorganic compound fertilizer, The organic fertilizer includes: soybean meal, oil cake, tea tree cake, straw, distiller's grains, cow dung and other animal and plant residues that have been fermented and decomposed, which are mixed in a certain ratio and then granulated for use; The inorganic compound fertilizer comprises potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate, monoammonium phosphate, magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements. The fertilizers are mixed in a certain ratio and ground into powder by a powder grinder. The granulated organic fertilizer particles are stirred and mixed with the inorganic compound fertilizer powder so that the surface of each organic fertilizer particle is mixed with the inorganic compound fertilizer powder, thereby finally obtaining an organic-inorganic compound fertilizer.

2. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 1, characterized in that: The organic fertilizer raw material is transported to the mixing bin (1) by a transport mechanism, the transport mechanism comprising a conveyor belt (5), the conveyor belt (5) being provided with an electronic belt scale, the mixing bin (1) comprising a stirring and feeding screw device (2) and a granulator (3), the stirring and feeding screw device (2) supplying the stirred fertilizer to the granulator (3) for granulation; a mixing device is used when the organic fertilizer particles are mixed with the inorganic compound fertilizer powder, a conveyor belt (5) is connected between the granulator (3) and the mixing device, an electric valve (4) is provided at one end of the conveyor belt (5) close to the mixing device, the mixing device comprises a housing (17), the housing (17) comprising, from left to right, a feeding port (6), a mixing chamber (10) and a discharging port (11), a transmission mechanism and a spraying mechanism are provided in the mixing chamber (10), and a leakage net (21) is provided at the discharging port (11); The spraying mechanism comprises a charging box, the charging box is connected to a feeding pipe, the other end of the feeding pipe is connected to a powder spraying device, and the charging box contains inorganic compound fertilizer powder; The transmission mechanism comprises a horizontally arranged belt transmission mechanism.

3. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 2, characterized in that: The spraying device is provided with spray gun 1 (16), spray gun 2 (15) and spray gun 3 (13) in sequence at the end near the feeding port (6) and above the belt conveyor mechanism. The loading box of the spray gun 1 (16) is filled with baking powder, and the baking powder is powder of Bacillus subtilis, Klebsiella pneumoniae and Bacillus mucilaginosus. The loading box of the spray gun three (13) is provided with powder of one or more fertilizers selected from the group consisting of potassium sulfate, potassium chloride, ammonium nitrate phosphate, potassium nitrate and monoammonium phosphate; the spray gun two (15) is provided with powder of one or more fertilizers selected from the group consisting of magnesium sulfate, zinc sulfate, borax, calcium magnesium phosphate and compounds containing calcium, magnesium, silicon and trace elements; A liquid spray gun (14) is provided between the spray gun 1 (16) and the spray gun 2 (15), and between the spray gun 2 (15) and the spray gun 3 (13); a fan (12) with a downward wind direction is provided above the belt conveyor mechanism at one end of the spray gun 3 (13) close to the discharge port (11); The liquid spray gun (14) comprises a vaporizing nozzle and a liquid box, wherein the liquid box is provided with a bonding liquid, wherein the bonding liquid comprises 5% bonding agent and 95% tannic acid aqueous solution.

4. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 3, characterized in that: A flow diverter is provided at one end of the belt conveyor mechanism close to the feeding port (6), the flow diverter comprising a flow diverter plate (8) fixedly arranged on the surface of the conveyor belt (7), the flow diverter plate (8) being evenly provided with a plurality of diverter holes (18), and baffles (19) are provided on both sides of the conveyor belt (7).

5. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 4, characterized in that: The belt transmission mechanism comprises a conveyor belt (7), a plurality of rollers (9) which are fixedly provided on the surface of the conveyor belt (7) and are 1-2 cm higher than the surface of the conveyor belt (7), the rollers (9) being provided on the surface of the conveyor belt (7) between spray gun 1 (16) and spray gun 2 (15), spray gun 2 (15) and spray gun 3 (13), and spray gun 3 (13) and fan (12), the length of the rollers (9) being consistent with the width of the conveyor belt (7), and the transmission mechanism being a reciprocating transmission arrangement.

6. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 5, characterized in that: The mass ratio of the fermentation powder to the organic fertilizer is 1:60-150, and the mass ratio of the organic fertilizer to the inorganic compound fertilizer is 1-1.5:

1.

7. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 6, characterized in that: The electric valve (4), spray gun 1 (16), spray gun 2 (15), spray gun 3 (13), liquid spray gun (14), fan (12) and conveyor belt (7) are all connected to a controller.

8. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 7, characterized in that: The preparation method of the organic-inorganic compound fertilizer for flue-cured tobacco comprises the following steps: ① Preparation of organic fertilizer: organic fertilizer raw materials are conveyed through a conveyor belt (5), the conveyor belt (5) being connected to an electronic belt scale for measuring the conveyed fertilizer, and the organic fertilizer raw materials are conveyed to a mixing bin (1) according to the amount, and a stirring and feeding screw is provided at the bottom of the mixing bin (1), and the stirring and feeding screw supplies the material to a granulator (3), and the granulator (3) prepares the organic fertilizer into granules for standby use; ② Mixing and spraying: the prepared granulated organic fertilizer is conveyed to the mixing device through the conveyor belt (5), and the conveying mechanism, spray gun 1 (16), spray gun 2 (15), spray gun 3 (13), liquid spray gun (14) and fan (12) are turned on. The diverter at the end of the conveyor belt (7) on the conveying mechanism close to the feeding port (6) diverts the granular organic fertilizer, and the granular organic fertilizer enters the spray gun 1 (16), spray gun 2 (15), spray gun 3 (13) and fan (12) in sequence. During this period, the conveyor belt (7) is turned on in a reciprocating manner until the granules are completely covered with the powder of spray gun 1 (16), spray gun 2 (15) and spray gun 3 (13), and the sprayed granules are cooled by the fan (12) to remove moisture, thereby obtaining organic-inorganic compound fertilizer granules; ③ Screening and packaging: The powder sprayed is screened through the screen (21) at the discharge port (11) and then packaged.

9. The organic-inorganic compound fertilizer for flue-cured tobacco according to claim 8, characterized in that: The filter screen (21) is arranged to be tilted downwards, a plurality of sieve holes are provided on a surface of the filter screen (21) on one side close to the fan (12), a material receiving box (22) is provided below the sieve holes, and a secondary material box (20) is connected to the bottom end of the filter screen (21).

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