A rice seedling stage salinity gradient culture test seedling box

Abstract

The utility model belongs to the technical field of seedling test equipment, provide a kind of rice seedling stage salinity gradient culture test is used to raise seedling box, comprising: box body subassembly is used to place rice seedling through box body, carries out seedling culture test;Box cover subassembly is used to control and adjust the temperature and humidity culture environment of rice seedling;Shunt component is used to shunt input and have the culture liquid of salinity;Liquid outlet component includes liquid outlet piece and control piece, through cavity pipe intercommunication box body subassembly inner chamber, cavity pipe lower part is also provided with liquid outlet hole, liquid outlet piece is set in cavity pipe, by the rotation of control piece adjustment, by liquid outlet piece to the inner chamber of box body subassembly carries out plugging and liquid outlet operation;The utility model is through the cooperation of liquid outlet piece and control piece on liquid outlet component, control the liquid level in separate chamber, avoid root system hypoxia or water shortage, meet the demand of different growth stages of rice seedling stage, reduce seedling mortality.

Description

Technical Field

[0001] This utility model belongs to the technical field of seedling experimental equipment, specifically a seedling box for rice seedling salinity gradient culture experiment. Background Technology

[0002] To support agricultural research on genetic improvement of rice salt tolerance and optimization of cultivation techniques, the rice seedling salinity gradient culture experiment is one of the core components. This experiment requires setting up multiple groups of culture solutions with different salinity gradients in a controlled environment to observe seedling growth indicators, clarify the tolerance threshold and response mechanism of rice seedlings to salt stress, and thus provide data support for the screening of salt-tolerant rice varieties and the development of planting technology in saline-alkali land.

[0003] However, during the rice seedling stage, temperature and humidity are key environmental factors affecting the basic growth of seedlings. Excessive fluctuations in temperature and humidity can easily lead to an imbalance in seedling growth, thus interfering with the accurate assessment of the impact of salinity stress on seedlings. Therefore, it is necessary to ensure precise control and stability of temperature and humidity in the experimental environment. However, most existing simple seedling raising devices lack dedicated temperature and humidity control structures: some devices achieve temperature and humidity control by punching holes in the lid or covering with plastic film. Punching holes only provides a fixed amount of ventilation and cannot be flexibly adjusted according to the seedling growth stage, easily leading to excessive seedling growth and disease due to high temperature and humidity, or low temperature and drought due to excessive ventilation; while covering with plastic film can provide short-term heat and moisture retention, it requires frequent opening and closing of the film for ventilation, which is cumbersome and prone to sudden changes in temperature and humidity, making it difficult to maintain a stable cultivation environment; even those few devices equipped with temperature and humidity control functions mostly rely on complex electronic temperature control systems, which are not only costly and bulky but also have strict power supply requirements, making them unsuitable for small and medium-sized laboratories or temporary field experiments, resulting in poor universality.

[0004] Meanwhile, rice seedlings have fragile root systems that are extremely sensitive to the level of the culture solution: excessively high levels can lead to prolonged root immersion and oxygen deficiency, causing root rot; excessively low levels can cause root dehydration, affecting nutrient absorption. Both of these factors can increase seedling mortality and compromise the integrity of the experimental samples. However, existing seedling raising devices have significant shortcomings in terms of liquid level control: traditional seedling trays are mostly designed as a single chamber, lacking an independent liquid level adjustment structure. They can only roughly control the total liquid volume by tilting or siphoning, and cannot achieve precise liquid level control for different salinity gradient zones. This can easily result in some zones having excessively high liquid levels and others having excessively low liquid levels. Some seedling raising devices with zoned functions, although separated into multiple chambers by partitions, are not equipped with dedicated liquid discharge control components. When draining the liquid, the device must be disassembled or an external pipette must be used, which is inconvenient and can easily lead to residual culture solution in the chambers. This not only makes it impossible to flexibly adjust the liquid level to meet the needs of different seedling growth stages, but may also cause residual liquid to mix with newly injected culture solutions of different salinities, compromising the accuracy of the salinity gradient and increasing the error in experimental data. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a seedling tray for rice seedling salinity gradient culture experiments, thereby solving the problems of uncontrollable temperature and humidity in the cultivation environment and the inability to flexibly control the liquid level mentioned in the background art.

[0006] A seedling tray for a rice seedling salinity gradient culture experiment includes:

[0007] The box assembly is used to hold rice seedlings for seedling cultivation experiments;

[0008] A lid assembly, located at the upper end of the box body assembly, is used to control and regulate the temperature and humidity cultivation environment of rice seedlings.

[0009] A diversion component is installed on one side of the housing assembly and connects to the inner cavity of the housing assembly for diverting the input of culture liquid containing salt.

[0010] The liquid dispensing assembly is installed on the other side of the box assembly and has multiple sets, including a liquid dispensing component and a control component. It is connected to the inner cavity of the box assembly through a cavity tube. The lower outer surface of the cavity tube is also provided with a liquid dispensing hole. The liquid dispensing component is slidably disposed in the cavity tube and is adjusted by rotating the control component. The liquid dispensing component can block and dispense liquid from the inner cavity of the box assembly.

[0011] Preferably, the box assembly includes partitions evenly spaced within the inner cavity of the box, the partitions dividing the inner cavity of the box into multiple sets of partitioned cavities, each partitioned cavity having connecting holes at both ends, and the inner cavity of the box also containing a cavity box, the partitions and partitioned cavities dividing the cavity box into multiple sets, and each cavity box having a hole at its bottom.

[0012] Preferably, the lid assembly further includes a cover body installed on the upper end of the box body assembly. An adjustment slot is provided in the middle of the upper end of the cover body. The adjustment slots are equidistantly spaced around the center point. An adjustment disc is rotatably connected to the center point of the upper end of the cover body via a rotating shaft. The adjustment disc has slots corresponding to the adjustment slots. A first knob is installed on the rotating shaft extending from the middle of the adjustment disc, which is used to open and close the adjustment slots by rotating to adjust the temperature and humidity environment inside the box.

[0013] Preferably, the diversion assembly includes an infusion tube for connecting to an external pipeline, the other end of the infusion tube is connected to a receiving cavity, the receiving cavity is connected to an inlet tube, multiple sets of inlet tubes are provided, each inlet tube is provided with a regulating valve, and the output end of each inlet tube is connected to a corresponding partition cavity through a connecting hole.

[0014] Preferably, the cavity tube is open at both ends and has multiple sets of corresponding connecting holes. The liquid outlet on the lower outer side of the cavity tube is matched with the liquid outlet component. The liquid outlet component is a hollow cylindrical tube with liquid contact holes through the upper two sides and a liquid discharge hole on the lower outer side. Both ends of the tube are closed. The liquid discharge hole is matched with the liquid outlet hole. An extension rod is fixedly connected to the lower end of the tube of the liquid outlet component. The extension rod is movably connected to the control component.

[0015] Preferably, the control component further includes a housing, the outer side of which has an opening for movement, and two sets of limit posts are fixedly installed at the bottom of the inner cavity of the housing, located on both sides of the opening for movement at a 90-degree angle; a rotating shaft is movably installed in the middle of the bottom surface of the inner cavity of the housing, and a connecting rod is fixedly installed in the middle of the rotating shaft, the outer end of the connecting rod is movably connected to the extension rod, and a second knob is fixedly installed on the upper end of the rotating shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model adjusts the temperature and humidity of the seedling environment by aligning / misaligning the adjustment plate and adjustment slot on the lid assembly, achieving precise control of ventilation. It has a simple structure and good sealing performance, which can both keep warm and moist and respond quickly to changes in temperature and humidity, making it suitable for laboratory environments in different regions.

[0018] 2. This utility model controls the liquid level in the partition chamber by cooperating with the liquid outlet component and the control component on the liquid outlet assembly, so as to avoid root hypoxia or water shortage, meet the needs of different growth stages of rice seedlings, and reduce seedling mortality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the box assembly structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the box cover assembly structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the current splitter component structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the liquid outlet component structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the liquid outlet and control components of this utility model.

[0025] In the picture:

[0026] 100. Box body assembly; 101. Partition plate; 102. Separating cavity; 103. Connecting hole; 104. Hole box; 105. Hole opening; 200. Box cover assembly; 201. Cover body; 202. Adjustment slot hole; 203. Adjustment disc; 204. First knob; 300. Diverting assembly; 301. Infusion tube; 302. Receiving cavity; 303. Inlet tube; 304. Adjusting valve; 400. Discharge assembly; 401. Cavity tube; 402. Discharge hole; 403. Discharge component; 403a. Contact hole; 403b. Discharge hole; 403c. Extension rod; 404. Control component; 404a. Housing; 404b. Limiting post; 404c. Rotating shaft; 404d. Connecting rod; 404e. Second knob. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0028] Example 1: This utility model provides a seedling tray for a rice seedling salinity gradient culture experiment, as shown in the attached diagram. Figure 1 As shown, it includes: a box assembly 100 for placing rice seedlings through the box for seedling cultivation experiments; a box cover assembly 200, located on the upper end of the box assembly 100, for controlling and regulating the temperature and humidity cultivation environment of the rice seedlings; and a diversion assembly 300, installed on one side of the box assembly 100 and connected to the inner cavity of the box assembly 100, for diverting the input of a culture liquid containing salt.

[0029] As attached Figure 2 and attached Figure 4 As shown, the box assembly 100 includes partitions 101 that are equidistantly spaced in the inner cavity of the box. The partitions 101 divide the inner cavity of the box into multiple sets of partition cavities 102. The partition cavities 102 have connection holes 103 at both ends. The inner cavity of the box also contains a cavity box 104. The partitions 101 and partition cavities 102 divide the cavity box 104 into multiple sets. Each cavity box 104 has a cavity hole 105 at its bottom. The inner cavity of the box is divided into multiple partitioned chambers 102 by the partition 101, achieving zoning. Rice seedlings are fixed by the seedling boxes 104 to ensure stable seedling position. At the same time, the holes 105 at the bottom of the seedling boxes 104 are connected to the partitioned chambers 102, allowing the culture medium to contact the seedling roots and achieve liquid circulation. The multiple partitioned chambers 102 can simultaneously hold culture mediums of different salinities, avoiding mixing of liquids with different salinities. By fixing the seedlings with the seedling boxes 104 and supplying liquid through the holes 105, the growth environment of each seedling can be ensured to be consistent, such as the area of ​​root contact with liquid, thereby reducing experimental errors. Its zoning structure ensures that if a problem occurs in one group of gradients, it will not affect other groups, improving the experimental error tolerance.

[0030] As attached Figure 3As shown, the lid assembly 200 also includes a lid 201 installed on the upper end of the box body assembly 100. An adjustment slot 202 is provided in the middle of the upper end of the lid 201. The adjustment slots 202 are equidistantly spaced around the center point. An adjustment disc 203 is rotatably connected to the center point of the upper end of the lid 201 via a rotating shaft. The adjustment disc 203 has slots corresponding to the adjustment slots 202. A first knob 204 is installed on the rotating shaft extending from the middle of the adjustment disc 203, used to adjust the temperature and humidity environment inside the box by rotating and closing the adjustment slots 202. The lid 201 completely covers the box, forming a relatively sealed seedling space. Rotating the first knob 204 rotates the adjustment disc 203. The ventilation volume is controlled by aligning / misaligning the slots of the adjustment disc 203 with the adjustment slots 202 of the lid 201. Changes in ventilation directly regulate the temperature and humidity inside the box; when aligned, ventilation is good, resulting in cooling and dehumidification; when misaligned, airtightness is good, resulting in heat preservation and moisture retention. This avoids the impact of external temperature and humidity fluctuations on seedling cultivation, ensuring that all salinity gradient groups are in the same temperature and humidity environment, retaining only salinity as a variable, which conforms to the single variable principle of experimental design. The manual adjustment of the first knob 204 is simple to operate and can be flexibly adjusted according to the needs of rice seedlings and the temperature and humidity preferences of different growth stages, making it highly adaptable.

[0031] As attached Figure 4 As shown, the diversion assembly 300 includes an infusion tube 301 for connecting to an external pipeline. The other end of the infusion tube 301 is connected to a receiving cavity 302, which is connected to an inlet tube 303. Multiple inlet tubes 303 are provided, each equipped with a regulating valve 304. The output end of each inlet tube 303 is connected to a corresponding partition cavity 102 via a connection hole 103. The infusion tube 301 connects to an external culture medium source, while the receiving cavity 302 temporarily stores the liquid, acting as a buffer and pressure stabilizer. The buffering effect of the receiving cavity 302 prevents uneven flow caused by fluctuations in external supply pressure, ensuring a stable input volume of culture medium for each group and further reducing errors. Multiple sets of inlet pipes 303 are connected to the partition chambers 102. Each set of inlet pipes 303 has a regulating valve 304 that independently controls the liquid flow rate. By adjusting the opening / closing of the regulating valve 304, culture media with different salinity concentrations can be introduced into different partition chambers 102. The independent regulating valve 304 enables one-chamber-one-control, allowing precise setting of the salinity for each partition chamber 102. Different partition chambers can also be set within the receiving chamber 302 via partitions, each corresponding to a different inlet pipe 303, allowing the culture media to be introduced into the corresponding partition chamber 102.

[0032] Example 2: This example is basically the same as the previous example, except that:

[0033] As attached Figure 5 To be continued Figure 6As shown, the liquid dispensing assembly 400 is installed on the other side of the box assembly 100 and has multiple sets, including a liquid dispensing component 403 and a control component 404. It is connected to the inner cavity of the box assembly 100 through a cavity tube 401. A liquid dispensing hole 402 is also provided on the lower outer surface of the cavity tube 401. The liquid dispensing component 403 is slidably disposed in the cavity tube 401, and the inner cavity of the box assembly 100 is sealed and liquid is dispensed by the rotation adjustment of the control component 404.

[0034] The cavity tube 401 is open at both ends and has multiple sets of corresponding connecting holes 103. The liquid outlet hole 402 on the lower outer side of the cavity tube 401 mates with the liquid outlet component 403. The liquid outlet component 403 is a hollow cylindrical tube with liquid contact holes 403a extending through both sides of the upper part of the tube and a liquid discharge hole 403b on the lower outer side. Both ends of the tube are closed, and the liquid discharge hole 403b mates with the liquid outlet hole 402. An extension rod 403c is fixedly connected to the lower end of the tube of the liquid outlet component 403, and the extension rod 403c is movably connected to the control component 404. The cavity tube 401 is connected to the partition cavity 102 through the connecting hole 103, and the hollow cylindrical tube of the liquid outlet component 403 slides inside the cavity tube 401.

[0035] The control component 404 also includes a housing 404a, which has an opening on its outer side. A limit post 404b is fixedly installed at the bottom of the inner cavity of the housing 404a. Two sets of limit posts 404b are provided, located on both sides of the opening and set at 90 degrees. A rotating shaft 404c is movably installed in the middle of the bottom surface of the inner cavity of the housing 404a. A connecting rod 404d is fixedly installed in the middle of the rotating shaft 404c. The outer end of the connecting rod 404d is movably connected to the extension rod 403c. A second knob 404e is fixedly installed on the upper end of the rotating shaft 404c.

[0036] By rotating the second knob 404e, the rotating shaft 404c and connecting rod 404d are driven, which in turn pulls the extension rod 403c, causing the liquid outlet 403 to slide inside the cavity tube 401:

[0037] When the liquid outlet 403 slides upward in the cavity tube 401 and is limited by the limiting post 404b, so that the liquid discharge hole 403b of the liquid outlet 403 is aligned with the liquid outlet hole 402 of the cavity tube 401, the top of the tube body of the liquid outlet 403 extends out of the connecting hole 103. At this time, the liquid contact hole 403a contacts the liquid in the partition cavity 102, so that the liquid flows through the liquid contact hole 403a in the inner cavity of the tube body and is discharged through the aligned liquid discharge hole 403b and liquid outlet hole 402.

[0038] When the liquid outlet 403 slides downward within the cavity tube 401, it is stopped by the limiting post 404b, causing the discharge hole 403b of the liquid outlet 403 to be misaligned with the discharge hole 402 of the cavity tube 401. At this point, the top of the liquid outlet 403 seals the connecting hole 103, preventing liquid from flowing out of the partition cavity 102. The limiting post 404b limits the rotation angle of the rotating shaft 404c, preventing excessive sliding of the liquid outlet 403 and ensuring precise operation.

[0039] This allows for manual control of the timing of liquid discharge from each partition chamber 102, such as periodically changing the culture medium or adjusting the liquid level in the chamber to meet the liquid depth requirements of rice seedlings. Waste liquid can be discharged centrally through the discharge device 403 for convenient collection and treatment, avoiding pollution of the experimental environment. The combination of the limiting column 404b and the second knob 404e ensures stable operation, preventing leakage or failure to seal, and ensuring controllable experimental process.

[0040] As shown above, the lid assembly 200 stably controls the temperature and humidity environment, while the diversion assembly 300 and the liquid outlet assembly 400 precisely regulate salinity and liquid level. Ultimately, only salinity remains as the experimental variable, avoiding interference from factors such as temperature and humidity fluctuations and liquid mixing, ensuring that the data can be used for scientific analysis. The multiple partitioned chambers 102 of the box assembly 100, combined with the independent liquid inlet pipe 303 of the diversion assembly 300, allow for the simultaneous conduct of multiple salinity gradient experiments, eliminating the need for repeated experiments and significantly shortening the experimental cycle. Furthermore, the lid regulates temperature and humidity, while the liquid outlet assembly 400 controls the liquid level, preventing root hypoxia or water shortage and meeting the needs of rice seedlings at different growth stages, thus reducing seedling mortality.

[0041] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of this invention. Therefore, this invention is not limited to the particular embodiments but extends to various modifications that still fall within the scope of the appended claims.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution 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 solution of this utility model without departing from the spirit and scope of the technical solution 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 seedling tray for a rice seedling salinity gradient culture experiment, characterized in that, include: The box assembly (100) is used to place rice seedlings through the box for seedling cultivation experiments; A lid assembly (200) is disposed on the upper end of the body assembly (100) and is used to control and regulate the temperature and humidity cultivation environment of rice seedlings; A diversion assembly (300) is installed on one side of the housing assembly (100) and communicates with the inner cavity of the housing assembly (100) for diverting the input of culture liquid containing salt. The liquid dispensing assembly (400) is installed on the other side of the box assembly (100) and has multiple sets, including a liquid dispensing component (403) and a control component (404). It is connected to the inner cavity of the box assembly (100) through a cavity tube (401). The lower outer surface of the cavity tube (401) is also provided with a liquid dispensing hole (402). The liquid dispensing component (403) is slidably disposed in the cavity tube (401). By rotating and adjusting the control component (404), the liquid dispensing component (403) can block and dispense liquid from the inner cavity of the box assembly (100).

2. The seedling tray for rice seedling salinity gradient culture experiment as described in claim 1, characterized in that: The box assembly (100) includes partitions (101) evenly spaced in the inner cavity of the box, the partitions (101) dividing the inner cavity of the box into multiple sets of partition cavities (102), the partition cavities (102) having connection holes (103) at both ends, and the inner cavity of the box also contains a cavity box (104), the partitions (101) and partition cavities (102) dividing the cavity box (104) into multiple sets, and each cavity box (104) having a cavity hole (105) at its bottom.

3. The seedling tray for rice seedling salinity gradient culture experiment as described in claim 2, characterized in that: The lid assembly (200) also includes a cover (201) installed on the upper end of the box body assembly (100). An adjustment slot (202) is provided in the middle of the upper end of the cover (201). The adjustment slots (202) are equidistantly spaced around the center point. An adjustment disc (203) is rotatably connected to the center point of the upper end of the cover (201) via a rotating shaft. The adjustment disc (203) has a slot corresponding to the adjustment slot (202). A first knob (204) is installed on the rotating shaft extending from the middle of the adjustment disc (203) for adjusting the temperature and humidity environment inside the box by rotating to open and close the adjustment slot (202).

4. The seedling tray for rice seedling salinity gradient culture experiment as described in claim 2, characterized in that: The diversion assembly (300) includes an infusion tube (301) for connecting to an external pipeline. The other end of the infusion tube (301) is connected to a receiving cavity (302). The receiving cavity (302) is connected to an inlet tube (303). Multiple sets of inlet tubes (303) are provided. Each inlet tube (303) is equipped with a regulating valve (304). The output end of each inlet tube (303) is connected to a corresponding partition cavity (102) through a connecting hole (103).

5. The seedling tray for rice seedling salinity gradient culture experiment as described in claim 2, characterized in that: The cavity tube (401) is open at both ends and is provided with multiple sets of corresponding connecting holes (103). The liquid outlet hole (402) on the lower outer side of the cavity tube (401) is matched with the liquid outlet component (403). The liquid outlet component (403) is a hollow cylindrical tube with liquid contact holes (403a) through the upper two sides and liquid discharge holes (403b) on the lower outer side. The tube is closed at both ends. The liquid discharge hole (403b) is matched with the liquid outlet hole (402). An extension rod (403c) is fixedly connected to the lower end of the tube of the liquid outlet component (403). The extension rod (403c) is movably connected to the control component (404).

6. The seedling tray for rice seedling salinity gradient culture experiment as described in claim 5, characterized in that: The control component (404) further includes a housing (404a), which has an opening on its outer side. A limiting post (404b) is fixedly installed at the bottom of the inner cavity of the housing (404a). Two sets of limiting posts (404b) are provided, located on both sides of the opening and set at 90 degrees. A rotating shaft (404c) is movably installed in the middle of the bottom surface of the inner cavity of the housing (404a). A connecting rod (404d) is fixedly installed in the middle of the rotating shaft (404c). The outer end of the connecting rod (404d) is movably connected to the extension rod (403c). A second knob (404e) is fixedly installed on the upper end of the rotating shaft (404c).

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