Preparation method of special organic fertilizer for low-nutrient Chinese herbal medicine

Abstract

The application provides a preparation method of an organic fertilizer for Chinese medicinal materials with low nutrient organic matter, and relates to the field of organic fertilizer processing. The organic fertilizer for Chinese medicinal materials with low nutrient organic matter is prepared from the following raw materials in parts by mass: 20-30 parts of fermented and decomposed cow dung, 40-45 parts of grass carbon, and 40-45 parts of fungus package. The preparation method of the organic fertilizer for Chinese medicinal materials with low nutrient organic matter comprises the following steps: mixing the grass carbon, the fungus package and the fermented and decomposed cow dung, crushing them after mixing, and sieving them after crushing to obtain the organic fertilizer for Chinese medicinal materials. The combination of 40% of the grass carbon, 40% of the fungus package and 20% of the fermented and decomposed cow dung can make the grass carbon and the fungus package, which are slowly decomposed, stay in the soil for a longer time, improve the soil, fully utilize the low nutrient characteristics of the grass carbon and the fungus package, and organically combine the slowly decomposed and low nutrient cow dung, so as to meet the low fertilizer requirement of the seedlings of Chinese medicinal materials and promote the growth of the plants.

Description

Technical Field

[0001] This invention relates to the field of organic fertilizer technology, specifically to a method for preparing a special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrient content. Background Technology

[0002] In the cultivation of Chinese medicinal herbs, the application of base fertilizer for perennial rhizomatous plants such as Paris polyphylla, Polygonatum sibiricum, Dipsacus asper, and Angelica sinensis is crucial. These medicinal herbs take 2-4 years from planting to harvest. During the growth period, it is necessary to keep the soil loose, and the application of organic fertilizer plays a vital role.

[0003] The cultivation of Chinese medicinal herbs requires a large amount (4-5 tons / 666㎡) of organic fertilizer as base fertilizer. Existing ordinary organic fertilizers have an organic matter content of more than 45% and a total nutrient content of more than 5%, which are not suitable as base fertilizer for Chinese medicinal herbs. The total nutrient content is too high, reaching 200-250kg per mu. In addition, most Chinese medicinal herbs are wild and have not been domesticated for a long time, which can easily cause fertilizer damage and losses.

[0004] The cultivation of Chinese medicinal herbs requires that organic matter decomposes slowly in the soil and that the content of readily available nutrients is low. In order to meet the needs of production, this application has developed a method for preparing a special organic fertilizer for Chinese medicinal herbs that is low in nutrients, decomposes slowly, and has a good effect on loosening the soil, and produces a special organic fertilizer product for Chinese medicinal herbs.

[0005] In the process of organic fertilizer processing, existing equipment usually does not have a dedicated mixing and crushing function for organic fertilizer. This can lead to clumping of organic fertilizer, resulting in uneven nutrient distribution during actual use. When applied to the soil, this can cause some crops to grow excessively or suffer root burn, while others may experience poor growth due to malnutrition. Furthermore, existing organic fertilizer screening processes typically involve only one screening, which is not very effective. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a method for preparing a special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrient content, which solves the problem of slow nutrient absorption and easy fertilizer damage in the cultivation of Chinese medicinal herbs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrient content, composed of the following raw materials in parts by weight:

[0008] 20-30 parts fermented cow dung, 40-45 parts peat moss, and 40-45 parts mushroom bags;

[0009] The preparation method of this organic fertilizer specifically for low-nutrient Chinese medicinal herbs includes the following steps:

[0010] Peat moss, mushroom bags, and fermented cow dung are mixed and crushed using a mixing and screening device. After crushing, the mixture is sieved using the same device to obtain a special organic fertilizer for Chinese medicinal herbs.

[0011] Preferably, a mixing and screening device for a special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrients, wherein the mixing and screening device is the mixing and screening device used in the preparation method of the special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrients according to claim 1, comprising:

[0012] A mixing device and a screening device are provided. The mixing device includes a mixing chamber. A crushing roller is symmetrically and rotatably connected to the upper part of the mixing chamber. A drive motor is fixed to one end of the crushing roller. The drive motor is connected to a pulley via a belt. The pulley is fixed to one end of a drive rod. The drive rod is rotatably connected to the middle of the mixing chamber. A material discharge bin is provided in the lower part of the mixing chamber. A conical barrel is provided in the lower part of the material discharge bin. A stirring shaft is rotatably connected to the inner side of the conical barrel. A bevel gear two is fixedly connected to the bottom end of the stirring shaft. The bevel gear two meshes with a bevel gear one. The bevel gear one is fixedly connected to the drive rod.

[0013] Preferably, the screening equipment includes:

[0014] The frame has multiple evenly distributed fixed rods symmetrically fixed on both sides of the top of the frame. Movable plates are slidably installed on the outer periphery of the fixed rods on the same side. Rollers are fixedly installed in the middle of the bottom end of each movable plate. Bearing seats are symmetrically fixed on the middle of both sides of the top of the frame. A rotating shaft is installed on the side of each pair of bearing seats that are close to each other. A cam is fixedly installed in the middle of the outer periphery of each rotating shaft. A drive mechanism is provided on the front side of the frame.

[0015] Guide rails are symmetrically fixedly installed on both sides of the top center of the frame. A screen box is slidably installed in the guide rails. A screen plate is fixedly installed in the screen box. Connecting plates are fixedly installed on both sides of the screen box. The upper part of the connecting plate is fixedly installed on the bottom end of the movable plate on the same side.

[0016] The feeding mechanism includes a collection box, which is fixedly installed on the lower front side of the screen box. Feeding pipes are symmetrically fixedly installed on the front side of the collection box. Conveying pumps are fixedly installed on the front outer periphery of each feeding pipe, and each conveying pump is fixedly installed on the front side of the frame.

[0017] Preferably, a collection box is provided at the top center of the frame and is located directly below the screen box. Each of the fixed rods is fixedly equipped with a baffle. A slot is provided at the lower front side of the screen box. The screen plate is inclined.

[0018] Preferably, springs are fixedly installed on both sides of the bottom center of the movable plate, and the bottom ends of the springs are fixedly installed on the frame. The drive mechanism includes a stepper motor, which is fixedly installed on the front of both sides of the top of the frame. A drive wheel is fixedly installed on the drive end of the stepper motor.

[0019] Preferably, the driving wheels drive the driven wheels on the same side to rotate via belts, and the driven wheels are fixedly installed at the front end of the shaft on the same side.

[0020] Preferably, one side of the conical barrel is connected to an output auger, the end of which penetrates the wall of the mixing chamber and extends therethrough.

[0021] This invention provides a method for preparing a special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrient content. It has the following beneficial effects:

[0022] 1. This invention utilizes "40% low-nutrient peat moss, 40% mushroom bags, and 20% fermented and decomposed cow manure" to better allow the slow-decomposing organic matter of peat moss and mushroom bags to remain in the soil for a longer period, keeping the soil loose and improving its structure. It also fully utilizes the low-nutrient characteristics of peat moss and mushroom bags, and combines them with the slow-decomposing and low-nutrient characteristics of cold-type manure (cow manure), which is suitable for the low nutrient requirements of medicinal herb seedlings, promoting plant growth and improving the quality of medicinal herbs.

[0023] 2. This invention uses a drive motor to rotate intermeshing crushing rollers inward. When the fertilizer passes through the crushing rollers, it is uniformly crushed, achieving effective crushing and avoiding uneven nutrient distribution caused by large particles during fertilizer mixing. After passing through the crushing rollers, the fertilizer falls into the feeding hopper, where a stirring shaft further mixes the fertilizer. During mixing, the drive motor drives a bevel gear one via a belt and pulley, which in turn drives the stirring shaft, ensuring that the organic fertilizer in the conical container is thoroughly mixed and crushed, achieving uniform mixing. The uniformly mixed organic fertilizer is then output by an auger, weighed, and bagged, completing the finished fertilizer processing. Through thorough mixing and crushing of the organic fertilizer, uniform nutrient distribution is achieved, ensuring that the soil receives uniform fertility and replenishes soil organic matter.

[0024] 3. In this invention, workers place the organic fertilizer to be screened into the screen box. At this time, the stepper motor is controlled. The stepper motor, together with the driving wheel, driven wheel, and belt, enables the rotating shaft to drive the cam to rotate. As the cam rotates, with the cooperation of the rollers, the movable plate can move back and forth along the axis of the fixed rod. With the cooperation of the connecting plate, spring, and guide rail, the screen box can vibrate. With the cooperation of the screen plate, the organic fertilizer can be screened. Furthermore, the conveying pump in the feeding mechanism, together with the feeding pipe and the collection box, can suck the screened organic fertilizer back into the screen box. This process can be repeated to screen the organic fertilizer multiple times, improving the screening effect and quality of the organic fertilizer. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a partial structural diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of a partial structure of the cam in this invention;

[0028] Figure 4 This is a partial structural diagram of the feeding mechanism of the present invention;

[0029] Figure 5 This is a perspective view of the mixing device of the present invention;

[0030] Figure 6 This is a cross-sectional view of the mixing device of the present invention;

[0031] Figure 7 This is a three-dimensional structural diagram of the conical barrel of the present invention.

[0032] in,

[0033] The screening equipment components include:

[0034] 1. Collection box; 2. Frame; 3. Bearing seat; 4. Movable plate; 5. Screen box; 6. Baffle; 7. Fixed rod; 8. Spring; 9. Drive mechanism; 91. Stepper motor; 92. Drive wheel; 93. Belt; 94. Driven wheel; 10. Feeding mechanism; 101. Feeding pipe; 102. Conveying pump; 103. Collection box; 11. Roller; 12. Rotating shaft; 13. Cam; 14. Guide rail; 15. Groove; 16. Screen plate; 17. Connecting plate;

[0035] The components of the mixing equipment include: 18. Mixing box; 19. Crushing roller; 20. Drive motor; 21. Belt; 22. Pulley; 23. Drive rod; 24. Bevel gear one; 25. Bevel gear two; 26. Conical barrel; 27. Output auger; 28. Feed hopper; 29. ​​Stirring shaft; 30. Bearing seat; 31. Support frame. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1:

[0038] This invention provides a special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrient content, composed of the following raw materials in parts by weight:

[0039] 20 parts of fermented cow dung, 40 parts of peat moss, and 40 parts of mushroom bags;

[0040] The preparation method of this organic fertilizer specifically for low-nutrient Chinese medicinal herbs includes the following steps:

[0041] Peat moss, mushroom bags, and fermented cow dung are mixed and crushed using a mixing and screening device. After crushing, the mixture is sieved using the same device to obtain a special organic fertilizer for Chinese medicinal herbs.

[0042] Cow manure, waste straw, and superphosphate are mixed with fermentation inoculants and composted at 50 degrees Celsius. During composting, the pile is turned periodically with a turning machine. Fermentation lasts for half a month at 50 degrees Celsius, yielding fermented cow manure. This fermented cow manure is then mixed with peat moss and inoculum bags to obtain a low-nutrient organic fertilizer. In the context of green agriculture and ecological planting, fermented cow manure, as a highly efficient organic fertilizer, is gradually becoming an important auxiliary material for medicinal herb cultivation due to its comprehensive nutrient content and soil-improving properties. The nutrients transformed by microorganisms not only meet the growth needs of medicinal plants but also increase the content of active ingredients in the herbs. The core nutrient composition of cow manure: Nitrogen, phosphorus, and potassium. Basic nutrients: Fermented cow manure contains nitrogen (0.3%-0.45%), phosphorus (0.15%-0.25%), and potassium (0.1%-0.15%), which can specifically supplement the needs of different growth stages. For example, root and rhizome medicinal herbs (such as Astragalus membranaceus) require phosphorus and potassium to promote swelling, while leafy herbs (such as peppermint) require nitrogen to promote stem and leaf growth. Organic matter (14.5%-25%): Improves soil structure and alleviates compaction, especially suitable for medicinal herbs that cannot be continuously cropped (such as Rehmannia glutinosa). Micronutrients and bioactivity: Elements such as calcium, magnesium, and iron can regulate plant metabolism and indirectly affect the synthesis of medicinal components (such as flavonoids and alkaloids). Beneficial microorganisms such as actinomycetes and Bacillus produced during fermentation can inhibit soil-borne pathogens (such as root rot) and reduce the use of chemical pesticides. Safety advantages: Fully decomposed cow manure has low heavy metal content (meets NY 525-2021 standards), and pathogens and weed seeds are inactivated by high temperature, meeting the GAP requirements for medicinal herb cultivation. Base fertilizer treatment: Apply 2-3 tons of decomposed cow manure per acre and deep plow to 20-30cm, suitable for soil improvement before planting. Topdressing optimization: Before flowering, wood ash (for potassium supplementation) or bone meal (for phosphorus supplementation) can be added to increase the yield of flowering and fruiting medicinal herbs (such as honeysuckle). The rational application of well-rotted cow manure can reduce planting costs and improve the quality of medicinal herbs, making it an important practice for promoting ecological medicinal herb agriculture. Future research should focus on its compatibility with the nutrient requirements of specific medicinal herbs (such as ginseng and notoginseng) to optimize fertilization programs. Peat moss cultivation of medicinal herbs has multiple advantages, especially in ecological protection and improving herb quality. Peat moss is an organic matter formed from the long-term decomposition of plant residues in wetland environments. It is rich in humic acid, cellulose, and various trace elements. Its loose and porous structure significantly improves soil aeration and water retention, making it particularly suitable for the growth of medicinal herbs with well-developed root systems. For example, when planting ginseng and notoginseng, which prefer moist conditions but are susceptible to waterlogging, peat moss can effectively regulate soil moisture and prevent root rot. Furthermore, the acidic environment of peat moss (pH 4.5-6.0) can inhibit the reproduction of pathogens, reduce soil-borne diseases, and lower pesticide usage, meeting the standards for green medicinal herb cultivation. The humic acid in peat moss can also promote the absorption of nitrogen, phosphorus, and potassium by plants, enhance photosynthesis, and indirectly increase the content of effective components in medicinal herbs, such as ginsenosides or flavonoids. Its slow-release nutrient characteristics can reduce the frequency of fertilization and save labor costs.It is worth noting that peat moss is a non-renewable resource and needs to be harvested rationally and combined with alternative materials such as straw and mushroom residue to achieve sustainable development. Overall, peat moss provides a near-wild growing environment for medicinal herbs, making it an ideal choice for enhancing efficacy and economic benefits.

[0043] The results of the field comparison experiment showed that:

[0044] Results of field comparative experiments:

[0045] A field comparison experiment was conducted under the same conditions using the "high organic matter, low nutrient organic fertilizer for Chinese medicinal herbs" of this invention and ordinary organic fertilizer. The application rate was 3000 kg / 666 m². After application to the soil, other management practices were consistent. After 3 years, soil looseness remained good, indicating safety for the Chinese medicinal herbs and a 32.6% increase in yield; quality was also improved. In contrast, the application rate of ordinary organic fertilizer was 3000 kg / 666 m², resulting in fertilizer damage in the first year and a 42.6% yield reduction.

[0046] Results of the field demonstration:

[0047] The "high organic matter, low nutrient Chinese medicinal herb special organic fertilizer" of this invention was used on 20 hectares at an application rate of 3000-4000 kg / 666㎡. After being applied to the soil during land preparation, and with other management measures being consistent, the yield and quality of the product were significantly improved compared with the control group, with a growth rate of 12.8%-22.4%, which was quite good.

[0048] Example 2:

[0049] Reference Figure 1-7 As shown, this embodiment of the invention provides a mixing and screening device for organic fertilizer specifically for low-nutrient Chinese medicinal herbs, comprising:

[0050] The mixing equipment includes a mixing chamber 18. A crushing roller 19 is symmetrically rotatably connected to the upper part of the mixing chamber 18. A drive motor 20 is fixed to one end of the crushing roller 19. The drive motor 20 is connected to a pulley 22 via a belt 21. The pulley 22 is fixed to one end of a drive rod 23. The drive rod 23 is rotatably connected to the middle part of the mixing chamber 18. A discharge bin 28 is provided in the lower part of the mixing chamber 18. A conical barrel 26 is provided in the lower part of the discharge bin 28. A stirring shaft 29 is rotatably connected to the inner side of the conical barrel 26. A bevel gear 25 is fixedly connected to the bottom end of the stirring shaft 29. The bevel gear 25 meshes with a bevel gear 24. The bevel gear 24 is fixedly connected to the drive rod 23. The driving wheel 92 drives the driven wheel 94 on the same side to rotate via a belt 93. The driven wheel 94 is fixedly installed at the front end of the rotating shaft 12 on the same side. One side of the conical barrel 26 is connected to an output auger 27, the end of which penetrates the wall of the mixing box 18 and extends thereafter.

[0051] In actual use of the mixing equipment, organic fertilizer is first put into the mixing box 18. The drive motor 20 drives the meshing crushing rollers 19 to rotate inward. When the fertilizer passes through the crushing rollers 19, it is evenly squeezed and crushed, realizing the effective crushing of the fertilizer. This avoids large particles in the fertilizer mixture, which may cause uneven nutrient distribution during fertilization. After the fertilizer passes through the crushing rollers 19, it falls into the feeding bin 28. The stirring shaft 29 in the feeding bin 28 can mix the fertilizer again. During the mixing process, the drive motor 20 drives the bevel gear 24 to drive the bevel gear 25 through the belt 21 and pulley 22. The bevel gear 25 drives the stirring shaft 29 to ensure that the organic fertilizer in the conical barrel 26 is fully mixed and crushed, and mixed evenly. After being mixed evenly, the organic fertilizer is output by the output auger 27, then weighed and bagged to realize the finished fertilizer processing.

[0052] Screening equipment includes:

[0053] The frame 2 has multiple evenly distributed fixed rods 7 symmetrically fixed on both sides of its top end. Movable plates 4 are slidably installed on the outer periphery of the fixed rods 7 on the same side. Rollers 11 are fixedly installed in the middle of the bottom end of each movable plate 4. Bearing seats 3 are symmetrically fixed on the middle of both sides of the top end of the frame 2. A rotating shaft 12 is installed on the side of each pair of bearing seats 3 that are close to each other. A cam 13 is fixedly installed in the middle of the outer periphery of each rotating shaft 12. A drive mechanism 9 is provided on the front side of the frame 2. By controlling the drive mechanism 9, the rotating shaft 12 can rotate. Since there is a cam 13 on the rotating shaft 12, the cam 13 can continuously abut against the roller 11 while rotating. As a result, the movable plate 4 can move back and forth along the axis of the fixed rods 7. At this time, the connecting plate 17 will drive the screen box 5 to move up and down along the guide rail 14. At this time, the screen box 5, together with the screen plate 16, can drive the fertilizer in the box to vibrate and screen.

[0054] Guide rails 14 are symmetrically fixedly installed on both sides of the top center of the frame 2. A screen box 5 is slidably installed inside the guide rails 14. A screen plate 16 is fixedly installed inside the screen box 5. Connecting plates 17 are fixedly installed on both sides of the screen box 5. The upper part of the connecting plates 17 is fixedly installed on the bottom of the movable plate 4 on the same side. Feeding mechanism 10 includes a collection box 103, which is fixedly installed on the lower front side of the screen box 5. Feeding pipes 101 are symmetrically fixedly installed on the front side of the collection box 103. Conveying pumps 102 are fixedly installed on the front periphery of the feeding pipes 101. Conveying pumps 102 are fixedly installed on the front side of the frame 2. A collection box 1 is provided in the middle of the top of the frame 2 and is located directly below the screen box 5. Baffles 6 are fixedly installed on the top of the fixing rods 7. A slot 15 is provided in the lower front side of the screen box 5. The screen plate 16 is inclined. Springs 8 are fixedly installed on both sides of the bottom center of the movable plate 4, and the bottom ends of the springs 8 are fixedly installed on the frame 2. Since the screen plate 16 is inclined, when the screen box 5 vibrates, the fertilizer that meets the screening conditions of the screen plate 16 will fall into the collection box 1. Since the screening of the screen plate 16 is uneven, the fertilizer that does not pass through the screen plate 16 will contain fertilizer that meets the conditions. At this time, the fertilizer on the screen plate 16 will enter the collection box 103 through the slot 15. With the help of the feeding mechanism 10, the fertilizer that does not meet the screening conditions can be fed back into the screen box 5 for secondary screening, thereby improving the screening efficiency and quality and obtaining organic fertilizer with good uniformity.

[0055] The drive mechanism 9 includes a stepper motor 91, which is fixedly installed on the front of both sides of the top of the frame 2. The drive end of the stepper motor 91 is fixedly installed with a drive wheel 92. When the organic fertilizer on the screen plate 16 enters the collection box 103, the conveying pump 102 will form a negative pressure in the feeding pipe 101, thereby using the airflow formed by the gas flow properties to transport the organic fertilizer to the screen box 5, so that the screen box 5 can screen the organic fertilizer multiple times.

[0056] In actual use, the staff puts the organic fertilizer to be screened into the screen box 5. At this time, the stepper motor 91 is controlled. The stepper motor 91, together with the driving wheel 92, the driven wheel 94 and the belt 93, can make the rotating shaft 12 drive the cam 13 to rotate. As the cam 13 rotates, with the cooperation of the roller 11, the movable plate 4 can move back and forth along the axis of the fixed rod 7. With the cooperation of the connecting plate 17, the spring 8 and the guide rail 14, the screen box 5 can vibrate. With the cooperation of the screen plate 16, the organic fertilizer can be screened. In addition, the conveying pump 102 in the feeding mechanism 10, together with the feeding pipe 101 and the collection box 103, can suck the screened organic fertilizer back into the screen box 5. This process is repeated to screen the organic fertilizer multiple times, thereby improving the screening effect and quality of the organic fertilizer.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special organic fertilizer for Chinese medicinal herbs with low organic matter content, characterized in that: It consists of the following parts by weight of raw materials: 20-30 parts fermented cow dung, 40-45 parts peat moss, and 40-45 parts mushroom bags; The preparation method of this organic fertilizer specifically for low-nutrient Chinese medicinal herbs includes the following steps: Peat moss, mushroom bags, and fermented cow dung are mixed and crushed using a mixing and screening device. After crushing, the mixture is sieved using the same device to obtain a special organic fertilizer for Chinese medicinal herbs.

2. A mixing and screening device for a special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrients, wherein the mixing and screening device is the mixing and screening device used in the preparation method of the special organic fertilizer for Chinese medicinal herbs with low organic matter and nutrients according to claim 1, characterized in that: include: The mixing equipment and screening equipment include a mixing box (18), a crushing roller (19) is symmetrically rotatably connected to the upper part of the mixing box (18), a drive motor (20) is fixed to one end of the crushing roller (19), the drive motor (20) is connected to a pulley (22) through a belt (21), the pulley (22) is fixed to one end of a drive rod (23), the drive rod (23) is rotatably connected to the middle part of the mixing box (18), a material drop hopper (28) is provided in the lower part of the mixing box (18), a conical barrel (26) is provided in the lower part of the material drop hopper (28), a stirring shaft (29) is rotatably connected to the inner side of the conical barrel (26), a bevel gear two (25) is fixedly connected to the bottom end of the stirring shaft (29), the bevel gear two (25) meshes with a bevel gear one (24), and the bevel gear one (24) is fixedly connected to the drive rod (23).

3. The mixing and screening equipment for a special organic fertilizer for low-nutrient Chinese medicinal herbs according to claim 2, characterized in that: The screening equipment includes: The frame (2) has multiple evenly distributed fixed rods (7) symmetrically fixed on both sides of the top of the frame (2). Movable plates (4) are slidably installed on the outer periphery of the fixed rods (7) on the same side. Rollers (11) are fixedly installed in the middle of the bottom end of the movable plates (4). Bearing seats (3) are symmetrically fixed on the middle of both sides of the top of the frame (2). A rotating shaft (12) is installed on the side of each pair of bearing seats (3) that are close to each other. A cam (13) is fixedly installed in the middle of the outer periphery of the rotating shaft (12). A drive mechanism (9) is provided on the front side of the frame (2). The top center of the frame (2) is symmetrically fixed with guide rails (14) on both sides. A screen box (5) is slidably installed in the guide rail (14). A screen plate (16) is fixedly installed in the screen box (5). A connecting plate (17) is fixedly installed on both sides of the screen box (5). The upper part of the connecting plate (17) is fixedly installed at the bottom of the movable plate (4) on the same side. The feeding mechanism (10) includes a collection box (103), which is fixedly installed on the lower front side of the screen box (5). Feeding pipes (101) are symmetrically fixedly installed on the front side of the collection box (103). Conveying pumps (102) are fixedly installed on the front side of the outer periphery of the feeding pipes (101). The conveying pumps (102) are fixedly installed on the front side of the frame (2).

4. The mixing and screening equipment for a special organic fertilizer for low-nutrient Chinese medicinal herbs according to claim 3, characterized in that: The frame (2) has a collection box (1) at the top center and the collection box (1) is located directly below the screen box (5). The top of each of the fixed rods (7) is fixedly installed with a baffle (6). The lower front side of the screen box (5) has a slot (15). The screen plate (16) is inclined.

5. The mixing and screening equipment for a special organic fertilizer for low-nutrient Chinese medicinal herbs according to claim 3, characterized in that: Springs (8) are fixedly installed on both sides of the bottom center of the movable plate (4). The bottom ends of the springs (8) are fixedly installed on the frame (2). The drive mechanism (9) includes a stepper motor (91). The stepper motor (91) is fixedly installed on the front of both sides of the top of the frame (2). The drive end of the stepper motor (91) is fixedly installed with a drive wheel (92).

6. The mixing and screening equipment for a special organic fertilizer for low-nutrient Chinese medicinal herbs according to claim 5, characterized in that: The driving wheel (92) drives the driven wheel (94) on the same side to rotate via the belt (93), and the driven wheel (94) is fixedly installed at the front end of the rotating shaft (12) on the same side.

7. The mixing and screening equipment for a special organic fertilizer for low-nutrient Chinese medicinal herbs according to claim 1, characterized in that: One side of the conical barrel (26) is connected to an output auger (27), the end of which penetrates the wall of the mixing box (18) and extends therethrough.

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