Saline-alkali resistant system for landscape plant planting soil

Abstract

The utility model relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali resistant system for landscape plant planting soil. A landscape plant planting soil salt and alkali resistance system comprises an isolation layer and a planting soil layer which are sequentially arranged upwards from an original soil layer, a salt and water discharging pipe is arranged in the isolation layer and used for discharging water and salt in the isolation layer into a rainwater well, and soil moisture sensors are arranged in the isolation layer and the planting soil layer correspondingly. A pH sensor is further arranged above the salt and water drainage pipe in the isolation layer, and a water supply pipe is further arranged at the bottom of the planting soil layer. By arranging the soil moisture sensor and the pH sensor, the soil moisture content and the pH value in different soil layers can be known conveniently, by arranging the water supply pipe at the bottom of the planting soil layer, landscape plants can be irrigated conveniently, meanwhile, salt and alkali can be scoured, and the planting effect is good. The problems that in the prior art, the underground water return height cannot be accurately known, and flushing is inconvenient after underground water return are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to saline-alkali soil improvement technical field especially, relate to a kind of landscape plant planting soil anti-saline-alkali system. BACKGROUND

[0002] For some coastal cities, the degree of salinization of its land is higher, the soil in these areas is mostly alkaline, and the pH value can even reach more than 8.5, while the soil salt content is extremely high, indicating that the plant growth environment is poor. Thus, the tree growth condition in these areas is not good, and the lawn is severely degraded.

[0003] There are also schemes for improving saline-alkali soil in the prior art. For example, a saline-alkali soil improvement system constructed from comprehensive waste is disclosed in a Chinese utility model patent with the authorization announcement date of July 8, 2022 and the authorization announcement number of CN216906240U. In this system, a salt separation layer, a salt washing and draining layer, a salt washing and eluting layer, an improvement layer (i.e., a planting soil layer), and a plant layer are arranged from bottom to top above the saline-alkali soil. The salt separation layer, the salt washing and draining layer, and the salt washing and eluting layer (i.e., the isolation layer) are respectively composed of construction waste and mine solid waste. A plurality of uniformly distributed salt draining and draining pipes are arranged in the salt washing and draining layer. The ends of the salt draining and draining pipes are connected to a water collecting well for concentrating and discharging the salt in the soil with water, thereby reducing the soil salt content.

[0004] Although the salt draining and draining pipes are used to collect and discharge the salt in the above technical scheme, the soil needs to have a lot of water. In order to flush the salt, water needs to be poured from the plant layer, and the water needs to penetrate from top to bottom to take the salt away. This operation is troublesome and can easily cause the soil oxygen content to decrease, thereby causing the plant root system to lack oxygen. In addition, the height of the rising underground water cannot be known in the above scheme, so it is not possible to determine when the saline-alkali soil needs to be flushed. UTILITY MODEL CONTENTS

[0005] In view of the above, the utility model provides a landscape plant planting soil anti-saline-alkali system to solve the problem that the height of the rising underground water cannot be accurately known and it is inconvenient to flush after the underground water is reversed in the prior art.

[0006] A landscape plant planting soil anti-saline-alkali system includes an isolation layer and a planting soil layer arranged in order from the original soil layer upwards. The isolation layer is provided with salt draining and draining pipes arranged in a fishbone shape. The salt draining and draining pipes are used to communicate with a rainwater well to discharge the water and salt in the isolation layer into the rainwater well. The characteristics are that the isolation layer and the planting soil layer are respectively provided with soil moisture sensors for detecting the water content to determine the height of the rising underground water. The top of the salt draining and draining pipes in the isolation layer is further provided with a pH sensor. The bottom of the planting soil layer is further provided with a water supply pipe for transporting weak acid solution to neutralize alkaline soil or for transporting irrigation water.

[0007] Further, the soil moisture sensors are arranged in multiple groups, respectively arranged at the bottom of the isolation layer, the top of the isolation layer and the bottom of the water supply pipe.

[0008] Further, the water discharge holes are arranged on the pipe walls of the salt discharge pipe and the water supply pipe, and the sand-proof and water-permeable geotextile is wound on the outer circumferential surfaces of the salt discharge pipe and the water supply pipe.

[0009] Further, the salt discharge pipe and the water supply pipe are arranged staggeredly on the horizontal plane.

[0010] Further, the water discharge holes on the salt discharge pipe have a larger diameter than the water discharge holes on the water supply pipe, and the water discharge holes on the salt discharge pipe have a larger spacing than the water discharge holes on the water supply pipe.

[0011] Further, the geotextile is arranged between the isolation layer and the planting soil layer to prevent the planting soil layer from fusing with the isolation layer.

[0012] Further, the weight of the geotextile per square meter is not less than 200 grams.

[0013] Further, the thickness of the isolation layer is not less than 60 cm.

[0014] The landscape plant planting soil anti-saline system has the advantages that: the landscape plant planting soil anti-saline system in the utility model can separate the planting soil layer capable of planting landscape plants from the original soil layer with more saline by arranging the isolation layer and the planting soil layer, and can also raise the planting soil layer by arranging the isolation layer, thereby reducing the possibility of upward erosion of underground water to the planting soil layer; when the underground water containing more saline rises, the saline can be gathered in the salt discharge pipe and discharged into the rainwater well by arranging the salt discharge pipe in the isolation layer; the soil moisture content in different soil layers can be easily known by arranging the soil moisture sensors in the isolation layer and the planting soil layer, and when the surface water content is less and the water content of the isolation layer is more, it is proved that the underground water is reversed, at this time, it can be known that the planting soil layer has the risk of being eroded by saline, and the acid-base property of the water in the soil can be known by arranging the pH sensor, thereby conveniently prompting the staff to take precautions; the water supply pipe is arranged at the bottom of the planting soil layer, which can conveniently irrigate the landscape plants and also can flush the saline, and due to the action of gravity, the water passing through the water supply pipe will penetrate downward and reach the salt discharge pipe, and then the water will take away the saline or take away the neutralized saline, thereby conveniently inhibiting the risk of rising of the saline content, and further solving the problems in the prior art that the height of the reversed underground water cannot be accurately known and the flushing after the underground water is reversed is inconvenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0016] Figure 1 It is a cross-sectional view of the embodiment of the landscape plant growing soil anti-saline system in the present application.

[0017] Figure 2 It is a schematic diagram of pipeline arrangement in the embodiment of the landscape plant growing soil anti-saline system in the present application.

[0018] The meaning of the reference numerals in the drawing is as follows: 1, original soil layer; 2, salt and water drainage pipe; 21, water collecting pipe; 22, water drainage branch pipe; 3, isolation layer; 4, soil moisture sensor; 5, pH sensor; 6, geotextile; 7, water supply pipe; 8, planting soil layer; 9, improved soil tree hole; 10, rainwater well. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be described below by specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0020] The terms used in the present disclosure are merely for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "an" and "the" used in the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0021] It should be understood that although the terms first, second, third, etc. can be used in the present disclosure to describe various information, these information should not be limited to these terms, and should not be understood as indicating or implying relative importance. These terms are only used to distinguish one type of information from another. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon determination" or "in response to determining".

[0022] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] In the description of the utility model, unless otherwise specified and limited, it is explained that the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, and can be the communication between two elements, and can be directly connected or indirectly connected through an intermediate medium, and the specific meaning of the above terms can be understood according to the specific situation for ordinary skilled persons in the art.

[0024] In the subsequent description, the suffix such as "module", "component" or "unit" used for indicating elements is only for the convenience of the description of the utility model, and has no specific meaning. Therefore, "module" and "component" can be used mixedly.

[0025] In order to better understand the technical scheme of the utility model, the utility model will be described in detail below in combination with the drawings.

[0026] In the embodiment 1 of the landscape plant planting soil salt-tolerant system (hereinafter referred to as the salt-tolerant system) in the utility model, the salt-tolerant system is used for planting plants in the salt-alkali area.

[0027] In the embodiment, the planting soil layer suitable for planting plants is lifted and isolated in the form of "lifting + isolation" to avoid the underground salt erosion of the planting soil layer. Meanwhile, the water supply pipe and the salt drainage pipe are arranged in the soil layer to adjust the underground water acid-base, isolate the rising of the high mineralization underground water and effectively reduce the degree of soil salinization.

[0028] As Figure 1As shown, the anti-saline system in the embodiment is arranged on the original soil layer 1 with saline. Under the capillary action of the soil, water will spread in the soil. When the underground water rises and the water content in the original soil layer 1 rises, the saline in the original soil layer 1 will rise with the water, causing the upper part of the original soil layer to be contaminated. Therefore, a planting soil layer 8 is not directly arranged above the original soil layer 1, but a separation layer 3 composed of gravel is arranged. The thickness of the separation layer 3 is not less than 60 cm. The gravel layer has a certain height and can play a role of isolation. In addition, the gravel itself is less affected by capillary action than soil, and can also reduce the risk of underground water rising through the gravel layer.

[0029] A planting soil layer 8 is arranged above the separation layer 3. A geotextile 6 is arranged between the separation layer 3 and the planting soil layer 8 to prevent the planting soil layer 8 from being mixed with the separation layer 3. The planting soil layer 8 is treated by deep plowing, drying and crushing according to the needs of the plants to be planted, and is fully mixed with the guest soil to provide the basic soil environment for plant planting. The setting height is different for different planting categories. For example, the deep plowing depth of the arbor planting area is not less than 60 cm; the deep plowing depth of the shrub, ground cover and lawn planting area is not less than 30 cm; and the planting layer thickness is not less than 100 cm. According to the needs of the plants to be planted, the corresponding soil improvement formula is configured. The improved soil hole 9 of the arbor planting area needs to be 1.3 times the diameter of the soil ball; the soil improvement range of the shrub, ground cover and lawn planting area is the same as the deep plowing work. Of course, according to the different planting categories, fine tuning can also be performed.

[0030] As shown in Figure 1 and Figure 2 The separation layer 3 will be continuously eroded by the rising underground water. Therefore, under normal circumstances, the saline content in the separation layer 3 will rise with the original soil layer 1. In the embodiment, a salt drainage pipe 2 is further arranged in the separation layer 3. The salt drainage pipe 2 has a plurality of parallel and spaced drainage branch pipes 22. The plurality of drainage branch pipes 22 are connected to a water collecting pipe 21 to form a fishbone shape. The water collecting pipe 21 is connected to a rainwater well 10. The drainage branch pipe 22 is a corrugated pipe. Water passing holes are formed in the outer wall of the corrugated pipe for water to pass through. The water passing holes of the salt drainage pipe 2 have a diameter of 1 cm and a hole spacing of 50 cm. Two layers of woven geotextile 6 are further wound on the outer circumferential surface to prevent mud and sand from entering the pipe and clogging the pipeline. Such arrangement can make the water in the separation layer 3 carry the saline and be collected into the salt drainage pipe 2 through the woven geotextile, and then be uniformly discharged.

[0031] The water supply pipe 7 is also staggered with the salt drainage pipe 2 in the horizontal direction, so as to avoid the waste caused by the direct channeling of the irrigation water from the water collecting pipe 21 into the salt drainage pipe 2. The water supply pipe 7 is also provided with water passing holes, the diameter of the water passing holes on the water supply pipe 7 is 5mm, the hole spacing is 10cm, and two layers of spun geotextile 6 are wound on the outer circumferential surface, so as to prevent the silt from entering the pipe and causing the pipe to be blocked. The water collecting pipe 21 is used for watering the plants by using the irrigation water, and when the salinity is excessive, the weak acid solution can be introduced to neutralize the salinity. Generally, the weak acid refers to the solution with the pH value of 5.0-6.9.

[0032] The groundwater cannot be directly observed by the human eye, so the sensor for conveniently detecting the moisture in the soil is arranged in the soil layer, and the sensor in the embodiment includes the soil moisture sensor 4 and the pH sensor 5. The soil moisture sensor 4 is provided in multiple groups and is arranged at the bottom of the isolation layer 3, the top of the isolation layer 3 and the bottom of the water supply pipe 7. The multiple groups of soil moisture sensors 4 are arranged to conveniently know the rising degree of the groundwater, and different measures can be taken according to the rising height. The pH sensor 5 is located above the salt drainage pipe 2 in the isolation layer 3, and the pH value is monitored in real time, the saltiness of the groundwater is distinguished, and the early warning is given in time. The sensor is arranged at the lowest elevation according to the topography of each region.

[0033] When the groundwater rises, the soil moisture sensor 4 will detect it, and once the soil moisture sensor 4 detects the excessive moisture information, the alarm needs to be given to remind the personnel. At this time, according to the detection of the pH sensor 5, if the pH sensor 5 shows that the salinity of the isolation layer 3 is low, the next step does not need to be performed; if the salinity is high, the flushing and salt removal treatment can be performed after the water level recedes, specifically, the water supply pipe 7 is opened, the water is supplied through the water supply pipe 7, the salinity and the moisture are flushed together, of course, the weak acid solution can also be directly used to neutralize the salinity. Of course, after the daily rain, the two sensors can also be checked, if the pH is high (more salinity), the above-mentioned way is used to flush and remove the salt.

[0034] It should be clear that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.

Claims

1. A landscape plant soil anti-saline system, comprising a barrier layer and a planting soil layer arranged in sequence from an original soil layer upwards, a salt drainage pipe arranged in a fishbone shape is arranged in the barrier layer, the salt drainage pipe is used for being in communication with a rainwater well to drain water and salt in the barrier layer into the rainwater well, characterized in that: A soil moisture sensor for detecting water content to determine the groundwater reverse water level is arranged in the isolation layer and the planting soil layer respectively, a pH sensor is further arranged above the salt drainage pipe in the isolation layer, and a water supply pipe for conveying weak acid solution to neutralize alkaline soil or conveying irrigation water is further arranged at the bottom of the planting soil layer. ​ 2. The landscape plant soil anti-saline system according to claim 1, characterized in that: The soil moisture sensor is arranged in multiple groups and arranged at the bottom of the isolation layer, the top of the isolation layer and the bottom of the water supply pipe respectively.

3. The landscape plant soil anti-saline system according to claim 1 or 2, characterized in that: Water holes are arranged on the pipe wall of the salt drainage pipe and the water supply pipe, and geotextile for preventing sand and water permeation is wound on the outer circumferential surface of the salt drainage pipe and the water supply pipe.

4. The landscape plant soil anti-saline system according to claim 3, characterized in that: The salt drainage pipe and the water supply pipe are staggered on the projection on the horizontal plane.

5. The landscape plant soil anti-saline system according to claim 3, characterized in that: The aperture of the water hole on the salt drainage pipe is larger than that of the water hole on the water supply pipe, and the hole spacing of the water hole on the salt drainage pipe is larger than that of the water hole on the water supply pipe.

6. The landscape plant soil salt-alkaline system according to claim 1 or 2, characterized in that: Geotextile is arranged between the isolation layer and the planting soil layer to prevent the planting soil layer from fusing with the isolation layer.

7. The landscape plant soil anti-saline system according to claim 6, characterized in that: The weight of the geotextile per square meter is not less than 200 grams.

8. The landscape plant soil anti-saline system according to claim 1 or 2, characterized in that: The thickness of the isolation layer is not less than 60 cm.

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