A rice planthopper observation device

Abstract

The utility model discloses a rice planthopper observation device, including culture subassembly, with at least two independent culture tank, observation pipe subassembly is connected in culture subassembly, observation pipe subassembly has the closed space, and both ends have the pass -through seedling passageway of corresponding culture tank, to make the need observation of the stem part of the rice seedling can pass through observation pipe subassembly by the pass -through seedling passageway of corresponding. Through this scheme, the difference of the attraction of the rice seedling of multiple different fertility conditions can be observed to the rice planthopper, and then in the rice planthopper prevention and treatment process, the best land fertility is selected to reduce the harm of the rice planthopper to crops.

Description

Technical Field

[0001] This utility model relates to testing devices, and in particular to a device for observing rice planthoppers. Background Technology

[0002] Rice planthoppers (brown planthopper, white-backed planthopper, and gray planthopper) are the most significant pests of rice. In my country, rice planthopper infestations are primarily caused by brown planthoppers, affecting approximately 400 million mu (66.7 million hectares) annually and causing millions of tons of yield loss, seriously threatening food security. In rice production practices, nitrogen fertilizer is a crucial factor influencing brown planthopper population changes. For example, under high nitrogen fertilizer treatment, the parasitic wasps on rice varieties 'IR62' (resistant to brown planthoppers) showed a decreased ability to parasitize brown planthoppers, indicating that natural enemy control under high nitrogen fertilizer conditions compensates for the fitness cost of resistant varieties; it also suggests that low nitrogen fertilizer benefits natural enemies. While high nitrogen fertilizer application reduces rice resistance to brown planthoppers, there are also reports of increased tolerance and decreased brown planthopper populations. This indicates that the effects of high nitrogen on brown planthoppers are also related to rice varieties.

[0003] Research has revealed that soil fertility levels during rice cultivation significantly influence rice's attractiveness to rice planthoppers. This leads researchers to conclude that adjusting soil fertility to reduce planthopper damage is a viable approach. However, the lack of a dedicated device for studying this research and observing planthopper diseases hinders data collection. Given the complex relationship between nitrogen fertilizer, rice variety, brown planthopper, and natural enemies, the diversity of rice varieties makes the relationships among the first three factors particularly intricate. Based on local rice production practices and excluding complex field conditions, a suitable experimental device is urgently needed to quantify the relationship between locally grown rice varieties and brown planthoppers under different nitrogen fertilizer conditions. Utility Model Content

[0004] The purpose of this invention is to provide a rice planthopper observation device, which can facilitate the observation of the effects of rice planted under different fertility conditions on rice planthoppers.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rice planthopper observation device, including

[0007] The culture assembly has at least two independent culture tanks;

[0008] An observation tube assembly is connected to the culture assembly. The observation tube assembly has a closed space and seedling passages at both ends corresponding to the culture troughs, so that the stalks of the seedlings to be observed can pass through the corresponding seedling passages of the observation tube assembly.

[0009] Preferably, the culture assembly includes a culture dish, which has at least two sets of partition slots, and partition plates are sealed in the partition slots to divide the space of the culture dish into at least two sets of culture tanks in a fan shape.

[0010] Preferably, the observation tube assembly includes a connecting tube, an observation tube, and two sealing plugs. The lower end of the observation tube is sleeved on the connecting tube. The bottom of the connecting tube is provided with multiple sets of support spokes extending parallel to the dividing groove. One sealing plug is mounted on the spokes, and the other sealing plug is placed on the upper end of the observation tube. Several dividing lines are radially formed on the sealing plug. The inner end of the dividing lines is connected to the seedling channel, and the dividing lines are located in the middle of two adjacent sealing plates.

[0011] Preferably, the sealing plug is provided with a sealing sheet, one side of which is connected to the sealing plug and the other side extends horizontally to block the dividing line and the seedling channel.

[0012] Preferably, it also includes a light-shielding box, and a support plate is provided on the outside of the connecting pipe, with the support plate mounted on the light-shielding box.

[0013] Preferably, one side of the light-shielding box is also hinged with several light-shielding plates of the same width as the support plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are: through the above structure, multiple rice seedlings can be planted in culture dishes with different fertility levels of culture solution (culture soil), and then these rice seedlings and rice planthoppers for observation can be sealed in a space using an observation tube assembly to observe the difference in attractiveness of rice seedlings growing under different fertility conditions to rice planthoppers, thereby obtaining accurate data on the impact of fertility on rice planthopper damage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of this utility model;

[0017] Figure 3 yes Figure 1 A longitudinal sectional view;

[0018] Figure 4 yes Figure 1 A cross-sectional view.

[0019] Figure reference numerals: 1. Culture component; 11. Culture dish; 111. Slot; 12. Divider plate; 2. Observation tube assembly; 21. Connecting tube; 211. Spoke; 22. Observation tube; 23. Sealing plug; 231. Seedling channel; 232. Dividing line; 24. Sealing sheet; 25. Support plate; 3. Light-shielding box; 4. Light-shielding plate. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1-4 The rice planthopper observation device shown includes a cultivation component 1 and an observation tube component 2. The cultivation component 1 has at least two cultivation tanks for holding nutrients such as nutrient solutions or potting soil with different fertility levels, so as to cultivate multiple rice seedlings under different fertility conditions.

[0024] The observation tube assembly 2 has a transparent, sealed space with seedling-passing channels 231 at both ends, allowing the stems of rice seedlings, one of the experimental subjects, to pass through. It's important to note that the observation tube assembly 2 in this design has a transparent tubular structure in the middle, providing space for cultivating and observing rice planthoppers after the seedling stems pass through. Furthermore, the seedling-passing channels 231 are positioned in the center of the cultivation trough to ensure the seedlings are planted in a relatively upright position.

[0025] Based on the above embodiments, preferably, the culture assembly 1 specifically includes a culture dish 11, which has at least two sets of dividing slots 111 disposed in the middle. Two dividing slots 111, one inside and one outside, form a set, and the line connecting the dividing slots in a set extends radially along the culture dish. A dividing plate 12 is also sealed and inserted into a set of dividing slots 111 to divide the space of the culture dish into at least two independent culture tanks. It should be known that, as Figure 2 As shown, six partition plates 12 are used to divide the soil into six independent culture tanks, allowing observation of rice seedlings growing under six different fertility conditions to obtain data on the attraction of different fertility levels to rice planthoppers. It should also be noted that in actual research, the required number of partition plates 12 can be inserted to create the desired number of culture tanks.

[0026] Based on the above embodiments, preferably, the observation tube assembly 2 specifically includes a connecting tube 21, an observation tube 22, and two sealing plugs 23. The lower end of the observation tube is detachably connected to the culture dish 11 in the culture assembly 1 via a snap-fit, while the upper end of the connecting tube 21 is detachably connected to the observation tube 22 via a sleeve. Furthermore, the sealing plugs 23 are respectively disposed at both ends of the observation tube 22, making the internal space of the observation tube 22 a closed space capable of confining the rice planthopper. It should be noted that, to ensure the activity of the rice planthopper in the closed space, the sealing plugs in this solution are made of porous material, ensuring airflow between the closed space and the external environment while preventing the rice planthopper from escaping. In addition, to facilitate the planting of seedlings and the passage of the seedling stems through the observation tube, the lower sealing plug 23 in this solution is mounted on spokes 211 arranged in a spoke-like pattern inside the connecting tube 21, while the upper sealing plug is placed at the upper end of the observation tube. Furthermore, to facilitate the passage of seedling stems through the two sealing plugs, the sealing plugs 23 are provided with a number of dividing lines 232 that correspond to the maximum number of culture troughs that can be separated. These dividing lines radiate outwards in a radial pattern, and the inner ends of the dividing lines 232 connect to the seedling passages 231 on the sealing plugs. This allows the seedling stems to pass through the divided lines into the seedling passages when they need to pass through the sealing plugs, preventing damage to the seedlings.

[0027] Furthermore, it should be noted that, to ensure the airtightness of the observation tube assembly, the diameter of the seedling channel 231 is typically slightly smaller than the diameter of the seedling stem. This makes the dividing line section prone to being stretched open and cracking. To prevent rice planthoppers from escaping through these cracks and causing inaccurate experimental results, a sealing sheet 24 is also provided on the sealing plug 23. This sealing sheet is made of a soft and thin film. One side of the film is fixedly connected to the sealing plug 23, while the other side is a movable end that extends into the surface of the sealing plug to seal the dividing line 232 and the seedling channel 231. When the dividing line is stretched open by the seedling, its upper part will be sealed by the dividing line 232, ensuring the overall airtightness of the observation tube assembly.

[0028] Additionally, it should be noted that if soil is used as the culture medium during the research, the roots are located in a dark space, and the growth of the seedlings closely resembles their natural state. However, if a culture medium is used, both the medium and the culture dish are transparent, and the roots of the seedlings are exposed to sunlight for extended periods, inevitably differing from the natural growth environment. To simulate the seedling growth environment as closely as possible, this design also includes a light-shielding box 3, in which the culture dish can be placed. Furthermore, a support plate 25, made of light-shielding material, is installed outside the connecting pipe 21. When the culture dish is placed in the light-shielding box 3, the support plate rests on the light-shielding box 3 to block sunlight as much as possible, preventing direct sunlight from reaching the roots of the seedlings in the culture dish.

[0029] Furthermore, it's important to understand that during the experiment, the number of experimental groups may not be sufficient to completely seal the light-shielding box. In such cases, gaps may appear, allowing sunlight to enter from the side. To prevent this, several support plates 4 are hinged to one side of the light-shielding box. The number of these support plates is equal to the maximum number of support plates 25 that the light-shielding box can hold, and their width is also compatible. When gaps appear, the light-shielding plates 4 can be flipped up to prevent sunlight from entering through these gaps in the light-shielding box.

[0030] Working Principle: When conducting research on the effects of rice seedlings on rice planthoppers under different fertility conditions, the staff first inserts a separator plate 12 into the culture dish 11 to divide the dish into the required number of culture troughs. Then, culture solutions or potting soils with different fertility levels are added to the culture troughs. Next, the culture dish is connected to the connecting tube 21. Then, a corresponding number of rice seedlings with similar biological characteristics are planted into the corresponding culture troughs. Next, a sealing plug 23 is taken, and the dividing lines 232 are broken open one by one to insert the stem of the seedling into the seedling insertion channel 231. Then, the sealing plug is pushed down to abut against the spokes 211 of the connecting tube. After the above work is completed, the observation tube is fitted over the outside of the seedling stem and onto the connecting tube, achieving a seal at the bottom of the observation tube. Then, another sealing plug is taken out, and the above operation of inserting the seedling into the sealing plug is repeated, before the sealing plug is pushed down to the top of the observation tube. At this point, the upper and lower ends of the observation tube are sealed, forming a sealed space. Once the above steps are completed, the observation tube assembly can be placed in a light-shielding box to simulate a light-free root growth environment. Finally, open a small slit in the upper sealing plug to insert the rice planthopper to be studied into the observation tube.

[0031] It should be noted that in some embodiments, the sealing plug does not have a dividing line. In this case, the seedlings can be passed through the seedling channel by wrapping the roots of the seedlings with a broken tube before passing them through the seedling channel, in order to avoid damage to the seedlings.

[0032] In addition, the sealing plugs in this solution are made of breathable foam material to prevent rice planthoppers from dying due to insufficient oxygen supply.

[0033] This method allows us to observe the differences in the attractiveness of rice seedlings under different fertility conditions to rice planthoppers, and thus select the optimal soil fertility during the rice planthopper prevention process to reduce the damage caused by rice planthoppers to crops.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for observing rice planthoppers, characterized in that: include The culture component (1) has at least two independent culture tanks; The observation tube assembly (2) is connected to the culture assembly (1). The observation tube assembly (2) has a closed space and seedling outlet channels (231) corresponding to the culture tank at both ends, so that the stalk of the seedling to be observed can pass through the observation tube assembly (2) through the corresponding seedling outlet channel (231). The culture assembly (1) includes a culture dish (11) with at least two sets of partition slots (111) provided therein. A partition plate (12) is sealed in the partition slot (111) to divide the space of the culture dish (11) into at least two sets of culture tanks in a fan shape.

2. The rice planthopper observation device as described in claim 1, characterized in that: The observation tube assembly (2) includes a connecting tube (21), an observation tube (22), and two sealing plugs (23). The lower end of the observation tube (22) is fitted onto the connecting tube (21). The bottom of the connecting tube (21) is provided with multiple sets of support spokes (211) extending parallel to the dividing slot (111). One sealing plug (23) is mounted on the spoke (211), and the other sealing plug (23) is placed on the upper end of the observation tube (22). Several dividing lines (232) are radially opened on the sealing plug (23). The inner end of the dividing line (232) is connected to the seedling channel (231). The dividing line (232) is located in the middle of two adjacent dividing plates (12).

3. The rice planthopper observation device as described in claim 2, characterized in that: A sealing sheet (24) is provided on the sealing plug (23). One side of the sealing sheet (24) is connected to the sealing plug (23), and the other side extends horizontally to block the dividing line (232) and the seedling channel (231).

4. The rice planthopper observation device as described in claim 3, characterized in that: It also includes a light-shielding box (3), and a support plate (25) is provided on the outside of the connecting pipe (21), and the support plate (25) is mounted on the light-shielding box (3).

5. The rice planthopper observation device as described in claim 4, characterized in that: Several light-shielding plates (4) with the same width as the support plate (25) are also hinged to one side of the light-shielding box (3).

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