Seed counting or germination rate measuring device and use method thereof

Abstract

The invention discloses a seed counting or germination rate measuring device and a using method thereof.The seed counting or germination rate measuring device comprises a culture dish, a partition plate, a distance detecting plate, a data processor and a partition plate fixing ring, a plurality of seed fixing holes are formed in the partition plate, seeds to be germinated are vertically placed in the seed fixing holes, and the edge of the circular partition plate is fixed to the inner wall of the partition plate fixing ring; the partition plate fixing ring is detachably connected with the culture dish, a plurality of distance detectors are arranged on the distance detection plate, the distance detectors are just arranged right above the corresponding seed fixing holes during testing, and the data processor is connected with any distance detector. The distance detectors are used for measuring distances D1 and D2 between the upper parts of the seeds and the distance detection plate before and after seed germination and sending the distances and corresponding distance detector codes to the data processor, and the data processor counts the seeds on the partition plate and calculates the germination rate based on the distances D1 and D2. The partition plate and the distance detection plate are matched with each other, so that the germination rate is accurately measured.

Description

Technical field:

[0001] The present invention belongs to the technical field of seed breeding, and in particular relates to a device for accurately counting or determining germination rates of seeds and a method for using the device. Background technology:

[0002] Whether it is food crops such as wheat and rice, or cash crops, good seeds are the basis for the normal growth of crops. The seeds are small in size. In the traditional seed germination experiment, human beings use tweezers to place seeds or use manual counting in the germination rate calculation process. This method is suitable for the case where there are not many seeds. When batch testing is time-consuming and laborious and the accuracy is low, or a counting plate with a fixed structure is used, due to different seed particle sizes or the presence of incomplete seeds, two or more seeds are accommodated in one counting hole, affecting the accuracy of counting or germination rate. Therefore, researchers are committed to finding a fast seed counting and germination rate determination method. For example, the invention patent CN116420465A discloses a seed germination rate determination method, system and device based on machine vision, and proposes to segment a binary image through image processing for germination statistics, but the statistical process is relatively complicated and has high technical requirements; the invention patent CN115918321B discloses a large-scale seed cultivation and quality inspection device and method, and proposes the whole process of large-scale breeding, but only mentions seed image acquisition, and does not clearly propose a germination rate statistical method. Therefore, the existing counters or germination rate measuring devices have brought troubles to related scientific research. The present invention designs a device for accurate seed counting and germination rate measuring, which can save manpower and time costs while implementing seed germination experiments more economically and efficiently. Summary of the invention:

[0003] The purpose of the present invention is to seek to design a device for accurately counting seeds or determining germination rates and a method for using the device to solve the problem that the germination rate calculation in the traditional seed germination process is time-consuming and labor-intensive, while the currently used technology needs to be based on complex graphics processing algorithms.

[0004] In order to achieve the above-mentioned purpose, the seed counting or germination rate determination device of the present invention comprises a culture dish, a partition, a distance detection plate, a data processor and a partition fixing ring, a plurality of seed fixing holes are arranged on the partition, each seed fixing hole corresponds to a number, the diameter of the seed fixing hole is between the diameter of the tip of the seed to be germinated and the diameter of the swollen part, the seed to be germinated is vertically placed in the seed fixing hole, the edge of the circular partition is fixed on the inner wall of the partition fixing ring, the lower opening of the partition fixing ring is detachably connected to the upper opening of the culture dish, a plurality of distance detectors are arranged on the distance detection plate, and the inside of any distance detector A code is provided. During the test, the distance detection plate is placed directly above the partition. The seed fixing hole number corresponds one-to-one with the code of the distance detector and the distance detector is placed just above the corresponding seed fixing hole. The data processor is connected to any distance detector. The distance detector is used to measure the distance D1 between the upper part of the seed and the distance detection plate before the seed germinates, and the distance D2 between the upper part of the seed and the distance detection plate after the seed germinates, and sends the distance and the corresponding distance detector code to the data processor. The data processor counts the seeds on the partition and calculates the germination rate based on the distances D1 and D2.

[0005] The seed counting or germination rate determination device also includes a seed attractor, which includes an outer shell, a fan, a fan cover, a partition net and a handle. The front end of the barrel-shaped outer shell is open, and the rear end surface is provided with an air outlet. The fan is installed in the outer shell cavity and the air outlet at the rear end of the fan is close to the air outlet. The fan cover is arranged at the front end of the fan, and the outer wall of the air inlet of the fan is sealed and connected to the inner wall at the rear end of the fan cover. Ventilation holes are evenly distributed on the front end surface of the fan cover. A partition net is fixed between the front end of the fan cover and the outer shell opening. The lower opening of the partition fixing ring is detachably connected to the front end opening of the outer shell. The mesh of the partition net is smaller than the aperture of the seed fixing hole. The gap between the seed fixing holes of the partition is provided with small ventilation holes, and the diameter of the small holes is much smaller than the diameter of the seed fixing holes.

[0006] In order to remove the dried and damaged seeds from the seeds to be germinated, as an implementation method, a vibrator is installed on the annular outer wall of the partition fixing ring 10. In this implementation method, the method of using the seed counting or germination rate determination device is as follows:

[0007] (1) The seeds are laid flat in the container, and the baffle fixing ring is installed at the front opening of the shell. The baffle fixing ring is placed horizontally with the opening facing downward and aligned with the seeds. The fan is started to form a negative pressure in the fan cover, and the seeds enter the baffle fixing ring along with the air. Since the diameter of the seed fixing hole in the baffle is between the diameter of the seed tip and the diameter of the seed bulge, the seeds are vertically stuck in the seed fixing hole;

[0008] (2) The fan opening is facing upwards, the fan is turned off, and the vibrator is turned on. The seeds are arranged neatly on the partition through vibration, and smaller or broken seeds are dropped off;

[0009] (3) Repeat steps (1)-(2) until the seed fixing holes on the partition 2 are filled or nearly filled;

[0010] (4) Finally, when the seed attractor is placed horizontally with its open end facing upward, the baffle fixing ring is removed from the fan and transferred to the upper part of the culture dish, and the distance detector and the data processor are turned on. The distance detector measures the distance D1 between the upper part of the seed and the distance detection plate before the seed germinates, and the distance D2 between the upper part of the seed and the distance detection plate after the seed germinates, and sends the distance and the corresponding distance detector code to the data processor;

[0011] (5) The data processor calculates the distance difference d=D1-D2 twice of the distance detector with the same code in sequence. If the difference falls within the set range, it is determined that the seed has germinated. Otherwise, it is determined that the seed has not germinated, and then the seed germination rate is calculated. If the distance D1 falls within the set range, it is determined that the corresponding seed fixing hole is fixed with seeds. Otherwise, the corresponding seed fixing hole is not filled with seeds, and then the number of seeds arranged on the partition 2 is counted.

[0012] As another implementation, the seed attractor further includes a screen and a screen fixing ring, the lower opening of the screen fixing ring is detachably connected to the front opening of the shell, and the aperture of the screen is smaller than the aperture of the seed fixing hole. In this implementation, the method of using the seed counting or germination rate determination device is as follows:

[0013] (1) The seeds are laid flat in the container, the lower opening of the screen fixing ring is installed on the front opening of the shell, the fan opening is placed horizontally with the fan facing downward and aimed at the seeds, the fan is started, a negative pressure is formed in the fan cover, and the seeds enter the screen fixing ring with the air. Since the aperture of the screen is smaller than the aperture of the seed fixing hole, the irregular seeds are sucked between the screen fixing ring and the partition, the screen fixing ring is removed, and the sucked seeds are poured out;

[0014] (2) The baffle fixing ring is installed at the front opening of the housing, the baffle fixing ring is placed horizontally with the opening facing downward and aligned with the seeds, the fan is started, a negative pressure is formed in the fan cover, and the seeds enter the baffle fixing ring along with the air. Since the diameter of the seed fixing hole in the baffle is between the diameter of the seed tip and the diameter of the seed bulge, the seeds are vertically stuck in the seed fixing hole until the seed fixing hole on the baffle is filled or nearly filled;

[0015] (3) Finally, when the seed attractor is placed horizontally with its open end facing upward, the baffle fixing ring is removed from the fan and transferred to the upper part of the culture dish, and the distance detector and the data processor are turned on. The distance detector measures the distance D1 between the upper part of the seed and the distance detection plate before the seed germinates, and the distance D2 between the upper part of the seed and the distance detection plate after the seed germinates, and sends the distance and the corresponding distance detector code to the data processor;

[0016] (4) The data processor calculates the distance difference d=D1-D2 twice of the distance detector with the same code in sequence. If the difference falls within the set range, it is determined that the seed has germinated. Otherwise, it is determined that the seed has not germinated, and then the seed germination rate is calculated. If the distance D1 falls within the set range, it is determined that the corresponding seed fixing hole is fixed with seeds. Otherwise, the corresponding seed fixing hole is not filled with seeds, and then the number of seeds arranged on the partition is counted.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The partition and the distance detection plate cooperate with each other to achieve accurate determination of the germination rate; (2) The seed attractor can realize automatic placement of seeds without manual placement, saving time and effort; (3) The structure is simple and the method of use is easy to understand and master; (4) The partition can be quickly and stably transferred between the seed attractor and the culture dish by moving the partition fixing ring, avoiding seed displacement when directly taking and placing the partition. (5) The partition can be embedded with a light strip as needed to sterilize the seeds before germination or provide light for seed germination. (6) Compared with the traditional counting plate, the device adopts the method of first screening, then attracting and then counting. The defective or underdeveloped seeds are first screened, and the normal seeds are matched with the appropriate diameter of the partition holes. The attraction process effectively ensures that only a single seed can exist in each hole on the partition, greatly improving the counting accuracy and avoiding counting errors caused by the overlap of wheat seeds. (7) In order to completely eliminate the counting errors caused by the cross-overlapping of incomplete or underdeveloped wheat seeds, a vibrator is added to the partition to ensure that all embedded seeds can exist independently on the small holes of the partition. Description of the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the seed germination rate measuring device involved in Example 1.

[0019] Figure 2 This is a schematic diagram of the distance detection board structure involved in Example 1.

[0020] Figure 3 This is a schematic diagram of the seed attractor structure involved in Example 1.

[0021] Figure 4 This is a schematic diagram of the structure of the seed germination rate measuring device involved in Example 2.

[0022] Figure 5 This is a schematic diagram of the seed attractor structure involved in Example 2. Specific implementation method:

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figure 1-2 As shown, a seed counting or germination rate determination device involved in this embodiment includes a culture dish 1, a partition 2, a distance detection plate 3, a data processor 4 and a partition fixing ring 10, a plurality of seed fixing holes 201 are arranged on the partition 2, each seed fixing hole 201 corresponds to a number, the diameter of the seed fixing hole 201 is between the diameter of the tip of the seed to be germinated and the diameter of the swollen part, the seed to be germinated is vertically placed in the seed fixing hole 201, the edge of the circular partition 2 is fixed on the inner wall of the partition fixing ring 10, the lower opening of the partition fixing ring 10 is detachably connected to the upper opening of the culture dish 1 (such as threaded connection, snap connection), a plurality of distance detectors 301 are arranged on the distance detection plate 3, any distance detection A code is provided inside the device 301. During the test, the distance detection plate 3 is placed directly above the partition 2. The number of the seed fixing hole 201 corresponds to the code of the distance detector 301 one by one, and the distance detector 301 is placed just above the corresponding seed fixing hole 201. The data processor 4 is connected to any distance detector 301. The distance detector 301 is used to measure the distance D1 between the upper part of the seed and the distance detection plate 3 before the seed germination, and the distance D2 between the upper part of the seed and the distance detection plate 3 after the seed germination, and sends the distance and the corresponding distance detector 301 code to the data processor 4. The data processor 4 counts the seeds on the partition and calculates the germination rate based on the distances D1 and D2.

[0026] like Figure 3As shown, a seed counting or germination rate determination device involved in this embodiment also includes a seed attractor, which includes a shell 5, a fan 6, a fan cover 7, a partition net 8 and a handle 9. The barrel-shaped shell 5 has an opening at the front end, and an air outlet 501 is provided on the rear end surface. The fan 6 is installed in the cavity of the shell 5 and the air outlet 602 at the rear end of the fan 6 is close to the air outlet 501. The fan cover 7 is arranged at the front end of the fan 6, and the outer wall of the air inlet 601 of the fan 6 is sealed and connected to the inner wall of the rear end of the fan cover 7. The ventilation holes 701 are evenly distributed on the front end surface of the fan cover 7. The partition net 8 is fixed between the front end of the fan cover 7 and the opening of the shell 5. The lower opening of the partition fixing ring 10 is detachably connected to the front end opening of the shell 5 (such as threaded connection, snap connection), the mesh of the partition net 8 is smaller than the aperture of the seed fixing hole 201, and the gap between the seed fixing holes 201 of the partition 2 is provided with a ventilation hole, and the diameter of the small hole is much smaller than the diameter of the seed fixing hole 201. The seed sucker can automatically discharge the seeds into the seed fixing hole of the partition, thereby improving the seed placement efficiency. In addition, the partition 2 is installed on the partition fixing ring 10, and the partition 2 is switched between the seed sucker and the culture dish by moving the partition fixing ring 10, thereby avoiding the displacement of seeds when the partition 2 is directly taken and placed. At the same time, after removing the partition fixing ring 10, it is also convenient to pour out the dust or incomplete or underdeveloped seeds on the outside of the partition net.

[0027] To facilitate installation, the inner diameters of the partition fixing ring, the culture dish and the opening of the housing 5 are all the same.

[0028] Due to different seed sizes or the presence of incomplete seeds, two or more seeds are contained in one seed fixing hole. As a way of implementation, a vibrator 11 is installed on the annular outer wall of the partition fixing ring 10, and the shriveled and incomplete seeds are vibrated out of the seed fixing hole by the vibrator. Of course, the seeds used in this embodiment can also be pre-screened seeds with uniform size and full grains.

[0029] Specifically, a germination matrix, such as gauze, filter paper or other new materials in solid form, is placed at the bottom of the culture dish 1, and the partition 2 is placed on the germination matrix.

[0030] The seeds are oval or round in shape, with different diameters at the head, middle and tail, and smooth surfaces, such as wheat seeds, sunflower seeds, etc. Different sizes of seeds correspond to different types of partitions. The diameter of the seed fixing hole 201 is between the diameter of the seed tip and the diameter of the seed bulge. When placed, the seeds are fixed in a vertical state in the fixing hole 201. The size and cross-section of the seed fixing hole are designed according to the seeds that need to be germinated. The seed fixing hole can be round or oval, etc. A variety of partitions are designed according to the number and density of the seed fixing holes 2 to meet different experimental needs.

[0031] Specifically, N seed fixing holes 201 are provided on the partition 2, and the seed fixing holes 201 are numbered K001, K002, K003...K00N respectively; correspondingly, N distance detectors 301 are installed on the distance detection plate 3, and the codes of the distance detectors 301 are Q001, Q002, Q003...Q00N respectively. During measurement, the distance detector Q00i is placed just above the seed fixing hole K00i, and is used to detect the distance between the seed head in the seed fixing hole K00i and the distance detection plate 3, and i is a positive integer from 0 to N.

[0032] Preferably, the partition plate 2 is provided with N seed fixing holes 201 arranged in an array of X rows and Y columns, and the seed fixing holes 201 are numbered K011, K012, K013 ... K01Y, K021, K022, K023 ... K02Y, ..., K0X1, K0X2, K0X3 ... K0XY; correspondingly, the distance detection plate 3 is installed with N distance detectors 301 arranged in an array of X rows and Y columns, and the coding of the distance detector 301 is They are Q011, Q012, Q013...Q01Y, Q021, Q022, Q023...Q02Y,..., Q0X1, Q0X2, Q0X3...Q0XY, and the distance detector Q0xy is placed just above the seed fixing hole K0xy, x is a positive integer from 1 to X, and y is a positive integer from 1 to Y, that is, the number of the seed fixing hole 201 and the code of the distance detector 301 contain specific information about which row and column it belongs to. Based on this information, the position of the ungerminated seeds can be accurately understood, and the position of the distance detector 301 with problems can also be accurately understood.

[0033] The specific method of using the seed counting or germination rate determination device involved in this embodiment specifically includes the following steps:

[0034] (1) The seeds are laid flat in the container, and the partition fixing ring 10 is installed at the front opening of the shell 5. The partition fixing ring 10 is placed horizontally with the opening facing downward and is aligned with the seeds. The fan 6 is started to form a negative pressure in the fan cover 7. The seeds enter the partition fixing ring 10 along with the air. Since the diameter of the seed fixing hole in the partition 2 is between the diameter of the seed tip and the diameter of the seed bulge, the seeds are vertically stuck in the seed fixing hole;

[0035] (2) The fan 6 is opened upward, the fan 6 is turned off, and the vibrator is turned on. The seeds are arranged neatly on the partition through vibration, and smaller or broken seeds and other abnormal seeds fall off, ensuring that the seed fixing holes are filled with full seeds of uniform size;

[0036] (3) Repeat steps (1)-(2) until the seed fixing holes 201 on the partition 2 are filled or nearly filled. During the experiment, it was found that most seeds can be arranged in a vertical state smoothly. For individual seed fixing holes with problems, manual adjustments are made as needed.

[0037] (4) Finally, in a state where the seed attractor is placed horizontally with its open end facing upward, the baffle fixing ring is removed from the fan 6 and transferred to be installed on the upper part of the culture dish 1, and the distance detector 301 and the data processor 4 are turned on. The distance detector 301 measures the distance D1 between the upper part of the seed and the distance detection plate 3 before the seed germination, and the distance D2 between the upper part of the seed and the distance detection plate 3 after the seed germination, and sends the distance and the corresponding distance detector 301 code to the data processor 4;

[0038] (5) The data processor 4 sequentially calculates the distance difference d=D1-D2 twice of the distance detector 301 with the same code. If the difference falls within the set range, it is determined that the seed has germinated. Otherwise, it is determined that the seed has not germinated, and then the seed germination rate is calculated. If the distance D1 falls within the set range, it is determined that the corresponding seed fixing hole 201 is fixed with seeds. Otherwise, the corresponding seed fixing hole 201 is not filled with seeds, and then the number of seeds arranged on the partition 2 is counted.

[0039] Example 2

[0040] like Figure 4 As shown, a seed counting or germination rate determination device involved in this embodiment includes a culture dish 1, a partition 2, a distance detection plate 3, a data processor 4 and a partition fixing ring 10, a plurality of seed fixing holes 201 are arranged on the partition 2, each seed fixing hole 201 corresponds to a number, the diameter of the seed fixing hole 201 is between the diameter of the seed tip and the diameter of the seed swelling part, the seed is vertically placed in the seed fixing hole 201, the partition 2 is installed in the partition fixing ring 10, the lower opening of the partition fixing ring 10 is detachably connected to the upper opening of the culture dish 1 (such as threaded connection, snap connection), a plurality of distance detectors 301 are arranged on the distance detection plate 3, and any distance detector 301 is arranged in A code is provided in the part. During the test, the distance detection plate 3 is placed directly above the partition 2. The number of the seed fixing hole 201 corresponds to the code of the distance detector 301 one by one, and the distance detector 301 is placed just above the corresponding seed fixing hole 201. The data processor 4 is connected to any distance detector 301. The distance detector 301 is used to measure the distance D1 between the upper part of the seed and the distance detection plate 3 before the seed germination, and the distance D2 between the upper part of the seed and the distance detection plate 3 after the seed germination, and sends the distance and the corresponding distance detector 301 code to the data processor 4. The data processor 4 counts the seeds on the partition and calculates the germination rate based on the distances D1 and D2.

[0041] like Figure 5 As shown, a seed counting or germination rate determination device involved in this embodiment also includes a seed attractor, which includes a shell 5, a fan 6, a fan cover 7, a partition 8, a handle 9, a screen 13 and a screen fixing ring 12. The barrel-shaped shell 5 has an opening at the front end, and an air outlet 501 is provided on the rear end surface. The fan 6 is installed in the cavity of the shell 5 and the air outlet 602 at the rear end of the fan 6 is close to the air outlet 501. The fan cover 7 is arranged at the front end of the fan 6, and the outer wall of the air inlet 601 of the fan 6 is sealed and connected to the inner wall of the rear end of the fan cover 7. The ventilation holes 701 are evenly distributed on the front end surface of the fan cover 7. The front end of the fan cover 7 and the shell 5, the partition net 8 is fixed between the openings, the lower opening of the partition fixing ring 10 is detachably connected to the front end opening of the shell 5 (such as threaded connection, snap connection), the mesh of the partition net 8 is smaller than the aperture of the seed fixing hole 201 on the partition 2, the gap between the seed fixing holes 201 of the partition 2 is provided with a ventilation hole, the diameter of the small hole is much smaller than the diameter of the seed fixing hole 201, the edge of the circular screen 13 is fixed on the inner wall of the screen fixing ring 12, the lower opening of the screen fixing ring 12 is detachably connected to the front end opening of the shell 5 (such as threaded connection, snap connection), and the aperture of the screen 13 is smaller than the aperture of the seed fixing hole 201.

[0042] The specific method of using the seed counting or germination rate determination device involved in this embodiment specifically includes the following steps:

[0043] (1) The seeds are laid flat in the container, the lower opening of the screen fixing ring 12 is installed on the front opening of the housing 5, the fan 6 is placed horizontally with the opening facing downward and aimed at the seeds, the fan 6 is started, a negative pressure is formed in the fan cover 7, and the seeds enter the screen fixing ring 12 along with the air. Since the aperture of the screen is smaller than the aperture of the seed fixing hole 201, the irregular seeds are sucked between the screen fixing ring 12 and the partition 8, the screen fixing ring 12 is disassembled, and the sucked seeds are poured out;

[0044] (2) The partition fixing ring 10 is installed at the front opening of the housing 5. The partition fixing ring 10 is placed horizontally with the opening facing downward and is aimed at the seeds. The fan 6 is started to form a negative pressure in the fan cover 7. The seeds enter the partition fixing ring 10 along with the air. Since the diameter of the seed fixing hole in the partition 2 is between the diameter of the seed tip and the diameter of the seed bulge, the seeds are vertically stuck in the seed fixing hole until the seed fixing hole 201 on the partition 2 is filled or nearly filled.

[0045] (3) Finally, in a state where the seed attractor is placed horizontally with its open end facing upward, the baffle fixing ring is removed from the fan 6 and transferred to be installed on the upper part of the culture dish 1, and the distance detector 301 and the data processor 4 are turned on. The distance detector 301 measures the distance D1 between the upper part of the seed and the distance detection plate 3 before the seed germination, and the distance D2 between the upper part of the seed and the distance detection plate 3 after the seed germination, and sends the distance and the corresponding distance detector 301 code to the data processor 4;

[0046] (4) The data processor 4 sequentially calculates the distance difference d=D1-D2 twice of the distance detector 301 with the same code. If the difference falls within the set range, it is determined that the seed has germinated. Otherwise, it is determined that the seed has not germinated, and then the seed germination rate is calculated. If the distance D1 falls within the set range, it is determined that the corresponding seed fixing hole 201 is fixed with seeds. Otherwise, the corresponding seed fixing hole 201 is not filled with seeds, and then the number of seeds arranged on the partition 2 is counted.

Claims

1. A seed counting or germination rate measuring device, characterized in that: The invention comprises a culture dish, a partition, a distance detection plate, a data processor and a partition fixing ring. A plurality of seed fixing holes are arranged on the partition, each of which corresponds to a number. The diameter of the seed fixing hole is between the diameter of the tip of the seed to be germinated and the diameter of the swelling part. The seed to be germinated is vertically placed in the seed fixing hole. The edge of the circular partition is fixed on the inner wall of the partition fixing ring. The lower opening of the partition fixing ring is detachably connected with the upper opening of the culture dish. A plurality of distance detectors are arranged on the distance detection plate, and a code is arranged inside any distance detector. During testing, the distance detection plate is placed directly above the partition. The seed fixing hole number corresponds to the code of the distance detector one by one and the distance detector is placed just directly above the corresponding seed fixing hole. The data processor is connected to any distance detector. The distance detector is used to measure the distance D1 between the upper part of the seed and the distance detection plate before the seed germinates, and the distance D2 between the upper part of the seed and the distance detection plate after the seed germinates, and the distance and the corresponding distance detector code are sent to the data processor together. The data processor counts the seeds on the partition and calculates the germination rate based on the distances D1 and D2.

2. The seed counting or germination rate measuring device according to claim 1, characterized in that: The seed counting or germination rate determination device also includes a seed attractor, which includes an outer shell, a fan, a fan cover, a partition net and a handle. The front end of the barrel-shaped outer shell is open, and the rear end surface is provided with an air outlet. The fan is installed in the outer shell cavity and the air outlet at the rear end of the fan is close to the air outlet. The fan cover is arranged at the front end of the fan, and the outer wall of the air inlet of the fan is sealed and connected to the inner wall at the rear end of the fan cover. Ventilation holes are evenly distributed on the front end surface of the fan cover. A partition net is fixed between the front end of the fan cover and the outer shell opening. The lower opening of the partition fixing ring is detachably connected to the front end opening of the outer shell. The mesh of the partition net is smaller than the aperture of the seed fixing hole. The gap between the seed fixing holes of the partition is provided with small ventilation holes, and the diameter of the small holes is much smaller than the diameter of the seed fixing holes.

3. The seed counting or germination rate measuring device according to claim 2, characterized in that: A vibrator is installed on the annular outer wall of the partition fixing ring 10.

4. The method for using the seed counting or germination rate measuring device according to claim 3, characterized in that: Specifically include: (1) The seeds are laid flat in the container, and the baffle fixing ring is installed at the front opening of the shell. The baffle fixing ring is placed horizontally with the opening facing downward and aligned with the seeds. The fan is started to form a negative pressure in the fan cover, and the seeds enter the baffle fixing ring along with the air. Since the diameter of the seed fixing hole in the baffle is between the diameter of the seed tip and the diameter of the seed bulge, the seeds are vertically stuck in the seed fixing hole; (2) The fan opening is facing upwards, the fan is turned off, and the vibrator is turned on. The seeds are arranged neatly on the partition through vibration, and smaller or broken seeds are dropped off; (3) Repeat steps (1)-(2) until the seed fixing holes on the partition 2 are filled or nearly filled; (4) Finally, when the seed attractor is placed horizontally with its open end facing upward, the baffle fixing ring is removed from the fan and transferred to the upper part of the culture dish, and the distance detector and the data processor are turned on. The distance detector measures the distance D1 between the upper part of the seed and the distance detection plate before the seed germinates, and the distance D2 between the upper part of the seed and the distance detection plate after the seed germinates, and sends the distance and the corresponding distance detector code to the data processor; (5) The data processor calculates the distance difference d=D1-D2 twice of the distance detector with the same code in sequence. If the difference falls within the set range, it is determined that the seed has germinated. Otherwise, it is determined that the seed has not germinated, and then the seed germination rate is calculated. If the distance D1 falls within the set range, it is determined that the corresponding seed fixing hole is fixed with seeds. Otherwise, the corresponding seed fixing hole is not filled with seeds, and then the number of seeds arranged on the partition 2 is counted.

5. The seed counting or germination rate measuring device according to claim 2, characterized in that: The seed attractor also includes a screen and a screen fixing ring. The lower opening of the screen fixing ring is detachably connected to the front end opening of the shell. The aperture of the screen is smaller than the aperture of the seed fixing hole.

6. The method for using the seed counting or germination rate measuring device according to claim 5, characterized in that: Specifically include: (1) The seeds are laid flat in the container, the lower opening of the screen fixing ring is installed on the front opening of the shell, the fan opening is placed horizontally with the fan facing downward and aimed at the seeds, the fan is started, a negative pressure is formed in the fan cover, and the seeds enter the screen fixing ring with the air. Since the aperture of the screen is smaller than the aperture of the seed fixing hole, the irregular seeds are sucked between the screen fixing ring and the partition, the screen fixing ring is removed, and the sucked seeds are poured out; (2) The baffle fixing ring is installed at the front opening of the housing, the baffle fixing ring is placed horizontally with the opening facing downward and aligned with the seeds, the fan is started, a negative pressure is formed in the fan cover, and the seeds enter the baffle fixing ring along with the air. Since the diameter of the seed fixing hole in the baffle is between the diameter of the seed tip and the diameter of the seed bulge, the seeds are vertically stuck in the seed fixing hole until the seed fixing hole on the baffle is filled or nearly filled; (3) Finally, when the seed attractor is placed horizontally with its open end facing upward, the baffle fixing ring is removed from the fan and transferred to the upper part of the culture dish, and the distance detector and the data processor are turned on. The distance detector measures the distance D1 between the upper part of the seed and the distance detection plate before the seed germinates, and the distance D2 between the upper part of the seed and the distance detection plate after the seed germinates, and sends the distance and the corresponding distance detector code to the data processor; (4) The data processor calculates the distance difference d=D1-D2 twice of the distance detector with the same code in sequence. If the difference falls within the set range, it is determined that the seed has germinated. Otherwise, it is determined that the seed has not germinated, and then the seed germination rate is calculated. If the distance D1 falls within the set range, it is determined that the corresponding seed fixing hole is fixed with seeds. Otherwise, the corresponding seed fixing hole is not filled with seeds, and then the number of seeds arranged on the partition is counted.

Images