CN215898490U - High-flux corn seedling stage drought resistance identification drip irrigation device - Google Patents
High-flux corn seedling stage drought resistance identification drip irrigation device Download PDFInfo
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- CN215898490U CN215898490U CN202121399949.5U CN202121399949U CN215898490U CN 215898490 U CN215898490 U CN 215898490U CN 202121399949 U CN202121399949 U CN 202121399949U CN 215898490 U CN215898490 U CN 215898490U
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- 240000008042 Zea mays Species 0.000 title claims description 34
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Abstract
The utility model discloses a high-flux drip irrigation device for identifying drought resistance of corn in seedling stage, which comprises a seedling box body filled with organic soil, wherein a paper roll seedling system is arranged in the seedling box body, the paper roll seedling system is filled with the organic soil, corn seedlings are planted in the paper roll seedling system, a spongy seepage and suction layer made of spongy material is uniformly laid at the bottom of the seedling box body, drip irrigation pipes are uniformly laid on the spongy seepage and suction layer, and a plurality of water permeable holes are uniformly distributed at the bottom of the paper roll seedling system. The utility model has simple structure, adopts the water seepage system to replace the conventional irrigation, can provide accurate water control for the box body by the drip irrigation system, can simulate the natural soil environment in the box body to form the water content gradient of different soil layers, is more close to the real environment of soil water stress in the actual environment of the field, and can directly plant drought-resistant germplasm resources obtained by screening in the field together with the roll paper seedling culture holes.
Description
Technical Field
The utility model belongs to the technical field of agricultural planting tools, and particularly relates to a high-flux drip irrigation device for identifying drought resistance of corn in a seedling stage.
Background
Drought is one of the important factors that limit the growth and development and yield development of maize. Xinjiang is located in the middle of the continental region of Eurasia, is a typical arid and semi-arid agricultural region in China, has drought and little rain in the crop growth period and rare annual precipitation (about 200mm of precipitation), and is one of the strategies for coping with more frequent and severe drought by breeding excellent corn varieties with strong drought tolerance. The drought resistance identification method and index with high flux, simplicity and high accuracy are needed for creating a corn seed resource with excellent drought resistance, selecting a drought-resistant single plant from the progeny of a segregating group and selecting a drought-resistant corn hybrid combination.
The corn root system is a main organ for absorbing water and nutrients, and is also an organ for firstly sensing the change of the water content of soil. The corn is sensitive to water response, when the water supply is insufficient, the growth speed of the corn root is slowed down, the biomass is reduced, the root cap ratio is increased, the growth speed of the underground part is higher than that of the overground part, because in a drought environment, the corn can redistribute water and nutrient substances, the water and the nutrient substances are preferentially supplied to the root system of the underground part, the normal growth of the root system is ensured, and the foundation is laid for the rapid recovery of the growth in the later drought condition. Drought stress encountered in the seedling stage of the corn can be adjusted by changing the root system structure and the physiological function of the corn so as to adapt to the drought environment to the maximum extent, enhance the restoring capability of the growth of crops after the stress and reduce the influence caused by water loss. Therefore, the root system structure of the corn becomes a research object for identifying the drought resistance of the corn in the seedling stage.
The current main methods for identifying the drought resistance of the corn in the seedling stage comprise a repeated drought method under facility conditions, a field direct identification method, a potted plant simulation drought method, a phytotron and laboratory high-osmotic solution method and the like, wherein the repeated drought method under the facility conditions causes soil drought by controlling the water content of soil, and then researches the influences of growth and development, physiological and biochemical processes and yield under the water stress in different growth periods. Filling organic soil into a seedling box, leveling and compacting, sowing 1 corn seed at a position 4cm away from the soil, watering by a drip irrigation system to reach 80% of relative humidity of the soil, carrying out drought stress after 3-4 leaves, controlling water to reach 30% of relative humidity of the soil, watering to reach maximum water holding capacity after permanent withering, investigating seedling survival rate after 48 hours, then naturally drying and rehydrating, repeatedly drying for 2 times, investigating survival number of stress each time, under the conditions of daily average temperature of 25 ℃ and long sunshine, ensuring that the drought needs about 20 days once, and the whole experiment lasts about 40 days, and evaluating the drought resistance by the average survival rate of 2 investigations. The soil water content needs to be measured before rehydration at every time, the required irrigation amount when the maximum water holding capacity is reached is determined, the uniformity of the soil water is guaranteed, the soil in a box needs to be taken when the soil water content is measured, time and labor are wasted, soil loosening can be caused to affect growth, surface irrigation easily causes soil cracks and uneven watering to affect an identification result, particularly, the number of seedlings surviving in each box is not necessarily equal after drought, some seedlings can even differ by more than 1 time, the irrigation amount is the same, the water supply amount equivalent to each plant is unequal, and the identification result is inaccurate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-flux drip irrigation device for identifying drought resistance of corn in a seedling stage, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the high-flux drip irrigation device for identifying the drought resistance of the corn in the seedling stage comprises a seedling box body filled with organic soil, wherein a roll paper seedling raising system is placed in the seedling box body, the roll paper seedling raising system is filled with the organic soil, and corn seedlings are planted in the roll paper seedling raising system.
Preferably, the sponge matter that the bottom half of growing seedlings evenly laid the sponge matter material oozes the suction layer, the pipe is driped irrigation evenly laid on the sponge matter oozes the suction layer, it is located a plurality of holes of permeating water of the bottom evenly distributed of stock form seedling growing system to drip irrigation the pipe, drip irrigation the upper portion of pipe and still laid one deck sponge matter and ooze the suction layer, the sponge matter oozes and is provided with the support frame of protection and fixed drip irrigation the pipe on the suction layer, one deck absorbent paper is laid on support frame upper portion, the internal absorbent paper upper portion of seedling raising box contains organic soil, it is connected with the piecing devices who is fixed in the bottom half position of growing seedlings to drip irrigation the pipe both ends.
Preferably, stock form seedling growing system is a folding paper device of growing seedlings, stock form seedling growing system forms a plurality of seedling holes, and every seedling hole all is the square, and adjacent seedling hole interconnect, and stock form seedling growing system's horizontal direction is the solid type board of the thick paper preparation of permeating water, and stock form seedling growing system's vertical direction is the collapsible permeable paper of thin to crease in the middle of the accessible is folded and is preserved.
Preferably, the connector device is externally connected with a water inlet pipe, a control valve is installed at the middle upper part of the water inlet pipe, the upper part of the water inlet pipe is communicated with a water storage device, the water storage device is hung on a bracket of the identification system, the top of the identification system is covered with a plastic cloth for protection, and the height of the bracket of the identification system is set to be 1.5-2 m.
Preferably, the side of the seedling raising box body is connected with a puncher, the puncher is the same as the rolled paper seedling raising system after being unfolded, and the puncher is provided with a nail-shaped punching nail in the middle of each seedling raising hole, so that the punching nail can be used for punching soil before sowing and placing corn seeds.
The utility model has the technical effects and advantages that: according to the high-flux drip irrigation device for identifying the drought resistance of the corn in the seedling stage, the conventional top irrigation is replaced by a bottom drip irrigation method, water is slowly released through a bottom drip irrigation belt, the water is uniformly distributed at the bottom of the seedling box by utilizing the water absorption of the imbibition layer, and the water is uniformly diffused into the soil of the whole seedling box under the action of capillary tubes of the soil. The irrigation amount can be accurately adjusted through a control valve on the water inlet pipe each time, the irrigation amount is determined by adjusting the irrigation time, and the method can be applied to drought resistance tests with different water gradients (mild drought stress: 50-60% of the relative humidity of soil, moderate drought stress: 40-50%, severe drought stress 25-35%). The water is transferred from the bottom seepage layer to the top soil, and a water gradient small environment is formed at the bottom of the soil for a long time due to the gravity of the water, which is more similar to the actual planting environment in the field. Cover whole seedling raising box with the rainshelter before raining, other times will be packed up the rainshelter, accept sunshine and shine, are favorable to the reduction of soil moisture, reach quick arid purpose. The drought-resistant corn material obtained by the two-round drought treatment screening can be directly taken out together with the seedling culture hole and directly transplanted into the natural environment of the field.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a sectional view of the seedling raising case of the present invention;
FIG. 3 is a top view of the seedling box of the present invention;
FIG. 4 is a plan view of the rolled paper seedling system of the present invention in an unfolded state;
FIG. 5 is a top view of a piercing pin of the present invention.
In the figure: 1 seedling raising box, 2 stock form seedling raising system, 3 organic soil, 4 maize seedlings, 5 sponge matter infiltration and absorption layers, 6 drip irrigation pipes, 7 support frames, 8 absorbent paper, 9 joint devices, 10 seedling raising holes, 11 thick permeable solid plates, 12 thin foldable permeable paper, 13, puncher panel, 14 punching nails, 15 inlet pipes, 16 control valves, 17 water receiver, 18 rain shelter, 19 permeable holes.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.
In order to be closer to the real environment of soil moisture stress in the actual environment of the field and simultaneously screen and obtain drought-resistant germplasm resources, referring to the figures 1, 2, 3, 4 and 5, the drought-resistant germplasm resource screening device comprises a seedling box body 1 containing organic soil 3, wherein a roll paper seedling system 2 is placed in the seedling box body 1, the interior of the roll paper seedling system 2 is filled with the organic soil 3, the organic soil is selected according to the actual requirement in a customized manner, corn seedlings 4 are planted in the roll paper seedling system 2, a sponge infiltration and absorption layer 5 made of sponge materials is uniformly laid at the bottom of the seedling box body 1, drip irrigation pipes 6 are uniformly laid on the sponge infiltration and absorption layer 5, a plurality of water-permeable holes 19 are uniformly distributed at the bottom of the roll paper seedling system 2 through the drip irrigation pipes 6, a layer 5 made of sponge materials is further laid at the upper part of each drip irrigation pipe 6, and a support frame 7 for protecting and fixing each pipe 6 is arranged on each sponge infiltration and absorption layer 5, one layer of absorbent paper 8 is laid on the upper portion of the support frame 7, the upper portion of the absorbent paper 8 in the seedling box body 1 is filled with organic soil 3, two ends of the drip irrigation pipe 6 are connected with a connector device 9 fixed at the bottom position of the seedling box body 1, the roll paper seedling system 2 is a foldable paper seedling device, the roll paper seedling system 2 is provided with a plurality of seedling holes 10, each seedling hole 10 is square, the adjacent seedling holes 10 are mutually connected, the horizontal direction of the roll paper seedling system 2 is a fixing plate 11 made of permeable thick paper, the vertical direction of the roll paper seedling system 2 is thin foldable permeable paper 12, and can be folded and stored by a middle crease line, a water inlet pipe 15 is externally connected with the connector device 9, a control valve 16 is installed on the upper portion of the water inlet pipe 15, the upper portion of the water inlet pipe 15 is communicated with a water storage device 17, and the water storage device 17 is hung on the support of the identification system, the top of the identification system is covered with a plastic cloth 18 for protection, the height of a support of the identification system is set to be 1.5-2 m, the side surface of the seedling box body is connected with a puncher 13, the size of the puncher 13 is the same as that of the rolled seedling system 2 after being unfolded, and the puncher 13 is provided with a nail-shaped punching nail 14 in the middle of each seedling hole 10 and can be used for punching soil before sowing and placing corn seeds.
The seedling box body 1 is made of PVC plate, the thickness is 0.4cm, the length, width and height of the seedling box body 1 are 70 x 40 x 30cm, the side surface of the bottom is uniformly provided with holes for installing joint devices 9, the bottom of the seedling box body 1 is paved with a sponge infiltration layer 5 with the thickness of 2cm, 4 drip irrigation belts 6 are distributed in the middle of the sponge infiltration layer 5 at the average interval of 10cm, two ends of the drip irrigation belts 6 are fixed on the joint devices 9 positioned at two sides by ferrules, the upper part of the drip irrigation belts 6 is paved with the sponge infiltration layer 5 with the thickness of 1cm, the top of the sponge infiltration layer 5 is positioned at the drip irrigation belts 6 and is distributed with a support frame 7 made of plastic material for fixing 5 and supporting the drip irrigation belts 6, the support frame 7 is fixed on the seedling box body 1, the support frame 7 is paved with absorbent paper 8 with the thickness of 3 layers, the roll paper seedling system 2 is unfolded and placed in the seedling box body 1, the height of the seedling box body 1 is 28cm, each seedling hole is 10cm x 10cm, the organic soil 3 is filled into the roll paper seedling system 2 to be compacted and leveled, the length of the pin head 14 of the puncher 13 is set to be 4cm, the pin head of the puncher 13 is pressed downwards into the soil in the roll paper seedling system 2 to form a seeding hole, corn seeds are placed into the seeding hole, the organic soil is further filled into the seeding hole, the seeding hole is flush with the top end of the roll paper tube, then the connector device 9 is connected with the external water inlet pipe 15, water can be fed into the seeding hole, and screening of drought-resistant germplasm materials is started. Because the water is transferred from the bottom seepage layer to the top soil, a water gradient small environment is formed at the bottom of the soil for a long time due to the gravity of the water, which is more similar to the actual planting environment in the field.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a high flux maize seedling stage drought resistance appraises drips irrigation device, includes seedling box (1) that contains organic soil (3), its characterized in that: the roll paper seedling raising system (2) is placed in the seedling raising box body (1), the roll paper seedling raising system (2) is filled with organic soil (3), and corn seedlings (4) are planted in the roll paper seedling raising system (2).
2. The high-throughput drip irrigation device for drought resistance identification in the corn seedling stage according to claim 1, is characterized in that: the sponge matter that the box of growing seedlings (1) bottom evenly laid the sponge matter of sponge matter oozes layer (5), sponge matter oozes and has evenly laid on layer (5) and drip irrigation pipe (6), drip irrigation pipe (6) are located a plurality of holes (19) of permeating water of bottom evenly distributed of stock form seedling growing system (2), drip irrigation pipe's (6) upper portion has still laid one deck sponge matter and has oozed layer (5), sponge matter oozes and is provided with support frame (7) of protection and fixed drip irrigation pipe (6) on layer (5), one deck absorbent paper (8) are laid on support frame (7) upper portion, absorbent paper (8) upper portion organic soil (3) in box of growing seedlings (1), it is connected with piecing devices (9) that are fixed in box of growing seedlings (1) bottom position to drip irrigation pipe (6) both ends.
3. The high-throughput drip irrigation device for drought resistance identification in the corn seedling stage according to claim 1, is characterized in that: stock form seedling growing system (2) is a folding paper device of growing seedlings, stock form seedling growing system (2) form a plurality of seedling holes (10), and every seedling hole (10) all are the square, and adjacent seedling hole (10) interconnect, and the horizontal direction of stock form seedling growing system (2) is solid template (11) of the thick paper preparation of permeating water, and the vertical direction of stock form seedling growing system (2) is the collapsible paper (12) that permeates water of thin matter to crease in the middle of the accessible is folded and is preserved.
4. The high-throughput drip irrigation device for drought resistance identification in the corn seedling stage according to claim 2, is characterized in that: the water quality testing system is characterized in that a water inlet pipe (15) is connected to the outside of the joint device (9), a control valve (16) is installed at the middle upper part of the water inlet pipe (15), the upper part of the water inlet pipe (15) is communicated with a water storage device (17), the water storage device (17) is hung on a support of the testing system, a plastic cloth (18) used for protecting is covered at the top of the testing system, and the height of the support of the testing system is set to be 1.5-2 m.
5. The high-throughput drip irrigation device for drought resistance identification in the corn seedling stage according to claim 1, is characterized in that: the side of the seedling raising box body (1) is connected with a puncher (13), the size of the puncher (13) is the same as that of the rolled paper seedling raising system (2) after expansion, and a nail-shaped punching nail (14) is arranged in the middle of each seedling raising hole (10) of the puncher (13) and can be used for punching soil before seeding and placing corn seeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121399949.5U CN215898490U (en) | 2021-06-23 | 2021-06-23 | High-flux corn seedling stage drought resistance identification drip irrigation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121399949.5U CN215898490U (en) | 2021-06-23 | 2021-06-23 | High-flux corn seedling stage drought resistance identification drip irrigation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215898490U true CN215898490U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121399949.5U Expired - Fee Related CN215898490U (en) | 2021-06-23 | 2021-06-23 | High-flux corn seedling stage drought resistance identification drip irrigation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215898490U (en) |
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2021
- 2021-06-23 CN CN202121399949.5U patent/CN215898490U/en not_active Expired - Fee Related
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Granted publication date: 20220225 |