Sowing device and sowing method for identifying disease resistance of rice varieties in seedling stage

Abstract

The invention relates to a seeding device and a seeding method for identifying disease resistance of rice varieties in a seedling stage, and relates to the technical field of seeding devices. The three seedling raising trays are fixed to the long-strip plate, the seeding box is arranged on the long-strip plate, the rice box and the recycling box are arranged above the seeding box, the three communicating pipes are connected to the rice box, and the three seedling raising trays comprise the first seedling raising tray, the second seedling raising tray and the third seedling raising tray. Three rice cavities are formed in the inner side of the rice box, and a translation part for performing translation driving on the seeding box is arranged on the strip plate; a switching assembly for switching and opening the three communicating pipes is arranged on the seeding box, and the three communicating pipes are communicated with the three rice cavities respectively. The purpose of switching sowing of multiple rice seeds is achieved, the multiple rice seeds can be sown in sequence, meanwhile, different rice seeds can be prevented from being mixed together, and the sowing efficiency of the sowing device on the multiple rice seeds is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of sowing devices, and in particular to a sowing device and a sowing method for identifying disease resistance of rice varieties at the seedling stage. Background Art

[0002] Rice is an annual aquatic plant of the Poaceae family. Its culms are upright and vary with the variety. Its leaf sheaths are glabrous and loose, its ligules are lanceolate, and its leaves are linear-lanceolate and rough. Food security is related to my country's social stability and economic development. Identification of rice crop disease resistance is the only way to obtain disease-resistant crop varieties.

[0003] The breeding of disease-resistant rice varieties usually requires planting experiments of multiple varieties of rice, so it is necessary to evenly spread the rice seeds of multiple varieties in the test field. When identifying the disease resistance of rice, different rice varieties need to be sown in the resistance identification garden. In this process, seeds of different varieties must not be confused. Once confused, the identification result will be inaccurate. For example, a Chinese patent with a publication number of CN215188228U in the related art proposes a sowing device for identifying the disease resistance of rice varieties in the seedling stage. The device has the function of putting rice seeds of one variety into a sowing bin, filling each sowing tube, and the seeds will be scattered through several sowing tubes. As the seedling tray moves, the seeds will be evenly scattered on the seedling tray. After sowing, the sowing bin can be tilted to pour out the remaining seeds, and another variety or multiple varieties can be replaced according to the experimental needs. Through the uniform distribution of several sowing tubes, the seeds can be quickly and evenly spread on the seedling tray in coordination with the movement of the tray.

[0004] With respect to the above-mentioned related technologies, the inventors believe that there are the following defects: in order to avoid mixing multiple rice seeds during sowing, the current rice seed sowing device usually can only sow one type of rice seed at a time. When it is necessary to switch sowing, it is necessary to first pour out the rice seeds that have not been sown in the sowing device, and then pour in other varieties of rice seeds for sowing. Although this method can avoid the confusion of different varieties of rice seeds during sowing, the sowing method is time-consuming and labor-intensive, and different varieties of rice seeds need to be constantly replaced in the sowing device, which affects the efficiency of the sowing device for sowing multiple rice seeds. It is inconvenient to use and cannot meet the actual sowing needs. Summary of the invention

[0005] In order to avoid mixing of multiple rice seeds during sowing, a sowing device usually can only sow one type of rice seed at a time. When switching sowing, the unsown rice seeds in the sowing device need to be poured out first, and then other varieties of rice seeds need to be poured in for sowing. The present application provides a sowing device and a sowing method for identifying the disease resistance of rice varieties in the seedling stage.

[0006] The present application provides a sowing device and sowing method for identifying the disease resistance of rice varieties at the seedling stage, which adopts the following technical solutions: A sowing device for identifying the disease resistance of rice varieties at the seedling stage, comprising a long strip, three seedling trays fixed on the long strip, a sowing box arranged on the long strip, a rice box and a recovery box arranged above the sowing box, and three connecting pipes connected to the rice box, the three seedling trays are respectively a first sowing tray, a second sowing tray and a third sowing tray, three rice cavities are arranged on the inner side of the rice box, and a translation member for driving the sowing box to translate is arranged on the long strip; The sowing box is provided with a switching assembly for switching and opening three connecting pipes, and the three connecting pipes are respectively connected with the three rice chambers; The sowing box is provided with a processing mechanism for shaking, quantifying, recovering and sowing rice seeds, and the processing mechanism includes a shaking component, a quantifying component, a recovering component and a sowing component; The switching assembly includes opening plates movably arranged on the three connecting pipes respectively and a sliding member for slidingly driving the three opening plates; The shaking assembly includes a shaking plate movably arranged inside the seed box and a shaking member for shaking and driving the shaking plate; The quantitative assembly includes four partition plates rotatably arranged in the seeding box and a limiting member for limiting the rotation of the four partition plates; The recovery assembly includes a feed box and a recovery pipe fixed to the seed box, a spiral blade rotatably arranged in the feed box, and a rotating member for driving the spiral blade to rotate; The sowing assembly includes a sowing tube fixed on the sowing box, a plurality of sowing branch tubes fixed on the sowing tube, sowing plates movably arranged on the plurality of sowing tubes, a driving member for driving the plurality of sowing plates to translate, and a switching member for switching the recovery tube and the sowing tube, wherein the switching member is driven by a sliding member; The rotating member includes a movable gear disposed on the spiral blade and a lifting member for lifting and lowering the movable gear; The recovery box is provided with connecting pipes respectively connected with the three rice chambers and material baffles respectively and movably arranged on the three connecting pipes, and the three material baffles are driven for translation by sliding members.

[0007] By adopting the above technical scheme, the sowing box and the rice box can be translated on the three seedling trays in turn through the translation member, so as to realize sowing different varieties of rice seeds on the three seedling trays respectively, and the rice seeds can be shaken by the shaking component to crush the rice seeds, so as to avoid the rice seeds piling up together and causing imbalance in subsequent sowing, and the rice seeds can be quantitatively sown by the quantitative component, so as to sow a specified number of rice seeds each time, and the rice seeds in the rice box can be transferred to the specified rice cavity by the recycling component when switching the rice seeds for delivery, so as to avoid the rice seeds of different varieties being mixed together when switching the rice seeds for delivery; Disease resistance testing is often carried out in experimental fields, which are divided into different areas to cultivate different plants. Since different plants have different requirements for different types of elements, the trace elements remaining in different areas of the experimental fields are also inconsistent. When conducting conventional disease resistance testing, the experimental fields are often divided into multiple areas that do not interfere with each other. In order to avoid interference caused by hybridization of varieties, a certain variety of plants is fixedly cultivated in one area. Although this method can effectively avoid confusion between rice seeds of different varieties, it is not easy to reflect the impact of different soils on the disease resistance of varieties when conducting disease resistance testing and cultivation, which affects the results of disease resistance testing. Therefore, it needs to be improved; The three seedling trays can be limited by the long strips, and three different rice seeds can be planted and sown by the three seedling trays. Three rice cavities are set in the rice box to store three different varieties of rice seeds. The rice seeds in the three rice cavities can be put into the sowing box respectively through the three connecting pipes. The three connecting pipes can be switched on by the switching component, and the designated connecting pipes can be opened for feeding. When it is necessary to sow the first seedling tray, the rice seeds in the first rice cavity can be put into the sowing box through the connecting pipe on the rice box. When it is necessary to sow the second seedling tray, the rice seeds in the second rice cavity can be put into the sowing box through the connecting pipe on the rice box. When it is necessary to sow the third seedling tray, the rice seeds in the third rice cavity can be put into the sowing box through the connecting pipe on the rice box. The designated seedling tray is used to sow the designated variety of rice seeds to avoid the mixing of multiple rice seeds during planting. The recovery tube and the sowing tube can be switched on and off through the sowing component. When the seedling tray needs to be sown, the sowing tube can be opened and the recovery tube can be closed, thereby realizing the sowing of rice seeds. When the sown rice seeds need to be switched, the recovery tube can be opened and the sowing tube can be closed, thereby the rice seeds in the sowing box can be placed in the recovery component to avoid the mixing of other varieties of rice seeds with the unsown rice seeds in the sowing box, thereby ensuring the sowing effect of different varieties of rice seeds. At the same time, multiple sowing branch pipes can be opened at equal distances, so that the rice seeds in multiple sowing branch pipes can be accurately put into the multiple planting holes in the seedling tray, thereby completing the quantitative and timed delivery of rice seeds.

[0008] Optionally, the sliding member includes a support frame fixed on the connecting pipe, a coil spring fixed on the support frame, a movable plate fixed on the coil spring, wedge switches respectively fixed on three opening plates, a neutral switch movably arranged on the support frame, a fixed rod fixed on the neutral switch, four annular springs fixed on the seeding box, and two first vertical rods, two second vertical rods, two third vertical rods and four fourth vertical rods fixed on the long strip, the four annular springs are respectively fixedly connected to the three wedge switches and the neutral switch, and three The three clamping grooves are respectively movably engaged with the three wedge-shaped switches, the neutral switch is slidably connected to the neutral groove, the four fourth vertical poles are movably fitted with the neutral switch, the three wedge-shaped switches are respectively a first switch, a second switch and a third switch, the two first vertical poles are movably fitted with the first switch, the two second vertical poles are movably fitted with the second switch, the two third vertical poles are movably fitted with the third switch, and the inner sides of the three opening plates are provided with opening holes, and the three opening holes are movably connected with the three connecting pipes respectively.

[0009] By adopting the above technical scheme, when the sowing box moves on the three seedling trays in turn, the three wedge-shaped switches will fit and squeeze with the first upright, the second upright and the third upright respectively, and then the pressure of the three wedge-shaped switches can push the three opening plates to move respectively, so that the three connecting pipes can be opened and closed in turn, so that the three different rice seeds in the three rice cavities can be put into the sowing box respectively, so as to realize the switching sowing of different varieties of rice seeds. When the sowing box moves, the four fourth uprights will fit and squeeze with the neutral switch, so as to realize the temporary closure of the designated connecting pipe, so as to release the rice seeds that have not been sown inside the sowing box, and avoid the mixing of different varieties of rice seeds inside the sowing box when opening other connecting pipes.

[0010] Optionally, the switching component includes a switching plate movably arranged in the seeding box, a fixing frame fixed on the seeding box, a limit ring and two fixed pulleys, a wedge-shaped cone block movably arranged on the fixing frame, a limit spring fixed on the wedge-shaped cone block and a fixing rope fixed on the wedge-shaped cone block, one end of the fixing rope is fixedly connected to the switching plate, the two fixed pulleys and the limit ring are slidably connected to the fixing rope, the limit spring is fixedly connected to the fixing frame, the three wedge-shaped switches are movably fitted with the inclined surface of the wedge-shaped cone block, the openings of the recovery pipe and the seeding pipe are movably fitted with the switching plate, a feed hole is opened on the switching plate, and the feed hole is movably fitted with the seeding pipe.

[0011] By adopting the above technical scheme, when the three opening plates respectively open or close the three connecting tubes, the wedge-shaped cone block, the limit spring, the fixed rope and the switching plate will be indirectly driven to translate. The recovery tube and the sowing tube can be switched on and off through the translation of the switching plate. When it is necessary to sow rice seeds, the connecting tube is opened and the sowing tube is opened and the recovery tube is closed at the same time, so as to sow the rice seeds. When it is necessary to switch the sowing of rice seeds, the connecting tube is closed and the sowing tube is closed and the recovery tube is opened at the same time, so that the rice seeds that have been sown in the sowing box can be put into the recovery tube for recycling, thereby avoiding mixing when new rice seeds are added to the sowing box.

[0012] Optionally, the rotating member includes a fixed pipe fixed to the recovery box, the fixed pipe and the recovery pipe are both connected to the feed box, and the fixed pipe is connected to the recovery box; The lifting member includes an adjusting block fixed on the movable gear, two tension springs fixed on the adjusting block, limiting arc blocks respectively fixed on the two tension springs, and a first wedge block, a second wedge block, a first rack and a second rack fixed on the long plate, the first rack and the second rack are both movably engaged with the movable gear, the first wedge block and the second wedge block are both movably fitted with the adjusting block, an arc-shaped slot is opened on the inner side of the spiral fan blade, the number of the arc-shaped slots is two groups, the number of the arc-shaped slots in each group is two, and the two arc-shaped slots in each group are respectively movably engaged with the two limiting arc blocks.

[0013] By adopting the above technical scheme, when the sowing box moves from left to right or from right to left on the long board, it can drive the spiral fan blades to rotate in turn, and then the rice seeds in the recovery tube can be flowed into the feed box. When the spiral fan blades rotate, the rice seeds in the feed box can be transmitted upward, and then the rice seeds will flow into the inner side of the recovery box through the fixed tube. After the sowing box completes sowing of three kinds of rice seeds from left to right or from right to left, through the cooperation of the adjusting block, the first wedge block, the second wedge block, the two tension springs, the two limit arc blocks, the two limit arc blocks and the two groups of arc-shaped grooves, the sowing box can be moved from left to right or from right to left. It will drive the movable gear to move up and down, so that the movable gear is meshed with the first rack and the second rack respectively, and then no matter the sowing box sows the three seedling trays from left to right or from right to left, the excess rice seeds in the sowing box can be recovered and transmitted and put into the inner side of the recovery box.

[0014] Optionally, the driving member includes a connecting frame fixed on the sowing tube, a plurality of telescopic springs fixed on the connecting frame, a connecting gear rotatably arranged on the connecting frame, a movable rod fixed on the connecting gear, a plurality of connecting ropes fixed on the connecting frame, and a segmented rack plate fixed on the long plate, one end of the plurality of connecting ropes are arranged on the movable rod, the plurality of connecting ropes are wound around the movable rod, the plurality of sowing plates are respectively fixedly connected to the plurality of telescopic springs, the other ends of the plurality of connecting ropes are respectively fixedly connected to the plurality of sowing plates, the segmented rack plate is provided with evenly arranged short racks, the plurality of short racks are movably meshed with the connecting gear, a first square hole is opened on the inner side of the plurality of sowing branch pipes, the plurality of sowing plates are respectively slidably connected to the plurality of first square holes, the plurality of sowing branch pipes are located directly above the seedling tray, and the plurality of sowing branch pipes are connected to the sowing tube.

[0015] By adopting the above technical scheme, as the seeding box moves, the connecting gear will gradually mesh with the multiple short racks. When the connecting gear meshes with the short racks, it will drive the connecting gear and the movable rod to rotate, and the multiple connecting ropes can be reeled in respectively, and the multiple seeding plates can be pulled to move respectively, so that the multiple telescopic springs are in a compressed state, and the multiple seeding branches can be opened at the same time, and then the rice seeds inside the multiple seeding branches can be released. When the connecting gear is separated from the short rack, the connecting gear will lose its limit, and the multiple seeding plates can be driven to move by the elastic force of the multiple telescopic springs, so that the multiple seeding plates are closed to the multiple seeding branches again, and the multiple seeding branches can be opened at a fixed distance, and the rice seeds in the multiple seeding branches can be accurately released into the multiple planting holes respectively, so as to complete the quantitative and timed release of rice seeds.

[0016] Optionally, the shaking member includes a shaking rod and two compression springs fixed on a shaking plate, a transmission gear and a cam block rotatably arranged on a seeding box, and a supporting rack fixed on a long plate, the transmission gear is coaxially fixed with the cam block, the transmission gear is movably engaged with the supporting rack, the cam block is movably connected to the shaking rod, the two compression springs are fixedly connected to the seeding box, a long hole is provided on the inner side of the seeding box, the shaking rod is slidably connected to the long hole, the inner side of the shaking plate is provided with evenly distributed dispersion holes, and the inner side of the shaking plate is provided with a long feeding hole.

[0017] By adopting the above technical solution, when the seeding box moves, the transmission gear will mesh with the supporting rack, which will in turn drive the transmission gear and the cam block to rotate and frequently squeeze the shaking rod. The two compression springs can make the shaking plate shake up and down. When the rice seeds fall into the inner side of the shaking plate, the rice seeds can be driven to jump and disperse, and the rice seeds can be evenly dropped into the gap between the two partition plates through the dispersion holes and the long holes, so that the rice seeds can be evenly dispersed and dropped between the two partition plates, which is convenient for the subsequent quantitative sowing of rice seeds.

[0018] Optionally, the limiting member includes a support rod rotatably set in the seeding box, a limiting plate fixed on the switching plate, and two one-way bearings fixed on the outside of the support rod, the four partition plates are all set on the outside of the support rod, the four partition plates are arranged at equal distances on the outside of the support rod, the outsides of the four partition plates are provided with connecting springs, the outsides of the four connecting springs are provided with limiting blocks, the four limit blocks are movably fitted with the limiting plate, the partition plate is located directly below the shaking plate, and the two one-way bearings are fixedly connected to the seeding box.

[0019] By adopting the above technical scheme, the support rod and the four partition plates can only rotate counterclockwise through two one-way bearings, and the partition plates can be temporarily limited counterclockwise through the limit plate and the limit block. As the rice seeds between the two partition plates increase, when the pressure of the accumulation of rice seeds is greater than the bearing pressure of the connecting spring, the limit block will be driven to separate from the limit plate, and the four partition plates and the support rod will rotate counterclockwise, and the rice seeds between the two partition plates will also fall into the inner side of the sowing tube through the feed hole on the switching plate. Through this method, the intermittent counterclockwise rotation of the four partition plates can be achieved, and the rice seeds can be frequently quantified and quantitatively delivered, and the rice seeds can be quantitatively delivered to multiple sowing tubes.

[0020] Optionally, the translation member includes a threaded rod rotatably arranged on the long board, a threaded block fixed on the seeding box, and a motor fixed on the long board, the threaded rod is fixedly connected to the output shaft of the motor, and the threaded rod is threadedly connected to the threaded block.

[0021] By adopting the above technical scheme, the threaded rod can be driven to rotate by the motor, which can then drive the threaded block, the sowing box, the rice box, the recycling box and multiple sowing pipes to translate above the long board in turn. By moving the multiple sowing pipes above the long board, the three seedling trays can be sown in sequence.

[0022] Optionally, the three connecting pipes are all connected to the recovery box, the three material baffle plates are provided with connecting rods, the three connecting rods are respectively fixedly connected to the three wedge-shaped switches, the support frame is provided with three fixed sliding holes, and the three connecting rods are respectively slidably connected to the three fixed sliding holes.

[0023] By adopting the above technical solution, when the three wedge-shaped switches drive the three connecting rods to move respectively, they will also indirectly drive the three baffle plates to move respectively. Through the movement of the three baffle plates, the designated connecting pipe can be opened, and then the rice seeds collected inside the recycling box can be placed in the designated rice cavity in the rice box, avoiding the rice seeds from being mixed with rice seeds of different varieties in the rice box.

[0024] The second aspect of the present application provides a sowing method for identifying disease resistance of rice varieties at the seedling stage, which adopts the following technical scheme: The present application also discloses a sowing method for identifying the disease resistance of rice varieties at the seedling stage. Based on the above-mentioned sowing device for identifying the disease resistance of rice varieties at the seedling stage, the method comprises the following steps: S1. The translation member can sequentially drive the seeding box, the rice box, the recycling box and a plurality of seeding branches to translate above the long strip. When the seeding box is about to approach the first cultivation tray, the second cultivation tray or the third cultivation tray, the first vertical rod, the second vertical rod and the third vertical rod will fit with the corresponding wedge switches respectively. The thrust of the seeding box movement and the connection and cooperation between the corresponding annular spring, the corresponding connecting rod, the corresponding clamping groove, the movable plate and the spiral spring can move the corresponding baffle plate, so that the opening hole on the corresponding opening plate is connected with the corresponding connecting pipe, and the corresponding baffle plate and the corresponding connecting pipe are closed, so that the rice seeds in the three rice cavities can flow into the inner side of the seeding box through the connecting pipe respectively, and the rice seeds of the specified variety can be sown in the seeding box; S2. When the sowing box is about to move from the first cultivation tray to the second cultivation tray, from the second cultivation tray to the third cultivation tray, from the third cultivation tray to the second cultivation tray, from the second cultivation tray to the first cultivation tray, or from the first cultivation tray, the corresponding fourth upright rod will fit with the neutral switch, and the thrust of the movement of the sowing box can move the fixed rod to the neutral slot, which can push the movable plate to move, and at the same time, cooperate with the elastic force of the spiral spring to move the connecting rod clamped in the clamping slot. The relaxation elastic force of the corresponding annular spring can drive the opening plate, the wedge switch, the connecting rod and the baffle plate to move in turn, so that the corresponding connecting pipe is closed, the corresponding baffle plate and the corresponding connecting pipe are opened, and the release of the current variety of rice seeds is temporarily stopped, and the rice seeds that have not been sown in the sowing box are first transmitted and recovered; S3. When the wedge switch moves, it will also drive the wedge cone block to move. The limit spring and the fixed rope can drive the switching plate to move horizontally, so that the recovery pipe and the sowing pipe are switched on and off. When the connecting pipe is opened, the recovery pipe is closed and the sowing pipe is opened, so that when the rice box throws rice seeds into the sowing box, they fall smoothly into the sowing pipe for uniform sowing in the subsequent sequence. When the connecting pipe is closed, the recovery pipe is opened and the sowing pipe is closed, and the excess rice seeds in the sowing box will flow into the recovery pipe, so that the unsown rice seeds can be recovered; S4. The rice seeds in the recovery tube can be transferred to the recovery box through the recovery component, and can be placed in the designated rice cavity according to the corresponding opened connecting tube, so as to realize the recovery of the designated variety of rice seeds. When the connecting tube puts the rice seeds into the sowing box, it will fall on the shaking plate. The shaking component can make the rice seeds evenly dispersed on the shaking plate and fall into the gap between the two partition plates. The quantitative component can frequently quantify the rice seeds, and then quantitatively release the rice seeds. The rice seeds can be quantitatively released into multiple sowing sub-tubes. The sowing component can open multiple sowing sub-tubes at a fixed distance, and accurately release the rice seeds in multiple sowing sub-tubes into multiple planting holes of the seedling tray, so as to complete the quantitative and timed release of rice seeds.

[0025] By adopting the above technical scheme, the purpose of switching sowing of multiple rice seeds can be achieved, and multiple rice seeds can be sown in sequence. At the same time, different rice seeds can be avoided from being mixed together. When it is necessary to switch sowing, there is no need to pour out the rice seeds that have not been sown in the sowing device. The rice seeds that have not been sown can be directly transferred to the designated position, which saves time and labor, and there is no need to constantly replace different varieties of rice seeds in the sowing device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The switching component, shaking component, quantitative component, recovery component and sowing component in this technology are all driven simultaneously by the translation part. Therefore, the switching delivery, shaking dispersion, quantitative delivery, recovery transmission and uniform sowing of rice seeds are all driven by a power source of the translation part. The whole system does not need to be driven by other additional power sources, and does not need to set two or more power sources to realize the switching sowing of multiple rice seeds, which reduces energy waste; 2. The translation member can sequentially drive the seeding box, the rice box, the recycling box and a plurality of seeding branch pipes to translate on the top of the long board. When the seeding box is about to approach the first, second or third growing tray, the first upright pole, the second upright pole and the third upright pole will fit with the corresponding wedge switches respectively. Through the thrust of the seeding box movement and the connection and cooperation between the corresponding annular spring, the corresponding connecting rod, the corresponding clamping groove, the movable plate and the spiral spring, the corresponding baffle plate can be moved to connect the opening hole on the corresponding opening plate with the corresponding connecting pipe. The corresponding baffle plate and the corresponding connecting pipe are closed, so that the rice seeds in the three rice cavities can flow into the inner side of the seeding box through the connecting pipe respectively, and the rice seeds of the specified variety can be sown in the seeding box. When the seeding box is about to move from the first, second or third growing tray, the first upright pole, the second upright pole and the third upright pole will fit with the corresponding wedge switches respectively. When one cultivation tray approaches the second cultivation tray, approaches the third cultivation tray from the second cultivation tray, moves out from the third cultivation tray, approaches the second cultivation tray from the third cultivation tray, approaches the first cultivation tray from the second cultivation tray, or moves out from the first cultivation tray, the corresponding fourth upright rod will fit with the neutral switch, and the fixed rod can be moved into the neutral slot by the thrust of the movement of the sowing box, and the movable plate can be pushed to move. At the same time, the connecting rod clamped in the clamping slot can be moved out in conjunction with the elastic force of the spiral spring, and the opening plate, the wedge switch, the connecting rod and the baffle plate can be driven to move in turn by the relaxation elastic force of the corresponding annular spring, so that the corresponding connecting pipe is closed, the corresponding baffle plate and the corresponding connecting pipe are opened, and the delivery of the current variety of rice seeds is temporarily stopped, and the rice seeds that have not been sown in the sowing box are first transmitted and recovered; 3. When the wedge-shaped switch moves, it will also drive the wedge-shaped cone block to move. With the help of the limit spring and the fixed rope, the switching plate can be driven to move horizontally, so that the recovery tube and the sowing tube are switched on and off. When the connecting tube is opened, the recovery tube is closed and the sowing tube is opened, so that when the rice box throws rice seeds into the sowing box, they can fall into the sowing tube smoothly to facilitate uniform sowing in the subsequent sequence. When the connecting tube is closed, the recovery tube is opened and the sowing tube is closed, and the excess rice seeds in the sowing box will flow into the recovery tube, and the unsown rice seeds can be recovered. The rice seeds in the recovery tube can be transferred to the recovery box through the recovery component, and can be placed in the designated rice cavity according to the corresponding opened connecting tube. , to realize the recycling of designated varieties of rice seeds, when the connecting pipe puts the rice seeds into the sowing box, they will fall on the shaking plate, and the shaking component can make the rice seeds evenly dispersed on the shaking plate and fall into the gap between the two partition plates, and the quantitative component can be used to frequently quantify the rice seeds, and then the rice seeds can be quantitatively put, and the rice seeds can be quantitatively put into multiple sowing branches, and the sowing components can open multiple sowing branches at fixed distances, and the rice seeds in the multiple sowing branches can be accurately put into multiple planting holes of the seedling tray, and the quantitative and timed release of rice seeds can be completed; 4. Through the above principle, the switching feeding of three different rice seeds in the rice box can be realized. When the rice seeds in the first rice chamber need to be fed, the first connecting pipe can be automatically opened, the first square pipe can be automatically closed, the sowing pipe can be automatically opened, and the recovery pipe can be automatically closed, so that the rice seeds in the first rice chamber can be put into the sowing box, the sowing pipe and the inner side of multiple sowing branch pipes in turn for sowing processing. When the rice seeds in the second rice chamber need to be fed, the second connecting pipe can be automatically opened, the second square pipe can be automatically closed, the sowing pipe can be automatically opened, and the recovery pipe can be automatically closed, so that the rice seeds in the first rice chamber can be put into the sowing box, the sowing pipe and the inner side of multiple sowing branch pipes in turn for sowing processing. The rice seeds in the third rice cavity can be put into the inner sides of the sowing box, the sowing tube and the multiple sowing branch pipes for sowing processing. When the rice seeds in the third rice cavity need to be fed, the third connecting pipe can be automatically opened, the third pipe can be automatically closed, the sowing tube can be automatically opened, and the recovery tube can be automatically closed, so that the rice seeds in the third rice cavity can be put into the inner sides of the sowing box, the sowing tube and the multiple sowing branch pipes for sowing processing in turn. At the same time, when it is necessary to switch and feed the rice seeds inside the sowing box, the connecting pipe can be automatically closed, the connecting pipe can be automatically opened, the sowing tube can be automatically closed, and the recovery tube can be automatically opened, so as to automatically prevent the rice box from continuing to feed into the sowing box. The rice seeds in the sowing box will flow into the feeding box through the recovery pipe, and then through the transmission of the spiral fan blades, the rice seeds in the feeding box can be put into the inner side of the recovery box through the fixed pipe, and at the same time, they can be put into the designated rice cavity in the rice box according to the corresponding opened connecting pipe, so as to realize the recovery of the designated variety of rice seeds. After the rice seeds that have not been sown in the sowing box are transmitted and recovered, the above method can continue to put rice seeds of other varieties into the sowing box, so as to prevent rice seeds of different varieties from being mixed together, realize the switching sowing of rice seeds of different varieties, and achieve the switching sowing of multiple rice seeds. Purpose: Multiple rice seeds can be sown in sequence, and different rice seeds can be avoided from being mixed together. When switching sowing, there is no need to pour out the rice seeds that have not been sown in the sowing device, and the rice seeds that have not been sown can be directly transferred to the designated position. There is no need to constantly replace different varieties of rice seeds in the sowing device, which ensures the efficiency of the sowing device for sowing multiple rice seeds. This method can effectively avoid the confusion of rice seeds of different varieties. When conducting disease resistance detection and cultivation, the influence of different soils on the disease resistance of varieties can be reflected, thereby ensuring the results of disease resistance detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 Appearance diagram of the long strip board connection structure in the embodiment of the present application; Figure 3 A cross-sectional view of the connection structure of the seeding box in the embodiment of the present application; Figure 4 Appearance diagram of the seeding box connection structure in the embodiment of the present application; Figure 5 Appearance diagram of the support frame connection structure in the embodiment of the present application; Figure 6 Appearance diagram of the movable plate connection structure in the embodiment of the present application; Figure 7 Appearance diagram of the supporting rack connection structure in the embodiment of the present application; Figure 8 A cross-sectional view of the sowing tube connection structure in the embodiment of the present application; Fig. 9 Embodiments of the present application Figure 7 Enlarged view of point A in the middle; Fig.10 Embodiments of the present application Figure 3 Enlarged view of point B in the middle.

[0028] Figure numerals: 1, long board; 2, seeding box; 3, rice box; 4, connecting pipe; 5, recovery box; 6, seedling tray; 7, support frame; 8, spiral spring; 9, movable plate; 10, fixed rod; 11, annular spring; 12, opening plate; 13, wedge switch; 14, connecting rod; 15, material blocking plate; 16, connecting pipe; 17, switching plate; 18, fixed rope; 19, fixed pulley; 20, limiting ring; 21, fixing frame; 22, limiting spring; 23, wedge cone block; 24, neutral switch; 25, supporting rod; 26, partition plate; 27, one-way bearing; 28, connecting spring; 29, limiting block; 30, limiting plate; 31, shaking plate; 32, compression spring; 33, shaking rod; 34. Transmission gear; 35. Cam block; 36. Support rack; 37. First vertical pole; 38. Second vertical pole; 39. Third vertical pole; 40. Fourth vertical pole; 41. First rack; 42. Second rack; 43. First wedge block; 44. Second wedge block; 45. Movable gear; 46. Adjustment block; 47. Tension spring; 48. Spiral fan blade; 49. Feed box; 50. Fixed pipe; 51. Recovery pipe; 52. Limiting arc block; 53. Seeding pipe; 54. Seeding branch pipe; 55. Connecting frame; 56. Movable rod; 57. Connecting gear; 58. Connecting rope; 59. Seeding plate; 60. Telescopic spring; 61. Segmented rack plate; 62. Motor; 63. Threaded rod; 64. Threaded block. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-10 This application is described in further detail.

[0030] Embodiment 1:

[0031] The present application embodiment discloses a sowing device for identifying disease resistance of rice varieties at the seedling stage, referring to Figure 1 and Figure 2, comprising a long board 1, three seedling trays 6 fixed on the long board 1, a sowing box 2 arranged on the long board 1, a rice box 3 and a recovery box 5 fixed above the sowing box 2, and three connecting pipes 4 fixedly connected to the rice box 3, the three seedling trays 6 are respectively a first seedling tray, a second seedling tray and a third seedling tray, the inner side of the rice box 3 is provided with three rice cavities, the three rice cavities are respectively a first rice cavity, a second rice cavity and a third rice cavity, the three connecting pipes 4 are respectively a first connecting pipe, a second connecting pipe and a third connecting pipe, and a translation member for driving the sowing box 2 to translate is provided on the long board 1 The sowing box 2 is provided with a switching assembly for switching on the three connecting pipes 4, and the three connecting pipes 4 are respectively connected to the three rice chambers; the sowing box 2 is provided with a processing mechanism for shaking, quantitative, recovering and sowing rice seeds, and the processing mechanism includes a shaking assembly, a quantitative assembly, a recovery assembly and a sowing assembly; the switching assembly includes a cutting plate 12 movably arranged on the three connecting pipes 4 and a sliding member for slidingly driving the three cutting plates 12; the shaking assembly includes a shaking plate 31 movably arranged on the inner side of the sowing box 2 and a sliding member for sliding the shaking plate 31 The quantitative component includes four partition plates 26 rotatably arranged in the seeding box 2 and a limiter for limiting the rotation of the four partition plates 26; the recovery component includes a feed box 49 and a recovery pipe 51 fixed to the seeding box 2, a spiral blade 48 rotatably arranged in the feed box 49 and a rotating member for driving the spiral blade 48 to rotate; the sowing component includes a sowing tube 53 fixed to the seeding box 2, a plurality of sowing branch pipes 54 fixed to the sowing tube 53, a sowing plate 59 movably arranged on the plurality of sowing tubes 53, and a plurality of sowing branches 54 for sowing the seeds. A driving member for driving the sowing plate 59 for translation and a switching member for switching and opening the recovery tube 51 and the sowing tube 53, the switching member is driven by a sliding member; the rotating member includes a movable gear 45 arranged on the spiral fan blade 48 and a lifting member for driving the movable gear 45 to lift and lower; the recovery box 5 is provided with connecting tubes 16 respectively connected to the three rice chambers and baffle plates 15 respectively movably arranged on the three connecting tubes 16, the three baffle plates 15 are driven for translation by a sliding member, and the three connecting tubes 16 are respectively a first square tube, a first square tube and a third square tube.

[0032] The sliding member includes a support frame 7 fixed on the connecting pipe 4, a coil spring 8 fixed on the support frame 7, a movable plate 9 fixed on the coil spring 8, a wedge switch 13 respectively fixed on three opening plates 12, a neutral switch 24 movably arranged on the support frame 7, a fixed rod 10 fixed on the neutral switch 24, four annular springs 11 fixed on the seed box 2, and two first vertical rods 37, two second vertical rods 38, two third vertical rods 39 and four fourth vertical rods 40 fixed on the long strip 1. The four annular springs 11 are respectively fixedly connected with the three wedge switches 13 and the neutral switch 24. The inner side of the movable plate 9 is provided with three clamping grooves and a neutral groove. The three clamping grooves are respectively movably clamped with the three wedge switches 13. The neutral switch 24 is slidably connected to the neutral groove, fixed square holes are provided on the inner sides of the three connecting pipes 4, and the three opening plates 12 are slidably connected to the three fixed square holes respectively. The four fourth vertical poles 40 are movably fitted with the neutral switch 24, and the three wedge-shaped switches 13 are respectively the first switch, the second switch and the third switch. The two first vertical poles 37 are movably fitted with the first switch, the two second vertical poles 38 are movably fitted with the second switch, and the two third vertical poles 39 are movably fitted with the third switch. Four connecting holes are provided on the inner side of the support frame 7, and the four connecting holes are slidably connected with the three wedge-shaped switches 13 and the neutral switch 24 respectively. The inner sides of the three opening plates 12 are provided with opening holes, and the three opening holes are movably connected with the three connecting pipes 4 respectively.

[0033] The switching member includes a switching plate 17 movably arranged in the seed box 2, a fixing frame 21 fixed on the seed box 2, a limiting ring 20 and two fixed pulleys 19, a wedge-shaped cone block 23 movably arranged on the fixing frame 21, a limiting spring 22 fixed on the wedge-shaped cone block 23 and a fixing rope 18 fixed on the wedge-shaped cone block 23, one end of the fixing rope 18 is fixedly connected to the switching plate 17, the two fixed pulleys 19 and the limiting ring 20 are both slidably connected to the fixing rope 18, a limiting hole is provided on the inner side of the fixing frame 21, the wedge-shaped cone block 23 is slidably connected to the limiting hole, the limiting spring 22 is fixedly connected to the fixing frame 21, and the three wedge switches 13 are all connected to the fixing frame 21. The inclined surface of the wedge-shaped cone block 23 is movably fitted, a fixing hole is provided on the inner side of the seeding box 2, and the fixing rope 18 is slidably connected to the fixing hole. The wedge-shaped cone block 23 can be limited by the limiting hole to prevent the wedge-shaped cone block 23 from swinging at will. The openings of the recovery tube 51 and the seeding tube 53 are both movably fitted with the switching plate 17. A feeding hole is provided on the switching plate 17, and the feeding hole is movably fitted with the seeding tube 53. A dovetail groove is provided on the inner side of the seeding box 2, and the switching plate 17 is slidably connected to the dovetail groove. The switching plate 17 can be limited by the dovetail groove to prevent the switching plate 17 from swinging at will when sliding. The recovery tube 51 and the seeding tube 53 are both connected to the seeding box 2.

[0034] The rotating member includes a fixed pipe 50 fixed on the recovery box 5, the fixed pipe 50 and the recovery pipe 51 are both connected to the feed box 49, the fixed pipe 50 is connected to the recovery box 5, the rice box 3 is fixedly connected to the recovery box 5, the lifting member includes an adjustment block 46 fixed on the movable gear 45, two tension springs 47 fixed on the adjustment block 46, a limit arc block 52 respectively fixed on the two tension springs 47, and a first wedge block 43, a second wedge block 44, a first rack 41 and a second rack 42 fixed on the long strip 1, the first rack 41 and the second rack 42 are both movably meshed with the movable gear 45, and the first wedge block 43 and the second wedge block 44 are both meshed with the adjustment block 46 Active fitting, an arc-shaped slot is provided on the inner side of the spiral blade 48, the number of the arc-shaped slots is two groups, the number of the arc-shaped slots in each group is two, and each group of two arc-shaped slots is respectively movably connected with two limiting arc blocks 52, a fixed slot is provided on the top of the long plate 1, the first wedge block 43, the second wedge block 44, the movable gear 45, the first rack 41 and the second rack 42 are all located on the inner side of the fixed slot, a fixed square slot is provided on the inner side of the spiral blade 48, the adjustment block 46 is slidably connected to the fixed square slot, and the adjustment block 46 can be limited by the fixed square slot to prevent the adjustment block 46 from rotating when it is adjusted up and down, and at the same time, when the adjustment block 46 rotates, the spiral blade 48 can be driven to rotate.

[0035] The driving member includes a connecting frame 55 fixed on the sowing tube 53, a plurality of telescopic springs 60 fixed on the connecting frame 55, a connecting gear 57 rotatably arranged on the connecting frame 55, a movable rod 56 fixed on the connecting gear 57, a plurality of connecting ropes 58 fixed on the connecting frame 55, and a segmented rack plate 61 fixed on the long plate 1, one end of the plurality of connecting ropes 58 are fixedly connected to the movable rod 56, the plurality of connecting ropes 58 are all wound around the movable rod 56, a plurality of sowing plates 59 are respectively fixedly connected to the plurality of telescopic springs 60, the other ends of the plurality of connecting ropes 58 are respectively fixedly connected to the plurality of sowing plates 59, the segmented rack plate 61 is provided with evenly arranged short racks, the plurality of short racks are movably engaged with the connecting gear 57, a plurality of sowing branch pipes 54 are each provided with a first square hole on the inner side, the plurality of sowing plates 59 are respectively slidably connected to the plurality of first square holes, the plurality of sowing branch pipes 54 are each located directly above the seedling tray 6, and the plurality of sowing branch pipes 54 are each connected to the sowing tube 53.

[0036] The shaking member includes a shaking rod 33 and two compression springs 32 fixed on the shaking plate 31, a transmission gear 34 and a cam block 35 rotatably arranged on the seed box 2, and a supporting rack 36 fixed on the long plate 1, the transmission gear 34 is coaxially fixed with the cam block 35, the transmission gear 34 is movably engaged with the supporting rack 36, the cam block 35 is movably connected with the shaking rod 33, the two compression springs 32 are both fixedly connected with the seed box 2, a long hole is opened on the inner side of the seed box 2, the shaking rod 33 is slidably connected with the long hole, the inner side of the shaking plate 31 is opened with evenly distributed dispersion holes, the inner side of the shaking plate 31 is opened with a long feeding hole, and the bottom of the shaking plate 31 is V-shaped and inclined.

[0037] The limiting member includes a support rod 25 rotatably set in the seed box 2, a limiting plate 30 fixed on the switching plate 17, and two one-way bearings 27 fixed on the outside of the support rod 25. The four partition plates 26 are all fixedly connected to the outside of the support rod 25. The four partition plates 26 are arranged at equal distances on the outside of the support rod 25. The outsides of the four partition plates 26 are all fixedly connected with connecting springs 28. The outsides of the four connecting springs 28 are all fixedly connected with limiting blocks 29. The four limiting blocks 29 are all movably fitted with the limiting plate 30. The partition plate 26 is located directly below the shaking plate 31. The two one-way bearings 27 are all fixedly connected to the seed box 2.

[0038] The translation member includes a threaded rod 63 rotatably arranged on the long strip plate 1, a threaded block 64 fixed on the sowing box 2, and a motor 62 fixed on the long strip plate 1, the threaded rod 63 is fixedly connected to the output shaft of the motor 62, the threaded rod 63 is threadedly connected to the threaded block 64, the bottom of the sowing box 2 is provided with two dovetail long grooves, two dovetail long plates are fixedly connected to the long strip plate 1, the two dovetail long plates are respectively slidably connected to the two dovetail long grooves, and the sowing box 2 can be restricted from rotating in a circle by the two dovetail long plates and the two dovetail long grooves, the three connecting pipes 16 are all connected to the recovery box 5, the three baffle plates 15 are all fixedly connected with connecting rods 14, the three connecting rods 14 are respectively fixedly connected with the three wedge switches 13, the support frame 7 is provided with three fixed sliding holes, the three connecting rods 14 are respectively slidably connected with the three fixed sliding holes, and the three rice boxes 3 are all fixedly connected with feeding pipes, and rice seeds can be added to the inner sides of the three rice cavities respectively through the three feeding pipes.

[0039] The lengths of the three wedge-shaped switches 13 and the neutral switch 24 are different. The second switch is longer than the first switch, the third switch is longer than the second switch, and the neutral switch 24 is longer than the third switch. The first vertical pole 37, the second vertical pole 38, the third vertical pole 39 and the fourth vertical pole 40 are horizontally misaligned. The second switch, the third switch and the neutral switch 24 are each provided with a first U-shaped groove, and the two first vertical poles 37 correspond to the first U-shaped groove, which can prevent the second switch, the third switch and the neutral switch 24 from colliding with the first vertical pole 37 when moving. The third switch and the neutral switch 24 are each provided with a second U-shaped groove, and the two second vertical poles 38 correspond to the second U-shaped groove, which can prevent the third switch and the neutral switch 24 from colliding with the second vertical pole 38 when moving. The neutral switch 24 is provided with a third U-shaped groove, and the two third vertical poles 39 correspond to the third U-shaped groove, which can prevent the neutral switch 24 from colliding with the second vertical pole 38 when moving. When colliding with the third upright rod 39, the two first upright rods 37 are all located on the same horizontal line, the two first upright rods 37 are respectively located on the left and right sides of the first breeding tray, the two second upright rods 38 are all located on the same horizontal line, the two second upright rods 38 are respectively located on the left and right sides of the second breeding tray, the two third upright rods 39 are all located on the same horizontal line, the two third upright rods 39 are respectively located on the left and right sides of the third breeding tray, and the four fourth upright rods 40 are all located on the same horizontal line. The four fourth upright rods 40 are respectively located on the right side of the first breeding tray, on the left side of the third breeding tray, between the first breeding tray and the second breeding tray, and between the second breeding tray and the third breeding tray. Evenly distributed planting holes are provided on the three seedling trays 6. The one-way bearing 27 is composed of an inner sleeve, a rolling element and an outer sleeve. The inner sleeve is fixedly connected to the support rod 25, is responsible for bearing the axial load, and enables the shaft to achieve unidirectional rotation. The outer sleeve is fixedly connected to the seeding box 2.

[0040] The implementation principle of a sowing device for identifying disease resistance of rice varieties at the seedling stage in the embodiment of the present application is as follows: (1) The motor 62 can drive the threaded rod 63 to rotate, thereby driving the threaded block 64, the sowing box 2, the rice box 3, the recycling box 5 and the plurality of sowing branches 54 to move horizontally above the long board 1 in sequence; (2) When the seeding box 2 is about to approach the first breeding tray, the first vertical rod 37 will fit with the first switch. The thrust of the movement of the seeding box 2 can make the corresponding annular spring 11 in a compressed state, and then the first switch, the corresponding opening plate 12, the corresponding connecting rod 14 and the corresponding material baffle plate 15 can be moved in sequence, so that the opening hole on the corresponding opening plate 12 is connected with the first connecting pipe, and the corresponding material baffle plate 15 is closed with the first square pipe, so that the movable plate 9 can be pushed to move. At the same time, with the elastic force of the spiral spring 8, the corresponding connecting rod 14 will move to the corresponding clamping groove for clamping, so that the opening hole and the connecting pipe 4 are stably connected and fit, so that the connecting pipe 4 on the first rice cavity can be opened, and then the rice seeds in the first rice cavity will flow into the inner side of the seeding box 2 through the first connecting pipe, and the rice seeds can be scattered in the seeding box 2 for processing and sowing; (3) When the seeding box 2 is about to approach the second seeding tray, the second vertical rod 38 will fit with the second switch. The thrust of the movement of the seeding box 2 can make the corresponding annular spring 11 in a compressed state, and then the second switch, the corresponding opening plate 12, the corresponding connecting rod 14 and the corresponding material blocking plate 15 can be moved in sequence, so that the opening hole on the corresponding opening plate 12 is connected with the second connecting pipe, and the corresponding material blocking plate 15 is closed with the second square pipe, so that the movable plate 9 can be pushed to move. At the same time, with the elastic force of the spiral spring 8, the corresponding connecting rod 14 will move to the corresponding clamping groove for clamping, so that the opening hole and the connecting pipe 4 are stably connected and fit, so that the connecting pipe 4 on the second rice cavity can be opened, and then the rice seeds in the second rice cavity will flow into the inner side of the seeding box 2 through the second connecting pipe, and the second rice seeds can be sown in the seeding box 2 for processing and sowing; (4) When the seeding box 2 is about to approach the third breeding tray, the third upright rod 39 will fit with the third switch. The thrust of the movement of the seeding box 2 can make the corresponding annular spring 11 in a compressed state, and then the third switch, the corresponding opening plate 12, the corresponding connecting rod 14 and the corresponding material baffle plate 15 can be moved in sequence, so that the opening hole on the corresponding opening plate 12 is connected with the third connecting pipe, and the corresponding material baffle plate 15 is closed with the third tube, so that the movable plate 9 can be pushed to move. At the same time, with the elastic force of the spiral spring 8, the corresponding connecting rod 14 will move to the corresponding clamping groove for clamping, so that the opening hole and the connecting pipe 4 are stably connected and fit, so that the connecting pipe 4 on the third rice cavity can be opened, and then the rice seeds in the third rice cavity will flow into the inner side of the seeding box 2 through the third connecting pipe, and the third rice seeds can be sown in the seeding box 2 for processing and sowing; (5) At the same time, when the inside of the sowing box 2 is switching different rice seeds, the rice seeds that have not been sown in the sowing box 2 can be recovered first, and then when the sowing box 2 is about to move from the first cultivation tray to the second cultivation tray, from the second cultivation tray to the third cultivation tray, from the third cultivation tray to the second cultivation tray, from the second cultivation tray to the first cultivation tray, or from the first cultivation tray, the corresponding fourth vertical rod 40 will fit with the neutral switch 24, and the thrust of the movement of the sowing box 2 can drive the fixed rod 10 to move, so that the corresponding annular spring 11 can be in a compressed state, and the fixed rod 1 0 is moved into the neutral groove, and the movable plate 9 can be pushed to move by the movement of the fixed rod 10 and the inclined surface of the neutral groove. At the same time, the connecting rod 14 clamped in the clamping groove can be moved out by the elastic force of the spiral spring 8. The corresponding annular spring 11 is relaxed and the opening plate 12, the wedge switch 13, the connecting rod 14 and the baffle plate 15 can be driven to move in sequence, so that the opening plate 12 and the baffle plate 15 rebound, so that the opening hole on the corresponding opening plate 12 is misaligned with the corresponding connecting pipe 4, so that the corresponding connecting pipe 4 is closed, and the corresponding baffle plate 15 and the corresponding connecting pipe 16 are opened; (6) When the corresponding wedge-shaped switch 13 drives the corresponding opening plate 12 to push and the corresponding connecting pipe 4 is opened, the wedge-shaped cone block 23 is also driven to move, and the elastic force of the limit spring 22 can drive the wedge-shaped cone block 23 to move downward, which will cause the fixed rope 18 to lose pressure, and then cooperate with the two fixed pulleys 19 and the limit ring 20 and the power of the switching plate 17 to slide downward, so that the switching plate 17 and the opening of the recovery pipe 51 can be closed, so that the feed hole on the switching plate 17 fits with the opening of the sowing pipe 53, so that the sowing pipe 53 is in an open state and the recovery pipe 51 is in a closed state, so that when the rice box 3 is sowing the rice seeds in the sowing box 2, the rice seeds in the sowing box 2 can fall smoothly into the sowing pipe 53, so as to facilitate the subsequent uniform sowing; (7) At the same time, when the neutral switch 24 drives the designated wedge switch 13 and the opening plate 12 to rebound and reset, the wedge switch 13 will gradually separate from the wedge cone block 23, and the elastic force of the limit spring 22 can drive the wedge cone block 23 to move upward, and then cooperate with the two fixed pulleys 19 and the limit ring 20 and the elastic force of the limit spring 22 to drive the switching plate 17 and the limit plate 30 to move upward in turn, so that the switching plate 17 can be separated from the opening of the recovery pipe 51, and the feed hole on the switching plate 17 can be misaligned with the opening of the sowing pipe 53, so that the sowing pipe 53 is in a closed state. The recovery pipe 51 is in the open state, and the excess rice seeds in the sowing box 2 will flow to the inner side of the recovery pipe 51 at this time, so as to facilitate the subsequent recovery of the rice seeds and prevent the rice box 3 from mixing with the excess rice seeds in the sowing box 2 when putting new rice seeds in the sowing box 2. When the switching plate 17 drives the limit plate 30 to move upward, the limit plate 30 and the limit block 29 will be misaligned, and the counterclockwise rotation of the four partition plates 26 will not be limited. At this time, when there are rice seeds on the four partition plates 26, they can quickly flow through the sowing box 2 to the inner side of the recovery pipe 51; (8) When the sowing box 2 moves from left to right on the long board 1, the movable gear 45 will mesh with the first rack 41, and then through the thrust of the sowing box 2 and the meshing of the first rack 41, the movable gear 45, the adjustment block 46 and the spiral blade 48 can be driven to rotate in turn. Then, when the rice seeds in the sowing box 2 flow into the feed box 49 through the recovery pipe 51, the rice seeds in the feed box 49 can be transmitted upward through the rotation of the spiral blade 48, and then the rice seeds will flow into the inner side of the recovery box 5 through the fixed pipe 50. When the sowing box 2 completes sowing of the three kinds of rice seeds from left to right, the adjustment block 46 will gradually fit with the inclined surface of the first wedge block 43, and then push the adjustment block 46 and the movable gear 45 in turn. The two limit arc blocks 52 are separated from the two arc-shaped slots currently engaged, so that the adjusting block 46 loses its limit position, and the two limit arc blocks 52 correspond to the two arc-shaped slots above, respectively. Then, the adjusting block 46 and the movable gear 45 can be re-limited, so that the movable gear 45 and the second rack 42 are kept on the same horizontal line. Then, when the seeding box 2 is sown from right to left, the movable gear 45 is meshed with the second rack 42, and then, through the thrust of the seeding box 2 and the meshing of the second rack 42, the movable gear 45, the adjusting block 46 and the spiral fan blades 48 can be driven to rotate in turn, so that the rice seeds can be transmitted upward and the rice seeds can be placed in the seeding box 2. The fixed pipe 50 flows into the inner side of the recovery box 5. When the sowing box 2 finishes sowing the three kinds of rice seeds from right to left, the adjusting block 46 will gradually fit with the inclined surface of the second wedge-shaped block 44, and then push the adjusting block 46 and the movable gear 45 downward in turn, so that the four tension springs 47 are in an extruded state, and the four limiting arc blocks 52 will be separated from the four arc-shaped card slots currently engaged, so that the adjusting block 46 loses its limit, so that the four limiting arc blocks 52 correspond to the four arc-shaped card slots below, respectively, and then the adjusting block 46 and the movable gear 45 can be re-limited, so that the movable gear 45 and the first rack 41 are kept on the same horizontal line, and then through this method, no matter whether the sowing box 2 sows the three seedling trays 6 from left to right or Whether sowing is carried out from right to left, the redundant rice seeds in the sowing box 2 can be recovered and transmitted, so as to avoid the mixing of different kinds of rice seeds when the rice seeds in the three sowing boxes 2 are switched for sowing, so as to ensure the sowing needs of different kinds of rice seeds, and the three different kinds of rice seeds can be evenly placed in the three seedling trays 6 respectively, so as to ensure the sowing and cultivation needs of the three seedling trays 6 respectively, and at the same time, through the position connection relationship of the two first uprights 37, the two second uprights 38, the two third uprights 39, the four fourth uprights 40, the three wedge switches 13, the neutral switch 24, the three clamping grooves and the neutral groove, the sowing box 2 can be switched from left to right or from right to left for sowing; (9) When the seeding box 2 moves on the long strip board 1, the transmission gear 34 will mesh with the support rack 36. The thrust of the seeding box 2 and the meshing of the support rack 36 will drive the transmission gear 34 and the cam block 35 to rotate in turn. When the cam block 35 rotates, it will frequently squeeze the shaking rod 33, and then cooperate with the two compression springs 32 to make the shaking plate 31 shake up and down on the inner side of the seeding box 2. When the rice seeds in the rice box 3 fall into the inner side of the shaking plate 31, the up and down movement of the shaking plate 31 can drive the rice seeds to jump, and then the rice seeds can be dispersed on the inner side of the shaking plate 31. The rice seeds can be evenly dropped into the gap between the two partition plates 26 through the dispersion holes and the long strip holes. The support rod 25 can be limited in one direction by two one-way bearings 27, so that the support rod 25 and the four partition plates 26 can only rotate counterclockwise and cannot rotate clockwise. The partition plate 26 can be temporarily limited counterclockwise by the limiting plate 30 and the limiting block 29, and as the rice seeds between the two partition plates 26 increase, the extrusion force of the connecting spring 28 and the limiting block 29 will also increase accordingly. When the pressure of the rice seeds accumulation is greater than the bearing pressure of the connecting spring 28, the connecting spring 28 will be squeezed, and then the limiting block 29 will be driven to separate from the limiting plate 30, so that the four partition plates 26 and the support rod 25 will rotate counterclockwise, so that the rice seeds between the two partition plates 26 will also fall into the inner bottom wall of the sowing box 2, and then fall into the inner side of the multiple sowing branch pipes 54 through the feeding hole and the sowing tube 53 on the switching plate 17. Through this method, the intermittent counterclockwise rotation of the four partition plates 26 can be achieved, and the rice seeds can be frequently quantified, and then the rice seeds can be quantitatively delivered, and the rice seeds can be quantitatively delivered into the multiple sowing branch pipes 54; (10) As the seeding box 2 moves, the connecting gear 57 gradually meshes with the multiple short racks on the segmented rack plate 61. When the connecting gear 57 meshes with the short racks, the thrust of the seeding box 2 and the meshing of the short racks drive the connecting gear 57 and the movable rod 56 to rotate, so that the multiple connecting ropes 58 can be reeled up by the rotation of the movable rod 56, and the multiple seeding plates 59 can be pulled to move, so that the multiple telescopic springs 60 are in a compressed state. When the multiple seeding plates 59 move, the multiple seeding branch pipes 54 can be opened at the same time, so that the rice seeds inside the multiple seeding branch pipes 54 will be When the connecting gear 57 is separated from the short rack, the connecting gear 57 will lose its limit, and then the elastic force of the multiple telescopic springs 60 can drive the multiple sowing plates 59 to move, so that the multiple sowing plates 59 can close the multiple sowing branches 54 again, and then the multiple sowing branches 54 can be opened at a fixed distance by this method, so that the rice seeds in the multiple sowing branches 54 can be accurately placed in the multiple planting holes, and the quantitative and timed placement of rice seeds can be completed, so as to avoid the multiple sowing branches 54 being continuously opened and the rice seeds being randomly sown on the seedling tray 6, so as to ensure the effect of rice seed planting; (11) Furthermore, through the above principle, the switching feeding of three different rice seeds in the rice box 3 can be realized. When the rice seeds in the first rice chamber need to be fed, the first connecting pipe can be automatically opened, the first square pipe can be automatically closed, the sowing pipe 53 can be automatically opened, and the recovery pipe 51 can be automatically closed, so that the rice seeds in the first rice chamber can be put into the sowing box 2, the sowing pipe 53 and the inner sides of the multiple sowing branch pipes 54 in turn for sowing processing. When the rice seeds in the second rice chamber need to be fed, the second connecting pipe can be automatically opened, the second square pipe can be automatically closed, the sowing pipe 53 can be automatically opened, and the recovery pipe 51 can be automatically closed, so that the rice seeds in the first rice chamber can be put into the sowing box 2, the sowing pipe 53 and the inner sides of the multiple sowing branch pipes 54 in turn for sowing processing. When the rice seeds in the third rice chamber need to be fed, the third connecting pipe can be automatically opened, the third square pipe can be automatically closed, the sowing pipe 53 can be automatically opened, and the recovery pipe 51 can be automatically closed, so that the rice seeds in the third rice chamber can be put into the sowing box 2, the sowing pipe 53 and the inner sides of the multiple sowing branch pipes 54 in turn for sowing processing. The rice seeds are placed in the inner sides of the sowing box 2, the sowing pipe 53 and the multiple sowing branch pipes 54 in sequence for sowing processing. At the same time, when it is necessary to switch the feeding of the rice seeds inside the sowing box 2, the connecting pipe 4 can be automatically closed, the connecting pipe 16 can be automatically opened, the sowing pipe 53 can be automatically closed, and the recovery pipe 51 can be automatically opened, thereby automatically preventing the rice box 3 from continuing to put rice seeds into the sowing box 2. The rice seeds in the sowing box 2 will flow into the feeding box 49 through the recovery pipe 51, and then through the transmission of the spiral fan blades 48, the rice seeds in the feeding box 49 can be placed into the inner side of the recovery box 5 through the fixed pipe 50, and at the same time, they can be placed into the designated rice cavity in the rice box 3 according to the corresponding opened connecting pipe 16, so as to realize the recovery of the designated variety of rice seeds, and the rice seeds that have not been sown in the sowing box 2 are transmitted and recovered. At the same time, the above method can continue to put rice seeds of other varieties into the inner side of the sowing box 2, so as to prevent rice seeds of different varieties from being mixed together, and realize the switching sowing of rice seeds of different varieties.

[0041] Compared with the prior art, the overall structure is simple and easy to use, and the purpose of switching sowing of multiple rice seeds is achieved. Multiple rice seeds can be sown in sequence, and different rice seeds can be avoided from being mixed together. When switching sowing, there is no need to pour out the rice seeds that have not been sown in the sowing device, and the rice seeds that have not been sown can be directly transferred to the designated position, which saves time and effort. There is no need to constantly replace different varieties of rice seeds in the sowing device, which ensures the efficiency of the sowing device for sowing multiple rice seeds and meets the actual sowing needs. This method can effectively avoid confusion of rice seeds of different varieties. When conducting disease resistance detection and cultivation, the influence of different soils on the disease resistance of varieties can be reflected, and the results of disease resistance detection can be guaranteed.

[0042] Embodiment 2:

[0043] The present application also discloses a sowing method for identifying the disease resistance of rice varieties at the seedling stage. The sowing device for identifying the disease resistance of rice varieties at the seedling stage according to the first embodiment includes the following steps: S1. The translation member can sequentially drive the sowing box 2, the rice box 3, the recycling box 5 and the multiple sowing branch pipes 54 to translate above the long board 1. When the sowing box 2 is about to approach the first breeding tray, the second breeding tray or the third breeding tray, the first vertical rod 37, the second vertical rod 38 and the third vertical rod 39 will fit with the corresponding wedge switches 13 respectively. The thrust of the movement of the sowing box 2 and the corresponding annular spring 11, the corresponding connecting rod 14, the corresponding clamping groove, the movable plate 9 and the connection between the spiral spring 8 can make the corresponding baffle plate 15 move, so that the opening hole on the corresponding opening plate 12 is connected with the corresponding connecting pipe 4, and the corresponding baffle plate 15 and the corresponding connecting pipe 16 are closed, so that the rice seeds in the three rice cavities can flow into the inner side of the sowing box 2 through the connecting pipe 4 respectively, and the rice seeds of the specified variety can be sown in the sowing box 2. S2. When the sowing box 2 is about to move from the first cultivation tray to the second cultivation tray, from the second cultivation tray to the third cultivation tray, from the third cultivation tray to the second cultivation tray, from the second cultivation tray to the first cultivation tray or from the first cultivation tray, the corresponding fourth upright rod 40 will fit with the neutral switch 24, and the thrust of the movement of the sowing box 2 can move the fixed rod 10 into the neutral groove, which can push the movable plate 9 to move, and at the same time, with the elastic force of the spiral spring 8, the connecting rod 14 clamped in the clamping groove can be moved out, and the corresponding annular spring 11 can be relaxed The elastic force can drive the opening plate 12, the wedge switch 13, the connecting rod 14 and the baffle plate 15 to move in turn, so that the corresponding connecting pipe 4 is closed, and the corresponding baffle plate 15 and the corresponding connecting pipe 16 are opened, and the delivery of the current variety of rice seeds is temporarily stopped, and the rice seeds that have not been sown in the sowing box 2 are first transmitted and recovered; S3. When the wedge switch 13 moves, the wedge cone block 23 is also driven to move, and the limit spring 22 and the fixing rope 18 can drive the switching plate 17 to move horizontally, so that the recovery pipe 51 and the sowing pipe 53 are switched on and off. When the connecting pipe 4 is opened, the recovery pipe 51 is closed and the sowing pipe 53 is opened, so that when the rice box 3 throws rice seeds into the sowing box 2, the rice seeds smoothly fall into the sowing pipe 53 for uniform sowing in the subsequent sequence. When the connecting pipe 4 is closed, the recovery pipe 51 is opened and the sowing pipe 53 is closed, and the excess rice seeds in the sowing box 2 will flow into the recovery pipe 51, so that the unsown rice seeds can be recovered; S4. The rice seeds in the recovery tube 51 can be transferred to the recovery box 5 through the recovery component, and can be placed in the designated rice cavity according to the corresponding opened connecting tube 16, so as to realize the recovery of designated varieties of rice seeds. When the connecting tube 4 puts the rice seeds into the sowing box 2, the rice seeds will fall on the shaking plate 31. The shaking component can make the rice seeds evenly dispersed on the shaking plate 31 and fall into the gap between the two partition plates 26. The quantitative component can frequently quantify the rice seeds, and then quantitatively release the rice seeds. The rice seeds can be quantitatively released into multiple sowing branches 54. The sowing component can open the multiple sowing branches 54 at a fixed distance, and the rice seeds in the multiple sowing branches 54 can be accurately released into the multiple planting holes of the seedling tray 6, so as to complete the quantitative and timed release of rice seeds.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sowing device for identifying disease resistance of rice varieties at the seedling stage, characterized in that: The invention comprises a long board (1), three seedling raising trays (6) fixed on the long board (1), a sowing box (2) arranged on the long board (1), a rice box (3) and a recovery box (5) arranged above the sowing box (2), and three connecting pipes (4) connected to the rice box (3), wherein the three seedling raising trays (6) are respectively a first sowing tray, a second sowing tray and a third sowing tray, three rice cavities are arranged on the inner side of the rice box (3), and a translation member for driving the sowing box (2) to translate is arranged on the long board (1); The sowing box (2) is provided with a switching component for switching on and off the three connecting pipes (4), and the three connecting pipes (4) are respectively connected to the three rice chambers; The sowing box (2) is provided with a processing mechanism for shaking, dosing, recovering and sowing rice seeds, and the processing mechanism comprises a shaking component, a dosing component, a recovering component and a sowing component; The switching assembly comprises opening plates (12) movably arranged on the three connecting pipes (4) respectively, and a sliding member used for slidingly driving the three opening plates (12); The shaking assembly comprises a shaking plate (31) movably arranged inside the seed box (2) and a shaking member used for shaking and driving the shaking plate (31); The quantitative assembly comprises four partition plates (26) rotatably arranged in the seeding box (2) and a limiting member used for limiting the rotation of the four partition plates (26); The recovery component comprises a feed box (49) and a recovery pipe (51) fixed to the seed box (2), a spiral blade (48) rotatably arranged in the feed box (49), and a rotating member for driving the spiral blade (48) to rotate; The sowing assembly comprises a sowing tube (53) fixed on the sowing box (2), a plurality of sowing branch tubes (54) fixed on the sowing tube (53), sowing plates (59) movably arranged on the plurality of sowing tubes (53), a driving member for driving the plurality of sowing plates (59) to translate, and a switching member for switching the recovery tube (51) and the sowing tube (53) to open and close, wherein the switching member is driven by a sliding member; The rotating member comprises a movable gear (45) arranged on the spiral blade (48) and a lifting member used for lifting and lowering the movable gear (45); The recovery box (5) is provided with connecting pipes (16) respectively connected to the three rice chambers and material baffles (15) respectively movably arranged on the three connecting pipes (16), and the three material baffles (15) are driven for translation by sliding members.

2. A sowing device for identifying disease resistance of rice varieties at seedling stage according to claim 1, characterized in that: The sliding member comprises a support frame (7) fixed on the connecting pipe (4), a coil spring (8) fixed on the support frame (7), a movable plate (9) fixed on the coil spring (8), a wedge switch (13) respectively fixed on three opening plates (12), a neutral switch (24) movably arranged on the support frame (7), a fixed rod (10) fixed on the neutral switch (24), four annular springs (11) fixed on the seeding box (2), and two first vertical rods (37), two second vertical rods (38), two third vertical rods (39) and four fourth vertical rods (40) fixed on the long strip plate (1), the four annular springs (11) respectively connected to the three wedge switches (13) and the neutral switch (24). The movable plate (9) is fixedly connected, three engaging grooves and a neutral groove are provided on the inner side of the movable plate (9), the three engaging grooves are respectively engaged with the three wedge-shaped switches (13), the neutral switch (24) is slidably connected with the neutral groove, the four fourth vertical rods (40) are all movably fitted with the neutral switch (24), the three wedge-shaped switches (13) are respectively the first switch, the second switch and the third switch, the two first vertical rods (37) are all movably fitted with the first switch, the two second vertical rods (38) are all movably fitted with the second switch, the two third vertical rods (39) are all movably fitted with the third switch, and the three opening plates (12) are each provided with an opening hole on the inner side, and the three opening holes are respectively movably connected with the three connecting pipes (4).

3. A sowing device for identifying disease resistance of rice varieties at seedling stage according to claim 2, characterized in that: The switching member comprises a switching plate (17) movably arranged in the seed box (2), a fixing frame (21) fixed on the seed box (2), a limiting ring (20) and two fixed pulleys (19), a wedge-shaped cone block (23) movably arranged on the fixing frame (21), a limiting spring (22) fixed on the wedge-shaped cone block (23), and a fixing rope (18) fixed on the wedge-shaped cone block (23), one end of the fixing rope (18) being fixedly connected to the switching plate (17). The two fixed pulleys (19) and the limit ring (20) are both slidably connected to the fixed rope (18), the limit spring (22) is fixedly connected to the fixed frame (21), the three wedge switches (13) are movably fitted with the inclined surface of the wedge cone block (23), the openings of the recovery pipe (51) and the sowing pipe (53) are movably fitted with the switching plate (17), and the switching plate (17) is provided with a feed hole, which is movably fitted with the sowing pipe (53).

4. A sowing device for identifying disease resistance of rice varieties at seedling stage according to claim 1, characterized in that: The rotating member comprises a fixed pipe (50) fixed on the recovery box (5), the fixed pipe (50) and the recovery pipe (51) are both connected to the material conveying box (49), and the fixed pipe (50) is connected to the recovery box (5); The lifting member comprises an adjusting block (46) fixed on a movable gear (45), two tension springs (47) fixed on the adjusting block (46), a limiting arc block (52) respectively fixed on the two tension springs (47), and a first wedge block (43), a second wedge block (44), a first rack (41) and a second rack (42) fixed on the long strip plate (1), the first rack (41) and the second rack (42) both being movably meshed with the movable gear (45), the first wedge block (43) and the second wedge block (44) both being movably fitted with the adjusting block (46), and an arc-shaped slot being provided on the inner side of the spiral blade (48), the arc-shaped slot being provided in two groups, the arc-shaped slots being provided in each group being provided in two groups, and the two arc-shaped slots in each group being movably engaged with the two limiting arc blocks (52) respectively.

5. The sowing device for identifying disease resistance of rice varieties at seedling stage according to claim 1, characterized in that: The driving member comprises a connecting frame (55) fixed on the sowing tube (53), a plurality of telescopic springs (60) fixed on the connecting frame (55), a connecting gear (57) rotatably arranged on the connecting frame (55), a movable rod (56) fixed on the connecting gear (57), a plurality of connecting ropes (58) fixed on the connecting frame (55), and a segmented rack plate (61) fixed on the long strip plate (1), one end of each of the plurality of connecting ropes (58) being arranged on the movable rod (56), each of the plurality of connecting ropes (58) being wound around the movable rod (56), and each of the plurality of sowing plates (51) being arranged on the long strip plate (1). 9) are respectively fixedly connected to a plurality of telescopic springs (60), the other ends of the plurality of connecting ropes (58) are respectively fixedly connected to a plurality of sowing plates (59), the segmented rack plate (61) is provided with evenly arranged short racks, the plurality of short racks are all movably engaged with the connecting gear (57), the inner sides of the plurality of sowing branch pipes (54) are each provided with a first square hole, the plurality of sowing plates (59) are respectively slidably connected to the plurality of first square holes, the plurality of sowing branch pipes (54) are each located directly above the seedling tray (6), and the plurality of sowing branch pipes (54) are each connected to the sowing pipe (53).

6. The sowing device for identifying disease resistance of rice varieties at the seedling stage according to claim 1, characterized in that: The shaking member comprises a shaking rod (33) and two compression springs (32) fixed on a shaking plate (31), a transmission gear (34) and a cam block (35) rotatably arranged on the seeding box (2), and a support rack (36) fixed on the long strip plate (1), wherein the transmission gear (34) and the cam block (35) are coaxially fixed, the transmission gear (34) and the support rack (36) are movably engaged, the cam block (35) and the shaking rod (33) are movably connected, the two compression springs (32) are fixedly connected to the seeding box (2), the inner side of the seeding box (2) is provided with a long strip hole, the shaking rod (33) is slidably connected to the long strip hole, the inner side of the shaking plate (31) is provided with evenly distributed dispersion holes, and the inner side of the shaking plate (31) is provided with a feeding long hole.

7. The sowing device for identifying disease resistance of rice varieties at seedling stage according to claim 3, characterized in that: The limiting member comprises a support rod (25) rotatably arranged in the seeding box (2), a limiting plate (30) fixed on the switching plate (17), and two one-way bearings (27) fixed on the outside of the support rod (25); the four partition plates (26) are all arranged on the outside of the support rod (25); the four partition plates (26) are arranged at equal distances on the outside of the support rod (25); the outsides of the four partition plates (26) are all provided with connecting springs (28); the outsides of the four connecting springs (28) are all provided with limiting blocks (29); the four limiting blocks (29) are all movably fitted with the limiting plate (30); the partition plate (26) is located directly below the shaking plate (31); and the two one-way bearings (27) are fixedly connected to the seeding box (2).

8. The sowing device for identifying disease resistance of rice varieties at seedling stage according to claim 1, characterized in that: The translation member comprises a threaded rod (63) rotatably arranged on the long strip (1), a threaded block (64) fixed on the seeding box (2), and a motor (62) fixed on the long strip (1); the threaded rod (63) is fixedly connected to the output shaft of the motor (62), and the threaded rod (63) is threadedly connected to the threaded block (64).

9. The sowing device for identifying disease resistance of rice varieties at seedling stage according to claim 2, characterized in that: The three connecting pipes (16) are all connected to the recovery box (5), the three material blocking plates (15) are all provided with connecting rods (14), the three connecting rods (14) are respectively fixedly connected to the three wedge switches (13), the support frame (7) is provided with three fixed sliding holes, the three connecting rods (14) are respectively slidably connected to the three fixed sliding holes.

10. A sowing method for identifying disease resistance of rice varieties at the seedling stage, based on the sowing device for identifying disease resistance of rice varieties at the seedling stage as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The translation member can sequentially drive the sowing box (2), the rice box (3), the recycling box (5) and the plurality of sowing branch pipes (54) to translate above the long strip (1). When the sowing box (2) is about to approach the first cultivation tray, the second cultivation tray or the third cultivation tray, the first vertical rod (37), the second vertical rod (38) and the third vertical rod (39) will fit with the corresponding wedge switches (13) respectively. The thrust of the movement of the sowing box (2) cooperates with the connection between the corresponding annular spring (11), the corresponding connecting rod (14), the corresponding clamping groove, the movable plate (9) and the spiral spring (8), so that the corresponding baffle plate (15) can move, so that the opening hole on the corresponding opening plate (12) is connected with the corresponding connecting pipe (4), and the corresponding baffle plate (15) and the corresponding connecting pipe (16) are closed, so that the rice seeds in the three rice cavities can flow into the inner side of the sowing box (2) through the connecting pipe (4), and the rice seeds of the specified variety can be sown in the sowing box (2); S2. When the seeding box (2) is about to move from the first seeding tray to the second seeding tray, from the second seeding tray to the third seeding tray, from the third seeding tray to the second seeding tray, from the second seeding tray to the first seeding tray, or from the first seeding tray, the corresponding fourth vertical rod (40) will fit with the neutral switch (24), and the thrust of the seeding box (2) can move the fixed rod (10) into the neutral groove, and can push the movable plate (9) to move, and at the same time cooperate with the elastic force of the coil spring (8), The connecting rod (14) engaged in the engaging groove can be removed, and the corresponding annular spring (11) can be released to sequentially drive the opening plate (12), the wedge switch (13), the connecting rod (14) and the blocking plate (15) to move, so that the corresponding connecting pipe (4) is closed, the corresponding blocking plate (15) and the corresponding connecting pipe (16) are opened, and the placement of the current variety of rice seeds is temporarily stopped, and the unsown rice seeds in the sowing box (2) are first transmitted and recovered; S3. When the wedge-shaped switch (13) moves, the wedge-shaped cone block (23) will also move, and the limit spring (22) and the fixing rope (18) can drive the switching plate (17) to move horizontally, so that the recovery pipe (51) and the sowing pipe (53) are switched on and off. When the connecting pipe (4) is opened, the recovery pipe (51) is closed and the sowing pipe (53) is opened, so that when the rice box (3) throws rice seeds into the sowing box (2), the rice seeds smoothly fall into the sowing pipe (53) to facilitate uniform sowing in the subsequent sequence. When the connecting pipe (4) is closed, the recovery pipe (51) is opened and the sowing pipe (53) is closed, and the excess rice seeds in the sowing box (2) will flow into the recovery pipe (51), and the rice seeds that have not been sown can be recovered; S4. The rice seeds in the recovery tube (51) can be transferred to the recovery box (5) through the recovery component, and can be placed in the designated rice cavity according to the corresponding opened connection tube (16), so as to realize the recovery of the designated variety of rice seeds. When the connecting tube (4) puts the rice seeds into the sowing box (2), the rice seeds will fall on the shaking plate (31). The shaking component can make the rice seeds evenly dispersed on the shaking plate (31) and fall into the gap between the two partition plates (26). The quantitative component can frequently quantify the rice seeds, and then quantitatively put the rice seeds. The rice seeds can be quantitatively put into multiple sowing branches (54). The sowing component can open the multiple sowing branches (54) at a fixed distance, and the rice seeds in the multiple sowing branches (54) can be accurately put into the multiple planting holes of the seedling tray (6), so as to complete the quantitative and timed release of rice seeds.

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