Seedling raising device for determining germination rate of rice
By using hard rubber convex strips to support the horizontal state of the pallet and the electric slide rail to prevent the soil and seeds from falling, the problem of reduced seed survival rate and waste caused by the inclination of the seeds is solved, and the seeds and soil are realized Uniform coverage and sufficient contact improve the accuracy of rice germination rate determination.
Patent Information
- Application Number
- CN202411735705.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-01-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the transmission process of the existing rice seedling planter, the inclination of the seedling tray causes uneven accumulation of soil and seeds, reducing seed survival rate, and the seeds are prone to falling and causing waste.
A rice germination rate determination seedling cultivation device was designed. The pallets were maintained in a horizontal state through hard rubber convex strips, and the electric slide rails and elastic parts blocked the drop of soil and seeds. The extrusion blocks achieved accurate positioning of the pallets and soil compaction to ensure the seeds and Fully contact with the soil.
It effectively prevents uneven accumulation of soil and seeds, improves seed survival rate, and reduces seed waste, ensuring the accuracy of germination rate determination.
Smart Images
Figure CN119278710A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of rice planting, in particular to a rice germination rate determination and seedling raising device. Background Art
[0002] The rice germination rate is determined by sowing rice seeds of several control groups, each of which has the same seeds, and then cultivating the different control groups under different environments to determine the rice germination rate, so as to obtain a cultivation environment suitable for seed germination; In order to ensure the rigor of the seed germination rate of the control group, each control group needs to sow more rice seeds. For example, a control group is a ridge or a certain number of seedling trays. The rice seedling tray seeder is an automated mechanical equipment specially used in the rice seedling process. It is mainly used to evenly sow seeds in the seedling tray.
[0003] Since the conveyor belt of the existing swing seeder is in an inclined state, the seedling tray is in an inclined state during the transmission process. When the soil covers the tray, the soil tends to accumulate on one side of the tray due to the vibration during the transmission of the tray, resulting in uneven soil coverage, which leads to a lack of soil at the bottom and upper layers of the seeds, making it impossible for the seeds to obtain sufficient moisture in the soil, etc., thereby reducing the seed survival rate and affecting the accuracy of subsequent rice germination rate measurements. At the same time, when the soil moves toward the lower part of the tilted tray, the soil will move the seeds together, resulting in irregular accumulation of the seeds in the seedling tray along with the soil, causing the seeds in certain areas to compete for nutrients due to dense accumulation, which in turn leads to a lack of necessary nutrients for the seeds, further reducing the survival rate of the seeds.
[0004] Furthermore, in order to facilitate the subsequent staff to operate the plant seedlings in the seedling tray, the edges of some existing seedling trays are relatively wide. When soil and seeds are sown in the seedling tray, the soil and seeds are easily scattered on the edge of the tray. When the tray is subsequently placed on the ground, the seeds fall directly to the ground, causing seed waste. Summary of the invention
[0005] In order to overcome the shortcomings of the existing rice seedling tray seeder that when the seedling tray is transferred, the seeds are irregularly piled up with the soil in the seedling tray, which reduces the survival rate of the seeds, and the soil and seeds are easily scattered on the edge of the tray, resulting in seed waste, the present invention provides a rice germination rate measuring seedling device.
[0006] The technical solution is: a rice germination rate determination seedling raising device, comprising a frame, a lower hopper and a receiving plate; the frame is provided with a lower hopper; the rear part of the lower hopper is provided as a bottom soil layer; the middle part of the lower hopper is provided as a seed layer; the front part of the lower hopper is provided as a covering soil layer; an electric control valve for controlling the lowering of the material is provided at the lower side of the lower hopper; a receiving plate is provided at the front side of the frame; it also includes a transmission component, a conveyor belt, an extension plate and a movable component; the frame is provided with a transmission component; the transmission component is provided with a conveyor belt for transmitting a seedling raising tray; the transmission component is used to drive the conveyor belt to rotate; the conveyor belt is provided with a plurality of supporting parts for keeping the tray in a horizontal state; each supporting part is composed of a plurality of hard rubber convex strips; an extension plate is provided at the front side of the frame; the extension plate is located behind the receiving plate; the frame is provided with a movable component for preventing soil and seeds from falling to the edge of the tray.
[0007] As a further preferred solution, the transmission assembly includes a motor and a rotating shaft; the motor is fixedly connected to the frame; several rotating shafts for carrying the conveyor belt are rotatably connected to the frame, and all the rotating shafts drive the conveyor belt together; the rotating shaft located at the rear is fixedly connected to the output end of the motor.
[0008] As a further preferred scheme, the movable component includes an electric slide rail, a slider, a movable block, an elastic member and a rotating rod; a plurality of electric slide rails are fixedly connected to the frame, and the electric slide rails are arranged in a ring shape; each electric slide rail is slidably connected to a plurality of sliders; each slider is slidably connected to a movable block; each slider is fixedly connected to an elastic member; each elastic member is fixedly connected to the corresponding movable block; each left and right opposite movable blocks are rotatably connected to a rotating rod for blocking soil and seeds on their facing sides; each rotating rod is located above two adjacent support parts.
[0009] As a further preferred solution, each rotating rod is provided with a plurality of blocking parts for preventing mud from overflowing.
[0010] As a further preferred solution, each support portion on the conveyor belt is arranged in an inclined state.
[0011] As a further preferred solution, the position where the rear side of the extension plate contacts the support portion is configured as a convex arc surface.
[0012] As a further preferred embodiment, it also includes an extrusion block 1; an extrusion block 1 is provided at the rear part of the upper side of the frame for making the rotating rod descend to block the seedling tray; the extrusion block 1 is located behind the lower hopper.
[0013] As a further preferred embodiment, it also includes a second extrusion block; a second extrusion block is provided on the front upper side of the frame for lowering the rotating rod to compact the soil on the seedling tray; the second extrusion block is located in front of the lower hopper.
[0014] As a further preferred solution, it also includes a large gear and a small gear; a plurality of large gears are fixedly connected to the rotating shaft located in the front; a plurality of small gears are fixedly connected to each rotating rod, and the small gears are all meshed with the large gear.
[0015] As a further preferred solution, a rotating plate is also included; the front part of the receiving plate is rotatably connected to the rotating plate for stably placing the pallet.
[0016] The present invention has the following advantages: the present invention realizes supporting the tray by the supporting part, so that the tray is transported on the conveyor belt in a horizontal state, preventing soil and seeds from piling up on the lower side of the tilted tray, avoiding uneven accumulation of soil and seeds in the tray, and ensuring the survival rate of the seeds; The scattered soil and seeds are guided to the two adjacent trays in front and back by rotating the rod, which effectively reduces the overlap of soil and seeds on the trays and avoids the problem of seed waste; By using the extrusion block to block and limit the front side of the tray, the rotating rod can be accurately positioned and placed, which prevents the placement gap between the two adjacent trays from deviating, ensures accurate feeding in the tray, and avoids seeds falling from the gap between the two trays, causing waste. The rotating rod is squeezed downward by the squeezing block 2, and the small gear is used to drive the rotating rod to actively rotate, so that the rotating rod rolls compared to the tray, and then the rotating rod rolls and compacts the soil in the tray, thereby promoting full contact between the seeds and the soil, which is beneficial to improving the germination rate of the seeds. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of a first viewing angle stereoscopic structure of the present invention; Figure 2 It is a schematic diagram of a second viewing angle stereoscopic structure of the present invention; Figure 3 It is a schematic diagram of a three-dimensional structure of a combination of a frame, a lower hopper, a conveyor belt, a movable assembly and an extrusion block of the present invention; Figure 4 It is a combined side view of the lower hopper, conveyor belt, movable assembly, extrusion block 1 and extrusion block 2 of the present invention; Figure 5 It is a schematic diagram of the combined three-dimensional structure of the receiving plate, conveyor belt, extension plate, large gear and rotating plate of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the receiving plate, conveyor belt, movable assembly, extrusion block 2, large gear and small gear combination of the present invention; Figure 7 It is a side view of the combination of the receiving plate, the conveyor belt, the second extrusion block and the rotating plate of the present invention.
[0018] The numbers in the figure are as follows: 1-frame, 2-lower hopper, 2001-subsoil layer, 2002-seed layer, 2003-covering layer, 3-receiving plate, 4-conveyor belt, 4001-support part, 5-extension plate, 101-motor, 102-rotating shaft, 201-electric slide rail, 202-slider, 203-movable block, 204-elastic member, 205-rotating rod, 20501-blocking part, 301-extrusion block one, 302-extrusion block two, 401-large gear, 402-small gear, 501-rotating plate. DETAILED DESCRIPTION
[0019] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.
[0020] Example 1 like Figure 1-Figure 6 As shown, a rice germination rate determination and seedling raising device comprises a frame 1, a lower hopper 2 and a receiving plate 3; the frame 1 is provided with the lower hopper 2; the rear part of the lower hopper 2 is provided with a bottom soil layer 2001; the middle part of the lower hopper 2 is provided with a seed layer 2002; the front part of the lower hopper 2 is provided with a covering soil layer 2003; an electric control valve is provided at the lower side of the lower hopper 2; the receiving plate 3 is provided at the front side of the frame 1; It also includes a transmission component, a conveyor belt 4, an extension plate 5 and a movable component; a transmission component is arranged on the frame 1; a conveyor belt 4 is arranged on the transmission component; the transmission component is used to drive the conveyor belt 4 to rotate; a plurality of support parts 4001 are arranged on the conveyor belt 4; each support part 4001 is composed of a plurality of hard rubber convex strips; an extension plate 5 is arranged on the front side of the frame 1; the extension plate 5 is located behind the receiving plate 3; a movable component is arranged on the frame 1.
[0021] The transmission assembly includes a motor 101 and a rotating shaft 102; the motor 101 is fixedly connected to the frame 1; two rotating shafts 102 distributed front and back are rotatably connected to the frame 1, and all the rotating shafts 102 drive the conveyor belt 4 together; the rotating shaft 102 located at the rear is fixedly connected to the output end of the motor 101.
[0022] The movable component includes an electric slide rail 201, a slider 202, a movable block 203, an elastic member 204 and a rotating rod 205; two electric slide rails 201 are fixedly connected to the frame 1 in a left-right symmetrical manner, and the electric slide rails 201 are arranged in a ring shape; each electric slide rail 201 is slidably connected to a plurality of sliders 202; each slider 202 is slidably connected to a movable block 203; each slider 202 is fixedly connected to an elastic member 204, and the elastic member 204 is a spring; each elastic member 204 is fixedly connected to the corresponding movable block 203; each left and right opposite movable blocks 203 are rotatably connected to a rotating rod 205 on the opposite sides; each rotating rod 205 is located above between two adjacent support parts 4001.
[0023] Each rotating rod 205 is provided with two blocking parts 20501 which are symmetrical with respect to each other.
[0024] Furthermore, in order to reduce the degree of deformation of the support portion 4001 when it is squeezed by the receiving plate 3, each support portion 4001 on the conveyor belt 4 is arranged in an inclined state to facilitate the support portion 4001 to be compressed over the receiving plate 3.
[0025] Furthermore, in order to reduce the friction force on the support portion 4001 when it contacts the extension plate 5 , the contact position between the rear side of the extension plate 5 and the support portion 4001 is configured to be a convex arc surface.
[0026] It also includes an extrusion block 301; the extrusion block 301 is arranged at the upper rear part of the frame 1; the extrusion block 301 is located behind the lower hopper 2.
[0027] It also includes a second extrusion block 302 ; the second extrusion block 302 is arranged at the front upper side of the frame 1 ; the second extrusion block 302 is located in front of the lower hopper 2 .
[0028] It also includes a large gear 401 and a small gear 402; two large gears 401 that are symmetrical on the front rotating shaft 102 are fixedly connected; each rotating rod 205 is fixedly connected to two small gears 402 that are symmetrical on the left and right, and the small gears 402 are meshed with the large gear 401.
[0029] The present invention drives the seedling raising tray to be transported in a horizontal state on the conveyor belt 4 through the support part 4001, thereby solving the problem that the soil and seeds in the tray are piled up on the lower side of the tilted tray due to the tray being transported in an inclined state, resulting in uneven accumulation of soil and seeds and reducing the survival rate of seeds. The specific process is as follows: Before using the rice seedling tray seeder to breed rice, the staff first fills the soil into the subsoil layer 2001 and the covering soil layer 2003, and fills the rice seeds into the seed layer 2002. After the filling work is completed, the motor 101 is controlled to drive the rotating shaft 102 to rotate, and then the conveyor belt 4 is driven to rotate. Then the staff places the empty tray on each support part 4001 in turn. When the conveyor belt 4 drives the tray to pass under the subsoil layer 2001, the electric control valve on the lower side of the lower hopper 2 is controlled to open, so that the soil in the subsoil layer 2001 is evenly spread into the tray, and then the conveyor belt 4 drives the tray through the seed layer 2002, so that the rice seeds in the seed layer 2002 are evenly spread on the soil in the tray. The tray loaded with rice seeds passes under the covering soil layer 2003 with the conveyor belt 4, so that the soil in the covering soil layer 2003 is evenly covered on the seeds in the tray, completing the sowing and covering of the rice seeds. During the tray transmission process, the tray is supported by the support part 4001, so that the tray is transmitted on the conveyor belt 4 in a horizontal state, preventing the soil and seeds in the tray from piling up toward the lower side of the tilted tray due to the tray being transmitted in an inclined state, avoiding uneven accumulation of soil and seeds in the tray, and ensuring the survival rate of the seeds.
[0030] When the conveyor belt 4 drives the pallet to continue to move forward onto the extension plate 5, the front end of the pallet is overlapped to the upper rear part of the extension plate 5, and at the same time, the front side of the support part 4001 is squeezed by the rear side of the extension plate 5, so that the support part 4001 is deformed and fits the surface of the conveyor belt 4. In this process, since the support part 4001 is arranged in a backward inclined state, it is convenient for the support part 4001 to be compressed and pass over the extension plate 5. Compared with the situation where the support part 4001 is perpendicular to the surface of the conveyor belt 4, it is beneficial to reduce the degree of deformation of the support part 4001 when it is squeezed by the extension plate 5, and reduce the situation of cracks caused by deformation between the support part 4001 and the conveyor belt 4. The pallet is gradually pushed by the support part 4001. Move to the upper side of the extension plate 5, the tray moved to the upper side of the extension plate 5 continues to slide forward to the receiving plate 3, and then slides from the receiving plate 3 to the ground. At this time, the control frame 1 is moved backward to make the tray completely detach from the receiving plate 3, and the tray placement work is completed. It should be noted that although the tray will tilt when it moves from the conveyor belt 4 to the receiving plate 3 and the extension plate 5, the tray has been detached from the conveyor belt 4 at this time, and is not affected by the vibration of the conveyor belt 4 during transmission. At the same time, the receiving plate 3 and the extension plate 5 are in a static state, which will not cause the tray to vibrate. Even if the tray is tilted, it can still be guaranteed that the seeds and soil in the tray will not be displaced.
[0031] It is also considered that when the tray passes under the lower hopper 2, since the lower hopper 2 adopts a continuous feeding method, soil and seeds are easily scattered on the edge of the tray, resulting in seed waste. The specific solution process is as follows: When the conveyor belt 4 is normally transporting the pallet, the slider 202 drives the rotating rod 205 to move at the same frequency as the conveyor belt 4 on the electric slide rail 201, and the rotating rod 205 is located above the two adjacent support parts 4001. Before the staff places the pallet on the support part 4001, the slider 202 drives the rotating rod 205 to move to contact with the squeezing block 1 301, and the squeezing block 1 301 squeezes the rotating rod 205 downward, and the rotating rod 205 is squeezed and drives the movable block 203 to press the elastic member 204 The staff member shrinks and makes the rotating rod 205 approach the supporting part 4001. When placing the tray, the staff member blocks and limits the front side of the tray through the lowered rotating rod 205, and blocks and limits the rear side of the tray through the rear supporting part 4001. Based on the view from top to bottom, the edges of the two adjacent trays are overlapped, thereby achieving accurate positioning and placement of the tray, preventing deviation in the placement gap between the two adjacent trays, ensuring accurate loading of the tray, and avoiding seeds falling from the gap between the two trays and causing waste.
[0032] When the rotating rod 205 has completed the limited placement of the tray, the slider 202 drives the rotating rod 205 to continue to move forward, so that the rotating rod 205 passes under the extrusion block 301. After the rotating rod 205 passes through the extrusion block 301, the movable block 203 drives the rotating rod 205 to reset under the elastic force of the elastic member 204, so that the rotating rod 205 is located above the overlapping part of the two adjacent trays in front and behind. When the tray passes under the lower hopper 2, the rotating rod 205 guides the scattered soil and seeds to the two adjacent trays in front and behind, effectively reducing the soil and seeds scattered to the overlapping part of the tray, avoiding the problem of seed waste.
[0033] When the sowing and covering of rice seeds are completed, the tray moves with the conveyor belt 4 to contact the extension plate 5. At the same time, the slider 202 drives the rotating rod 205 to move to contact the extrusion block 202, and the extrusion block 202 squeezes the rotating rod 205 downward. While the rotating rod 205 is squeezed, it drives the movable block 203 to compress the elastic member 204, so that the rotating rod 205 approaches the tray after covering with soil, and then the rotating rod 205 contacts the soil in the tray. When the rotating rod 205 approaches the tray, the rotating rod 205 drives the small gear 402 to descend together and engage with the large gear 401, and drives the large gear 401 to rotate together through the rotating shaft 102 located in the front, so that the large gear 401 drives the small gear 402 to rotate, and then the small gear 402 drives the rotating rod 205 to rotate actively, and as the conveyor belt 4 pushes the tray toward the receiving plate 3, the rotating rod 205 rolls and compacts the soil in the tray, thereby promoting full contact between the seeds and the soil, which is beneficial to seed germination.
[0034] When the rotating rod 205 compacts the soil in the tray, the blocking part 20501 is inserted into the soil at the left and right edges of the tray, and the blocking part 20501 blocks the soil squeezed out by the rotating rod 205 to prevent the rotating rod 205 from pushing the soil from the left and right sides of the tray, thereby ensuring the covering effect of the soil in the tray. When the soil compaction work is completed, the slider 202 drives the rotating rod 205 to continue to move forward, so that the rotating rod 205 passes under the extrusion block 2 302, and passes through the gap between the receiving plate 3 and the extension plate 5 and moves back to between the two adjacent support parts 4001. After the rotating rod 205 passes through the extrusion block 2 302, the elastic force of the elastic member 204 causes the movable block 203 to drive the rotating rod 205 to reset.
[0035] Example 2 On the basis of Example 1, Figure 1 , Figure 5 and Figure 7 As shown, a rotating plate 501 is also included; the front part of the receiving plate 3 is rotatably connected to the rotating plate 501 through a torsion spring.
[0036] It is also considered that when the tray slides from the receiving plate 3 to the ground, the tray moves in an inclined state, and the tray slides down at a fast speed, and the soil compacted by the rotating rod 205 in the tray is shaken off, reducing the survival rate of the seeds. The specific solution process is as follows: When the tray slides toward the ground on the receiving plate 3 and the front end of the tray slides onto the rotating plate 501, most of the tray is still on the receiving plate 3. The tray pressure on the rotating plate 501 is not enough to press the rotating plate 501 downward. As the tray continues to slide downward, when the middle part of the tray slides from the receiving plate 3 to the rotating plate 501, the pressure on the rotating plate 501 gradually increases and gradually rotates downward. When the rear end of the tray is detached from the receiving plate 3, the front end of the tray contacts the ground. The rotating plate 501 drives the tray to rotate downward under the action of the gravity of the tray, and at the same time compresses the torsion spring between the rotating plate 501 and the receiving plate 3 to reduce the inclination of the tray, thereby allowing the tray to be placed stably on the ground, preventing the compacted soil in the tray from being shaken off, ensuring sufficient contact between the soil and the seeds, and ensuring the normal survival rate of the seeds. When the tray is placed on the ground, the rotating plate 501 loses the pressure of the tray and rotates upward and resets under the elastic force of the torsion spring, ready to receive the next tray.
[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rice germination rate determination and seedling raising device, comprising a frame (1), a lower hopper (2) and a receiving plate (3); the frame (1) is provided with the lower hopper (2); the rear part of the lower hopper (2) is provided as a bottom soil layer (2001); the middle part of the lower hopper (2) is provided as a seed layer (2002); the front part of the lower hopper (2) is provided as a covering soil layer (2003); an electric control valve for controlling the discharge of materials is provided at the lower side of the lower hopper (2); the receiving plate (3) is provided at the front side of the frame (1); the device is characterized in that: The invention also comprises a transmission component, a conveyor belt (4), an extension plate (5) and a movable component; the frame (1) is provided with a transmission component; the transmission component is provided with a conveyor belt (4) for transmitting a seedling raising tray; the transmission component is used to drive the conveyor belt (4) to rotate; the conveyor belt (4) is provided with a plurality of support parts (4001) for keeping the tray in a horizontal state; each support part (4001) is composed of a plurality of hard rubber convex strips; the front side of the frame (1) is provided with an extension plate (5); the extension plate (5) is located behind the receiving plate (3); and the frame (1) is provided with a movable component for preventing soil and seeds from falling to the edge of the tray.
2. A rice germination rate determination and seedling raising device according to claim 1, characterized in that: The transmission assembly comprises a motor (101) and a rotating shaft (102); the motor (101) is fixedly connected to the frame (1); a plurality of rotating shafts (102) for carrying a conveyor belt (4) are rotatably connected to the frame (1), and all the rotating shafts (102) jointly drive the conveyor belt (4); and the rotating shaft (102) located at the rear is fixedly connected to the output end of the motor (101).
3. A rice germination rate determination and seedling raising device according to claim 2, characterized in that: The movable assembly comprises an electric slide rail (201), a slider (202), a movable block (203), an elastic member (204) and a rotating rod (205); a plurality of electric slide rails (201) are fixedly connected to the frame (1), and the electric slide rails (201) are arranged in a ring shape; each electric slide rail (201) is slidably connected to a plurality of sliders (202); each slider (202) is slidably connected to a movable block (203); each slider (202) is fixedly connected to an elastic member (204); each elastic member (204) is fixedly connected to a corresponding movable block (203); each of the two movable blocks (203) facing each other are rotatably connected to a rotating rod (205) for blocking soil and seeds; each rotating rod (205) is located above two adjacent support parts (4001).
4. A rice germination rate determination and seedling raising device according to claim 3, characterized in that: Each rotating rod (205) is provided with a plurality of blocking parts (20501) for blocking mud from overflowing.
5. A rice germination rate determination and seedling raising device according to claim 1, characterized in that: Each support portion (4001) on the conveyor belt (4) is arranged in an inclined state.
6. A rice germination rate determination and seedling raising device according to claim 5, characterized in that: The position where the rear side of the extension plate (5) contacts the support portion (4001) is arranged to be a convex arc surface.
7. A rice germination rate determination and seedling raising device according to claim 4, characterized in that: It also includes a squeezing block (301); a squeezing block (301) is provided at the rear upper part of the frame (1) for causing the rotating rod (205) to descend to block the seedling raising tray; the squeezing block (301) is located behind the lower hopper (2).
8. A rice germination rate determination and seedling raising device according to claim 7, characterized in that: It also includes a second squeezing block (302); the front portion of the upper side of the frame (1) is provided with a second squeezing block (302) for causing the rotating rod (205) to descend to compact the soil on the seedling raising tray; the second squeezing block (302) is located in front of the lower hopper (2).
9. A rice germination rate determination and seedling raising device according to claim 8, characterized in that: It also includes a large gear (401) and a small gear (402); a plurality of large gears (401) are fixedly connected to the rotating shaft (102) located in the front; a plurality of small gears (402) are fixedly connected to each rotating rod (205), and the small gears (402) are meshed with the large gear (401).
10. A rice germination rate determination and seedling raising device according to claim 1, characterized in that: It also includes a rotating plate (501); the front part of the receiving plate (3) is rotatably connected to the rotating plate (501) for stably placing the tray.