Citrus seedling raising device facilitating water vapor regulation

Abstract

The utility model provides a citrus seedling raising device convenient to water vapor regulation, relates to citrus seedling raising device technical field, it includes the outer cylinder of top opening, the outer cylinder bottom is provided with the let -by hole, the outer cylinder is provided with the outer air hole on the side wall close to the bottom, the inner cylinder of top opening is slidably sleeved in the outer cylinder, the inner cylinder slides up and down in the outer cylinder through the sliding assembly, the inner cylinder bottom is provided with the root control hole, the inner cylinder is provided with the inner air hole on the side wall close to the bottom, and the inner air hole can be slid to stagger, half coincide or coincide with the outer air hole, the utility model discloses the coincidence area of inner and outer air holes is changed through the sliding of inner cylinder relative to the outer cylinder, thereby realizing the stepless adjustment of the air permeability of root system growth environment, and the water vapor environment of root system can be dynamically adjusted according to the seedling growth stage, and the operation is very simple and convenient, and simultaneously the root control hole of inner cylinder bottom can carry out air pruning to the root system that extends, and further promotes the development of fibrous root.

Description

Technical Field

[0001] This utility model relates to the technical field of citrus seedling cultivation devices, and in particular to a citrus seedling cultivation device that facilitates water and air regulation. Background Technology

[0002] In the process of citrus seedling cultivation, the core principle lies in promoting seed germination and robust seedling growth through a suitable artificially created environment. This usually begins with the selection and disinfection of citrus seeds, followed by sowing the seeds in a seedling substrate and allowing them to germinate under suitable temperature, humidity, and light conditions. The tender roots absorb water and nutrients in the substrate, while the above-ground parts gradually grow true leaves and complete the crucial lignification process. During this process, precise control of water and oxygen is required to ensure healthy root development and prevent disease, ultimately resulting in high-quality seedlings with well-developed root systems and thick stems that can be used for grafting or planting.

[0003] Currently, the most common method in seedling production is still the use of fixed-structure plastic pots or nutrient pots. These seedling containers are usually one-piece cylindrical shapes. Although there are drainage holes on the side walls and bottom, the diameter and position of the holes are relatively fixed. The internal environment is in a passive management state, and it is impossible to dynamically regulate the water and air environment of the root system according to the growth stage of the seedlings. For example, during the budding stage when moisture needs to be maintained, water may be lost too quickly due to excessive air permeability. During the rooting stage when oxygen demand is high, root development is inhibited due to insufficient air permeability, which ultimately affects the survival and growth efficiency of the seedlings after transplanting. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a citrus seedling raising device that facilitates water and air regulation. This solves the problem that existing seedling raising devices cannot dynamically regulate the root water and air environment according to the growth stage of the seedlings, ultimately affecting the survival and growth efficiency of the seedlings after transplanting.

[0005] According to an embodiment of this utility model, a citrus seedling raising device that facilitates water and air regulation includes an outer cylinder with an open top, a clearance hole at the bottom of the outer cylinder, an external ventilation hole on the side wall of the outer cylinder near the bottom, an inner cylinder with an open top that is slidably fitted inside the outer cylinder, the inner cylinder sliding up and down inside the outer cylinder via a sliding component, a root control hole at the bottom of the inner cylinder, and an internal ventilation hole on the side wall of the inner cylinder near the bottom, the internal ventilation hole being slidable to be offset from, partially overlap with, or overlap with the external ventilation hole.

[0006] The technical principle of this utility model is as follows: First, the seedlings are planted in the inner cylinder. As the seedlings grow, when it is necessary to adjust the water and air environment of the root system, the operator can slide the inner cylinder to move it up and down relative to the outer cylinder. The relative positions between the inner and outer ventilation holes will change accordingly. When the inner and outer ventilation holes are completely offset, the ventilation area is the smallest, which is conducive to keeping the roots warm and moist during the budding period. When the inner and outer ventilation holes gradually overlap, the ventilation area gradually increases. When the inner and outer ventilation holes completely overlap, the ventilation area is the largest, which is conducive to oxygen supply during the rooting period. Thus, the humidity and air permeability of the root system environment can be flexibly adjusted according to different growth stages.

[0007] Furthermore, the external vent holes are arranged in a circumferential array around the outer cylinder.

[0008] Furthermore, the internal vent holes are arranged in a circumferential array around the inner cylinder.

[0009] Furthermore, the sliding assembly includes a sliding ring, with an external thread surrounding the outer side of the sliding ring, and an internal thread that can engage with the external thread surrounding the inner edge of the top of the outer cylinder.

[0010] Furthermore, the inner cylinder is either fixedly connected to or detachably connected to the sliding ring.

[0011] Furthermore, the inner cylinder body overlaps the sliding ring, and the inner cylinder body includes a pair of identical half cylinder bodies. The upper parts of the two half cylinder bodies are coaxially sleeved and fixed by a first limiting ring, and a half ring part is fixedly provided at the bottom of the half cylinder body. The two half ring parts are coaxially sleeved and fixed by a second limiting ring.

[0012] Furthermore, the inner cylinder has several root guide grooves arranged longitudinally along its inner wall.

[0013] Furthermore, the bottom of the inner cylinder is provided with an arc-shaped guide surface, and the root guide groove extends along the arc-shaped guide surface to communicate with the root control hole.

[0014] Furthermore, a scale is fixedly installed on the outer wall of the outer cylinder.

[0015] Furthermore, the bottom of the outer cylinder is fixedly surrounded by several support feet, with ventilation grooves between the support feet.

[0016] Compared with the prior art, this utility model has the following beneficial effects: by sliding the inner cylinder relative to the outer cylinder to change the overlapping area of ​​the inner and outer ventilation holes, the permeability of the root growth environment can be infinitely adjusted. The water and air environment of the root system can be dynamically adjusted according to the growth stage of the seedling, and the operation is very simple and convenient. At the same time, the root control hole at the bottom of the inner cylinder can perform air trimming on the protruding roots, further promoting the development of fibrous roots. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the inner cylinder descending structure according to an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the inner cylinder rising structure according to an embodiment of the present utility model.

[0019] Figure 3 for Figure 2 A schematic diagram of the side cross-section structure.

[0020] Figure 4 This is a schematic diagram of the overall structure of the inner cylinder in another embodiment.

[0021] Figure 5 This is a schematic diagram of the inner cylinder assembly structure according to another embodiment.

[0022] In the above attached figures: 1. Outer cylinder; 11. External vent; 12. Clearance hole; 13. Internal thread; 14. Scale; 15. Support foot; 16. Vent groove; 2. Inner cylinder; 21. Half cylinder; 211. Internal vent; 212. Arc-shaped guide surface; 22. First limiting ring; 23. Control root hole; 231. Half ring; 232. Half thread; 24. Second limiting ring; 241. Fixed thread; 25. Guide root groove; 26. Lifting ring; 3. Sliding ring; 31. External thread; Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1-3 As shown in the figure, this utility model embodiment proposes a citrus seedling raising device that facilitates water and air control. It includes an outer cylinder 1 with an open top and a clearance hole 12 at the bottom. Specifically, the outer cylinder 1 is a cylinder with an open top and a partially open bottom, serving as the main support for the overall structure. An external ventilation hole 11 is provided on the side wall near the bottom of the outer cylinder 1. The external ventilation hole 11 serves not only as a ventilation channel for the roots but also as a window for visually inspecting the soil condition. An inner cylinder 2 with an open top is slidably fitted inside the outer cylinder 1. Specifically, it is a device that... The inner cylinder 1 is a cylinder with a matching inner diameter and a slightly lower height. Its inner and outer walls are smooth and fit with the outer cylinder 1 with a clearance. The inner cylinder 2 slides up and down inside the outer cylinder 1 through a sliding component. A root control hole 23 is provided at the center of the bottom of the inner cylinder 2 to allow roots to extend and prevent spiral root coiling, which would affect the extension and growth of roots after planting. An inner ventilation hole 211 is provided on the side wall of the inner cylinder 2 near the bottom. The outer ventilation hole 11 serves as a ventilation channel for the roots and can slide to be offset from, partially overlap with, or overlap with the outer ventilation hole 11, thereby quickly changing the aeration rate of the soil environment.

[0025] In this exemplary embodiment, the outer cylinder 1 and inner cylinder 2 are preferably made of engineering plastics, such as polypropylene or high-density polyethylene injection molding. The root control hole 23 can perform air pruning on the roots extending from the seedling. The specific principle is as follows: when the roots extend to this point and are exposed to the air, the root tips naturally wither, thereby stimulating the plant to sprout more lateral roots and fibrous roots on the side or behind the withering point, thus further promoting the development of fibrous roots. The root ball after air pruning will have an enhanced ability to absorb water and nutrients after planting. The root control hole 23 can also effectively drain excess water to prevent root saturation. By sliding the inner cylinder 2 relative to the outer cylinder 1, the overlapping area of ​​the inner vent 211 and the outer vent 11 is changed, thereby realizing stepless adjustment of the air permeability of the root growth environment. The water and air environment of the root system can be dynamically adjusted according to the growth stage of the seedling, and the operation is very simple and convenient.

[0026] In this embodiment, the seedlings are first planted in the inner cylinder 2. As the seedlings grow, when it is necessary to adjust the water and air environment of the root system, the operator can slide the inner cylinder 2 to move it up and down relative to the outer cylinder 1. The relative positions between the inner ventilation hole 211 and the outer ventilation hole 11 will change accordingly. When the inner ventilation hole 211 and the outer ventilation hole 11 are completely offset, the air permeability area is the smallest, which is conducive to heat preservation and moisture retention during the budding period. As the inner ventilation hole 211 and the outer ventilation hole 11 gradually overlap, the air permeability area gradually increases. When the inner ventilation hole 211 and the outer ventilation hole 11 are completely overlapped, the air permeability area is the largest, which is conducive to oxygen supply during the rooting period. Thus, the humidity and air permeability of the root system environment can be flexibly adjusted according to different growth stages.

[0027] like Figure 1-3 As shown, in another embodiment, the external vent holes 11 are arranged in a circumferential array around the outer cylinder 1. Specifically, the external vent holes 11 are strip-shaped or circular holes, and are arranged in several groups or rows around the outer cylinder 1 to ensure that no matter where the inner cylinder 2 is located, the inner vent holes 211 can form a uniform and continuous overlapping area with the external vent holes 11, ensuring uniform air permeability. The size, spacing, number and arrangement of the external vent holes 11 are set according to the actual situation and are not limited in this embodiment.

[0028] like Figure 1-3As shown, in another embodiment, the inner ventilation holes 211 are arranged in a circumferential array around the inner cylinder 2. Specifically, the inner ventilation holes 211 are strip-shaped or circular holes, and the inner ventilation holes 211 are arranged in several groups or rows around the inner cylinder 2. When the inner cylinder 2 slides up and down inside the outer cylinder 1, the circumferentially evenly distributed inner ventilation holes 211 can form a continuous and uniform overlapping area with the outer ventilation holes 11, ensuring that the air permeability area around the root system changes synchronously. The size, spacing, number and arrangement of the inner ventilation holes 211 can be set according to the actual situation, and are not limited in this embodiment. It is worth noting that, as an optional arrangement, when both the inner ventilation holes 211 and the outer ventilation holes 11 are set as strip-shaped holes, they are preferably arranged in several rows of longitudinal holes and transverse holes in an alternating manner. Based on the above arrangement, when they overlap, they will form several evenly distributed ventilation holes. While ensuring good and uniform air permeability, it can effectively prevent the leakage of seedling substrate due to excessive overlapping pores.

[0029] like Figure 2-3 As shown, in another embodiment, the sliding assembly includes a sliding ring 3, with an external thread 31 surrounding the outer side of the sliding ring 3. An internal thread 13 that can engage with the external thread 31 is also surrounding the inner edge of the top of the outer cylinder 1. Based on the above configuration, the external thread 31 and the internal thread 13 form a threaded pair. By rotating the sliding ring 3, the axial movement distance of the inner cylinder 2 relative to the outer cylinder 1 can be precisely controlled, achieving stepless adjustment and convenient and stable operation. In some other embodiments, the sliding assembly also includes a lead screw thread structure, with the lead screw rotatably mounted on the outer cylinder 1. Its output end engages with the inner cylinder 2 threadedly, and the inner cylinder 2 can be precisely adjusted by rotating the lead screw.

[0030] like Figure 2-3 As shown in this embodiment, the inner cylinder 2 is further fixedly connected to the sliding ring 3 or detachably connected. Specifically, the fixing method includes welding or integral injection molding, and the assembly can also be carried out by detachable methods such as snap-fit ​​connection, bolt connection or threaded connection. As an option, the fixed connection method ensures the structural strength and integrity, while the detachable connection facilitates the disassembly, cleaning, component replacement and adjustment of the device, which significantly enhances the applicability of the device.

[0031] like Figure 3-5As shown, in another embodiment, the inner cylinder 2 is provided with a lifting ring 26 at its top and its bottom edge overlaps the sliding ring 3, achieving a simple connection that can be separated at any time. The inner cylinder 2 is formed by a pair of identical half-cylinders 21 joined together. The upper parts of the two half-cylinders 21 are coaxially clamped together by a first limiting ring 22. The bottom of the half-cylinders 21 is fixedly provided with a semi-ring portion 231. The two semi-ring portions 231 are coaxially clamped together by a second limiting ring 24. The first limiting ring 22 and the second limiting ring 24 are preferably made of materials with a certain degree of elasticity, such as rubber or flexible plastic. In some other embodiments, the half-cylinders 2... The outer wall of the ring 231 is surrounded by a semi-thread 232. When the two semi-threads 232 are engaged, they form a complete external thread path. The inner wall of the second limiting ring 24 is provided with a fixed thread 241 that can engage with its thread. The threaded connection between the two can further enhance the overall structure. Based on the above configuration, when planting seedlings, it is only necessary to loosen and remove the second limiting ring 24 and the first limiting ring 22 to quickly release the constraint between the semi-cylinders 21 and achieve radial separation of the inner cylinder 2. This allows the seedlings, along with the complete root ball, to be placed into the planting hole without disturbance, greatly reducing the mechanical damage and stress response to the root system caused by the traditional seedling removal process.

[0032] like Figure 1-3 As shown, in another embodiment, the inner cylinder 2 has several longitudinally extending root guide grooves 25 uniformly arranged along the inner wall circumferentially. The cross-section of the root guide grooves 25 can be set to V-shape or U-shape, and the number can be flexibly set according to actual needs. The bottom of the inner cylinder 2 is provided with an arc-shaped guide surface 212. The arc-shaped guide surface 212 guides the new roots to naturally gather and grow towards the center along the arc surface, avoiding the roots from coiling along the traditional right-angle structure. The root guide grooves 25 extend smoothly along the inner wall to the bottom of the inner cylinder 2 and naturally connect with the arc-shaped guide surface 212 there. They further extend along the arc-shaped guide surface 212 to communicate with the root control hole 23, and finally converge together at the root control hole 23 in the center. Based on the above settings, through the root guide grooves 25 and the guiding effect on the new roots, the roots are effectively promoted to grow in an orderly manner along the preset direction, thereby avoiding coiling on the inner wall and bottom of the container. Finally, the roots are accurately guided to the area of ​​the root control hole 23 for air trimming, forming a dense and well-developed fibrous root cluster.

[0033] like Figure 1-3As shown, in another embodiment, a scale 14 is fixedly installed on the outer wall of the outer cylinder 1. The scale 14 has multiple scale lines along the axial direction, and a clear scale range is formed between adjacent scale lines. Each scale line corresponds to a specific overlapping area of ​​the inner ventilation hole 211 and the outer ventilation hole 11 when the bottom of the inner cylinder 2 is raised or lowered to that position. The scale is marked with corresponding identification marks according to the growth stage of the seedling. Specifically, the scale range from top to bottom can be marked with the budding stage, rooting stage, growth stage, etc. Based on the above settings, by adjusting the bottom edge of the inner cylinder 2 to be flush with the target scale line, the internal ventilation state of the device can be intuitively and accurately adjusted to the optimal level required for the current seedling growth cycle, thereby achieving standardized management without the need for experience judgment and significantly improving the accuracy and ease of operation of water and air environment control.

[0034] like Figure 1-3 As shown, in another embodiment, a plurality of support feet 15 are fixedly arranged around the bottom of the outer cylinder 1. The support feet 15 are L-shaped or inverted T-shaped and are fixedly connected to the bottom surface of the outer cylinder 1 in a circumferentially evenly distributed manner to form a stable support. A continuous ventilation groove 16 is naturally formed between adjacent support feet 15. Based on the above arrangement, the ventilation groove 16 keeps the air inside the inner cylinder 2 and the outside air unobstructed, ensuring the airflow exchange space required for root trimming at the bottom and effectively preventing the root control hole 23 from being blocked by the ground.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A citrus seedling raising device that facilitates water and air regulation, characterized in that: The outer cylinder (1) with an open top is provided. The bottom of the outer cylinder (1) is provided with a clearance hole (12). The outer cylinder (1) is provided with an external vent hole (11) on the side wall near the bottom. The inner cylinder (2) with an open top is slidably fitted inside the outer cylinder (1). The inner cylinder (2) slides up and down inside the outer cylinder (1) through a sliding component. The bottom of the inner cylinder (2) is provided with a root control hole (23). The side wall near the bottom of the inner cylinder (2) is provided with an internal vent hole (211). The internal vent hole (211) can slide to be offset from, partially overlap with or overlap with the external vent hole (11).

2. The citrus seedling raising device for easy water and air regulation as described in claim 1, characterized in that: The external vents (11) are arranged in a circumferential array around the outer cylinder (1).

3. The citrus seedling raising device for easy water and air regulation as described in claim 2, characterized in that: The internal ventilation holes (211) are arranged in a circumferential array around the inner cylinder (2).

4. The citrus seedling raising device for easy water and air regulation as described in claim 1, characterized in that: The sliding assembly includes a sliding ring (3), with an external thread (31) surrounding the outside of the sliding ring (3), and an internal thread (13) that can engage with the external thread (31) surrounding the inner edge of the top of the outer cylinder (1).

5. A citrus seedling raising device for easy water and air regulation as described in claim 4, characterized in that: The inner cylinder (2) is fixedly connected to or detachably connected to the sliding ring (3).

6. The citrus seedling raising device for easy water and air regulation as described in claim 4, characterized in that: The inner cylinder (2) overlaps the sliding ring (3). The inner cylinder (2) includes a pair of identical half cylinders (21). The upper parts of the two half cylinders (21) are coaxially sleeved and fixed by the first limiting ring (22). The bottom of the half cylinder (21) is fixedly provided with a half ring (231). The two half rings (231) are coaxially sleeved and fixed by the second limiting ring (24).

7. The citrus seedling raising device for easy water and air regulation as described in claim 1, characterized in that: The inner cylinder (2) has several root guide grooves (25) arranged longitudinally along the inner wall.

8. A citrus seedling raising device for easy water and air regulation as described in claim 7, characterized in that: The bottom of the inner cylinder (2) is provided with an arc-shaped guide surface (212), and the root guide groove (25) extends along the arc-shaped guide surface (212) to communicate with the root control hole (23).

9. A citrus seedling raising device for easy water and air regulation as described in claim 1, characterized in that: The outer wall of the outer cylinder (1) is fixedly equipped with a scale (14).

10. A citrus seedling raising device for easy water and air regulation as described in claim 1, characterized in that: The bottom of the outer cylinder (1) is fixedly provided with several support feet (15), and ventilation grooves (16) are left between the support feet (15).

Images