A pollination box and a method of using the same in pollination of Lagerstroemia indica

Abstract

The application provides a pollination box and a method for using the same in pollination of Lagerstroemia indica. The pollination box comprises a box body, a wind supply mechanism and a plurality of heat preservation units. The heat preservation unit comprises a base, a loading cup and a valve mechanism. The valve mechanism is used for synchronously blocking or opening the connection state of the air inlet hole and the first air inlet channel and the connection state of the air outlet hole and the first air outlet channel. The wind supply mechanism is used for delivering cold air to the first air inlet channel and for discharging the airflow in the first air outlet channel out of the box body. When the loading cup is installed in the installation groove, the loading cup covers the slot of the installation groove. The loading cup drives the valve mechanism to open the air inlet hole and the air outlet hole, so as to make the air inlet hole communicate with the first air inlet channel and make the air outlet hole communicate with the first air outlet channel. When the loading cup is taken out of the installation groove, the valve mechanism closes the air inlet hole and the air outlet hole. The pollination box can maintain the temperature of the stamen in the loading cup in a certain range, so as to ensure the viability of the pollen and improve the pollination success rate and work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of artificial pollination, in particular to a pollination box and a method for using the same in the pollination of Lagerstroemia indica. BACKGROUND

[0002] Lagerstroemia indica is a plant that blooms in summer, and its flowering period mainly concentrates between June and September. The existing pollination method for Lagerstroemia indica generally adopts a method of emasculation and bagging isolation, emasculation in the morning (e.g. 5:00-7:00), and pollination in the morning (9:00-10:00). Since the temperature rises quickly in summer, the temperature after 10:00 in the morning is very likely to exceed 20℃, and if the temperature is too high, it will affect the pollen on the stamens, reduce the viability of the pollen, and thus affect the success rate of pollination. SUMMARY

[0003] In view of the defects in the prior art, the present application aims to provide a pollination box and a method for using the same in the pollination of Lagerstroemia indica, so that the temperature of the removed stamens can be maintained within a certain range at all times, thereby ensuring the viability of the pollen and improving the success rate of pollination and work efficiency.

[0004] To achieve the above-mentioned purpose, the present application provides a pollination box, comprising a box body, a wind supply mechanism and a plurality of heat preservation units, wherein the box body is provided with a first air inlet channel and a first air outlet channel; the heat preservation unit comprises a base, a loading cup and a valve mechanism, the base is provided with a mounting groove, an air inlet hole and an air outlet hole which are respectively communicated with the mounting groove, the air inlet hole is communicated with the first air inlet channel, the air outlet hole is communicated with the first air outlet channel, and the loading cup is detachably mounted in the mounting groove;

[0005] The valve mechanism is used for synchronously blocking or opening the communication state of the air inlet hole and the first air inlet channel, and the air outlet hole and the first air outlet channel; the wind supply mechanism is used for conveying cold air to the first air inlet channel, and for discharging the airflow in the first air outlet channel out of the box body;

[0006] When the loading cup is mounted in the mounting groove, the loading cup covers the slot of the mounting groove and drives the valve mechanism to open the air inlet hole and the air outlet hole; when the loading cup is taken out of the mounting groove, the valve mechanism closes the air inlet hole and the air outlet hole.

[0007] Preferably, the valve mechanism comprises two valve assemblies, the two valve assemblies correspond to the air inlet hole and the air outlet hole respectively, the valve assembly comprises a valve core and at least one elastic switch, the valve core is arranged below the base, and the valve core is used for blocking the air inlet hole or the air outlet hole;

[0008] The elastic switch comprises a linkage column, a connecting part and an elastic piece, the linkage column is in lifting cooperation in the base and close to the mounting groove, the top of the linkage column extends out of the base, the connecting part connects the linkage column and the valve core respectively, and the elastic piece is used for applying upward elastic force to the linkage column.

[0009] The outer side wall of the loading cup is provided with an annular baffle, when the loading cup is installed in the mounting groove, the annular baffle extends out of the notch of the mounting groove and presses downward on the top of the linkage column; the heat preservation unit further comprises a limiting assembly, and the limiting assembly is used for preventing the annular baffle from separating from the top surface of the base.

[0010] Preferably, the limiting assembly comprises a plurality of limiting seats, a clamping opening is formed between the limiting seat and the top surface of the base, the annular baffle extends radially to form a plurality of limiting lugs, the number of the limiting lugs corresponds to the number of the limiting seats, and the limiting lugs can be clamped into the clamping opening.

[0011] Preferably, the inner side wall of the mounting groove is provided with a plurality of centering protrusions, and the centering protrusions are penetrated by through holes.

[0012] Preferably, the air inlet hole and the air outlet hole both penetrate the bottom surface of the base, and the valve core is provided with a conical surface matched with the air inlet hole and the air outlet hole.

[0013] Preferably, the box body is provided with a second air inlet channel communicated with the first air inlet channel, the air supply mechanism comprises a semiconductor refrigeration module, a cold lead block and a first fan, the semiconductor refrigeration module is arranged in the box body, the cold lead block and the first fan are both arranged in the second air inlet channel, the cold lead block is connected with the refrigeration surface of the semiconductor refrigeration module, and the first fan is used for blowing external airflow to the cold lead block and the first air inlet channel.

[0014] Preferably, the first air inlet channel is located between two first air outlet channels; the box body is provided with a second air outlet channel, the second air outlet channel is communicated with the two first air outlet channels respectively, and the air supply mechanism further comprises a radiator and a second fan, the radiator is arranged in the second air outlet channel and located between the two first air outlet channels, the radiator is connected with the heating surface of the semiconductor refrigeration module, and the second fan is used for blowing external airflow to the radiator.

[0015] Preferably, the loading cup is provided with a cup cover, and the annular baffle is provided with an operation block.

[0016] Preferably, the box is internally provided with a first containing groove and a plurality of second containing grooves, the number of the second containing grooves corresponds to the number of the loading cups, and the loading cups can be installed in the second containing grooves.

[0017] The application also provides a use method of the pollination box in the pollination of Lagerstroemia indica, comprising the following steps:

[0018] S1: selecting flower branches, in the sunny evening of late June to early August, selecting flower branches with less flowers and more flower buds, removing the flowers, leaving the flower buds, labeling the flower branches as female parents;

[0019] S2: removing stamens and collecting pollen, in the morning of the next day, selecting the flower branches labeled in the evening of the previous day, removing the stamens and petals with a forceps, leaving the style, placing the removed stamens in the loading cup as male parents, removing the remaining flower buds on the flower branches with scissors, and covering the branches with a side adhesive pollination bag;

[0020] S3: pollination, before 9:00-10:00 of the same day, storing the stamens at room temperature 20℃, opening the pollination bag, and brushing the pollen in the pollination box on the de-stamen style with a brush, if the pollination is not completed before 10:00, installing the loading cup into the installation groove, and opening the air supply mechanism, after the pollination is completed, immediately covering the pollination bag, sealing the bag opening, and opening the pollination bag after 3-5 days, thus completing the pollination.

[0021] The application has the following beneficial effects:

[0022] The application discloses a pollination box and a use method thereof in the pollination of Lagerstroemia indica, the air supply mechanism can cool and heat the loading cup of each heat preservation unit, so that the temperature of the stamens in the loading cup can be maintained within a certain range at all times, thereby ensuring the activity of the pollen and improving the pollination success rate and work efficiency. Since the valve mechanism is opened synchronously with the air inlet hole and the air outlet hole only when the loading cup is installed into the installation groove, the cooling and heating operations of each heat preservation unit are independent and do not interfere with each other, thereby meeting the operation requirements of multiple samples. Meanwhile, the loading cup and the base are designed as a split structure, so that the loading cup can be cleaned after use. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0024] Figure 1 Structure diagram of pollination box provided by an embodiment of the present application;

[0025] Figure 2 Structure diagram of heat preservation unit;

[0026] Figure 3 Structure diagram of base;

[0027] Figure 4 Structure diagram of loading cup;

[0028] Figure 5 Structure diagram of loading cup;

[0029] Figure 6 Structure diagram of elastic switch and valve core;

[0030] Figure 7 Top view of base;

[0031] Figure 8 A-A section in Figure 7 ;

[0032] Figure 9 B-B section in Figure 7 ;

[0033] Figure 10 Top view of heat preservation unit;

[0034] Figure 11 C-C section in Figure 10 ;

[0035] Figure 12 Structure diagram of semiconductor refrigeration module;

[0036] Figure 13 Side view of box body;

[0037] Figure 14 D-D section in Figure 13 ;

[0038] Figure 15 E-E section in Figure 13 ;

[0039] Figure 16 Front view of box body;

[0040] Figure 17 F-F section in Figure 13 ;

[0041] Reference signs:

[0042] 10, box body; 11, first air inlet channel; 12, first air outlet channel; 13, second air inlet channel; 14, second air outlet channel; 15, first containing groove; 16, second containing groove; 20, heat preservation unit; 21, base; 211, mounting groove; 212, air inlet hole; 213, air outlet hole; 214, centering protrusion; 215, through hole; 22, loading cup; 221, annular baffle; 222, limiting lug; 223, cup cover; 224, operation block; 23, valve core; 231, tapered surface; 24, elastic switch; 241, linkage column; 242, connecting part; 243, elastic member; 25, limiting seat; 251, bayonet; 31, semiconductor refrigeration module; 32, cold conducting block; 33, first fan; 34, heat sink; 35, second fan. DETAILED DESCRIPTION

[0043] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0044] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the skilled in the art to which the present application belongs.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. Example

[0049] like Figures 1-17 As shown, in one embodiment of the present invention, a pollination box is provided, including a box body 10, an air supply mechanism, and six heat preservation units 20. The box body 10 is provided with a first air inlet channel 11 and a first air outlet channel 12. The heat preservation unit 20 includes a base 21, a loading cup 22, and a valve mechanism. The base 21 is provided with a mounting groove 211, and an air inlet hole 212 and an air outlet hole 213 respectively communicating with the mounting groove 211. The air inlet hole 212 can communicate with the first air inlet channel 11, and the air outlet hole 213 can communicate with the first air outlet channel 12. The loading cup 22 is detachably installed in the mounting groove 211.

[0050] The valve mechanism is used to simultaneously block or open the connection between the air inlet 212 and the first air inlet channel 11, and the air outlet 213 and the first air outlet channel 12. The air supply mechanism is used to supply cold air to the first air inlet channel 11 and to discharge the airflow in the first air outlet channel 12 out of the housing 10. The air supply mechanism is controlled by a controller (not shown in the attached figure), which can be a PLC, etc., and will not be described in detail here. When the loading cup 22 is installed in the mounting slot 211, the loading cup 22 covers the opening of the mounting slot 211. The loading cup 22 drives the valve mechanism to open the air inlet 212 and the air outlet 213, thereby connecting the air inlet 212 with the first air inlet channel 11 and the air outlet 213 with the first air outlet channel 12. When the loading cup 22 is removed from the mounting slot 211, the valve mechanism closes the air inlet 212 and the air outlet 213.

[0051] When the pollen box is used, the worker places the stamens removed from the Lagerstroemia indica on any loading cup 22, and during the pollination process, the worker uses a brush to dip the pollen on the stamens in the loading cup 22 and applies it to the emasculated pistil. As the temperature rises, if the pollination work is not completed, the worker installs the loading cup 22 in the installation groove 211, at which time the loading cup 22 covers the slot of the installation groove 211 and drives the valve mechanism to open the air inlet hole 212 and the air outlet hole 213. Then, the worker opens the air supply mechanism, which will send cold air into the first air inlet channel 11, and the cold air will enter the installation groove 211 through the air inlet hole 212, thereby cooling and preserving the temperature of the loading cup 22 and the stamens, so that the temperature of the stamens is maintained within a certain range.

[0052] Since the air outlet hole 213 is in communication with the installation groove 211 and the first air outlet channel 12 at this time, part of the cold air in the installation groove 211 will enter the first air outlet channel 12. When the temperature sensor detects that the temperature in the installation groove 211 is too low, the controller will control the air supply mechanism to discharge part of the cold air outside the box body 10, thereby maintaining the temperature of the stamens within a certain range.

[0053] The pollen box disclosed in the embodiment can cool and preserve the temperature of the loading cup 22 of each preservation unit 20, so that the temperature of the stamens in the loading cup 22 can always be maintained within a certain range, thereby ensuring the viability of the pollen and improving the success rate of pollination and work efficiency. Since the valve mechanism is driven to synchronously open the air inlet hole 212 and the air outlet hole 213 only after the loading cup 22 is installed in the installation groove 211, the cooling and preservation operations of each preservation unit 20 are independent and do not interfere with each other, thereby meeting the operation requirements of multiple samples. At the same time, by designing the loading cup 22 and the base 21 as a split structure, the loading cup 22 can be easily cleaned after use.

[0054] Referring to Figures 6-11 In one embodiment, the valve mechanism includes two valve assemblies corresponding to the air inlet hole 212 and the air outlet hole 213, respectively, and each valve assembly includes a valve core 23 and two elastic switches 24. The valve core 23 is arranged below the base 21 and is used to block the air inlet hole 212 or the air outlet hole 213.

[0055] The elastic switch 24 comprises linkage posts 241, connecting parts 242 and elastic members 243. The linkage posts 241 are fitted in the base 21 in a lifting manner and are close to the mounting groove 211. The top of the linkage posts 241 extends out of the base 21. The connecting parts 242 are connected to the linkage posts 241 and the valve core 23 respectively. The elastic members 243 are used to apply upward elastic force to the linkage posts 241. The elastic members 243 are springs. The outer side wall of the loading cup 22 is provided with an annular baffle 221. The heat preservation unit 20 further comprises a limiting assembly. The limiting assembly is used to prevent the annular baffle 221 from being separated from the top surface of the base 21.

[0056] When the loading cup 22 is installed in the mounting groove 211, the annular baffle 221 will press downward on the top of each linkage post 241. The linkage posts 241 will drive the connecting parts 242 and the valve core 23 to descend. In this way, the valve core 23 will open the air inlet hole 212 or the air outlet hole 213. At the same time, the linkage posts 241 will further compress the elastic members 243 in the process of descending. After the annular baffle 221 presses the linkage posts 241, the limiting assembly will limit the annular baffle 221, thereby fixing the loading cup 22 so that it cannot pop out of the mounting groove 211 and can block the slot of the mounting groove 211 so that cold air cannot leak out.

[0057] When the staff takes out the loading cup 22, the elastic members 243 will quickly push the linkage posts 241 to reset under the elastic force of the elastic members 243. In this way, the valve core 23 will be synchronously driven to reseal the air inlet hole 212 or the air outlet hole 213.

[0058] Specifically, the limiting assembly comprises four limiting seats 25. The four limiting seats 25 are arranged in a ring array along the axis of the mounting groove 211. A clamping opening 251 is formed between the limiting seat 25 and the top surface of the base 21. The annular baffle 221 extends along the radial direction of the annular baffle 221 to form four limiting lugs 222. The four limiting lugs 222 are arranged in a ring array along the axis of the loading cup 22. The number of the limiting lugs 222 corresponds to the number of the limiting seats 25. The limiting lugs 222 can be clamped into the clamping opening 251. When it is necessary to install the loading cup 22 into the mounting groove 211, after the annular baffle 221 abuts against the top surface of the base 21, the staff only needs to rotate the loading cup 22. After each limiting lug 222 is clamped into the corresponding clamping opening 251, the loading cup 22 can be fastened on the base 21. Similarly, when the loading cup 22 is taken out, the staff can also rotate the loading cup 22.

[0059] In one embodiment, the inner side wall of the mounting groove 211 is provided with four centering protrusions 214, and the centering protrusions 214 are provided with through holes 215. During the process of installing the loading cup 22 into the mounting groove 211, the staff can make the loading cup 22 always keep coaxial with the mounting groove 211 under the action of the four centering protrusions 214, so that the annular baffle 221 can press against each linkage column 241, thereby better achieving the control of the two valve cores 23.

[0060] In one embodiment, the air inlet hole 212 and the air outlet hole 213 both penetrate the bottom surface of the base 21, and the valve core 23 is provided with a conical surface 231 matched with the air inlet hole 212 and the air outlet hole 213.

[0061] Referring to Figures 12-17 In one embodiment, the box body 10 is provided with a second air inlet channel 13 communicated with the first air inlet channel 11, and the air supply mechanism includes a semiconductor refrigeration module 31, a cold guide block 32 and a first fan 33. The semiconductor refrigeration module 31 is arranged in the box body 10, the cold guide block 32 and the first fan 33 are both arranged in the second air inlet channel 13, the cold guide block 32 is connected with the refrigeration surface of the semiconductor refrigeration module 31, and the first fan 33 is used for blowing external airflow to the cold guide block 32 and the first air inlet channel 11. When the controller starts the semiconductor refrigeration module 31 and the first fan 33, the cold guide block 32 will cool the airflow flowing through it to form cold air. After the cold air enters the first air inlet channel 11, if the air inlet hole 212 of the valve core 23 is opened, the cold air will enter the mounting groove 211, thereby achieving the cooling of the loading cup 22.

[0062] In one embodiment, two first air outlet channels 12 are arranged, and the first air inlet channel 11 is located between the two first air outlet channels 12. The box body 10 is provided with a second air outlet channel 14 communicated with the two first air outlet channels 12 respectively, and the air supply mechanism further includes a radiator 34 and a second fan 35. The radiator 34 is arranged in the second air outlet channel 14 and located between the two first air outlet channels 12, the radiator 34 is connected with the heating surface of the semiconductor refrigeration module 31, and the second fan 35 is used for blowing external airflow to the radiator 34.

[0063] By arranging the first air inlet channel 11 between the two first air outlet channels 12, only one first air inlet channel 11 can deliver cold air to all air inlet holes 212. Since the heating surface of the semiconductor refrigeration module 31 needs to be cooled, after the second fan 35 is started, the airflow will carry away the heat on the radiator 34, thereby keeping the semiconductor refrigeration module 31 in normal working state.

[0064] And, there is a second exhaust channel 14 with two first exhaust channel 12 communication, the second fan 35 blowing air flow will take out the cold air in the first exhaust channel 12, so as to better achieve the cooling of the radiator 34.

[0065] In one embodiment, the loading cup 22 is provided with a cup cover 223, in order to facilitate the rotation of the loading cup 22, the annular baffle 221 is provided with an operating block 224.

[0066] In one embodiment, the box body 10 is provided with a first containing groove 15 and a plurality of second containing grooves 16, the first containing groove 15 can place tweezers, brush and other tools, the number of the second containing grooves 16 corresponds to the number of the loading cup 22, and the loading cup 22 can be installed in the second containing groove 16. Embodiment

[0067] In another embodiment of the present application, a method for using the pollination box in the pollination of Lagerstroemia indica is provided, comprising the following steps:

[0068] S1: selecting flower branches, in the sunny evening of late June to early August, selecting flower branches with less flowers and more flower buds, removing the flowers, leaving the flower buds, labeling the flower branches as female parents.

[0069] S2: removing anthers and collecting pollen, the next morning at 6:00-8:00, selecting the flower branches labeled the previous evening, at this time, most of the flower buds are in the state of opening or the petals are just opened, but the anthers have not yet split, at this time, using a sharp-nosed tweezers to remove the stamens and petals, leaving the style, placing the removed stamens in the loading cup 22 as male parents, using scissors to remove the remaining unopened flower buds on the flower branches, and using a side adhesive pollination bag to cover the branches, which can reduce the damage to the branches.

[0070] S3: pollination, before 9:00-10:00 on the same day, the removed anthers can be stored at room temperature of 20℃, opening the pollination bag, using a brush to dip the pollen in the pollination box and apply it to the de-anthered style, if the pollination is not completed before 10:00, the temperature rises quickly at this time, installing the loading cup 22 into the installation groove 211 and opening the air supply mechanism to maintain the temperature at about 18℃-20℃, ensuring the pollen viability and improving the pollination success rate and work efficiency of Lagerstroemia indica, after the pollination is completed, immediately covering the pollination bag and sealing the bag opening, opening the pollination bag after 3-5 days, and completing the pollination.

[0071] In the specification of the present application, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A pollination box, characterized in that, The application relates to a heat preservation device, which comprises a box body (10), a wind supply mechanism and a plurality of heat preservation units (20), wherein the box body (10) is internally provided with a first air inlet channel (11) and a first air outlet channel (12); the heat preservation unit (20) comprises a base (21), a loading cup (22) and a valve mechanism, the base (21) is internally provided with a mounting groove (211), an air inlet hole (212) and an air outlet hole (213) which are respectively communicated with the mounting groove (211), the air inlet hole (212) can be communicated with the first air inlet channel (11), the air outlet hole (213) can be communicated with the first air outlet channel (12), and the loading cup (22) is detachably mounted in the mounting groove (211); the valve mechanism is used for synchronously blocking or opening the communication state of the air inlet hole (212) and the first air inlet channel (11) and the air outlet hole (213) and the first air outlet channel (12); the wind supply mechanism is used for conveying cold air to the first air inlet channel (11) and discharging the airflow in the first air outlet channel (12) out of the box body (10); when the loading cup (22) is mounted in the mounting groove (211), the loading cup (22) covers the slot of the mounting groove (211) and drives the valve mechanism to open the air inlet hole (212) and the air outlet hole (213); when the loading cup (22) is taken out of the mounting groove (211), the valve mechanism closes the air inlet hole (212) and the air outlet hole (213); the valve mechanism comprises two valve assemblies, the two valve assemblies correspond to the air inlet hole (212) and the air outlet hole (213) respectively, the valve assembly comprises a valve core (23) and at least one elastic switch (24), the valve core (23) is arranged below the base (21), and the valve core (23) is used for blocking the air inlet hole (212) or the air outlet hole (213); the elastic switch (24) comprises a linkage column (241), a connecting part (242) and an elastic piece (243), the linkage column (241) is in lifting cooperation in the base (21) and is close to the mounting groove (211), the top of the linkage column (241) extends out of the base (21), the connecting part (242) is connected with the linkage column (241) and the valve core (23) respectively, and the elastic piece (243) is used for applying upward elastic force to the linkage column (241); the outer side wall of the loading cup (22) is provided with an annular baffle (221), when the loading cup (22) is mounted in the mounting groove (211), the annular baffle (221) extends out of the slot of the mounting groove (211) and downward presses the top of the linkage column (241); the heat preservation unit (20) further comprises a limiting assembly, and the limiting assembly is used for preventing the annular baffle (221) from separating from the top surface of the base (21). ​ ​ ​ ​ ​ ​ ​ ​ The limiting assembly comprises a plurality of limiting seats (25), a clamping opening (251) is formed between the limiting seat (25) and the top surface of the base (21), the annular baffle (221) extends along the radial direction of the annular baffle (221) to form a plurality of limiting lugs (222), the number of the limiting lugs (222) corresponds to the number of the limiting seats (25), and the limiting lugs (222) can be clamped into the clamping openings (251).

2. The pollination box of claim 1, wherein, The inner side wall of the mounting groove (211) is provided with a plurality of centering protrusions (214), and the centering protrusion (214) penetrates a through hole (215).

3. The pollination box of claim 1, wherein, The air inlet hole (212) and the air outlet hole (213) penetrate the bottom surface of the base (21), and the valve core (23) is provided with a conical surface (231) matched with the air inlet hole (212) and the air outlet hole (213).

4. The pollination box of claim 1, wherein, The box body (10) is provided with a second air inlet channel (13) communicated with the first air inlet channel (11), the air supply mechanism comprises a semiconductor refrigeration module (31), a cold conducting block (32) and a first fan (33), the semiconductor refrigeration module (31) is arranged in the box body (10), the cold conducting block (32) and the first fan (33) are arranged in the second air inlet channel (13), the cold conducting block (32) is connected with the refrigeration surface of the semiconductor refrigeration module (31), and the first fan (33) is used for blowing external air flow to the cold conducting block (32) and the first air inlet channel (11).

5. The pollination box of claim 4, wherein, The first air inlet channel (11) is located between the two first air outlet channels (12); The box body (10) is provided with a second air outlet channel (14), the second air outlet channel (14) is communicated with the two first air outlet channels (12) respectively, and the air supply mechanism further comprises a radiator (34) and a second fan (35).

6. The pollination box of claim 1, wherein, The loading cup (22) is provided with a cup cover (223), and the annular baffle (221) is provided with an operation block (224).

7. The pollination box of claim 1, wherein, The box body (10) is provided with a first containing groove (15) and a plurality of second containing grooves (16), the number of the second containing grooves (16) corresponds to the number of the loading cups (22), and the loading cup (22) can be installed in the second containing groove (16).

8. A method of using the pollination box according to any one of claims 1-7 in pollination of Lagerstroemia indica, characterized in that, The method comprises the following steps: S1: selecting flower branches, selecting flower branches with fewer flowers and more flower buds in the evening of sunny days from the end of June to the beginning of August, removing the flowers, leaving the flower buds, labeling the flower branches as female parents, and selecting the flower branches; S2: emasculation and pollen collection, the next morning 6:00-8:00 select the previous evening labeled flower branches, use forceps to remove the stamens and petals, leaving the style, the removed stamens placed in the loading cup (22) for the father to be used, with scissors to reduce the remaining unopened flower buds on the branches, with the side of the adhesive pollination bag to cover the branch; S3: pollination, before 9:00-10:00 on the same day, the stamens can be stored at room temperature 20℃, open the pollination bag, use a brush dipped in the pollen in the loading cup (22) to smear on the emasculation style, if more than 10:00 failed to complete the pollination, install the loading cup (22) to the installation slot (211), and open the air supply mechanism, after the pollination is completed, immediately cover the pollination bag, seal the bag opening, open the pollination bag after 3-5 days, that is, the pollination is completed.

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