CN214122141U - Assembled controllable water level plant root length density observation and measurement device - Google Patents
Assembled controllable water level plant root length density observation and measurement device Download PDFInfo
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- CN214122141U CN214122141U CN202022635601.3U CN202022635601U CN214122141U CN 214122141 U CN214122141 U CN 214122141U CN 202022635601 U CN202022635601 U CN 202022635601U CN 214122141 U CN214122141 U CN 214122141U
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- measuring pipe
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Abstract
The utility model relates to an assembled water level controllable plant root length and density observing and measuring device, which comprises an assembled transparent vertical cylinder, a bottom cover arranged at the lower end of the vertical cylinder and a pressure measuring pipe group, wherein the assembled transparent vertical cylinder comprises a plurality of vertical cylinder units, and the lower end of each vertical cylinder unit is provided with a pressure measuring through hole; the pressure measuring pipe group comprises a first pressure measuring pipe and a second pressure measuring pipe, a four-way device is arranged between the upper second pressure measuring pipe and the lower second pressure measuring pipe, and a first water stop valve is arranged outside the four-way device. The assembled water level-controllable plant root length density observation and measurement device is simple in structure and convenient to install, can directly observe the distribution condition of the root system in soil inside the assembled transparent vertical cylinder, measures the maximum root length of the plant root system in each period under the condition of not damaging the soil, and can control the water level burial depth in the soil; and the density of the root system of each layer of soil is measured and calculated by cutting off the soil columns at the joints of the two adjacent vertical cylinder units in the later period, so that the implementation effect is good.
Description
Technical Field
The utility model relates to an assembled controllable water level plant root length density observation and measurement device belongs to soil moisture migration research technical field.
Background
The root system is usually located below the soil layer as a vegetative organ of the plant, and absorbs water, inorganic salts and the like in the soil to obtain water and nutrients necessary for growth and development, and influences the growth condition of the overground part of the plant. The water emitted by the plant through transpiration comes from the soil water absorbed by the root system, so that the distribution condition of the plant root system is in certain relation with the underground water level and the soil water content. On one hand, different underground water burial depths influence the soil moisture condition and further influence the plant root distribution condition; on the other hand, the plant root system absorbs water to change the distribution condition of soil water, and the interaction between the plant root system distribution and the underground water exists. Therefore, the mutual feeding relationship between the underground water and the plant root system distribution is mastered, and the method has important significance in promoting the water absorption of the plants and improving the water utilization rate. Moreover, China is a big agricultural country, and the root systems of crops such as wheat, soybean, corn and the like can reach more than 2 meters underground, so that exploration of the mutual feed mechanism of distribution of underground water and the root systems of the crops has important significance for guiding agricultural irrigation, saving irrigation water and the like.
At present, the research on establishing the relationship between the underground water condition and the crop root distribution condition is less, the root system is difficult to observe underground, and the limitation of test fields and conditions is great. The device for researching the crop root system is too complicated, inconvenient to operate and high in measurement cost; or the measuring process is not strict enough, the underground water level condition cannot be controlled well, and the data has errors.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists provides an assembled controllable water level plant root length density observation measuring device, and concrete technical scheme is as follows:
an assembled water level controllable plant root length density observation and measurement device comprises an assembled transparent vertical cylinder, a bottom cover and a pressure measuring pipe group, wherein the bottom cover is installed at the lower end of the vertical cylinder; the pressure measuring pipe group comprises first pressure measuring pipes which correspond to the vertical cylinder units one by one and second pressure measuring pipes which correspond to the first pressure measuring pipes one by one, a cross joint device is arranged between the upper second pressure measuring pipe and the lower second pressure measuring pipe, a first water stop valve is arranged outside the cross joint device, the tail end of each first pressure measuring pipe is communicated with a pressure measuring through hole, the first pressure measuring pipe positioned below the cross joint device is communicated with the cross joint device, the first pressure measuring pipe positioned above the cross joint device is communicated with the cross joint device, the second pressure measuring pipe is communicated with the first pressure measuring pipes, and the first water stop valve is communicated with the cross joint device; the lower extreme of vertical cylinder is provided with into water through-hole, the outside of vertical cylinder is provided with the second stagnant water valve, the second stagnant water valve and the through-hole intercommunication of intaking.
As an improvement of the technical scheme, the vertical cylinder unit comprises a cylindrical cylinder body, flanges are arranged at the upper end and the lower end of the cylinder body, the inner ring of each flange is connected with the end of the cylinder body into a whole, and the flange is provided with a mounting hole.
As an improvement of the technical scheme, a waterproof ring is arranged on the outer side of the flange.
As an improvement of the technical scheme, a first filter screen layer is arranged at the pressure measuring through hole, and a second filter screen layer is arranged at the water inlet through hole.
As an improvement of the technical scheme, the first water stop valve and the second water stop valve are both pagoda type water stop valves.
The assembled water level-controllable plant root length density observation and measurement device has simple structure and convenient installation, can directly observe the distribution condition of the root system in the soil inside the assembled transparent vertical cylinder, measure the maximum root length of each period of the plant root system under the condition of not damaging the soil, and can control the water level burial depth in the soil; and the density of the root system of each layer of soil is measured and calculated by cutting off the soil columns at the joints of the two adjacent vertical cylinder units in the later period, so that the implementation effect is good.
Drawings
FIG. 1 is a schematic view of the connection between the assembled transparent vertical tube and the pressure measuring tube set according to the present invention;
FIG. 2 is a schematic structural view of the vertical tube unit of the present invention;
FIG. 3 is an internal schematic view of the assembled water level controllable plant root length and density observing and measuring device of the present invention;
fig. 4 is a schematic structural view (top view) of the vertical tube unit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-4, the assembled water level-controllable plant root length density observation and measurement device comprises an assembled transparent vertical cylinder, a bottom cover 3 installed at the lower end of the vertical cylinder, and a pressure measuring pipe group 4, wherein the lower end of the vertical cylinder is hermetically connected with the bottom cover 3, the assembled transparent vertical cylinder comprises a plurality of vertical cylinder units 1, and the lower ends of the vertical cylinder units 1 are provided with pressure measuring through holes; the pressure measuring pipe group 4 comprises first pressure measuring pipes 41 corresponding to the vertical cylinder units 1 one by one and second pressure measuring pipes 43 corresponding to the first pressure measuring pipes 41 one by one, a cross joint 42 is arranged between the upper and lower second pressure measuring pipes 43, a first water stop valve 44 is arranged outside the cross joint 42, the tail end of the first pressure measuring pipe 41 is communicated with a pressure measuring through hole, the first pressure measuring pipe 41 positioned below the cross joint 42 is communicated with the cross joint 42, the first pressure measuring pipe 41 positioned above the cross joint 42 is communicated with the cross joint 42, the second pressure measuring pipe 43 is communicated with the first pressure measuring pipe 41, and the first water stop valve 44 is communicated with the cross joint 42; the lower end of the vertical cylinder is provided with a water inlet through hole, a second water stop valve 71 is arranged outside the vertical cylinder, and the second water stop valve 71 is communicated with the water inlet through hole.
Further, the vertical cylinder unit 1 includes a cylindrical cylinder 10, flanges 11 are respectively disposed at upper and lower ends of the cylinder 10, an inner ring of each flange 11 is connected with an end of the cylinder 10 as a whole, and the flange 11 is provided with a mounting hole 111.
When the vertical cylinder units 1 are assembled into an assembled transparent vertical cylinder, the upper vertical cylinder unit 1 and the lower vertical cylinder unit 1 are butted through the flange 11 and connected through bolts, and the mounting holes 111 are mounting holes of the bolts. Wherein, in order to improve the sealing performance, a waterproof ring 13 is arranged on the outer side of the flange 11. The shaft unit 1 located at the lowest part is connected with the bottom cover 3 through bolts and sealed by a waterproof ring 13.
The number of the vertical tube units 1 can be set as desired. The barrel 10 and the bottom cover 3 are made of organic glass materials and are made to be transparent.
The second pressure measuring tube 43 and the first pressure measuring tube 41 are both transparent organic glass round tubes.
Furthermore, field undisturbed soil A with a corresponding set depth is filled into the assembled transparent vertical cylinder in a layered backfilling mode, and field undisturbed soil B with a corresponding set depth is filled upwards.
The second water stop valve 71 is used for adding water to the soil in the assembled transparent vertical cylinder,
according to the principle of a communicating vessel, the water level in the pressure measuring pipe group 4 is the same as the soil water level in the assembled transparent vertical cylinder, the water level in the second pressure measuring pipe 43 is the same as the water level in the corresponding vertical cylinder unit 1, the water level in the first pressure measuring pipe 41 is the same as the water level in the corresponding vertical cylinder unit 1, and the soil water level in the assembled transparent vertical cylinder can be obtained through the pressure measuring pipe group 4.
When water is added to the soil in the assembled transparent vertical cylinder through the second water stop valve 71, when the first water stop valve 44 is opened and water flows out of the first water stop valve 44, the second water stop valve 71 is closed, and when the first water stop valve 44 does not drip outwards, the soil water is controlled at the height of the pressure measuring through hole corresponding to the first water stop valve 44.
When the original soil water level is higher than the pressure measuring through hole corresponding to the first water stop valve 44, the corresponding first water stop valve 44 is opened, water flows out of the first water stop valve 44, and when the first water stop valve 44 does not drip outwards, the soil water is controlled at the height position of the pressure measuring through hole corresponding to the first water stop valve 44.
When the first water stop valve 44 is closed, water can be added into the soil through the second water stop valve 71, so that the water level in the soil is higher than the position of the pressure measuring through hole corresponding to the first water stop valve 44.
Further, in order to prevent soil from flowing backwards and blocking the pressure measuring pipe group 4, a first filter screen layer 81 is arranged at the pressure measuring through hole, and a second filter screen layer 83 is arranged at the water inlet through hole. The first filter screen layer 81 and the second filter screen layer 83 are both made of double-layer 200-mesh filter screens.
Further, the first water stop valve 44 and the second water stop valve 71 are both pagoda-type water stop valves, and can effectively prevent water from flowing backwards.
Furthermore, research plants are planted on the upper portion of the assembled transparent vertical barrel, the soil water level burial depth is controlled through the first water stop valve 44, the soil water level height is determined through the pressure measuring pipe group 4, and root system distribution and the maximum root length are conveniently observed due to the fact that the barrel body 10 is transparent.
Furthermore, according to research needs, the assembled transparent vertical cylinders can be disassembled from top to bottom in sequence for a certain lifetime of a plant, the earth columns and the root systems are cut off by a long knife between two adjacent vertical cylinder units 1, the soil is recovered in layers, the roots in each layer of soil are washed clean, all the roots are placed in a rectangular transparent tray after being picked out, the root systems are completely separated from each other by tweezers, the root systems are scanned by a scanner, the obtained root system pictures are analyzed by software, root system parameters such as the root length of each layer and the total root length are obtained, the total root length density is obtained by dividing the total root length by the total volume, the root length of each layer is divided by the soil volume of each layer, and the root length density of the corresponding layer is obtained for researching the distribution condition of the root systems.
In the embodiment, the assembled water level-controllable plant root length and density observation and measurement device is simple in structure and convenient to install, the distribution condition of the root system in the soil inside the assembled transparent vertical cylinder can be directly observed, the maximum root length of the plant root system in each period can be measured under the condition that the soil is not damaged, and the water level burial depth in the soil can be controlled; and the density of the root system of each layer of soil is measured and calculated by cutting off the soil columns at the joints of the two adjacent vertical cylinder units in the later period, so that the implementation effect is good.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides an assembled controllable water level plant root length density observation measuring device which characterized in that: the pressure measuring device comprises an assembled transparent vertical cylinder, a bottom cover (3) and a pressure measuring pipe group (4), wherein the bottom cover (3) is arranged at the lower end of the vertical cylinder, the lower end of the vertical cylinder is hermetically connected with the bottom cover (3), the assembled transparent vertical cylinder comprises a plurality of vertical cylinder units (1), and pressure measuring through holes are formed in the lower end of each vertical cylinder unit (1); the pressure measuring pipe group (4) comprises first pressure measuring pipes (41) corresponding to the vertical cylinder units (1) one by one and second pressure measuring pipes (43) corresponding to the first pressure measuring pipes (41) one by one, a cross joint device (42) is arranged between the upper second pressure measuring pipe and the lower second pressure measuring pipe (43), a first water stop valve (44) is arranged outside the cross joint device (42), the tail end of the first pressure measuring pipe (41) is communicated with the pressure measuring through hole, the first pressure measuring pipe (41) positioned below the cross joint device (42) is communicated with the cross joint device (42), the first pressure measuring pipe (41) positioned above the cross joint device (42) is communicated with the cross joint device (42), the second pressure measuring pipe (43) is communicated with the first pressure measuring pipes (41), and the first water stop valve (44) is communicated with the cross joint device (42); the lower end of the vertical cylinder is provided with a water inlet through hole, a second water stop valve (71) is arranged outside the vertical cylinder, and the second water stop valve (71) is communicated with the water inlet through hole.
2. The assembled water level controllable plant root length density observation and measurement device according to claim 1, characterized in that: the vertical cylinder unit (1) comprises a cylindrical cylinder body (10), flanges (11) are arranged at the upper end and the lower end of the cylinder body (10), the inner ring of each flange (11) is connected with the end of the cylinder body (10) into a whole, and mounting holes (111) are formed in the flanges (11).
3. The assembled water level controllable plant root length density observation and measurement device according to claim 2, characterized in that: and a waterproof ring (13) is arranged on the outer side of the flange (11).
4. The assembled water level controllable plant root length density observation and measurement device according to claim 1, characterized in that: and a first filter screen layer (81) is arranged at the pressure measuring through hole, and a second filter screen layer (83) is arranged at the water inlet through hole.
5. The assembled water level controllable plant root length density observation and measurement device according to claim 1, characterized in that: the first water stop valve (44) and the second water stop valve (71) are all pagoda type water stop valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635601.3U CN214122141U (en) | 2020-11-13 | 2020-11-13 | Assembled controllable water level plant root length density observation and measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635601.3U CN214122141U (en) | 2020-11-13 | 2020-11-13 | Assembled controllable water level plant root length density observation and measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN214122141U true CN214122141U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022635601.3U Expired - Fee Related CN214122141U (en) | 2020-11-13 | 2020-11-13 | Assembled controllable water level plant root length density observation and measurement device |
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| CN (1) | CN214122141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115152468A (en) * | 2022-07-26 | 2022-10-11 | 上海市农业科学院 | Device and method for acquiring underground phenotype of agricultural crop |
-
2020
- 2020-11-13 CN CN202022635601.3U patent/CN214122141U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115152468A (en) * | 2022-07-26 | 2022-10-11 | 上海市农业科学院 | Device and method for acquiring underground phenotype of agricultural crop |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210903 Termination date: 20211113 |