Equipment for soil environment improvement in greenhouses used in continuous cropping agriculture

Abstract

This invention relates to the field of agricultural production and discloses a soil environment improvement device for continuous cropping greenhouses. The device includes a frame, with a liquid inlet tank fixedly installed on the upper side of the frame. Two baffles are slidably connected to the middle of the liquid inlet tank, and a disc is fixedly connected to the adjacent side of each baffle. A drive assembly is located in the middle of the liquid inlet tank to control the opening and closing of the discs. A mixing tank is fixedly connected to the bottom of the liquid inlet tank, with a mixing assembly located in the middle of the mixing tank. A discharge pipe is fixedly connected to the bottom of the mixing tank. Through the cooperation of the mixing assembly and the drive assembly, the flow rate of the water-fertilizer-inoculant discharge can be controlled, helping to reduce water pollution and soil degradation caused by the loss of the water-fertilizer-inoculant, ensuring that the water-fertilizer-inoculant penetrates deep into the soil, improving soil nutrient distribution, thereby improving soil utilization efficiency and crop growth quality.

Description

Technical Field

[0001] This invention relates to the field of agricultural production, specifically to a soil environment improvement device for continuous cropping greenhouses. Background Technology

[0002] Traditional soil improvement methods mainly include the following aspects: planned crop rotation, regular soil disinfection, soil texture improvement, water-based salt removal, scientific fertilization, and planting salt-tolerant crops. However, most of these methods require the absence of crop cultivation, which significantly reduces work efficiency.

[0003] Most existing soil improvement equipment is used for fertilization and soil treatment inside greenhouses. In practice, this is complex, and the equipment's efficiency is greatly reduced when the crops inside the greenhouse are complex or the ground is uneven. Furthermore, in such situations, existing soil improvement equipment can easily damage crops during operation, affecting their normal growth.

[0004] This device stores the water-fertilizer and microbial agent in a designated storage tank. When needed, the agent is extracted using soil improvement equipment and delivered to the soil near the crop roots. This not only provides essential nutrients to the crop but also enhances crop health and productivity through various means, including improving the soil environment, restoring soil structure and function, inhibiting or antagonizing pathogens, promoting organic matter conversion, and improving crop quality. Furthermore, compared to traditional soil improvement methods and equipment, this device is more operable, economical, and efficient, allowing for immediate transition from one task to the next, and enabling soil improvement without damaging the crop. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a soil environment improvement device for continuous cropping greenhouses, which solves common problems in continuous cropping greenhouses such as soil compaction, salinization, and decreased microbial activity. Through a novel soil environment improvement device, water, fertilizer, and microbial agents are delivered from both sides of the greenhouse to the vicinity of crop roots, while simultaneously loosening the soil with a drill bit, effectively improving soil quality and crop growth environment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A soil environment improvement device for continuous cropping greenhouses, comprising a frame, an inlet tank fixedly installed on the upper side of the frame, two baffles slidably connected to the middle of the inlet tank, and a disc fixedly connected to the adjacent side of each of the two baffles, a drive assembly disposed in the middle of the inlet tank for controlling the switching mode of the discs, a mixing tank fixedly connected to the bottom of the inlet tank, a mixing assembly disposed in the middle of the mixing tank, a discharge pipe fixedly connected to the bottom of the mixing tank, telescopic pipes fixedly connected to both ends of the discharge pipe away from the mixing tank, the telescopic pipe being formed by four pipes connected together, with a cavity formed between adjacent pipes, an air inlet channel opened on the outer side of the telescopic pipe near the discharge pipe, the air inlet channel communicating with the cavity, three adjusting assemblies disposed in the middle of the telescopic pipe, a drill bit fixedly connected to the other side of the adjusting assemblies, and a soil loosening assembly fixedly connected to the bottom of the drill bit.

[0007] Preferably, the stirring assembly includes a support plate, which is fixedly connected to the bottom of the liquid inlet tank. A motor is fixedly connected to the middle of the support plate. A connecting rod is fixedly connected to the output end of the motor. A bevel gear is fixedly connected to the other end of the connecting rod. A stirring impeller is rotatably connected to the middle of the stirring tank. A bevel gear is fixedly connected to the top of the stirring impeller. The two bevel gears mesh with each other.

[0008] Preferably, the adjustment assembly includes an electric push rod two, which is fixedly connected inside the telescopic tube. The output end of the electric push rod two is fixedly connected to a universal joint, and the other side of the universal joint is fixedly connected to a connecting pipe one. A medium channel is opened in the middle of the universal joint. The upper side of the drill bit is fixedly connected to a connecting pipe two, and the connecting pipe one and the connecting pipe two are inserted into each other. An electric push rod three is fixedly connected inside the drill bit, and the output end of the electric push rod three is fixedly connected to a medium flow pipe.

[0009] Preferably, the soil loosening component includes a three-layer toothed structure, the three-layer toothed structure is fixedly connected to the bottom of the drill bit, a steel ball type vibration structure is fixedly connected to the bottom of the three-layer toothed structure, and a small vibrator is fixedly connected inside the drill bit.

[0010] Preferably, the drive assembly includes a second motor, which is fixedly connected to the bottom of the liquid inlet tank. Two synchronous pulleys are rotatably connected inside the liquid inlet tank, and a synchronous belt is fitted around the outer periphery of the two synchronous pulleys. One of the synchronous pulleys is fixedly connected to the output end of the second motor. A connecting plate and a connecting plate are fixedly connected to the inner and outer sides of the synchronous belt, respectively. A sliding plate is fixedly connected to the other side of both the connecting plate and the connecting plate, and the other side of each of the two sliding plates is connected to the two baffles.

[0011] The present invention also provides a method for using soil environment improvement equipment for continuous cropping greenhouses, comprising the following steps:

[0012] Step 1: The water-fertilizer and bacteria agent is stored in the liquid tank. When it is needed, the two synchronous pulleys are rotated simultaneously by the drive motor and the synchronous belt, thereby opening the disc and allowing the water-fertilizer and bacteria agent to enter the mixing tank.

[0013] Step two: The driving motor rotates the impeller under the action of two bevel gears, thereby mixing the water and the water-fertilizer bacteria agent. At this time, the air intake channel pressurizes the telescopic tube, which can retract the telescopic tube. By applying negative pressure to the telescopic tube, the telescopic tube can be extended. At this time, the spacing of the drill bit can be adjusted, and the spraying range can be adjusted as needed.

[0014] Step 3: Drive the electric push rod 2 to make the drill bit enter the soil. At this time, with the cooperation of the soil loosening component and small vibrator, the soil at different depths can be turned over, larger soil clods can be broken up, and soil compaction can be reduced. At the same time, it helps to loosen deeper soil, reduce the direct impact of machinery on the soil, and protect the ecological structure of the soil.

[0015] Preferably, the method of using the driving component includes:

[0016] The drive motor 2 causes one synchronous wheel to rotate, and the connecting plate 1 and connecting plate 2 can open the disc, allowing the stored water-fertilizer and bacteria agent and water to enter the mixing tank.

[0017] Preferably, the method of using the adjustment component includes:

[0018] By driving the electric push rod 2 and using the universal joint, the connecting pipe 1 is driven to rotate the drill bit and extend from the middle of the telescopic pipe. At the same time, the electric push rod 3 sends the drill bit into the soil to work. With the help of the medium channel and the medium flow pipe, the water, fertilizer and bacteria agent are ensured to enter the drill bit. The drill bit can be easily removed, cleaned and replaced by the connecting pipe 1 and connecting pipe 2.

[0019] Preferably, the method of using the stirring assembly includes:

[0020] The motor drives the connecting rod to rotate one of the bevel gears. While rotating, one bevel gear drives the other bevel gear to rotate, thus mixing the water and the fertilizer agent in the impeller.

[0021] This invention provides equipment for improving the soil environment in greenhouses used in continuous cropping agriculture. It has the following beneficial effects:

[0022] 1. This invention, through the cooperation of the stirring component and the driving component, can control the flow rate of the water-fertilizer and microbial agent discharge, which helps to reduce water pollution and soil degradation caused by the loss of water-fertilizer and microbial agent, ensures that the water-fertilizer and microbial agent penetrates into the soil, improves the nutrient distribution of the soil, and thus improves the soil utilization efficiency and crop growth quality.

[0023] 2. This invention improves the operating efficiency of soil improvement equipment by adjusting the components to adapt the drill bit to different soil conditions and terrains, while also enhancing the effect of soil loosening and fertilizer application.

[0024] 3. This invention, through the synergistic effect of the drill bit and the soil loosening component, can effectively break up soil clumps, reduce soil compaction, increase soil aeration and water retention, and enhance the plant's disease resistance and adaptability to adversity. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the driving component of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the stirring assembly of the present invention;

[0028] Figure 4 This is a schematic diagram of the cavity structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the adjustment component of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the soil loosening component of the present invention.

[0031] The components are as follows: 1. Liquid inlet tank; 2. Disc; 3. Frame; 4. Discharge pipe; 5. Mixing tank; 6. Motor 1; 7. Motor 2; 8. Agitator impeller; 9. Synchronous pulley; 10. Synchronous belt; 11. Connecting plate 1; 12. Connecting plate 2; 13. Telescopic pipe; 14. Slide plate; 15. Baffle; 18. Electric push rod 2; 19. Universal joint; 20. Medium channel; 21. Connecting pipe 1; 24. Connecting pipe 2; 25. Medium flow pipe; 26. Drill bit; 27. Electric push rod 3; 28. Three-layer tooth surface structure; 29. ​​Steel ball vibration structure; 30. Support plate; 31. Bevel gear; 32. Connecting rod; 33. Cavity; 34. Air inlet channel. Detailed Implementation

[0032] The technical solutions in 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.

[0033] Please see the appendix Figure 1 - Appendix Figure 6 This invention provides a soil environment improvement device for continuous cropping greenhouses, comprising a frame 3, with a liquid inlet tank 1 fixedly installed on the upper side of the frame 3. The liquid inlet tank 1 stores water and a water-fertilizer-bacterial agent. Two baffles 15 are slidably connected to the middle of the liquid inlet tank 1, and a disc 2 is fixedly connected to the adjacent side of each baffle 15. A drive assembly is provided in the middle of the liquid inlet tank 1 to control the opening and closing of the disc 2, allowing the stored water-fertilizer-bacterial agent to enter the subsequent processing steps. A mixing tank 5 is fixedly connected to the bottom of the liquid inlet tank 1, and a mixing assembly is provided in the middle of the mixing tank 5. The mixing assembly mixes the liquid water-fertilizer-bacterial agent with water to ensure uniform distribution of active ingredients. A discharge pipe 4 is fixedly connected to the bottom of the mixing tank 5, and telescopic pipes 13 are fixedly connected to both ends of the discharge pipe 4 away from the mixing tank 5. The telescopic pipes 13 are formed by connecting four pipes. A cavity 33 is formed between two adjacent pipes. An air inlet channel 34 is provided on the outer side of the telescopic pipe 13 near the discharge pipe 4. The air inlet channel 34 is connected to the cavity 33. Three adjustment components are provided in the middle of the telescopic pipe 13. A drill bit 26 is fixedly connected to the other side of the adjustment components. A soil loosening component is fixedly connected to the bottom of the drill bit 26. With the cooperation of the air inlet channel 34 and the cavity 33, the telescopic pipe 13 can be pressurized and subjected to negative pressure, thereby controlling the extension and retraction of the telescopic pipe 13. The spacing of the drill bit 26 can be adjusted according to the required spraying range, so as to spray water-fertilizer and microbial agent on the soil near the crop while loosening the soil, thereby improving the efficiency of soil environment improvement, improving the continuity of the equipment, and improving the flexibility and adaptability of the equipment. When the equipment is finished, the drill bit 26 can be cleaned by sending clean water into it, eliminating the need for manual cleaning by employees and reducing their workload.

[0034] In a preferred embodiment of the present invention, the stirring assembly includes a support plate 30, which is fixedly connected to the bottom of the liquid inlet tank 1. A motor 6 is fixedly connected to the middle of the support plate 30. A connecting rod 32 is fixedly connected to the output end of the motor 6. A bevel gear 31 is fixedly connected to the other end of the connecting rod 32. A stirring impeller 8 is rotatably connected to the middle of the stirring tank 5. A bevel gear 31 is fixedly connected to the top of the stirring impeller 8. The two bevel gears 31 mesh with each other. The stirring impeller 8 is rotated by driving the motor 6, thereby mixing water and water-fertilizer bacteria agent, improving the mixing efficiency of water-fertilizer bacteria agent and water, reducing the downtime of the equipment, and thus improving the efficiency of soil environment improvement.

[0035] In a preferred embodiment of the present invention, the adjustment assembly includes an electric push rod 218, which is fixedly connected inside the telescopic tube 13. The output end of the electric push rod 218 is fixedly connected to a universal joint 19, and the other side of the universal joint 19 is fixedly connected to a connecting pipe 11. A medium channel 20 is provided in the middle of the universal joint 19. A connecting pipe 24 is fixedly connected to the upper side of the drill bit 26. The connecting pipe 11 and the connecting pipe 24 are inserted and matched. An electric push rod 327 is fixedly connected inside the drill bit 26, and a medium flow pipe 25 is fixedly connected to the output end of the electric push rod 327. Under the action of the connecting pipe 11 and the connecting pipe 24, the drill bit 26 and the telescopic tube 13 can be easily connected and separated, and the drill bit 26 can be quickly replaced. By driving the electric push rod 218, the drill bit 26 is pushed forward, and under the action of the universal joint 19, the drill bit 26 works downward at 120°, so that the drill bit 26 fits the soil, which can improve the effect of soil loosening and fertilizer application.

[0036] In a preferred embodiment of the present invention, the soil loosening component includes a three-layer toothed structure 28, which is fixedly connected to the bottom of the drill bit 26. A steel ball vibrating structure 29 is fixedly connected to the bottom of the three-layer toothed structure 28. A small vibrator is fixedly connected inside the drill bit 26. The three-layer toothed structure 28 can improve the soil turning effect, improve the crushing effect, and improve the looseness of the soil, thereby improving the work efficiency and the soil foundation for crop growth. The steel ball vibrating structure 29 generates fine vibrations through the small vibrator, further dispersing soil particles and reducing the direct impact on the soil, thereby reducing the negative impact of mechanical operations on the soil ecology.

[0037] In a preferred embodiment of the present invention, the driving assembly includes a second motor 7, which is fixedly connected to the bottom of the liquid inlet tank 1. Two synchronous pulleys 9 are rotatably connected inside the liquid inlet tank 1. A synchronous belt 10 is fitted around the outer periphery of the two synchronous pulleys 9. One of the synchronous pulleys 9 is fixedly connected to the output end of the second motor 7. A connecting plate 11 and a connecting plate 2 12 are fixedly connected to the inner and outer sides of the synchronous belt 10, respectively. A sliding plate 14 is fixedly connected to the other side of both the connecting plate 11 and the connecting plate 2 12. The other side of the two sliding plates 14 is connected to two baffles 15, respectively. The synchronous pulley 9 is rotated by driving the second motor 7. When rotating, the connecting plate 11 and the connecting plate 2 12 are driven by the synchronous belt 10 to open the disc 2, so that the water-fertilizer bacteria agent enters the mixing tank 5, thereby controlling the amount of water-fertilizer bacteria agent used and reducing waste.

[0038] The present invention also provides a method for using soil environment improvement equipment for continuous cropping greenhouses, comprising the following steps:

[0039] Step 1: The water-fertilizer and bacteria agent is stored in the liquid tank 1. When it is needed, the two synchronous pulleys 9 are rotated simultaneously by the drive motor 2 7 and the synchronous belt 10, thereby opening the disc 2 and allowing the water-fertilizer and bacteria agent to enter the mixing tank 5.

[0040] Step 2: Drive motor 6 and two bevel gears 31 to rotate the stirring impeller 8, thereby stirring the water and water-fertilizer bacteria agent to mix them. At this time, pressurize the telescopic pipe 13 through the air inlet channel 34, thereby retracting the telescopic pipe 13. By applying negative pressure to the telescopic pipe 13, the telescopic pipe 13 can be extended. At this time, the spacing of the drill bit 26 can be adjusted, and the spraying range can be adjusted as needed.

[0041] Step 3: Drive the electric push rod 218 to make the drill bit 26 enter the soil. At this time, with the cooperation of the soil loosening component and the small vibrator, the soil at different depths can be turned over, larger soil clods can be broken up, and soil compaction can be reduced. At the same time, it helps to loosen deeper soil, reduce the direct impact of machinery on the soil, and protect the ecological structure of the soil.

[0042] In a preferred embodiment of the present invention, the method of using the stirring assembly includes:

[0043] The usage methods of driver components include:

[0044] The drive motor 7 causes one synchronous wheel 9 to rotate, and the connecting plate 11 and connecting plate 22 can open the disc 2, so that the stored water-fertilizer and bacteria agent and water can enter and be sent into the mixing tank 5.

[0045] Please see the appendix Figure 1 - Appendix Figure 3In a preferred embodiment of the present invention, the method of using the adjustment component includes:

[0046] The usage methods of the adjustment components include:

[0047] By driving the electric push rod 218 and the universal joint 19, the connecting pipe 21 drives the drill bit 26 to rotate and the connecting pipe 21 extends from the middle of the telescopic pipe 13. At the same time, the electric push rod 327 sends the drill bit 26 into the soil to work. Under the action of the medium channel 20 and the medium flow pipe 25, the water, fertilizer and bacteria agent are ensured to enter the drill bit 26. The drill bit 26 can be easily removed, cleaned and replaced by the connecting pipe 21 and the connecting pipe 24.

[0048] The usage of the stirring assembly includes:

[0049] The drive motor 6 causes the connecting rod 32 to rotate one of the bevel gears 31. While rotating, one bevel gear 31 can drive the other bevel gear 31 to rotate, thereby causing the stirring impeller 8 to mix water and water-fertilizer bacteria.

[0050] 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. An equipment for soil environment improvement in a continuous cropping agricultural shed, comprising a frame (3), characterized in that: A liquid inlet tank (1) is fixedly installed on the upper side of the frame (3). Two baffles (15) are slidably connected to the middle of the liquid inlet tank (1). A disc (2) is fixedly connected to the side of the two baffles (15) that are close to each other. A drive assembly is provided in the middle of the liquid inlet tank (1). The drive assembly is used to control the switching mode of the disc (2). A stirring tank (5) is fixedly connected to the bottom of the liquid inlet tank (1). A stirring assembly is provided in the middle of the stirring tank (5). A discharge pipe (4) is fixedly connected to the bottom of the stirring tank (5). Telescopic pipes (13) are fixedly connected to both ends away from the mixing tank (5). The telescopic pipe (13) is formed by connecting four pipes, and a cavity (33) is formed between two adjacent pipes. An air inlet channel (34) is opened on the outside of the telescopic pipe (13) near the discharge pipe (4). The air inlet channel (34) and the cavity (33) are connected. Three adjustment components are provided in the middle of the telescopic pipe (13). A drill bit (26) is fixedly connected to the other side of the adjustment components. A soil loosening component is fixedly connected to the bottom of the drill bit (26). The adjustment assembly includes an electric push rod two (18), which is fixedly connected inside the telescopic tube (13). A universal joint (19) is fixedly connected to the output end of the electric push rod two (18). A connecting pipe one (21) is fixedly connected to the other side of the universal joint (19). A medium channel (20) is opened in the middle of the universal joint (19). A connecting pipe two (24) is fixedly connected to the upper side of the drill bit (26). The connecting pipe one (21) and the connecting pipe two (24) are inserted and matched. An electric push rod three (27) is fixedly connected inside the drill bit (26). A medium flow pipe (25) is fixedly connected to the output end of the electric push rod three (27). The soil loosening component includes a three-layer tooth surface structure (28), which is fixedly connected to the bottom of the drill bit (26). A steel ball type vibration structure (29) is fixedly connected to the bottom of the three-layer tooth surface structure (28), and a small vibrator is fixedly connected inside the drill bit (26).

2. The soil environment improvement equipment for continuous cropping greenhouses according to claim 1, characterized in that, The stirring assembly includes a support plate (30), which is fixedly connected to the bottom of the liquid inlet tank (1). A motor (6) is fixedly connected to the middle of the support plate (30). A connecting rod (32) is fixedly connected to the output end of the motor (6). A bevel gear (31) is fixedly connected to the other end of the connecting rod (32). An impeller (8) is rotatably connected to the middle of the stirring tank (5). A bevel gear (31) is fixedly connected to the top of the impeller (8). The two bevel gears (31) mesh with each other.

3. The soil environment improvement equipment for continuous cropping greenhouses according to claim 1, characterized in that, The drive assembly includes a second motor (7), which is fixedly connected to the bottom of the liquid inlet tank (1). The liquid inlet tank (1) has two synchronous pulleys (9) rotatably connected inside. A synchronous belt (10) is fitted around the outer periphery of the two synchronous pulleys (9). One of the synchronous pulleys (9) is fixedly connected to the output end of the second motor (7). A connecting plate (11) and a connecting plate (12) are fixedly connected to the inner and outer sides of the synchronous belt (10), respectively. A sliding plate (14) is fixedly connected to the other side of both the connecting plate (11) and the connecting plate (12). The other side of the two sliding plates (14) is connected to the two baffles (15), respectively.

4. A method of using equipment for soil environment improvement in continuous cropping greenhouses, characterized in that, Using the soil environment improvement equipment for continuous cropping greenhouses according to any one of claims 1-3 includes the following steps: Step 1: The water-fertilizer bacteria agent is stored in the liquid tank (1). When it is needed, the two synchronous pulleys (9) are rotated simultaneously by the drive motor (7) and the synchronous belt (10), thereby opening the disc (2) and allowing the water-fertilizer bacteria agent to enter the mixing tank (5). Step 2: Drive motor 1 (6) and two bevel gears (31) to rotate the stirring impeller (8), thereby stirring the water and water fertilizer agent to mix them. At this time, pressurize the telescopic pipe (13) through the air inlet channel (34), thereby shrinking the telescopic pipe (13). By applying negative pressure to the telescopic pipe (13), the telescopic pipe (13) can be extended. At this time, the spacing of the drill bit (26) can be adjusted, and the spraying range can be adjusted as needed. Step 3: Drive the electric push rod 2 (18) to make the drill bit (26) enter the soil. At this time, with the cooperation of the loosening component and the small vibrator, the soil at different depths can be turned over, larger soil clods can be broken up, and soil compaction can be reduced. At the same time, it helps to loosen deeper soil, reduce the direct impact of machinery on the soil, and protect the ecological structure of the soil.

5. The method of using the soil environment improvement equipment for continuous cropping greenhouses according to claim 4, characterized in that, The method of using the driving component includes: The drive motor (7) causes one of the synchronous wheels (9) to rotate, and under the action of the connecting plate (11) and the connecting plate (12), the disc (2) can be opened, so that the stored water fertilizer and water can be sent into the mixing tank (5).

6. The method of using the soil environment improvement equipment for continuous cropping greenhouses according to claim 4, characterized in that, The method of using the adjustment component includes: By driving the electric push rod two (18) and under the action of the universal joint (19), the connecting pipe one (21) drives the drill bit (26) to rotate and the connecting pipe one (21) extends out from the middle of the telescopic pipe (13). At the same time, the electric push rod three (27) sends the drill bit (26) into the soil to work. Under the action of the medium channel (20) and the medium flow pipe (25), the water, fertilizer and bacteria agent are ensured to enter the drill bit (26). Under the action of the connecting pipe one (21) and the connecting pipe two (24), the drill bit (26) can be easily removed, cleaned and replaced.

7. The method of using the soil environment improvement equipment for continuous cropping greenhouses according to claim 4, characterized in that, The method of using the stirring assembly includes: The drive motor (6) causes the connecting rod (32) to rotate one of the bevel gears (31). While rotating, one of the bevel gears (31) can drive the other bevel gear (31) to rotate, thereby causing the stirring impeller (8) to mix water and water fertilizer bacteria.

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