CN214126182U - Salt-isolating salt-discharging root rot-preventing container - Google Patents
Salt-isolating salt-discharging root rot-preventing container Download PDFInfo
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- CN214126182U CN214126182U CN202022962043.1U CN202022962043U CN214126182U CN 214126182 U CN214126182 U CN 214126182U CN 202022962043 U CN202022962043 U CN 202022962043U CN 214126182 U CN214126182 U CN 214126182U
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Abstract
The utility model discloses a separate salt and arrange salt and prevent mashed root container, including bottom container (1), top border (2), irrigation coil (3) and check valve (4), wherein top border (2) sub-unit connection bottom container (1) to link up in the middle of top border (2) and bottom container (1), irrigation coil (3) suit is fixed in top border (2) periphery, and wherein irrigation coil (3) link up with top border (2), check valve (4) are a plurality of, and wherein a plurality of check valve (4) set up in bottom container (1) bottom, the external irrigation system of irrigation coil (3).
Description
Technical Field
The utility model relates to a plant species plants container technical field, especially relates to a separate salt and arrange salt and prevent mashed root container.
Background
At present, greening engineering on land where plants such as saline-alkali soil, polluted sites and the like are difficult to survive is mainly carried out through a greening technology or a container, the greening technology comprises an original soil technology and an alien soil technology, the original soil technology can save alien soil raw materials and engineering, but a modifier is needed, the effect is slow, a large amount of leaching water sources are consumed, and a concealed pipe salt elimination engineering is generally needed; the technique for soil dressing is mature, the effect is good, but the soil needs to be changed comprehensively, the soil consumption is large, the treatment of a salt isolation layer and the salt discharge engineering of a concealed pipe need to be assisted, and the soil dressing is affected after underground brine excessively rises over the salt isolation layer. The container comprises a non-porous container and a porous container, wherein the non-porous container can completely isolate the influence of external salt, but can not discharge excessive water in the container, and can cause root rot of plants; the container with the holes can discharge excessive moisture in the container to prevent the rotten roots of plants, but external salt can enter along with the moisture through the holes in the container to pollute soil in the container, so that the development of the container capable of isolating salt and discharging salt to prevent the rotten roots is necessary.
SUMMERY OF THE UTILITY MODEL
To the defect and not enough that exist among the prior art, the utility model aims to provide a separate salt and arrange salt and prevent mashed root container has solved the shortcoming that prior art exists.
The technical scheme of the utility model as follows: the utility model provides a separate salt and arrange salt and prevent mashed root container, includes bottom container, top border, irrigation coil and check valve, wherein top border sub-unit connection bottom container to top border and bottom container middle link up, irrigation coil suit is fixed in top border periphery, and wherein irrigation coil and top border link up, the check valve is a plurality of, and wherein a plurality of check valve sets up in bottom container bottom, the external irrigation system of irrigation coil.
Preferably, the top border is composed of a first circular truncated cone-shaped border and a second circular truncated cone-shaped border, wherein the large-diameter end of the first circular truncated cone-shaped border is connected with the top of the bottom container, the small-diameter end of the first circular truncated cone-shaped border is connected with the small-diameter end of the second circular truncated cone-shaped border, the small-diameter end of the second circular truncated cone-shaped border is the same as the small-diameter end of the first circular truncated cone-shaped border in size, the first circular truncated cone-shaped border and the second circular truncated cone-shaped border are connected and communicated, an included angle between the first circular truncated cone-shaped border and the second circular truncated cone-shaped border is 45 degrees, and the irrigation coil is sleeved at an included angle between the first circular truncated cone-shaped border and the second circular truncated cone-shaped border.
Preferably, irrigation coil pipe is connected and fixed with first round platform shape border through hollow anchor pipe, hollow anchor pipe includes that hollow tube and edge anchor dish, and the edge anchor dish is two, and the hollow tube both ends are threaded connection edge anchor dish respectively, irrigation coil pipe and first round platform shape border correspond the position and are provided with the irrigation mouth, and the hollow tube passes irrigation coil pipe and the irrigation mouth that first round platform shape border corresponds the position respectively, and one of them edge anchor dish with penetrate the hollow tube threaded connection in the irrigation coil pipe, another edge anchor dish with penetrate the hollow tube threaded connection in the first round platform shape border.
Preferably, the dish is anchored at the edge is round platform type, wherein the dish small diameter end is anchored at the edge and hollow tube threaded connection, and the dish major diameter end is anchored at the edge and hugs closely irrigation coil pipe or first round platform shape border.
Preferably, irrigation coil's internal diameter is 25mm, and irrigation coil's wall thickness is 2mm, and the wall thickness at first round platform shape border is 2mm, the height of hollow tube is 4mm, and the size that the edge anchor dish stretches out the hollow tube is 1mm, irrigation coil and the every cadmium 10cm at first round platform shape border are provided with an irrigation mouth.
Preferably, the bottom container is cylindrical or has an inverted truncated cone shape.
Preferably, the check valve is by casing, rubber buffer, supporter, upper filter screen and lower floor's filter screen, and wherein the casing is cavity reducing cylinder pipe, upper filter screen sets up in the casing up end, and lower floor's filter screen sets up terminal surface under the casing, the supporter is fixed in the inside big internal diameter section of casing, and on the supporter was fixed in at rubber buffer lower extreme center, rubber buffer up end was sealed the middle through-hole of casing, and wherein the rubber buffer is umbrella-type structure.
Compared with the prior art, the utility model has the advantages of:
(1) the top edge of the utility model is composed of a first round platform-shaped edge and a second round platform-shaped edge, the large diameter end of the second round platform-shaped edge is upward, the rainwater entering the container can be increased, the evaporation capacity is reduced, and the water consumption of the plant is ensured;
(2) the utility model discloses bottom container bottom is provided with the check valve, and the check valve can make in the container too much moisture discharge by the check valve lower part, prevents to soak and causes the rotten root of plant to the moisture outside the container (surface water or bury the soil saturated moisture after in the soil) can not get into the container to guarantee that the soil in the container is not polluted by the moisture that contains salt, effectively separate the salt;
(3) the utility model discloses top border cover is equipped with irrigation coil, irrigation coil is connected and is fixed with first round platform shape border through hollow anchor pipe, irrigation coil external irrigation system, and water in irrigation system gets into irrigation coil, gets into the container through hollow anchor pipe and irrigates the plant, and water also can dissolve the salinity in the soil, deposits the salinity in the container bottom, discharges the container through the check valve at last, effectively arranges salt, ensures the stability of the salinity content of the soil in the container;
(4) the utility model has simple construction, does not need salt isolation layer and concealed pipe salt discharge engineering, saves engineering amount and foreign soil amount, and can not cause the foreign soil to return salt when the underground water level excessively rises; the plant root system is prevented from growing downwards, and the phenomenon that the plant root system of the plant part dies after penetrating through the salt isolation layer is protected.
Drawings
FIG. 1 is a schematic structural view of a salt-isolating and salt-discharging root rot-preventing container of the present invention;
FIG. 2 is a schematic structural view of a salt-isolating and salt-discharging root rot-preventing container of the present invention;
FIG. 3 is a schematic view of a hollow anchor structure of a salt-isolating, salt-discharging and root-rot-preventing container of the present invention;
FIG. 4 is a schematic view of the sealing state of the check valve of the salt-isolating, salt-discharging and root-rot-preventing container of the present invention;
fig. 5 is a schematic view of the drainage state of the check valve of the salt-isolating and salt-discharging root rot-preventing container of the present invention.
Description of reference numerals:
1. the irrigation system comprises a bottom container, 2, a top edge, 3, an irrigation coil, 4, a check valve, 5 and a hollow anchored pipe;
2-1, a first truncated cone-shaped edge, 2-2 and a second truncated cone-shaped edge;
4-1 parts of a shell, 4-2 parts of a rubber plug, 4-3 parts of a support body, 4-4 parts of an upper layer filter screen, 4-5 parts of a lower layer filter screen;
5-1, hollow tube, 5-2, anchored disk at edge.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples:
it should be noted that the structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy that the present invention can produce and the purpose that can be achieved.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Example 1
As shown in fig. 1-2, the utility model discloses a separate salt and arrange salt and prevent mashed root container, including bottom container 1, top border 2, irrigation coil 3 and check valve 4, wherein 2 sub-unit connection bottom containers 1 in top border to link up in the middle of 2 and the bottom container 1 in top border, irrigation coil 3 suit is fixed in 2 peripheries in top border, and wherein irrigation coil 3 link up with 2 in top border, check valve 4 is a plurality of, and wherein a plurality of check valve 4 sets up in 1 bottoms of bottom container, the external irrigation system of irrigation coil 3.
Example 2
Preferably, as shown in fig. 1-2, the top edge 2 is composed of a first truncated cone-shaped edge 2-1 and a second truncated cone-shaped edge 2-2, wherein the large diameter end of the first truncated cone-shaped edge 2-1 is connected with the top of the bottom container 1, the small diameter end of the first truncated cone-shaped edge 2-1 is connected with the small diameter end of the second truncated cone-shaped edge 2-2, the small diameter end of the second truncated cone-shaped edge 2-2 is the same as the small diameter end of the first truncated cone-shaped edge 2-1 in size, the first truncated cone-shaped edge 2-1 and the second truncated cone-shaped edge 2-2 are connected with each other in a through way, the included angle between the first truncated cone-shaped edge 2-1 and the second truncated cone-shaped edge 2-2 is 45 degrees, wherein the irrigation coil pipe 3 is sleeved at the included angle between the first truncated cone-shaped edge 2-1 and the second truncated cone-shaped edge 2-2.
Example 3
Preferably, as shown in fig. 3, said irrigation coil 3 is connected and fixed to the first truncated cone shaped edge 2-1 via a hollow anchored pipe 5, hollow anchored pipe 5 comprises hollow pipe 5-1 and two discs 5-2 at its edge, hollow pipe 5-1 is threaded at both ends respectively to disc 5-2 at its edge, irrigation openings are formed in the positions, corresponding to the first truncated cone-shaped edge 2-1, of the irrigation coil 3, hollow pipes 5-1 penetrate through the irrigation openings in the positions, corresponding to the first truncated cone-shaped edge 2-1, of the irrigation coil 3 respectively, one of the edges is anchored with a disk 5-2 in threaded connection with a hollow tube 5-1 penetrating into the irrigation coil 3, and the other edge is anchored with a disk 5-2 in threaded connection with a hollow tube 5-1 penetrating into the first truncated cone-shaped edge 2-1.
Preferably, said edge anchor 5-2 is truncated cone shaped, as shown in fig. 3, wherein the small diameter end of the edge anchor 5-2 is in threaded connection with the hollow tube 5-1, and the large diameter end of the edge anchor 5-2 is attached to the irrigation coil 3 or the first truncated cone shaped edge 2-1.
Example 4
Preferably, the inner diameter of the irrigation coil 3 is 25mm, the wall thickness of the irrigation coil 3 is 2mm, the wall thickness of the first truncated cone-shaped edge 2-1 is 2mm, the height of the hollow tube 5-1 is 4mm, the size of the edge anchor plate 5-2 extending out of the hollow tube 5-1 is 1mm, and an irrigation opening is formed in the irrigation coil 3 and the first truncated cone-shaped edge 2-1 every 10cm of cadmium.
The height of the hollow tube 5-1 is equal to the sum of the wall thickness of the irrigation coil 3 and the wall thickness of the first truncated cone shaped edge 2-1.
The irrigation openings can be arranged according to the water supply requirements of plants.
Preferably, as shown in FIGS. 1-2, the bottom container 1 is cylindrical or inverted truncated cone-shaped.
Example 5
Preferably, as shown in fig. 4 to 5, the check valve 4 comprises a housing 4-1, a rubber plug 4-2, a support 4-3, an upper filter screen 4-4 and a lower filter screen 4-5, wherein the housing 4-1 is a hollow reducing cylinder, the upper filter screen 4-4 is disposed on the upper end surface of the housing 4-1, the lower filter screen 4-5 is disposed on the lower end surface of the housing 4-1, the support 4-3 is fixed to the large inner diameter section inside the housing 4-1, the center of the lower end of the rubber plug 4-2 is fixed on the support 4-3, the upper end surface of the rubber plug 4-2 seals the middle through hole of the housing 4-1, and the rubber plug 4-2 is of an umbrella-shaped structure.
The utility model discloses the theory of operation as follows:
the utility model discloses a bottom container 1, top border 2, irrigation coil 3 and check valve 4, top border 2 can reduce the evaporation capacity of water, and 2 periphery covers in top border are equipped with irrigation coil 3, irrigation coil 3 link up with first round platform shape border 2-1 through hollow anchor 5, water passes through irrigation system and gets into irrigation coil 3, then irrigate the plant in getting into bottom container 1, excessive water discharges through check valve 4 that bottom container 1 bottom set up, salt in the soil dissolves in the aquatic and sinks in the container bottom, can discharge unnecessary salinity.
The utility model discloses the application as follows:
in the greening of saline-alkali soil: a. digging pits in a greening field, b, placing a container with a check valve, c, planting greening plants, d, placing foreign soil in the container and compacting, e, watering and maintaining through an irrigation coil pipe 3.
The container of corresponding specification can be selected according to the plant characteristic, for example shallow type containers such as flowerpot can be selected to the herbage, the great tubbiness container of bush, arbor can select, can consider simultaneously and excavate the planting groove of materials such as building cement in afforestation plot, and the tank bottom disposes a plurality of check valve 4.
The container can be used for local greening, and meanwhile, the mode of covering shell stones and the overgrown plant humifuse euphorbia is combined to realize the integral greening of the area, namely, the point local soil removal drives the planar area to be greened.
The seedlings can be directly put into the container in advance or during lifting, and then maintained and transported to a greening construction site, so that the influence on the growth of the seedlings in the transportation process is reduced.
Cost estimation
1. Small arbor and shrub planting cost estimation
Designing a bottom container 1 of a small arbor and shrub planting container to be in an inverted frustum shape, wherein the container is made of PP plastic; setting the upper caliber as 1m, the lower caliber as 0.8m and the depth as 1 m; the upper part is open, and 8 check valves are arranged at the bottom.
In the construction operation, a foundation pit with the diameter of about 1.3m and the depth of about 1m is excavated in a planting area by a machine, the bottom of the pit is leveled by filling soil and is properly compacted until the distance between the bottom of the pit and the ground is about 0.9m, after the foundation pit is treated, a planting container is placed in the gap between the periphery of an inner container of the foundation pit and original soil and is filled with in-situ saline soil, trees to be planted are placed in the container, greening foreign soil is used for backfilling, proper compaction is performed after the backfilling is finished, and a support is arranged if necessary.
The cost of machinery and labor except for planting the nursery stock of the required material in a single container is shown in the following table 1:
TABLE 1 estimation table for single plant cost of small arbor and shrub planting
Note: the unit price of the foreign soil is the total unit price including transportation cost and loading and unloading cost, and the amount of the foreign soil is the amount of the removed nursery stock soil balls; the manual consumption is the manual labor consumed by manually assisting excavation and leveling of the foundation pit, and the manual labor required by seedling planting is not included; the machine consumption does not include the machine shifts required for extra soil backfilling.
The control area of the obtained single plant is 2.25m calculated according to the tree spacing of 1.5m2Control 2m per plant2Calculating to obtain the unit area cost of 61 yuan/m for planting small trees and shrubs in the saline-alkali soil2。
2. Cost estimation for planting grass flowers and vines
The bottom container 1 of the container for planting the grass flowers and the vines is designed to be in an inverted truncated cone shape, the container is made of PP plastic, the upper caliber is 0.3m, the lower caliber is 0.25m, the depth is 0.3m, and the upper part is open. The bottom of the foundation pit is provided with 1 check valve, the foundation pit is excavated manually, the diameter of the foundation pit is 0.5m, the depth of the foundation pit is 0.3m, and the bottom of the foundation pit is filled with soil and is compacted to be 0.25m away from the top of the foundation pit. And (3) after the foundation pit is treated, placing the planting pot into the foundation pit, planting the seedlings and then backfilling the removed soil, wherein the method is the same as the above method, and the cost of machinery and labor except the seedlings which are needed by planting in a single container is shown in the table 2.
TABLE 2 estimation table for cost of planting single plant of grass flower and vine
Note: the unit price of the foreign soil is the total unit price including transportation cost and loading and unloading cost.
The containers are arranged at a spacing of 0.4m, and the control area is 0.16m2Square meter, 1m2The required number of containers is 6.25, and the cost per unit area is about 82 yuan/m2。
The square groove made of plastic materials can be considered for planting the herbaceous and the liana, and the cost is similar to or slightly higher than the shape of the flowerpot.
The material and the style of the container are selected to be optimal, so that the cost is reduced; starting from multiple angles such as material selection and maintenance process, the technology and the material are ensured to be effective as long as possible; the water inlet at the top and the water inlet at the bottom of the check valve 4 can adopt more refined means and technology, thereby realizing the protection of the cavity of the check valve and ensuring the durability.
The container can be filled with original soil to become one of the original soil greening technologies, the original soil in the container is improved, the salt is washed by combining the watering measures in the greening management, and the salt gathered in the saline soil is discharged out of the container through a bottom check valve.
The container can be made of soft materials like a simple solar hot water bag, has a water bag-shaped structure, is better suitable for different terrains, and is easy to transport.
The utility model discloses the top border that sets up comprises first round platform shape border and second round platform shape border, and the major diameter end at second round platform shape border upwards, and the rainwater of multiplicable entering container reduces the evaporation capacity, guarantees the water consumption of plant.
The utility model discloses bottom container bottom is provided with the check valve, and the check valve can make in the container too much moisture by the discharge of check valve lower part, prevents to soak and causes the mashed root of plant to the outside moisture of container (surface water or bury back soil saturation moisture in the soil) can not get into the container, thereby guarantees that the interior soil of container is not polluted by the moisture that contains salt, effectively separates the salt.
The utility model discloses top border cover is equipped with irrigation coil, irrigation coil is connected and fixed with first round platform shape border through hollow anchor pipe, the external irrigation system of irrigation coil, water among the irrigation system gets into irrigation coil, it irrigates to the plant in getting into the container through hollow anchor pipe, the salinity in the water also can dissolve soil, deposit salinity in the container bottom, through check valve discharge container at last, effective salt is arranged, ensures the stability of the salinity content of the soil in the container.
The utility model has simple construction, does not need salt isolation layer and concealed pipe salt discharge engineering, saves engineering amount and foreign soil amount, and can not cause the foreign soil to return salt when the underground water level excessively rises; the plant root system is prevented from growing downwards, and the phenomenon that the plant root system of the plant part dies after penetrating through the salt isolation layer is protected.
The utility model discloses the container can be used in the greening engineering on the soil that plants such as saline and alkaline land, contaminated site are difficult to the survival, realizes afforesting fast. The container is particularly suitable for places which are small in area and inconvenient for large-scale arrangement of salt isolation layers and salt discharge technologies of concealed pipes, such as strip-shaped greening projects in streets and spot-shaped greening projects in gardens.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (7)
1. A salt-isolating and salt-discharging root rot-preventing container is characterized in that: including bottom container (1), top border (2), irrigation coil (3) and check valve (4), wherein top border (2) sub-unit connection bottom container (1) to link up in the middle of top border (2) and bottom container (1), irrigation coil (3) suit is fixed in top border (2) periphery, and wherein irrigation coil (3) link up with top border (2), check valve (4) are a plurality of, and wherein a plurality of check valve (4) set up in bottom container (1) bottom, the external irrigation system of irrigation coil (3).
2. The container for preventing root rot by separating salt and discharging salt as claimed in claim 1, wherein: the top edge (2) consists of a first truncated cone-shaped edge (2-1) and a second truncated cone-shaped edge (2-2), wherein the large diameter end of the first truncated cone-shaped edge (2-1) is connected with the top of the bottom container (1), the small diameter end of the first truncated cone-shaped edge (2-1) is connected with the small diameter end of the second truncated cone-shaped edge (2-2), the small diameter end of the second truncated cone-shaped edge (2-2) is the same as the small diameter end of the first truncated cone-shaped edge (2-1), the first truncated cone-shaped edge (2-1) and the second truncated cone-shaped edge (2-2) are connected with each other in a through way, the included angle between the first truncated cone-shaped edge (2-1) and the second truncated cone-shaped edge (2-2) is 45 degrees, wherein the irrigation coil (3) is sleeved at the included angle of the first truncated cone-shaped edge (2-1) and the second truncated cone-shaped edge (2-2).
3. The container for preventing root rot by separating salt and discharging salt as claimed in claim 2, wherein: the irrigation coil pipe (3) is connected and fixed with the first truncated cone-shaped edge (2-1) through a hollow anchored pipe (5), the hollow anchored pipe (5) comprises a hollow pipe (5-1) and two discs (5-2) at the edge, two discs (5-2) at the edge are anchored, two ends of the hollow pipe (5-1) are respectively in threaded connection with the discs (5-2) at the edge, irrigation openings are formed in the positions, corresponding to the first truncated cone-shaped edge (2-1), of the irrigation coil (3), hollow pipes (5-1) penetrate through the irrigation openings in the positions, corresponding to the first truncated cone-shaped edge (2-1), of the irrigation coil (3), one of the edge anchor discs (5-2) is in threaded connection with a hollow tube (5-1) penetrating into the irrigation coil (3), and the other edge anchor disc (5-2) is in threaded connection with a hollow tube (5-1) penetrating into the first truncated cone-shaped edge (2-1).
4. The container for preventing root rot by separating salt and discharging salt according to claim 3, wherein: the edge anchor plate (5-2) is round-platform-shaped, wherein the small-diameter end of the edge anchor plate (5-2) is in threaded connection with the hollow pipe (5-1), and the large-diameter end of the edge anchor plate (5-2) is tightly attached to the irrigation coil pipe (3) or the first round-platform-shaped edge (2-1).
5. The container for preventing root rot by separating salt and discharging salt according to claim 3, wherein: the internal diameter of irrigation coil pipe (3) is 25mm, and the wall thickness of irrigation coil pipe (3) is 2mm, and the wall thickness of first round platform shape border (2-1) is 2mm, the height of hollow tube (5-1) is 4mm, and the size that edge anchor dish (5-2) stretches out hollow tube (5-1) is 1mm, irrigation coil pipe (3) and first round platform shape border (2-1) every cadmium 10cm are provided with an irrigation mouth.
6. The container for preventing root rot by separating salt and discharging salt as claimed in claim 1, wherein: the bottom container (1) is cylindrical or inverted truncated cone-shaped.
7. The container for preventing root rot by separating salt and discharging salt as claimed in claim 1, wherein: check valve (4) by casing (4-1), rubber buffer (4-2), supporter (4-3), upper filter screen (4-4) and lower floor's filter screen (4-5), wherein casing (4-1) is the hollow reducing cylinder pipe, upper filter screen (4-4) set up in casing (4-1) up end, and lower floor's filter screen (4-5) set up terminal surface under casing (4-1), supporter (4-3) are fixed in the inside big internal diameter section of casing (4-1), and rubber buffer (4-2) lower extreme center is fixed in on supporter (4-3), rubber buffer (4-2) up end is sealed with casing (4-1) middle through-hole, and wherein rubber buffer (4-2) are umbrella-type structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022962043.1U CN214126182U (en) | 2020-12-11 | 2020-12-11 | Salt-isolating salt-discharging root rot-preventing container |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022962043.1U CN214126182U (en) | 2020-12-11 | 2020-12-11 | Salt-isolating salt-discharging root rot-preventing container |
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| CN214126182U true CN214126182U (en) | 2021-09-07 |
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| CN202022962043.1U Active CN214126182U (en) | 2020-12-11 | 2020-12-11 | Salt-isolating salt-discharging root rot-preventing container |
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