Saline-alkaline tolerance screening equipment for wheat

Abstract

The invention relates to the technical field of seedling raising equipment, and particularly discloses wheat saline-alkaline tolerance screening equipment which comprises a seedling raising plate and a shell with a cavity formed in the top side, an openable cover plate for covering the cavity is installed on the top side of the shell, and the seedling raising plate is installed in the cavity of the shell. A seedling raising plate is arranged in the cavity, the seedling raising plate divides the cavity into an upper containing cavity and a lower containing cavity, a plurality of open holes are formed in the seedling raising plate, each open hole extends downwards to form a seedling raising pipe, the bottom end of each seedling raising pipe is closed, a plurality of water inlet holes are formed in the bottom end of each seedling raising pipe, and the outer diameter of each seedling raising pipe is gradually decreased in the direction from top to bottom; according to the wheat saline-alkaline tolerance screening equipment, saline-alkaline water does not make contact with wheat seedling leaves, it is avoided that the wheat seedling leaves become yellow and wither due to the saline-alkaline water, and the accuracy of wheat saline-alkaline tolerance screening results is improved.

Description

Technical Field

[0001] The invention relates to the technical field of seedling raising equipment, in particular to a salt-alkali tolerance screening device for wheat. Background Art

[0002] Screening for salt-alkali tolerance of wheat can screen out varieties with higher salt-alkali tolerance and strong growth adaptability. These salt-alkali tolerant wheat varieties can grow on saline-alkali land, which can reduce the impact of saline-alkali land on wheat growth and improve the yield and quality of wheat on saline-alkali land.

[0003] During the salt-alkali tolerance screening process of wheat, the wheat seedlings are treated with a simulated saline-alkali environment, and then the salt-alkali tolerant varieties are screened by observing their growth conditions and physiological indicators (such as chlorophyll content, root activity, etc.). The simulated saline-alkali environment is achieved by pouring saline-alkali water into the planting soil. However, the saline-alkali water is easy to adhere to the leaves of the wheat seedlings during the process of pouring saline-alkali water into the planting soil. The saline-alkali water adhered to the wheat seedlings will cause the leaves of the wheat seedlings to turn yellow and wither, affecting the results of the salt-alkali tolerance screening of wheat. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a wheat salt-alkali tolerance screening device, in which saline-alkali water does not contact the leaves of the wheat seedlings, thereby preventing the saline-alkali water from causing the leaves of the wheat seedlings to turn yellow and wither, thereby improving the accuracy of the wheat salt-alkali tolerance screening results.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wheat salt-alkali tolerance screening device, comprising a seedling raising plate and a shell with a chamber on the top side, the top side of the shell is equipped with a cover plate that covers the chamber and can be opened and closed, the seedling raising plate is installed in the chamber of the shell, and the seedling raising plate divides the chamber into an upper accommodating chamber and a lower accommodating chamber, the seedling raising plate is provided with a plurality of openings, each opening has a seedling raising tube extending downward, the bottom end of each seedling raising tube is closed, and a plurality of water inlet holes are provided at the bottom end of the seedling raising tube, the outer diameter of each seedling raising tube gradually decreases from top to bottom, and each seedling raising tube is sleeved with a fixed tube, and the middle part of the outer side of the seedling raising tube is fixedly connected to the top end of the fixed tube.

[0006] A sealed sliding sleeve is installed on the outside of each fixed tube, and a fixed plate is provided in the lower accommodating cavity. A through hole is opened on the fixed plate corresponding to the position of each fixed tube. The outside of the fixed tube is fixedly connected to the through hole, and the top side of the fixed plate is fixedly connected to the bottom end of the guide rod. The top end of the guide rod passes through the seedling raising plate and extends to the top of the seedling raising plate.

[0007] An exhaust hole connected to the upper accommodating chamber is provided on the cover plate or the shell, and the exhaust hole is connected to the air inlet of the negative pressure pump.

[0008] Among them, the lower accommodating chamber is filled with saline-alkali water of a set concentration, and the saline-alkali water level is lower than the bottom end of the seedling tube. The guide rod drives the sleeve to move up and down through the fixed plate, and the movement range of the bottom end of the sleeve is above the saline-alkali water level to below the saline-alkali water level.

[0009] As a preferred technical solution of the present invention, a through hole communicating with the lower accommodating chamber is provided on the shell, and the outer side of the through hole is communicated with one end of the switch valve.

[0010] As a preferred technical solution of the present invention, it also includes a plurality of cover shells with openings at the bottom ends, and a cover shell positioning assembly is fixed at a position corresponding to each opening on the top side of the seedling raising plate, and the cover shell and the cover shell positioning assembly are detachably connected.

[0011] As a preferred technical solution of the present invention, the cover casing positioning assembly is three fixing rods arranged at equal angles around the opening, an annular protrusion is provided inwardly at the bottom end of the cover casing, and each fixing rod is provided with a slot adapted to the annular protrusion.

[0012] As a preferred technical solution of the present invention, the diameter of the opening is 2.0 cm-5.0 cm.

[0013] As a preferred technical solution of the present invention, the cover plate is made of transparent glass or transparent plastic.

[0014] As a preferred technical solution of the present invention, an annular fixing protrusion is fixed to the inner wall of the chamber, and the top side of the fixing protrusion is in contact with the edge of the bottom side of the seedling raising plate.

[0015] As a preferred technical solution of the present invention, a rubber pad is fixed to the top side of the fixing protrusion.

[0016] As a preferred technical solution of the present invention, an annular elastic sheet is provided between the sleeve and the fixed tube, the outer side of the annular elastic sheet is fixedly connected to the inner wall of the sleeve, and the inner wall of the annular elastic sheet is slidingly and sealingly connected to the outer side of the fixed tube.

[0017] As a preferred technical solution of the present invention, the bottom end of the seedling tube is higher than the bottom end of the fixed tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. In the salt-alkali tolerance screening equipment for wheat of the present invention, the guide rod drives the sleeve to move downward through the fixed plate, and the bottom end of the sleeve moves below the liquid level of the saline-alkali water, and the negative pressure pump works to make the air pressure in the upper accommodating chamber reach a set value: on the one hand, the air pressure above the seedling tube is less than the air pressure below the seedling tube, and the saline-alkali water in the lower accommodating chamber enters into the planting soil, reducing the water resources required for the salt-alkali tolerance screening of wheat; on the other hand, during the process of the planting soil absorbing the saline-alkali water, the air pressure in the upper accommodating chamber is controlled so that the saline-alkali water in the seedling tube does not contact the leaves of the wheat seedlings, thereby preventing the saline-alkali water from causing the leaves of the wheat seedlings to turn yellow and wither; on the other hand, after the planting soil absorbs the saline-alkali water, the cover plate is opened, the air pressure below the seedling tube is less than the air pressure above the seedling tube, the planting soil in the seedling tube is subjected to a downward extrusion force, and a part of the saline-alkali water in the planting soil is squeezed out, which is convenient for controlling the water content of the planting soil and reducing the risk of root rot of the wheat seedlings.

[0019] 2. In the salt-alkali tolerance screening equipment for wheat of the example of the present invention, when the leaves of the wheat seedlings in one of the seedling tubes turn yellow, the wheat seedlings are covered in a cover. During the process of applying saline-alkali water to the wheat seedlings, the cover prevents saline-alkali water from flowing into the seedling tube where the wheat seedlings with yellow leaves are located, thereby facilitating the rescue of the wheat seedlings with yellow leaves.

[0020] 3. In the salt-alkali tolerance screening equipment for wheat of the example of the present invention, when the saline-alkali water in the lower accommodating chamber enters into the planting soil under the action of the air pressure difference between the upper and lower air pressures of the seedling tube, the operator quickly opens the switch valve, and the planting soil in the seedling tube is impacted upward, causing the planting soil in the seedling tube to move upward, thereby reducing the adhesion between the planting soil and the inner wall of the seedling tube, making it convenient for the operator to remove the wheat seedlings in the seedling tube together with the planting soil when transplanting.

[0021] 4. In the salt-alkali tolerance screening equipment for wheat of the present invention, the bottom end of the seedling tube is higher than the bottom end of the fixed tube. When the seedling plate is taken out of the shell and placed on a placement plane, the fixed tube prevents the bottom end of the seedling tube from contacting the placement plane, thereby preventing the wheat roots extending out of the water inlet from being compressed and damaged, thereby ensuring the integrity of the wheat root system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of one viewing angle of the present invention; Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure; Figure 3 for Figure 2 A schematic diagram of the structure at A; Figure 4 for Figure 2 A schematic diagram of the structure at B; Figure 5 It is a schematic diagram of the explosion structure of the present invention; Figure 6 for Figure 5 A schematic diagram of a one-view structure; Figure 7 It is a schematic diagram of the top view of the structure of the seedling raising plate of the present invention.

[0023] In the figure: 1 cover plate, 2 negative pressure pump, 3 switch valve, 4 shell, 5 cover shell, 6 seedling plate, 7 seedling tube, 8 fixed tube, 9 fixed plate, 10 sleeve, 11 annular elastic sheet, 12 fixed protrusion, 13 fixed rod, 14 guide rod. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1: See also Figure 1-Figure 7 The present embodiment discloses a wheat salt-alkali tolerance screening device, comprising a seedling raising plate 6 and a shell 4 with a chamber on the top side, a cover plate 1 covering the chamber and being openable and closable is installed on the top side of the shell 4, the cover plate 1 is buckled on the top side of the shell 4 or the cover plate 1 is installed on the top side of the shell 4 through a hinge, the seedling raising plate 6 is installed in the chamber of the shell 4, and the seedling raising plate 6 divides the chamber into an upper accommodating chamber and a lower accommodating chamber, a plurality of openings are opened on the seedling raising plate 6, each opening has a seedling raising tube 7 extending downward, the bottom end of each seedling raising tube 7 is closed, and a plurality of water inlet holes are opened at the bottom end of the seedling raising tube 7, the outer diameter of each seedling raising tube 7 gradually decreases from top to bottom, and a fixed tube 8 is sleeved on each seedling raising tube 7, and the middle part of the outer side of the seedling raising tube 7 is fixedly connected to the top end of the fixed tube 8.

[0026] A sealed sliding sleeve 10 is installed on the outer side of each fixed tube 8, and a fixed plate 9 is provided in the lower accommodating cavity. The fixed plate 9 has a through hole corresponding to the position of each fixed tube 8. The outer side of the fixed tube 8 is fixedly connected to the through hole, and the top side of the fixed plate 9 is fixedly connected to the bottom end of the guide rod 14. The top end of the guide rod 14 passes through the seedling raising plate 6 and extends to the top of the seedling raising plate 6.

[0027] An exhaust hole connected to the upper accommodating chamber is provided on the cover plate 1 or the shell 4 , and the exhaust hole is connected to an air inlet of the negative pressure pump 2 .

[0028] Furthermore, the diameter of the opening is 2.0 cm-5.0 cm.

[0029] Furthermore, the friction between the fixed tube 8 and the sleeve 10 makes the position of the sleeve 10 on the fixed tube 8 adjustable, or the friction between the guide rod 14 and the seedling raising plate 6 makes the position of the sleeve 10 on the fixed tube 8 adjustable.

[0030] The negative pressure pump 2 is electrically connected to an external control switch, and the external control switch controls the operation of the negative pressure pump 2. The negative pressure pump 2 used in the present invention is a common electronic component in the prior art, and its working mode and circuit structure are well-known technologies and will not be described in detail here.

[0031] The working process and principle of this embodiment are: The operator fills each seedling tube 7 with planting soil of the same depth, and wheat seedlings are planted in the planting soil. The operator fills the downward accommodating cavity with saline water of a set concentration, and the saline water level is lower than the bottom end of the seedling tube 7. The operator drives the guide rod 14 and the fixing plate 9 to move the sleeve 10 downward, and the bottom end of the sleeve 10 moves below the saline water level. The distance between the bottom end of the sleeve 10 and the bottom side of the inner cavity of the shell 4 is 3.0mm-20.0mm, and then the operator makes the cover plate 1 completely cover the chamber of the shell 4.

[0032] The operator starts the negative pressure pump 2, and the negative pressure pump 2 draws air from the upper accommodating chamber so that the air pressure in the upper accommodating chamber reaches a set value. The air pressure above the seedling tube 7 is less than the air pressure below the seedling tube 7. Under the action of the air pressure difference, the saline-alkali water in the lower accommodating chamber enters into the planting soil through the sleeve 10 and the water inlet hole at the bottom end of the seedling tube 7, thereby changing the salinity of the planting soil in the seedling tube 7. At this time, the air pressure below the seedling tube 7 is less than the air pressure outside the shell 4. Then the operator stops the negative pressure pump 2, and the operator opens the cover 1. The air pressure below the seedling tube 7 is less than the air pressure above the seedling tube 7. The planting soil in the seedling tube 7 is subjected to a downward extrusion force, and a part of the saline-alkali water in the planting soil is squeezed out, which is convenient for controlling the water content of the planting soil and reducing the risk of root rot of the wheat seedlings.

[0033] The operator drives the guide rod 14 and the fixing plate 9 to move the sleeve 10 upward, and the bottom end of the sleeve 10 moves above the liquid level of the saline-alkali water. The saline-alkali water in the sleeve 10 leaves the inner cavity of the sleeve 10, and the saline-alkali water in the sleeve 10 leaves the bottom end of the seedling tube 7. The saline-alkali water in the shell 4 flows easily, and the concentration of the saline-alkali water in each part of the shell 4 is consistent.

[0034] Furthermore, the operator can adjust the air pressure in the upper accommodating chamber by controlling the working time of the negative pressure pump 2 and the power of the negative pressure pump 2 .

[0035] Furthermore, the cover 1 is made of transparent glass or transparent plastic. The operator observes the top side of the planting soil in the seedling tube 7 through the cover 1. When saline-alkali water appears on the top side of the planting soil, the operator stops the negative pressure pump 2. The operator controls the air pressure in the upper accommodating chamber to prevent the saline-alkali water in the seedling tube 7 from contacting the leaves of the wheat seedlings, thereby preventing the saline-alkali water from causing the leaves of the wheat seedlings to turn yellow and wither.

[0036] Embodiment 2: like Figure 1 , Figure 2 As shown, this embodiment discloses a wheat salt-alkali tolerance screening device, and its structure is roughly the same as that of the first embodiment, except that a through hole connected to the lower accommodating chamber is opened on the shell 4 of this embodiment, and the outer side of the through hole is connected to one end of the switch valve 3.

[0037] Preferably, the switch valve 3 is a quick exhaust valve or a ball valve commonly used in the prior art.

[0038] The working process and principle of this embodiment are: Under the action of the air pressure difference between the upper and lower parts of the seedling tube 7, the saline water in the lower accommodating chamber enters into the planting soil through the sleeve 10 and the water inlet hole at the bottom end of the seedling tube 7. The air pressure below the seedling tube 7 is lower than the air pressure outside the shell 4. The operator quickly opens the switch valve 3, and the air outside the shell 4 quickly enters into the lower accommodating chamber through the switch valve 3. The air pressure in the lower accommodating chamber increases rapidly, and the planting soil in the seedling tube 7 is impacted upward, causing the planting soil in the seedling tube 7 to move upward, reducing the adhesion of the planting soil and the inner wall of the seedling tube 7, making it convenient for the operator to remove the wheat seedlings in the seedling tube 7 together with the planting soil when transplanting.

[0039] Embodiment three: like Figure 3 , Figure 4 As shown, this embodiment discloses a wheat salt-alkali tolerance screening device, and its structure is substantially the same as that of the second embodiment, except that this embodiment further includes a plurality of cover shells 5 with openings at the bottom ends, and a cover shell positioning assembly is fixed at the position corresponding to each opening on the top side of the seedling raising plate 6, and the cover shell 5 and the cover shell positioning assembly are detachably connected.

[0040] The working process and principle of this embodiment are: When the leaves of the wheat seedlings in one of the seedling tubes 7 turn yellow, the operator covers the wheat seedlings in a cover shell 5, and the bottom end of the cover shell 5 and the top side of the seedling plate 6 are sealed and fitted through a cover shell positioning assembly. During the process of applying saline-alkali water to the wheat seedlings, the cover shell 5 prevents saline-alkali water from flowing into the seedling tube 7 where the wheat seedlings with yellow leaves are located, making it convenient for the operator to rescue the wheat seedlings with yellow leaves.

[0041] Furthermore, the operator removes the cover 5 at the location of the wheat seedlings with yellow leaves, and adds clean water into the seedling tube 7 where the wheat seedlings with yellow leaves are located, so as to facilitate the recovery of the growth state of the wheat seedlings with yellow leaves.

[0042] Furthermore, the cover shell 5 is made of elastic plastic material.

[0043] Embodiment 4: like Figure 3 , Figure 4 As shown, this embodiment discloses a wheat salt-alkali tolerance screening device, and its structure is roughly the same as that of the second or third embodiment, except that the cover casing positioning assembly of this embodiment is three fixing rods 13 arranged at equal angles around the opening, and an annular protrusion is provided inwardly at the bottom end of the cover casing 5, and each fixing rod 13 is provided with a slot adapted to the annular protrusion, and the fixing rod 13 makes it convenient to fix or disassemble the cover casing 5 on the seedling plate 6.

[0044] Furthermore, an elastic ring is fixed to the bottom end of the cover shell 5 , and the elastic ring further enhances the sealing between the cover shell 5 and the seedling raising plate 6 .

[0045] Embodiment five: like Figure 3 , Figure 5 As shown, this embodiment discloses a wheat salt-alkali tolerance screening device, and its structure is roughly the same as that of the first embodiment, except that an annular fixing protrusion 12 is fixed to the inner wall of the chamber of this embodiment, and the top side of the fixing protrusion 12 contacts the edge of the bottom side of the seedling plate 6, so that the seedling plate 6 is conveniently fixed in the chamber.

[0046] Embodiment six: like Figure 3 As shown, this embodiment discloses a wheat salt-alkali tolerance screening device, and its structure is roughly the same as that of the fifth embodiment, except that an annular rubber pad is fixed to the top side of the fixed protrusion 12 of this embodiment, and the rubber pad enhances the sealing between the top side of the fixed protrusion 12 and the edge of the bottom side of the seedling plate 6.

[0047] Embodiment seven: like Figure 3 As shown, this embodiment discloses a wheat salt-alkali tolerance screening device, and its structure is roughly the same as that of the first embodiment, except that, in this embodiment, an annular elastic sheet 11 is provided between the sleeve 10 and the fixed tube 8, the outer side of the annular elastic sheet 11 is fixedly connected to the inner wall of the sleeve 10, and the inner wall of the annular elastic sheet 11 is slidingly and sealingly connected to the outer side of the fixed tube 8. The annular elastic sheet 11 enhances the sealing between the sleeve 10 and the fixed tube 8 to prevent the air outside the sleeve 10 from moving downward through the gap between the sleeve 10 and the fixed tube 8.

[0048] Embodiment eight: like Figure 2 , Figure 3 As shown, this embodiment discloses a wheat salt-alkali tolerance screening device, and its structure is roughly the same as that of the first embodiment, except that the bottom end of the seedling tube 7 of this embodiment is higher than the bottom end of the fixed tube 8. When the seedling plate 6 is taken out of the shell 4 and placed on a placement plane, the fixed tube 8 prevents the bottom end of the seedling tube 7 from contacting the placement plane, thereby avoiding compression and damage to the wheat roots extending out of the water inlet hole, thereby ensuring the integrity of the wheat root system.

[0049] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A wheat salt-alkali tolerance screening device, characterized in that: It comprises a seedling raising plate (6) and a shell (4) with a chamber on the top side, the top side of the shell (4) is provided with a cover plate (1) that covers the chamber and can be opened and closed, the seedling raising plate (6) is installed in the chamber of the shell (4), and the seedling raising plate (6) divides the chamber into an upper accommodating chamber and a lower accommodating chamber, the seedling raising plate (6) is provided with a plurality of openings, each opening has a seedling raising tube (7) extending downward, the bottom end of each seedling raising tube (7) is closed, and the bottom end of the seedling raising tube (7) is provided with a plurality of water inlet holes, the outer diameter of each seedling raising tube (7) gradually decreases in a direction from top to bottom, each seedling raising tube (7) is sleeved with a fixing tube (8), and the middle part of the outer side of the seedling raising tube (7) is fixedly connected to the top end of the fixing tube (8); A sealing sliding sleeve (10) is installed on the outer side of each fixed tube (8), a fixed plate (9) is provided in the lower accommodating chamber, a through hole is opened on the fixed plate (9) at a position corresponding to each fixed tube (8), the outer side of the fixed tube (8) and the through hole are fixedly connected, the top side of the fixed plate (9) and the bottom end of the guide rod (14) are fixedly connected, and the top end of the guide rod (14) passes through the seedling raising plate (6) and extends to the top of the seedling raising plate (6); An exhaust hole communicating with the upper accommodating chamber is provided on the cover plate (1) or the shell (4), and the exhaust hole is communicated with an air inlet of the negative pressure pump (2); The lower accommodating chamber is filled with saline-alkali water of a set concentration, and the saline-alkali water level is lower than the bottom end of the seedling tube (7). The guide rod (14) drives the sleeve (10) to move up and down through the fixing plate (9), and the movement range of the bottom end of the sleeve (10) is from above the saline-alkali water level to below the saline-alkali water level.

2. The wheat salt-alkali tolerance screening equipment according to claim 1, characterized in that: The shell (4) is provided with a through hole connected to the lower accommodating chamber, and the outside of the through hole is connected to one end of the switch valve (3).

3. The wheat salt-alkali tolerance screening equipment according to claim 2, characterized in that: It also comprises a plurality of cover shells (5) with openings at the bottom ends, a cover shell positioning assembly is fixed at a position corresponding to each opening on the top side of the seedling raising plate (6), and the cover shell (5) and the cover shell positioning assembly are detachably connected.

4. The wheat salt-alkali tolerance screening equipment according to claim 2, characterized in that: The housing positioning assembly comprises three fixing rods (13) arranged at equal angles around the opening, an annular protrusion is provided inwardly at the bottom end of the housing (5), and each fixing rod (13) is provided with a slot adapted to the annular protrusion.

5. The wheat salt-alkali tolerance screening equipment according to claim 1, characterized in that: The diameter of the opening is 2.0 cm-5.0 cm.

6. The wheat salt-alkali tolerance screening equipment according to claim 1, characterized in that: The cover plate (1) is made of transparent glass or transparent plastic.

7. The wheat salt-alkali tolerance screening equipment according to claim 1, characterized in that: An annular fixing protrusion (12) is fixed to the inner wall of the chamber, and the top side of the fixing protrusion (12) is in contact with the edge of the bottom side of the seedling raising plate (6).

8. The wheat salt-alkali tolerance screening equipment according to claim 7, characterized in that: A rubber pad is fixed to the top side of the fixing protrusion (12).

9. The wheat salt-alkali tolerance screening equipment according to claim 1, characterized in that: An annular elastic sheet (11) is provided between the sleeve (10) and the fixed tube (8); the outer side of the annular elastic sheet (11) is fixedly connected to the inner wall of the sleeve (10); and the inner wall of the annular elastic sheet (11) is slidably and sealingly connected to the outer side of the fixed tube (8).

10. The wheat salt-alkali tolerance screening equipment according to claim 1, characterized in that: The bottom end of the seedling raising tube (7) is higher than the bottom end of the fixing tube (8).

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