Maize seed germination period drought tolerance identification test device

Abstract

The invention discloses a corn seed germination period drought tolerance identification test device which comprises a shell, a culture tank is arranged in the shell, the bottom end of the culture tank is communicated with a drainage pipe, the culture tank is used for containing planting soil, and a humidity sensor is arranged in the culture tank; a first sleeve is arranged above the culture groove, the first sleeve is installed on the inner wall of the shell, the first sleeve and the culture groove are in butt joint to form a culture cavity, a planting barrel is arranged on the inner side of the first sleeve, the outer diameter of the planting barrel is smaller than the inner diameter of the first sleeve, and the top of the planting barrel is in sliding fit with the bottom of the first sleeve; a plurality of seed containing units are arranged at the bottom end of the planting barrel and extend into soil in the culture tank; a humidity adjusting mechanism for adjusting the humidity of soil in the culture tank is arranged in the shell. According to the device, the humidity of soil in the culture tank can be adjusted, so that different drought degrees can be simulated, and the device has high similarity with the environment during field production, so that the accuracy of an identification result can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of corn drought resistance identification, in particular to a corn seed drought resistance identification test device during the germination period. Background Art

[0002] Drought is one of the main factors restricting agricultural and social development. Corn is one of the main food and feed crops. Drought can reduce corn yield by 20%-30%, and in severe cases, it can reach more than 50%. When corn encounters drought during the seedling stage, problems such as reduced germination ability and reduced seedling survival rate will occur, which will seriously affect the number of seedlings in the field, thus leading to reduced production. Breeding drought-resistant corn varieties and improving the drought resistance of corn varieties is an effective way to solve the problem of reduced corn production, and it is also an important measure to ensure stable or increased corn production.

[0003] Drought stress during the germination period will result in stunted seedling growth, weak bud vigor, less rooting and short roots, weak seedlings, and low survival rate, which will seriously affect the growth and development of grains and the final yield. Screening for drought-tolerant traits and evaluating drought tolerance are the key to selecting drought-tolerant resources and breeding drought-tolerant varieties.

[0004] However, the existing test device cannot adjust the degree of drought, conduct variable research on it, and cannot truly simulate field production. The accuracy and reproducibility of the identification results are extremely poor, which is far from the actual field conditions. Therefore, it is urgent to provide a corn seed germination period drought tolerance identification test device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a corn seed germination period drought tolerance identification test device to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides a test device for identifying drought resistance of corn seeds during the germination period, comprising a shell, a culture trough is arranged inside the shell, the bottom end of the culture trough is connected to a drainage pipe, the culture trough is used to hold planting soil, and a humidity sensor is arranged inside the culture trough; a first sleeve is arranged above the culture trough, the first sleeve is installed on the inner wall of the shell, the first sleeve is connected to the culture trough to form a culture cavity, a planting barrel is arranged on the inner side of the first sleeve, the outer diameter of the planting barrel is smaller than the inner diameter of the first sleeve, and the top of the planting barrel is slidably matched with the bottom of the first sleeve; a plurality of seed holding units are arranged at the bottom end of the planting barrel, and the seed holding units extend into the soil in the culture trough; a humidity regulating mechanism for adjusting the humidity of the soil in the culture trough is arranged inside the shell.

[0007] Preferably, the shell includes a first shell, a second shell and a third shell which are arranged in sequence from bottom to top, the culture trough and the humidity adjustment mechanism are both installed in the first shell, the first sleeve is fixedly connected to the second shell, and a ventilation hole is opened on the top of the third shell.

[0008] Preferably, an annular baffle is fixedly connected to the top of the planting barrel, and the planting barrel is slidably matched with the top of the first sleeve through the annular baffle.

[0009] Preferably, the seed holding unit includes a plurality of second sleeves fixedly connected to the bottom end of the planting barrel, the second sleeves are connected to the planting barrel, the bottom end of the second sleeves is a sealed end, and a vertical long hole is opened on the side wall of the second sleeves.

[0010] Preferably, a cover plate is detachably mounted on the top end of the annular baffle, a vent hole is provided on the cover plate, and a handle is fixedly connected to the cover plate.

[0011] Preferably, a support frame is fixedly connected to the inner wall of the first shell, and the culture tank is installed on the support frame.

[0012] Preferably, a mounting hole is provided in the middle of the support frame, the mounting hole is a polygonal structure, and the drainage pipe at the bottom end of the culture tank is adapted to the mounting hole.

[0013] Preferably, the humidity regulating mechanism includes a heater and a sprinkler, the heater is fixedly mounted on the inner wall of the first shell, an annular groove is provided on the inner wall of the first shell, a slider is slidably connected in the annular groove, the sprinkler is mounted on the top of the slider, and is used to spray water into the culture tank.

[0014] Preferably, an annular mounting groove is provided at the top of the first shell and the top of the second shell, and an annular mounting block is provided at the bottom of the second shell and the bottom of the third shell, and the annular mounting block is adapted to the annular mounting groove.

[0015] Preferably, the top of the first shell is a transparent structure.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects:

[0017] The corn seed germination period drought resistance identification test device provided by the present invention adjusts the humidity of the soil in the culture tank by means of a humidity adjustment mechanism inside a shell. When the humidity of the soil in the culture tank meets the target requirement, the first sleeve is installed above the culture tank, and the planting barrel is installed on the first sleeve at the same time. The arrangement of the first sleeve and the planting barrel allows the culture tank to form a relatively closed space, thereby maintaining the relative stability of the humidity of the soil in the culture tank. In this way, the stability of the environmental parameters of the seeds during the germination process can be maintained. By controlling the humidity parameters of the soil in the culture tank, the seed germination period drought resistance identification test can be carried out.

[0018] The present invention can adjust the humidity of the soil in the culture tank, so as to simulate different drought degrees, and has a high degree of similarity with the environment during field production, thus helping to improve the accuracy of the identification result. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the test device for identifying drought resistance of corn seeds during germination period of the present invention;

[0021] Figure 2 This is a state diagram of the soil humidity in the culture tank of the present invention when being adjusted;

[0022] In the figure: 1. culture tank; 2. drainage pipe; 3. first sleeve; 4. planting barrel; 5. first shell; 6. second shell; 7. third shell; 8. vent; 9. annular baffle; 10. second sleeve; 11. cover plate; 12. handle; 13. support frame; 14. heater; 15. sprinkler; 16. annular slide; 17. slider; 18. annular mounting block. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] like Figure 1 to Figure 2As shown, the present invention provides a test device for identifying drought resistance of corn seeds during the germination period, comprising a shell, a culture tank 1 is arranged inside the shell, the bottom end of the culture tank 1 is connected with a drainage pipe 2, the culture tank 1 is used to hold soil for planting, and a humidity sensor is arranged inside the culture tank 1; a first sleeve 3 is arranged above the culture tank 1, the first sleeve 3 is installed on the inner wall of the shell, the first sleeve 3 is connected with the culture tank 1 to form a culture cavity, a planting barrel 4 is arranged on the inner side of the first sleeve 3, the outer diameter of the planting barrel 4 is smaller than the inner diameter of the first sleeve 3, and the top of the planting barrel 4 is slidably matched with the bottom of the first sleeve 3; a plurality of seed holding units are arranged at the bottom end of the planting barrel 4, and the seed holding units extend into the soil in the culture tank 1; a humidity regulating mechanism for regulating the humidity of the soil in the culture tank 1 is arranged inside the shell.

[0025] When the present invention is in use, the humidity of the soil in the culture tank 1 is first adjusted by the humidity adjustment mechanism inside the shell. When the humidity of the soil in the culture tank 1 meets the target requirements, the first sleeve 3 is installed above the culture tank 1, and the planting barrel 4 is installed on the first sleeve 3. By utilizing the arrangement of the first sleeve 3 and the planting barrel 4, the culture tank 1 forms a relatively closed space, so that the humidity of the soil in the culture tank 1 can be kept relatively stable. In this way, the environmental parameters of the seeds during the germination process can be kept stable. By controlling the humidity parameters of the soil in the culture tank 1, a drought resistance identification test during the seed germination period can be carried out.

[0026] The present invention can adjust the humidity of the soil in the culture tank 1, so as to simulate different degrees of drought, which is highly similar to the environment during field production, thereby helping to improve the accuracy of the identification results.

[0027] A further optimized solution is provided to facilitate the use of the device, wherein the shell includes a first shell 5, a second shell 6 and a third shell 7 which are arranged in sequence from bottom to top, the culture tank 1 and the humidity adjustment mechanism are both installed in the first shell 5, the first sleeve 3 is fixedly connected to the second shell 6, and a ventilation hole 8 is provided on the top of the third shell 7.

[0028] To further optimize the solution, in order to ensure that the planting barrel 4 can move in the culture tank 1, an annular baffle 9 is fixedly connected to the top of the planting barrel 4, and the planting barrel 4 is slidably matched with the top of the first sleeve 3 through the annular baffle 9.

[0029] A further optimized solution is to ensure that the seeds can be covered with the soil in the culture trough 1 after being placed in the culture trough 1. The seed holding unit includes a plurality of second sleeves 10 fixedly connected to the bottom end of the planting barrel 4. The second sleeves 10 are connected to the planting barrel 4. The bottom end of the second sleeve 10 is a sealed end. A vertical long hole is opened on the side wall of the second sleeve 10.

[0030] According to a further optimized solution, in order to facilitate the movement of the planting barrel 4, a cover plate 11 is detachably mounted on the top of the annular baffle 9, a ventilation hole is opened on the cover plate 11, and a handle 12 is fixedly connected to the cover plate 11.

[0031] To further optimize the solution, in order to facilitate the installation of the culture tank 1 , a support frame 13 is fixedly connected to the inner wall of the first shell 5 , and the culture tank 1 is installed on the support frame 13 .

[0032] To further optimize the solution, in order to prevent the culture tank 1 from moving when the planting barrel 4 is moved, a mounting hole is opened in the middle of the support frame 13. The mounting hole is a polygonal structure, and the drainage pipe 2 at the bottom of the culture tank 1 is compatible with the mounting hole.

[0033] A further optimized solution is to facilitate the adjustment of the humidity of the soil in the culture tank 1, and the humidity adjustment mechanism includes a heater 14 and a sprinkler 15. The heater 14 is fixedly mounted on the inner wall of the first shell 5. An annular slide groove 16 is provided on the inner wall of the first shell 5. A slider 17 is slidably connected in the annular slide groove 16. The sprinkler 15 is mounted on the top of the slider 17. The sprinkler 15 is used to spray water into the culture tank 1.

[0034] To further optimize the solution, in order to ensure the sealing of the shell, annular mounting grooves are provided at the top of the first shell 5 and the top of the second shell 6, and annular mounting blocks 18 are provided at the bottom of the second shell 6 and the bottom of the third shell 7, and the annular mounting blocks 18 are adapted to the annular mounting grooves.

[0035] According to a further optimization scheme, in order to facilitate observation of seed germination, the top of the first shell 5 is a transparent structure.

[0036] The corn seed germination period drought tolerance identification test device provided by the present invention has the following working principles:

[0037] After placing the culture tank 1 on the support frame 13, add a proper amount of soil to the culture tank 1, then move the position of the sprinkler 15 through the slider 17, use the sprinkler 15 to inject a proper amount of water into the culture tank 1, and then monitor the humidity of the soil through the reading of the display connected to the humidity sensor. When the humidity of the soil is higher than the target humidity, stop adding water, and then start the heater 14. Use the heater 14 to control the temperature in the shell to remain stable. At the same time, make the water in the soil in the culture tank 1 evaporate and control the humidity of the soil to drop to the target value. When the humidity of the soil meets the requirements, install the second shell 6 on the first shell 5, put seeds into the second sleeve 10 on the planting barrel 4, and then put the planting barrel 4 Place it in the first sleeve 3, and then the second sleeve 10 at the bottom of the planting barrel 4 is inserted into the soil of the culture tank 1, and then the cover 11 is covered, and the position of the planting barrel 4 is changed by the handle 12. During the movement of the planting barrel 4, the second sleeve 10 can be used to stir the soil in the culture tank 1 to reduce the occurrence of local over-humidification. At the same time, the soil in the culture tank 1 will also enter the second sleeve 10 through the vertical long hole to cover the seeds. At this time, the first sleeve 3 and the planting barrel 4 are used to form a relatively closed space in the culture tank 1, so that the humidity of the soil in the culture tank 1 can be kept relatively stable, so that the environmental parameters of the seeds during the germination process can be kept stable. When conducting drought resistance identification tests with different humidity levels, it is only necessary to control the humidity parameters of the soil in the culture tank 1.

[0038] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A test device for identifying drought tolerance during the germination period of corn seeds, characterized in that: The invention comprises a shell, wherein a culture tank (1) is arranged inside the shell, the bottom end of the culture tank (1) is connected to a drainage pipe (2), the culture tank (1) is used to hold soil for planting, and a humidity sensor is arranged inside the culture tank (1); a first sleeve (3) is arranged above the culture tank (1), the first sleeve (3) is installed on the inner wall of the shell, the first sleeve (3) is connected to the culture tank (1) to form a culture cavity, a planting barrel (4) is arranged on the inner side of the first sleeve (3), the outer diameter of the planting barrel (4) is smaller than the inner diameter of the first sleeve (3), and the top of the planting barrel (4) is slidably matched with the bottom of the first sleeve (3); a plurality of seed holding units are arranged at the bottom end of the planting barrel (4), and the seed holding units extend into the soil in the culture tank (1); a humidity regulating mechanism for regulating the humidity of the soil in the culture tank (1) is arranged inside the shell.

2. The corn seed germination period drought tolerance identification test device according to claim 1, characterized in that: The shell comprises a first shell (5), a second shell (6) and a third shell (7) which are arranged in sequence from bottom to top; the culture tank (1) and the humidity regulating mechanism are both installed in the first shell (5); the first sleeve (3) is fixedly connected to the second shell (6); and a ventilation hole (8) is provided on the top of the third shell (7).

3. The corn seed germination period drought tolerance identification test device according to claim 1, characterized in that: The top end of the planting barrel (4) is fixedly connected with an annular baffle (9), and the planting barrel (4) is slidably matched with the top end of the first sleeve (3) via the annular baffle (9).

4. The corn seed germination period drought tolerance identification test device according to claim 1, characterized in that: The seed holding unit comprises a plurality of second sleeves (10) fixedly connected to the bottom end of the planting barrel (4); the second sleeves (10) are connected to the planting barrel (4); the bottom end of the second sleeves (10) is a sealed end; and a vertical long hole is provided on the side wall of the second sleeves (10).

5. The corn seed germination period drought tolerance identification test device according to claim 3, characterized in that: A cover plate (11) is detachably mounted on the top end of the annular baffle (9), a vent hole is provided on the cover plate (11), and a handle (12) is fixedly connected to the cover plate (11).

6. The corn seed germination period drought tolerance identification test device according to claim 2, characterized in that: A support frame (13) is fixedly connected to the inner wall of the first shell (5), and the culture tank (1) is installed on the support frame (13).

7. The corn seed germination period drought tolerance identification test device according to claim 6, characterized in that: A mounting hole is provided in the middle of the support frame (13), and the mounting hole is a polygonal structure. The drainage pipe (2) at the bottom end of the culture tank (1) is adapted to the mounting hole.

8. The corn seed germination period drought tolerance identification test device according to claim 2, characterized in that: The humidity regulating mechanism comprises a heater (14) and a sprinkler (15), wherein the heater (14) is fixedly mounted on the inner wall of the first shell (5), an annular groove (16) is provided on the inner wall of the first shell (5), a slider (17) is slidably connected in the annular groove (16), and the sprinkler (15) is mounted on the top of the slider (17), and is used to spray water into the culture tank (1).

9. The corn seed germination period drought tolerance identification test device according to claim 2, characterized in that: The top ends of the first shell (5) and the second shell (6) are both provided with an annular mounting groove, and the bottom ends of the second shell (6) and the third shell (7) are both provided with an annular mounting block (18), and the annular mounting block (18) is adapted to the annular mounting groove.

10. The corn seed germination period drought tolerance identification test device according to claim 2, characterized in that: The top end of the first shell (5) is a transparent structure.

Images