CN114923614B - Device and method for measuring seed germination force - Google Patents

Abstract

The invention discloses a seed emergence force measuring device and a seed emergence force measuring method, wherein the measuring device comprises a bracket, a breeding module for cultivating seeds and a measuring module for measuring seed emergence force, wherein the breeding module comprises a seed basin arranged above the bracket and a breeding table arranged in the seed basin, a through hole is formed in the middle of the breeding table, and a mounting hole is formed in the bottom of the seed basin at a position corresponding to the breeding table; the measuring module comprises a push-pull dynamometer arranged below the bracket, an enveloping part enveloping the seeds, and a connecting structure connecting the enveloping part with a hook of the push-pull dynamometer, wherein the axis of the push-pull dynamometer is coincident with the axis of the breeding platform in the vertical direction. The seedling emergence force measuring device can conveniently and accurately measure the seedling emergence force.

Description

Device and method for measuring seed germination force

technical field

The invention relates to an agricultural measuring device, in particular to a device and method for measuring seed emergence force.

Background technique

The emergence of seeds will go through the emergence stage, which refers to the process of hypocotyl growth supporting the emergence of cotyledons of seeds. The main driver of the emergence phase is the growth of the seedling in the soil. Growing seedlings encounter soil resistance as they move upwards through the soil, so soil resistance is the main constraint on plant emergence growth. If the seedlings cannot overcome the soil resistance, even if the environmental conditions such as water, temperature and oxygen are sufficient, the seedlings will not emerge from the soil surface. The method of using a wax layer to simulate soil crusts in the field has also been used to study the resistance produced by soil crusts. Exploring this negative effect on leaf expansion and growth rate, the measurement of soil resistance to seedlings has been very challenging due to its microscopic scale. There are many existing methods for measuring soil: (1) measuring the soil rupture modulus to indirectly infer the resistance of soil emergence; (2) using a cone penetrometer to measure soil cone index to evaluate soil resistance; (3) using mechanical seedling vertical Push up through the soil to measure soil resistance.

Although the above measurement methods can estimate the soil resistance, there are still the following problems:

1. The resistance of the soil to the growing seedling is a downward force, while the penetrometer that pushes down the soil profile measures an upward force, resulting in the measurement of the soil resistance using the penetrometer and the actual There is a large error in the situation.

2. Mechanical seedlings are probes developed to simulate the growth of seedlings in soil, and at the same time, they are used to monitor the soil impedance applied to the probe, but the shape of the vertex of the probe does not represent the shape of the seedlings, so the measurement results are still consistent with the actual situation There are deviations.

3. The resistance of the soil to the seedlings is very small, and the technology to measure such a small force is not advanced enough to obtain accurate measurement results.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a seed emergence force measuring device, which can conveniently and accurately measure the size of the seed emergence force when the seeds emerge and grow.

Another object of the present invention is to provide a method for measuring seed germination force using the above-mentioned measuring device.

The technical scheme that the present invention solves the problems of the technologies described above is:

A device for measuring seed emergence force, comprising a support, a breeding module for cultivating seeds, and a measurement module for measuring seed emergence force, wherein the breeding module includes a seed pot arranged above the support and a seed pot arranged in the seed pot Breeding platform, the middle part of the breeding platform is provided with a through hole, and the bottom of the seed basin is provided with a mounting hole at a position corresponding to the breeding platform; The enveloping part above the seeds and the connection structure connecting the enveloping part with the hook of the push-pull dynamometer, the axis of the push-pull dynamometer coincides with the axis of the breeding platform in the vertical direction.

The working principle of above-mentioned seedling force measuring device is:

Firstly, the breeding platform is plugged into the installation hole at the bottom of the seed pot, and the selected seeds are placed on the breeding platform and located below the envelope component; then, the upper part of the connection structure is connected to the envelope component, and Pass the connection structure through the through hole of the breeding platform, and insert the breeding platform into the installation hole at the bottom of the inoculation basin, so that the through hole communicates with the outside world, and the connection structure passes through the through hole of the breeding platform and will pass through the seed basin; The lower part of the connection structure is connected with the hook of the push-pull dynamometer; in the next step, the soil is poured into the seed pot, so that the surrounding of the breeding platform is filled with soil, which is convenient for the seeds to germinate and emerge. When the seeds germinate and emerge, the envelope will be pushed upwards Parts, the enveloping part is connected with the hook of the push-pull dynamometer through the connection structure, and the upward movement of the enveloping part will pull up the hook of the push-pull dynamometer. Since the axis of the push-pull dynamometer coincides with the axis of the breeding platform, the seeds When the envelope part is pushed up, the force can be directly transmitted to the push-pull dynamometer through the connection structure, so as to accurately display the magnitude of the pulling force, which is the magnitude of the seed emergence force; finally, the continuous detection of the seed During the emergence process, the force value data is transmitted to the computer for storage.

In a preferred solution of the present invention, the envelope component includes an envelope body for attaching to the upper surface of the seed and a plurality of connection holes for connecting with the connection structure, and the plurality of connection holes are arranged on the outer edge of the envelope body.

Preferably, a rectangular hole is provided in the middle of the envelope body, and there are four connecting holes, and the four connecting holes are distributed outside the four inner corners of the rectangular hole.

In a preferred solution of the present invention, the connection structure includes an upper connection part for connecting with the envelope component and a lower connection part for connecting with the hook of the push-pull dynamometer; the upper connection part includes four thin copper wires , the lower connection part includes a tension spring, the upper ends of the four thin copper wires are respectively connected to the four connection holes, the lower ends are tied into a bunch and connected to the upper ends of the tension springs, and the lower ends of the tension springs are connected to the push-pull measuring to the hook of the dynamometer.

In a preferred solution of the present invention, the support includes a base, a support rod arranged on the base, a breeding frame for installing a breeding module, and a clamping frame for installing a push-pull dynamometer; one end of the support rod is installed on On the base, the other end extends upwards in the vertical direction; the breeding frame is arranged on the upper part of the support rod, and the clamping frame is arranged below the breeding frame.

Preferably, there are two support rods, and the two support rods are respectively arranged at both ends of the base; both sides of the clamping frame are respectively connected with two support rods; Connect with two supporting rods respectively.

In a preferred solution of the present invention, the breeding frame includes a seed pot table fixedly connected to the upper part of the support rod and a clamping sleeve arranged above the seed pot table; An escape hole for copper wire, the inner diameter of the clamping sleeve matches the outer diameter of the seed pot.

In a preferred solution of the present invention, the clamping frame includes a first clamping piece and a second clamping piece, the first clamping piece includes a clamping portion and a connecting portion for connecting with a support rod, the clamping The holding part includes a clamping groove for clamping the push-pull dynamometer and bolt holes arranged on both sides of the clamping part, and the connecting part is provided with a connecting through hole matched with the support rod; the second clamping The holder includes a clamping portion and a connecting portion for connecting with the support rod, the clamping portion includes a clamping groove for clamping the push-pull dynamometer and threaded holes arranged on both sides of the clamping portion, the connection The part is provided with a connection through hole matched with the support rod.

Preferably, there are two sets of clamping frames, one set is set at the upper end of the push-pull dynamometer, and the other set is set at the lower end of the push-pull dynamometer.

In a preferred solution of the present invention, the breeding platform is a hollow tube.

A method utilizing said emergence force measuring device to measure seed emergence force, comprising the following steps:

(1) Plug the breeding platform into the installation hole at the bottom of the seed pot, so that the breeding platform is fixedly installed in the seed pot; place the selected seeds on the breeding platform, and cover the upper surface of the seeds with the enveloping parts;

(2) The upper ends of the four thin copper wires are respectively connected to the connection holes on the enveloping parts, and the lower ends of the four thin copper wires are passed out of the seed pot from the through holes of the breeding platform;

(3) Tie the lower ends of the four thin copper wires into a bundle and connect them to the upper end of the extension spring, and connect the lower end of the extension spring to the hook of the push-pull dynamometer;

(4) Pour the soil into the seed pot, so that the surroundings of the breeding platform are filled with soil, so that the seeds germinate and emerge; the seeds germinate and emerge and push the enveloping parts upwards, and the enveloping parts push the thin copper wires and extension springs upwards, Pull up the hook of the push-pull dynamometer to measure the emergence force;

(5) Continuously detect the emergence process of the seeds, and transmit the force value data to the computer for storage.

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

1. In the device for measuring seed emergence force of the present invention, the enveloping part is covered on the upper surface of the seed, and the enveloping part and the push-pull dynamometer are connected by a connection structure, and the seeds, the connection structure and the push-pull dynamometer are located in the same In the vertical direction, when the seeds germinate and emerge, the enveloping part will be pushed up, so that the hook of the push-pull dynamometer is pulled through the connection structure, and the seed emergence force can be directly and conveniently measured.

2. The seed emergence force measuring device of the present invention, when the seeds germinate and emerge, pushes the enveloping part, can directly transfer the force to the push-pull dynamometer through the connection structure, thereby accurately displaying the magnitude of the pulling force, and can detect the seeds in real time Changes in germination force and store force value data.

Description of drawings

Fig. 1-Fig. 6 is the schematic diagram of seed emergence force measuring device of the present invention, and wherein Fig. 1 is main view, Fig. 2 is the perspective view of the first direction, Fig. 3 is the perspective view of the second direction, Fig. 4 is the 3rd The perspective view of the direction, Fig. 5 is a perspective view of a part of the seed pot, and Fig. 6 is a perspective view of the enveloping part.

Fig. 7 is a flowchart of a method for measuring emergence force.

Detailed ways

The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Referring to Fig. 1-Fig. 6, a kind of seed emergence force measuring device comprises support, is used for cultivating the breeding module of seed and is used for measuring the measurement module of seed emergence force, wherein, described breeding module comprises the seed pot that is arranged on support 1 and a breeding platform 2 arranged in the seed pot 1, the middle part of the breeding platform 2 is provided with a through hole 3, and the bottom of the seed basin 1 is provided with an installation hole at a position corresponding to the breeding platform 2; the measuring module Comprising a push-pull dynamometer 4 arranged below the support, an enveloping part 5 wrapped above the seeds, and a connection structure that connects the enveloping part 5 with the hook of the push-pull dynamometer 4, the push-pull dynamometer 4 The axis coincides with the axis of the breeding platform 2 in the vertical direction.

Referring to Fig. 1-Fig. 6, the enveloping part 5 includes an enveloping body for attaching to the upper surface of the seed and a plurality of connection holes 6 for connecting with the connection structure, and the plurality of connection holes 6 are arranged on the enveloping body outer edge. The above-mentioned enveloping part 5 is set, and in the process of measuring the emergence force of the seeds, when the seeds emerge, they are pushed up, and an upward thrust is generated on the envelope main body, and the connection structure connected to the connection hole 6 is pulled upward, thereby upward Pull the push-pull dynamometer 4 to measure the emergence force of the seeds.

Referring to Fig. 1-Fig. 6, the middle part of the envelope body is provided with a rectangular hole, and there are four connecting holes 6, and the four connecting holes 6 are distributed outside the four inner corners of the rectangular hole. A rectangular hole is set in the middle of the envelope body to facilitate the entry of water or sunlight, and the positions of the four connecting holes 6 correspond to the positions of the four inner corners of the rectangular hole, so that the four connecting holes 6 are symmetrical about the symmetry axis of the rectangular hole distribution, so that when the seeds push the envelope component 5 upwards, the force balance of the envelope component 5 is ensured, and the measured emergence force is more accurate and reliable.

Referring to Fig. 1-Fig. 6, the connection structure includes an upper connection part for connecting with the enveloping part 5 and a lower connection part for connecting with the hook of the push-pull dynamometer 4; the upper connection part includes four thin Copper wire 7, described lower connecting part comprises extension spring 8, and the upper end of four fine copper wires 7 is connected with four described connecting holes 6 respectively, and the lower end is tied into a bunch and is connected on the upper end of described extension spring 8, and described extension spring 8 The lower end of spring 8 is connected on the hook of push-pull force gauge 4. Above-mentioned connecting structure is set, and after four fine copper wires 7 are connected with connecting hole 6, be tied into a bundle, and pass through the through hole 3 of breeding platform 2, be connected with extension spring 8 below, adjust the position, make the bundled below The thin copper wire 7, the tension spring 8 and the push-pull dynamometer 4 are all kept vertical, so that when the seeds push up the envelope part 5, the thrust can be directly and accurately transmitted to the push-pull dynamometer 4, thereby accurately measuring the emergence Magnitude of the force.

Referring to Fig. 1-Fig. 6, the support includes a base 9, a support rod 10 arranged on the base 9, a breeding frame 11 for installing a breeding module and a clamping frame 12 for installing a push-pull dynamometer 4; One end of the support rod 10 is installed on the base 9, and the other end extends upwards in the vertical direction; Among the above supports, the clamping frame 12 is set under the breeding frame 11, and the breeding module is set above the push-pull dynamometer 4. When the seeds germinate and emerge, the enveloping part 5 is pushed upward, and the push-pull is pulled upward through the connecting structure Dynamometer 4, thereby measures the size of seed germination force.

Referring to Fig. 1-Fig. 6, described support rod 10 has two, and two described support rods 10 are arranged on the two ends of described base 9 respectively; Connection; both sides of the breeding frame 11 are respectively connected with two support rods 10 . Two supporting rods 10 are arranged, so that the stress of the clamping frame 12 and the breeding frame 11 is more balanced, more stable and reliable.

Referring to Fig. 1-Fig. 6, the breeding rack 11 includes a seed pot platform 11-1 fixedly connected to the upper part of the support rod 10 and a clamping sleeve 11-2 arranged above the seed pot platform 11-1; The middle part of the pot platform 11-1 is provided with a hole for avoiding the thin copper wire 7, and the inner diameter of the clamping sleeve 11-2 matches the outer diameter of the seed pot 1. The above-mentioned breeding frame 11 is set, and in the working state, the seed pot 1 is placed on the seed pot platform 11-1, and the position of the evacuation hole is aligned with the through hole 3 of the breeding platform 2, so that the thin copper wire 7 can be inserted from the seed pot 1 After coming out, pass through the avoidance hole and connect with the tension spring 8 below; the clamping sleeve 11-2 is sleeved on the circumferential side of the seed pot 1, and plays the role of clamping and fixing the seed pot 1.

1-6, the clamping frame 12 includes a first clamping piece 12-1 and a second clamping piece 12-2, and the first clamping piece 12-1 includes a clamping part and is used to communicate with The connecting portion connected to the support rod 10, the clamping portion includes a clamping groove 12-3 for clamping the push-pull dynamometer 4 and bolt holes arranged on both sides of the clamping portion, the connecting portion is provided with The supporting rod 10 is matched with a connection through hole 12-4; the second clamping member 12-2 includes a clamping part and a connecting part for connecting with the supporting rod 10, and the clamping part includes a clamping part for clamping The clamping groove 12 - 3 of the push-pull dynamometer 4 and the threaded holes provided on both sides of the clamping part, the connecting part is provided with a connecting through hole 12 - 4 matching the support rod 10 . The above-mentioned clamping frame 12 is set, and the first clamping member 12-1 is connected to one of the support rods 10 through the connecting through hole 12-4, and the position of the clamping part is adjusted so that the clamping groove 12-3 is clamped on the Push and pull one side of the dynamometer 4; the second clamping member 12-2 is connected to the other support rod 10 through the connecting through hole 12-4, and the position of the clamping part is adjusted so that the clamping groove 12-3 Clamp on the other side of the push-pull dynamometer 4, and pass the screw through the bolt through hole 3 to match the threaded hole, so that the first clamping part 12-1 and the second clamping part 12-2 will push and pull the dynamometer The force gauge 4 is hugged and fixed.

Referring to FIGS. 1-6 , there are two sets of clamping frames 12 , one set is set at the upper end of the push-pull dynamometer 4 , and the other set is set at the lower end of the push-pull dynamometer 4 . Two sets of clamping frames 12 are provided, respectively clamped at both ends of the push-pull dynamometer 4, so that the push-pull dynamometer 4 is stably and reliably installed on the bracket.

Referring to Fig. 1-Fig. 6, the breeding platform 2 is a hollow tube. Use the hollow tube as the breeding platform 2, place the seeds on the top of the hollow tube, cover the enveloping part 5, and the thin copper wire 7 can directly pass through the seed pot 1 from the inside of the hollow tube to connect with the lower tension spring 8, which is convenient and practical.

Referring to Fig. 7, a kind of method for measuring seed germination power, comprises the following steps:

(1) Plug the breeding platform 2 into the installation hole at the bottom of the seed pot 1, so that the breeding platform 2 is fixedly installed in the seed pot 1; place the selected seeds on the breeding platform 2, and cover the enveloping part 5 on the the upper surface of the seed;

(2) The upper ends of the four thin copper wires 7 are respectively connected to the connecting holes 6 on the envelope member 5, and the lower ends of the four thin copper wires 7 are passed through the seed pot 1 from the through hole 3 of the breeding platform 2;

(3) tie the lower ends of four thin copper wires 7 into a bundle, and connect with the upper end of extension spring 8, and connect the lower end of extension spring 8 with the hook of push-pull dynamometer 4;

(4) Pour the soil into the seed pot 1, so that the surroundings of the breeding platform 2 are filled with soil, so that the seeds germinate and emerge; the seeds germinate and emerge to push up the envelope part 5, and the envelope part 5 pushes up the thin copper wire 7 and extension spring 8, pull up the hook of push-pull dynamometer 4, measure and obtain the size of emergence force;

(5) Continuously detect the emergence process of the seeds, and transmit the force value data to the computer for storage.

The working principle of above-mentioned seedling force measuring device is:

First, insert the breeding platform 2 into the installation hole at the bottom of the seed pot 1, and place the selected seeds on the breeding platform 2, and be located below the envelope part 5; then, connect the upper part of the connection structure with the envelope Components 5 are connected, and the connection structure passes through the through hole 3 of the breeding platform 2, and the breeding platform 2 is inserted into the installation hole at the bottom of the inoculation pot 1, so that the through hole 3 communicates with the outside world, and the connection structure passes through the through hole 3 of the breeding platform 2 Will pass out from the seed pot 1; Then, connect the lower part of the connecting structure with the hook of the push-pull dynamometer 4; Next step, pour the soil into the seed pot 1, so that the breeding platform 2 is filled with soil around, which is convenient Seeds germinate and emerge. When the seeds germinate and emerge, the envelope part 5 will be pushed upwards. The envelope part 5 is connected with the hook of the push-pull dynamometer 4 through the connection structure. When the envelope part 5 moves upward, it will pull up the push-pull force measurement For the hook of meter 4, since the axis of push-pull dynamometer 4 coincides with the axis of breeding platform 2, when the seeds push up the enveloping part 5, the force can be directly transmitted to push-pull dynamometer 4 through the connection structure, thereby The magnitude of the pulling force is accurately displayed, and the magnitude of the pulling force is the magnitude of the seed emergence force; finally, the process of seed emergence is continuously detected, and the force value data is transmitted to the computer for storage.

The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above content, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention are all Replacement methods that should be equivalent are all included within the protection scope of the present invention.

Claims (7)

1. a kind of seed emergence force measurement device, it is characterized in that, comprise support, be used for cultivating the breeding module of seed and be used to measure the measurement module of seed emergence force, wherein, described breeding module comprises the seed pot that is arranged on support top and The breeding platform arranged in the seed pot, the middle part of the breeding platform is provided with a through hole, and the bottom of the seed basin is provided with a mounting hole at a position corresponding to the breeding platform; the measurement module includes a push-pull measuring device arranged under the support A force gauge, an enveloping part wrapped above the seeds, and a connection structure connecting the enveloping part with the hook of the push-pull dynamometer, the axis of the push-pull dynamometer coincides with the axis of the breeding platform in the vertical direction; The enveloping part includes an enveloping body for bonding with the upper surface of the seed and a plurality of connection holes for connecting with the connection structure, and the plurality of connection holes are arranged on the outer edge of the enveloping body; The middle part of the enveloping body is provided with a rectangular hole, and there are four connecting holes, and the four connecting holes are distributed outside the four inner corners of the rectangular hole; The connection structure includes an upper connection part used to connect with the enveloping part and a lower connection part used to connect with the hook of the push-pull dynamometer; the upper connection part includes four thin copper wires, and the lower connection part includes As for the extension spring, the upper ends of the four thin copper wires are respectively connected with the four connecting holes, and the lower ends are connected in a bunch to the upper end of the extension spring, and the lower end of the extension spring is connected to the hook of the push-pull dynamometer. 2. A kind of seed emergence force measurement device according to claim 1, is characterized in that, described support comprises base, the support bar that is arranged on base, is used for the breeding frame of breeding module and is used for installing push-pull force measuring device One end of the support rod is installed on the base, and the other end extends vertically upwards; the breeding frame is arranged on the upper part of the support rod, and the clamping frame is arranged on the top of the breeding frame below. 3. A kind of seed germination force measurement device according to claim 2, is characterized in that, described support rod has two, and two described support rods are respectively arranged on the two ends of described base; The two sides of the breeding frame are respectively connected with two support rods; the two sides of the breeding rack are respectively connected with two support rods. 4. a kind of seed germination force measuring device according to claim 3, is characterized in that, described breeding frame comprises the kind of basin platform that is fixedly connected on described support bar top and the clamping cover that is arranged on kind of basin platform top; The middle part of the seed pot platform is provided with an escape hole for avoiding the thin copper wire, and the inner diameter of the clamping sleeve matches the outer diameter of the seed pot. 5. The device for measuring seed emergence force according to claim 3, wherein the clamping frame comprises a first clamping part and a second clamping part, and the first clamping part comprises a clamping part and a connecting part for connecting with the support bar, the clamping part includes a clamping groove for clamping the push-pull dynamometer and bolt holes arranged on both sides of the clamping part, and the connecting part is provided with the The connecting through hole matched with the support rod; the second clamping member includes a clamping part and a connecting part for connecting with the support rod, and the clamping part includes a clamping groove for clamping the push-pull dynamometer and The threaded holes are arranged on both sides of the clamping part, and the connecting part is provided with a connecting through hole matched with the supporting rod. 6. A kind of seed emergence force measurement device according to claim 5, it is characterized in that, described clamping frame has two groups, wherein one group is arranged on the upper end of push-pull dynamometer, and another group is arranged on the push-pull force measuring device. bottom of the meter. 7. A method utilizing any one of claim 1-6 to measure seed emergence force using the emergence force measuring device, comprising the following steps: (1) Insert the breeding platform into the installation hole at the bottom of the seed pot, so that the breeding platform is fixedly installed in the seed pot; place the selected seeds on the breeding platform, and cover the upper surface of the seeds with the enveloping parts; (2) Connect the upper ends of the four thin copper wires to the connection holes on the enveloping parts respectively, and pass the lower ends of the four thin copper wires out of the seed pot through the through holes of the breeding platform; (3) Tie the lower ends of the four thin copper wires into a bundle and connect them to the upper end of the extension spring, and connect the lower end of the extension spring to the hook of the push-pull dynamometer; (4) Pour the soil into the seed pot, so that the soil around the breeding platform is filled with soil, which is convenient for the seeds to germinate and emerge; when the seeds germinate and emerge, push up the envelope parts, and the envelope parts push up the thin copper wires and tension springs, Pull up the hook of the push-pull dynamometer to measure the emergence force; (5) Continuously detect the emergence process of seeds, and transmit the force value data to the computer for storage.

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