Breeding device for breeding drought-tolerant rice cultivation environment

Abstract

The utility model discloses a cultivating device with drought -resistant rice cultivation environment, including the box, its inside is separated into the soil layer and observation layer of up and down alternate arrangement through multilayer horizontal baffle. The capillary water supply strip of independent water source container and electric valve control is buried in the soil layer, can accurate control each layer humidity, forms the moisture gradient from top to bottom. The observation layer side wall is equipped with transparent observation board, and the root system form is convenient for in situ observation. The top transparent isolation cover is built -in growth lamp, simulates natural light. The scheme simulated the vertical drought gradient environment of field soil, and the inside is separated into the soil layer and observation layer of up and down alternate arrangement through multilayer horizontal baffle, and the capillary water supply strip of independent water source container and electric valve control is buried in the soil layer, realized the independent accurate control of each layer soil humidity, can create a moisture content layer -by -layer increasing stable gradient from top to bottom, provides a controllable water -seeking growth environment for rice root system.

Description

Technical Field

[0001] This utility model relates to the field of rice cultivation technology, specifically to a cultivation device with a drought-resistant rice cultivation environment. Background Technology

[0002] Studies on rice drought tolerance typically rely on traditional pot experiments or large artificial climate chambers. While these methods can control overall environmental conditions such as light, temperature, and humidity, they are significantly inadequate in simulating the non-uniform soil moisture environment of the field. Soil moisture distribution in the field is not homogeneous, especially under drought conditions, naturally forming a vertical gradient of increasing moisture from top to bottom. This gradient environment is a key stress factor driving rice roots to penetrate deeper in search of water. Existing cultivation devices generally employ methods such as top irrigation or bottom watering, making it difficult to create this continuous, stable, and precisely controllable moisture gradient within the root growth space. This results in significant differences between the laboratory cultivation environment and real field conditions, hindering the effective stimulation and study of deep root adaptive responses in rice.

[0003] Furthermore, existing technologies have blind spots in observing root growth processes. Traditional cultivation containers are usually opaque or have only a single observation window, preventing researchers from observing in situ, continuously, and intuitively the dynamic growth morphology, biomass distribution, and depth of rice roots in response to different water conditions. Obtaining root data often relies on destructive sampling, i.e., removing plants from the soil at different growth stages for measurement. This method is not only inefficient but, more seriously, interrupts the continuous growth and development process. The data obtained are only discrete point-in-time information and cannot fully reconstruct the entire dynamic response of the root system to drought stress, thus hindering in-depth research on the drought resistance mechanism of rice and the efficient breeding of superior drought-resistant varieties. Utility Model Content

[0004] The purpose of this invention is to provide a cultivation device with a drought-resistant rice cultivation environment that simulates the vertical drought gradient environment of field soil. The device is divided into alternating soil layers and observation layers by multiple horizontal partitions. Capillary water supply strips controlled by independent water source containers and electric valves are buried in the soil layers, enabling independent and precise control of soil moisture in each layer. This allows researchers to create a stable gradient with progressively increasing moisture content from top to bottom, providing a controllable water-oriented growth environment for rice roots, accurately simulating field drought stress conditions, and solving the problems in the prior art.

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

[0006] A cultivation device for drought-resistant rice includes a vertically arranged box. The box contains multiple horizontal partitions that divide the interior into several vertically arranged cultivation units, which are alternately defined as soil layers and observation layers from top to bottom. Micropores for rice roots to penetrate are provided on the horizontal partitions. Each soil layer contains a capillary water supply strip, each connected to an independent water source container. An electric water valve is installed at the connection point between each capillary water supply strip and the water source container's outlet pipe. A transparent isolation cover is installed on the top of the box, covering the top soil layer, and a growth lamp is installed inside the transparent isolation cover. Temperature and humidity sensors are installed in each soil layer and observation layer. At least one side of the box is a transparent observation panel.

[0007] Preferably, the observation layer has an openable and closable ventilation window on its side wall.

[0008] Preferably, the capillary water supply strip is one of cotton thread, felt strip, or a thin water pipe with micro-holes for water outlet.

[0009] Preferably, the electric water pipe valve is electrically connected to an external monitoring device.

[0010] Preferably, the back or side of the housing is provided with wire holes for threading temperature and humidity sensor circuits and capillary water supply strips.

[0011] Preferably, the micropores on the horizontal partition are uniformly distributed, with a pore diameter ranging from 3mm to 4mm and a spacing between the micropores ranging from 3mm to 5mm.

[0012] Preferably, the total height of the box is between 1m and 1.8m, and the planar dimensions need to provide sufficient cultivation area, with length and width dimensions of 50cm×30cm or 60cm×35cm.

[0013] Preferably, the thickness of the soil layer ranges from 15cm to 30cm, and the thickness of the observation layer ranges from 5cm to 10cm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model effectively simulates the vertical drought gradient environment of field soil through a layered alternating structural design. The device is divided into alternating soil layers and observation layers by multiple horizontal partitions. Capillary water supply strips controlled by independent water source containers and electric valves are buried in the soil layers, realizing independent and precise control of soil moisture in each layer. This allows researchers to create a stable gradient with progressively increasing moisture content from top to bottom, providing a controllable water-oriented growth environment for rice roots, accurately simulating the stress conditions of drought in the field, and thus more effectively screening and cultivating drought-resistant rice varieties.

[0016] 2. In this invention, a hollow observation layer is provided below each soil layer. Its sidewalls are made of transparent material and equipped with openable and closable ventilation windows. As the rice roots search for water sources, they will pass through the micropores on the partition to enter the observation layer. Researchers can directly and continuously observe and record data such as the length, density, and morphology of the roots in each layer without damaging the plant or soil structure, which greatly improves the observation efficiency and data integrity. Attached Figure Description

[0017] Figure 1 This is an isometric view of the overall structure of this utility model;

[0018] Figure 2 This is a front view of the overall structure of this utility model;

[0019] Figure 3 This is a side view of the overall structure of this utility model;

[0020] Figure 4 For the present utility model Figure 1 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Box body; 2. Horizontal partition; 3. Soil layer; 4. Observation layer; 5. Ventilation window; 6. Transparent isolation cover; 7. Capillary water supply strip; 8. Water source container; 9. Electric water pipe valve; 10. Growth lamp; 11. Transparent observation plate; 12. Temperature and humidity sensor; 13. Micropore; 14. Wire hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To address the problem that existing rice cultivation devices cannot effectively simulate the vertical drought gradient in field soil, thus hindering the cultivation and observation of drought-resistant rice growth, the following technical solution is proposed. Please refer to [link / reference]. Figure 1-4 ;

[0024] A cultivation device with a drought-resistant rice cultivation environment includes a vertically arranged box 1 with a total height between 1m and 1.8m. The planar dimensions need to provide sufficient cultivation area, with length and width dimensions of 50cm×30cm or 60cm×35cm. At least one side of the box 1 is provided as a transparent observation plate 11, which can be made of high-strength glass or polycarbonate sheet.

[0025] The box 1 is equipped with multiple horizontal partitions 2. Micropores 13 for rice roots to penetrate are evenly distributed on the horizontal partitions 2. The box 1 is divided into several vertically arranged cultivation units. Each cultivation unit is alternately defined as a soil layer 3 and an observation layer 4 from top to bottom.

[0026] The micropores 13 on the horizontal partition 2 are uniformly distributed, with a pore diameter ranging from 3 mm to 4 mm, and the spacing between the micropores 13 is 3 mm to 5 mm.

[0027] Soil layer 3 is used to fill the cultivation substrate such as soil or nutrient soil. Rice is planted in the top soil layer 3. Capillary water supply strips 7 are buried in the soil of each soil layer 3. The capillary water supply strips 7 can be made of cotton thread, felt strips or thin water pipes with small water outlet holes. Each capillary water supply strip 7 is connected to an independent water source container 8.

[0028] Electric water pipe valves 9 are installed at the connection points of the capillary water supply strip 7 and the water outlet pipe of the water source container 8, which can adjust the water supply rate of each water source container 8 and independently control the substrate moisture of the corresponding soil layer 3, thereby forming a gradient of increasing moisture from top to bottom. The electric water pipe valves 9 are electrically connected to external monitoring equipment.

[0029] The observation layer 4 is located below the soil layer 3. The observation layer 4 is a hollow, sealed cavity used to contain and observe the rice roots that have penetrated through. The height of the observation layer 4 can be designed and adjusted according to the observation needs of different growth stages.

[0030] Each observation layer 4 has an openable ventilation window 5 on its side wall, and can be equipped with a small fan or gas duct interface to independently regulate the air humidity, carbon dioxide concentration and ventilation level in each observation layer 4.

[0031] The thickness of soil layer 3 ranges from 15cm to 30cm, and the thickness of observation layer 4 ranges from 5cm to 10cm.

[0032] A transparent isolation cover 6 is installed on the top of the container 1. The transparent isolation cover 6 covers the top soil layer 3 and the planted rice. A growth light 10 is installed inside the transparent isolation cover 6 to simulate natural light and temperature conditions.

[0033] Temperature and humidity sensors 12 are installed in each soil layer 3 and observation layer 4. The humidity and temperature data of each layer can be transmitted to external monitoring equipment. A wire hole 14 is opened on the back or side of the box 1 for the wiring of the temperature and humidity sensor 12 and the capillary water supply strip 7.

[0034] When using this device, according to the experimental design, nutrient solutions of different concentrations are prepared and injected into each water source container 8. Water is supplied independently to different soil layers 3 through capillary water supply strips 7. The water supply rate of each water source container 8 is adjusted by electric water pipe valves 9, thereby regulating the humidity of each soil layer 3 and forming a stable drought gradient from top to bottom.

[0035] Fill each soil layer 3 with a uniformly formulated cultivation substrate. After planting rice in the top soil layer 3, cover it with a transparent isolation cover 6 and turn on the growth light 10 to simulate a day-night cycle. Open the ventilation window 5 regularly as needed to ventilate the root system.

[0036] During the growth of rice, the roots grow downwards in search of water, passing through the micropores 13 to enter the observation layer 4 below. As the rice grows, the roots continue to penetrate the next soil layer 3. Researchers can directly observe, measure, or photograph and record data such as the length, density, and morphology of the roots in each layer through the transparent observation plate 11, and regularly record the temperature and humidity data from the temperature and humidity sensor 12. Combined with the root phenotypic data, the drought resistance of rice can be comprehensively analyzed.

[0037] Working principle: The multi-layered horizontal partitions 2 inside the box 1 divide the interior into alternating soil layers 3 and observation layers 4. Each soil layer 3 is equipped with a capillary water supply strip 7 that is connected to an independent water source container 8. The water supply rate is precisely controlled by an electric water pipe valve 9. This design allows each soil layer 3 to receive an increasing water supply from top to bottom, thereby forming a humidity gradient with gradually increasing water content in the vertical direction, creating a drought-resistant environment for rice roots to grow in a water-oriented manner.

[0038] Rice plants are planted in the topmost soil layer 3. As they grow, their roots penetrate the micropores 13 on the horizontal partition 2 to find water. The roots then enter the observation layer 4 below, which is a hollow, sealed cavity with transparent observation plates 11 on the side walls. Researchers can directly observe, measure, or record phenotypic data such as root morphology, length, and density. Ventilation windows 5 on the side walls of each observation layer 4 can be used to regulate the local gas environment, such as humidity and carbon dioxide concentration.

[0039] The transparent isolation cover 6 on the top of the enclosure 1, together with the growth lights 10 installed inside, provides controllable light and temperature conditions for the rice plants above ground, simulating a natural growth environment. Temperature and humidity sensors 12 distributed in each layer continuously monitor environmental parameters, and the data is transmitted to external monitoring equipment through lines led out from the wire holes 14.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] 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.

Claims

1. A cultivation device with a drought-resistant rice cultivation environment, comprising a vertically arranged box (1), characterized in that, The box (1) is equipped with multiple horizontal partitions (2) inside, which divide the box (1) into several vertically arranged cultivation units. The cultivation units are alternately defined as soil layer (3) and observation layer (4) from top to bottom. Micropores (13) for rice roots to penetrate are opened on the horizontal partitions (2). Each soil layer (3) is embedded with a capillary water supply strip (7), and each capillary water supply strip (7) is connected to an independent water source container (8). A transparent isolation cover (6) covering the top soil layer (3) is set on the top of the box (1), and a growth lamp (10) is set inside the transparent isolation cover (6). Temperature and humidity sensors (12) are set in each soil layer (3) and observation layer (4). At least one side of the box (1) is set as a transparent observation plate (11).

2. The cultivation device with a drought-resistant rice cultivation environment according to claim 1, characterized in that, The observation layer (4) has an openable ventilation window (5) on its side wall.

3. The cultivation device with a drought-resistant rice cultivation environment according to claim 1, characterized in that, The capillary water supply strip (7) is made of cotton thread, felt strip or a thin water pipe with micro-holes for water outlet.

4. The cultivation device with a drought-resistant rice cultivation environment according to claim 1, characterized in that, Each capillary water supply strip (7) is equipped with an electric water pipe valve (9) at the connection point between the water supply pipe and the water source container (8), and the electric water pipe valve (9) is electrically connected to the external monitoring equipment.

5. The cultivation device with a drought-resistant rice cultivation environment according to claim 1, characterized in that, The back or side of the housing (1) is provided with wire holes (14) for threading the temperature and humidity sensor (12) wires and capillary water supply strips (7).

6. The cultivation device with a drought-resistant rice cultivation environment according to claim 1, characterized in that, The micropores (13) on the horizontal partition (2) are uniformly distributed, with a pore diameter ranging from 3 mm to 4 mm, and the spacing between the micropores (13) is 3 mm to 5 mm.

7. The cultivation device with a drought-resistant rice cultivation environment according to claim 1, characterized in that, The total height of the box (1) is between 1m and 1.8m, and the length and width are 50cm×30cm or 60cm×35cm.

8. The cultivation device with a drought-resistant rice cultivation environment according to claim 1, characterized in that, The thickness of the soil layer (3) ranges from 15cm to 30cm, and the thickness of the observation layer (4) ranges from 5cm to 10cm.

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