CN210352080U - Strip saline-alkali soil in-situ improvement system - Google Patents
Strip saline-alkali soil in-situ improvement system Download PDFInfo
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- CN210352080U CN210352080U CN201921151221.3U CN201921151221U CN210352080U CN 210352080 U CN210352080 U CN 210352080U CN 201921151221 U CN201921151221 U CN 201921151221U CN 210352080 U CN210352080 U CN 210352080U
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Abstract
The utility model provides a strip saline-alkali soil normal position improvement system, include meticulous improvement district and the simple improvement district that sets gradually in the horizontal direction, a plurality of blind ditches have been seted up to the bottom in meticulous improvement district, the blind pipe has been laid in the blind ditch, it has permeable medium to fill around the blind pipe in the blind ditch, the top in blind ditch is equipped with salt isolation layer and improvement soil layer, salt isolation layer is located the bottom on improvement soil layer and around, simple improvement district includes from the supreme salt isolation layer and the improvement soil layer that sets gradually down. The utility model discloses be provided with meticulous improvement district and simple improvement district, need not change soil, and avoided traditional improvement system to put salt and full-spread the construction process who drenches the layer, reduced the engineering volume, saved construction cost, accelerated the construction progress.
Description
Technical Field
The utility model belongs to saline-alkali soil improvement field especially relates to a strip saline-alkali soil normal position improvement system.
Background
Soil is used as an important component of human ecological environment, and the utilization rate of the soil is more and more concerned and valued by people. The saline-alkali soil in China has wide area distribution, and the improvement and the effective utilization of the saline-alkali soil are always worldwide problems and are also the key research field of agricultural workers in China. However, because the harmful ions in the saline-alkali soil are too high and the physical and chemical properties of the soil are too poor, the operation of water, fertilizer, gas and heat of the soil is seriously affected, so that the soil is difficult to directly utilize, and the saline-alkali soil is generally utilized by adopting a mode of backfilling with soil or using a concealed pipe to remove salt in landscape engineering.
The backfilling of the foreign soil needs to be carried out from the cultivated area, which not only increases the engineering cost, but also destroys the cultivated land, and influences and hinders the sustainable development of agricultural soil. When the conventional saline-alkali soil is used for concealed conduit salt drainage, all the soil on the saline-alkali soil to be greened is dug away, blind conduits are dug in blind conduit ditches at the bottom at intervals of 8-16 m and laid, and the steps of salt drainage and full laying and sprinkling are carried out, so that the engineering quantity is huge, and the time and labor are consumed. Therefore, it is urgently needed to find an in-situ saline-alkali soil improvement system, which can carry out in-situ improvement on site, reduce the amount of engineering, reduce the cost and reduce the salinity of soil in a short period.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a strip saline-alkali soil normal position improvement system, this improvement system is provided with meticulous improvement district and simple improvement district, has avoided traditional improvement system to do the construction process of salt discharging and full-spread layer of drenching, has reduced the engineering volume, has saved construction cost, has accelerated the construction progress.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a strip saline-alkali soil normal position improvement system, includes meticulous improvement district and the simple improvement district that sets up in the horizontal direction alternately, a plurality of blind ditches have been seted up to the bottom in meticulous improvement district, the blind pipe has been laid in the blind ditch, the packing has permeable medium around the blind pipe in the blind ditch, the top in blind ditch is equipped with and separates salt layer and improvement soil layer, it is located the bottom and around the improvement soil layer to separate the salt layer, the simple improvement district includes from supreme salt layer and the improvement soil layer of separating that sets gradually down.
Furthermore, the thickness of the improved soil layer in the fine improvement area is 80-100 cm, and the thickness of the improved soil layer in the simple improvement area is 30-60 cm.
Furthermore, the section of the fine improvement area is an isosceles trapezoid with a wide upper part and a narrow lower part, the width of the bottom of the fine improvement area is 2-3 m, the width of the top of the fine improvement area is 3-4 m, and the width of the top of the simple improvement area is 8-15 m.
Furthermore, the number of the blind pipe ditches arranged at the bottom of the fine improvement area is two, the blind pipe ditches are respectively positioned at two sides of the bottom of the fine improvement area, and the cross section of each blind pipe ditch is in an isosceles trapezoid shape with a wide upper part and a narrow lower part.
Furthermore, the salt isolation layer and the permeable medium are made of slag, blast furnace slag or liquid slag.
Furthermore, the thickness of the salt isolation layer in the fine improvement area is 10-20 cm, the thickness of the salt isolation layer in the simple improvement area is 10-20 cm, and non-woven fabrics are laid between the salt isolation layer and the improvement soil layer.
Furthermore, a salinity sensor and a pH sensor are arranged in the improved soil layers of the fine improvement area and the simple improvement area.
Furthermore, a plurality of vertical straw layers penetrating through the improved soil layer are arranged on the improved soil layer of the fine improvement area at intervals, and the straw layers are made of cotton straws, corn straws or wheat straws.
Furthermore, the surfaces of the fine modification area and the simple modification area are paved with wood chip layers with the thickness of 2-5 cm.
Compared with the prior art, strip saline-alkali soil normal position improvement system have following advantage:
(1) the utility model discloses establish meticulous improvement district at the every certain distance of interval in the saline-alkali soil district of wanting to afforestation, be simple improvement district between the meticulous improvement district, meticulous improvement district all is equipped with the improvement soil layer with simple improvement district, need not change soil, two blind pipes of meticulous improvement district bottom parallel arrangement improve the salt discharge effect, avoided traditional improvement system to do the construction process that the salt discharge, full bed drenched the layer, reduced the engineering volume, saved construction cost, accelerated the construction progress.
(2) The utility model discloses be provided with salinity sensor and pH sensor, can know on-the-spot salt alkali developments at any time to in time adjust through plus means, reduce the soluble salt content of soil with the most economical and most effective measure in the short time.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a top view of a strip saline-alkali soil in-situ modification system according to an embodiment of the present invention;
fig. 2 is a partial sectional view of a strip saline-alkali soil in-situ modification system according to an embodiment of the present invention.
Description of reference numerals:
1. a fine improvement area; 2. a simple improvement area; 3. a salt-separating layer; 4. improving the soil layer; 5. blind pipe ditches; 6. a water permeable medium; 7. a blind pipe; 8. a straw layer; 9. a salinity sensor; 10. and a pH sensor.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A strip saline-alkali soil in-situ modification system, as shown in figures 1-2, comprises fine modification areas 1 and simple modification areas 2 which are alternately arranged in the horizontal direction, wherein saline-alkali original soil layers are arranged below the fine modification areas 1 and the simple modification areas 2. For convenient construction, the cross-section in meticulous improvement district 1 is wide isosceles trapezoid down, the bottom width in meticulous improvement district 1 is 2m, and the top width is 3m, the scope of the top width in simple improvement district 2 can be 8-15m, specifically can select according to on-the-spot soil soluble salt content, in a concrete implementation mode of this disclosure, the top width in simple improvement district 2 is 8 m.
Two blind pipe ditches 5 are formed in the bottom of the fine improvement area 1, the blind pipe ditches 5 are respectively located on two sides of the bottom of the fine improvement area 1, and the distance between the blind pipes 7 is about 2 meters. A blind pipe 7 is laid in the blind pipe ditch 5, and a permeable medium 6 is filled around the blind pipe 7 in the blind pipe ditch 5. The blind pipe 7 can enhance the drainage effect and is beneficial to salt leaching of the upper soil body.
And a salt isolation layer 3 with the thickness of 20cm and an improved soil layer 4 with the thickness of 80cm are arranged above the blind pipe ditch 5, and the salt isolation layer 3 is positioned at the bottom and around the improved soil layer 4. Simple improvement district 2 includes that the thickness that sets gradually from supreme down is 10cm salt separating layer 3 and thickness is 40cm improvement soil layer 4, and the thickness of the improvement soil layer 4 of simple improvement district 2 is less, reduces the construction work volume, accelerates the construction progress, saves construction cost, and the improvement soil layer 4 of simple improvement district 2 is fit for planting small-size flower shrub, and the improvement soil layer 4 of meticulous improvement district 1 is fit for planting large-scale bush and arbor. The salt-separating layer 3 of the simple improvement area 2 is adjacent to the salt-separating layer 3 of the fine improvement area 1, and the water with salt dissolved in the improved soil layer 4 of the simple improvement area 2 can quickly flow into the salt-separating layer 3 of the fine improvement area 1, then flows downwards along the salt-separating layer 3 into the blind pipe 7 in the blind pipe ditch 5, and finally is discharged through the blind pipe 7.
The improved soil layer 4 is the soil layer formed after the saline-alkali soil is subjected to the in-situ improvement, preferably the improved soil obtained after the saline-alkali soil is subjected to the in-situ improvement, in one specific embodiment of the present disclosure, the improved soil layer 4 may include saline-alkali soil and a soil conditioner, and the volume ratio of the saline-alkali soil to the soil conditioner is 1: 0.5, the improved saline-alkali soil can improve the soil granular structure, increase the organic matter content of the soil, improve the soil permeability, reduce the salt accumulation speed of the soil and improve the saline-alkali soil. Wherein the saline-alkali soil is preferably saline-alkali soil excavated in situ, the soil conditioner can be conventional in the field, such as at least one of cow dung, river sand, turfy soil and desulfurized gypsum, and the soil conditioner can be preferably prepared from cow dung, river sand, turfy soil and desulfurized gypsum in a mass ratio of about 20:15:14: 1. The optimized modifier has the advantages of wide and easily-obtained raw material source, low cost and good effect of modifying the saline-alkali soil.
The cross section of the blind pipe ditch 5 is an isosceles trapezoid with a wide upper part and a narrow lower part, the width of the bottom of the blind pipe ditch 5 is 20cm, and the depth is 30 cm. The blind pipe 7 has been laid to the bottom in meticulous improvement district 1, and the blind pipe 7 has not been laid to the bottom in simple improvement district 2, consequently, the utility model discloses avoided traditional improvement system to do the construction process that the salt was arranged and the layer was drenched to full shop, reduced the engineering volume, saved construction cost, accelerated the construction progress.
The salt isolation layer 3 can cut off the path of salt-containing water rising along the soil capillary, and prevent the phenomenon of 'salt return'.
Non-woven fabrics (not shown in the figure) are paved between the salt isolation layer 3 and the improved soil layer 4, and the non-woven fabrics prevent soil from entering the salt isolation layer 3. The salt separation layer 3 and the permeable medium 6 are made of slag, blast furnace slag or liquid slag, and the slag, the blast furnace slag or the liquid slag belong to industrial waste, so that the cost of soil improvement can be effectively reduced by using the slag, the blast furnace slag or the liquid slag.
All be equipped with salinity sensor 9 and pH sensor 10 in the improvement soil horizon 4 of meticulous improvement district 1 and simple improvement district 2, specifically, the model of salinity sensor 9 is TRYT, and the model of pH sensor 10 is TRPH, also other salinity sensors 9 and pH sensor 10 that can be to measuring soil salinity and pH. The salinity sensor 9 and the pH sensor 10 collect field data in real time and transmit the collected field data to a mobile phone or a computer, so that workers can know the change of salinity and pH on the improved field at any time, the nursery stock can be planted in time, and water and fertilizer can be irrigated and applied in time in the pipe cultivation process.
A plurality of vertical straw layers 8 penetrating through the improved soil layer 4 are arranged at intervals on the improved soil layer 4 of the fine improved area 1, and the straw layers 8 are made of cotton straws, corn straws or wheat straws. The straw layer 84 can increase the air permeability of the improved soil layer 4 and provide oxygen for plant roots, and meanwhile, after the straw layer 8 is decomposed, nutrients can be provided for soil and the physical and chemical properties of the soil can be changed.
The surfaces of the fine improvement area 1 and the simple improvement area 2 are respectively paved with a sawdust layer (not shown in the figure) with the thickness of 2-5cm, the particle size of sawdust on the sawdust layer is less than 3cm, the sawdust layer can reduce water evaporation, improve the water content of soil, and can provide nutrients for the soil and change the physical and chemical properties of the soil after the sawdust layer is decomposed.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A strip saline-alkali soil in-situ improvement system is characterized in that: the soil improvement method comprises a fine improvement area (1) and a simple improvement area (2) which are alternately arranged in the horizontal direction, wherein a plurality of blind pipe ditches (5) are formed in the bottom of the fine improvement area (1), blind pipes (7) are laid in the blind pipe ditches (5), permeable media (6) are filled around the blind pipes (7) in the blind pipe ditches (5), a salt isolation layer (3) and an improvement soil layer (4) are arranged above the blind pipe ditches (5), the salt isolation layer (3) is located at the bottom and around the improvement soil layer (4), and the simple improvement area (2) comprises the salt isolation layer (3) and the improvement soil layer (4) which are sequentially arranged from bottom to top.
2. The strip saline-alkali soil in-situ modifying system according to claim 1, wherein: the thickness of the improved soil layer (4) in the fine improvement area (1) is 80-100 cm, and the thickness of the improved soil layer (4) in the simple improvement area (2) is 30-60 cm.
3. The strip saline-alkali soil in-situ reclamation system as recited in claim 1 or 2, wherein: the cross section of the fine modification area (1) is an isosceles trapezoid with a wide upper part and a narrow lower part, the bottom width of the fine modification area (1) is 2-3 m, the top width of the fine modification area is 3-4 m, and the top width of the simple modification area (2) is 8-15 m.
4. The strip saline-alkali soil in-situ reclamation system as recited in claim 1 or 2, wherein: the number of the blind pipe ditches (5) formed at the bottom of the fine improvement area (1) is two, the blind pipe ditches (5) are respectively positioned at two sides of the bottom of the fine improvement area (1), and the cross section of each blind pipe ditch (5) is in an isosceles trapezoid shape with a wide upper part and a narrow lower part.
5. The strip saline-alkali soil in-situ reclamation system as recited in claim 1 or 2, wherein: the salt isolation layer (3) and the permeable medium (6) are made of slag, blast furnace slag or liquid slag.
6. The strip saline-alkali soil in-situ modifying system according to claim 5, wherein: the thickness of the salt isolation layer (3) of the fine improvement area (1) is 10-20 cm, the thickness of the salt isolation layer (3) of the simple improvement area (2) is 10-20 cm, and non-woven fabrics are laid between the salt isolation layer (3) and the improvement soil layer (4).
7. The strip saline-alkali soil in-situ reclamation system as recited in claim 1 or 2, wherein: and a salinity sensor (9) and a pH sensor (10) are arranged in the improved soil layers (4) of the fine improvement area (1) and the simple improvement area (2).
8. The strip saline-alkali soil in-situ reclamation system as recited in claim 1 or 2, wherein: the improved soil layer (4) of the fine improved area (1) is provided with a plurality of vertical straw layers (8) penetrating through the improved soil layer (4) at intervals, and the straw layers (8) are made of cotton straws, corn straws or wheat straws.
9. The strip saline-alkali soil in-situ reclamation system as recited in claim 1 or 2, wherein: and wood chip layers with the thickness of 2-5cm are paved on the surfaces of the fine improvement area (1) and the simple improvement area (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921151221.3U CN210352080U (en) | 2019-07-22 | 2019-07-22 | Strip saline-alkali soil in-situ improvement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921151221.3U CN210352080U (en) | 2019-07-22 | 2019-07-22 | Strip saline-alkali soil in-situ improvement system |
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| CN210352080U true CN210352080U (en) | 2020-04-21 |
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| CN201921151221.3U Expired - Fee Related CN210352080U (en) | 2019-07-22 | 2019-07-22 | Strip saline-alkali soil in-situ improvement system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112616350A (en) * | 2020-12-04 | 2021-04-09 | 山东大学 | Method for preventing salt return of saline-alkali soil by using salt isolation layer |
| CN114731917A (en) * | 2022-05-12 | 2022-07-12 | 塔里木大学 | Method for planting cyperus esculentus in saline-alkali soil in micro-furrow manner |
-
2019
- 2019-07-22 CN CN201921151221.3U patent/CN210352080U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112616350A (en) * | 2020-12-04 | 2021-04-09 | 山东大学 | Method for preventing salt return of saline-alkali soil by using salt isolation layer |
| CN114731917A (en) * | 2022-05-12 | 2022-07-12 | 塔里木大学 | Method for planting cyperus esculentus in saline-alkali soil in micro-furrow manner |
| CN114731917B (en) * | 2022-05-12 | 2023-03-28 | 塔里木大学 | Method for planting cyperus esculentus in saline-alkali soil in micro-furrow manner |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220307 Address after: 300300 4th floor, North building, No. 20, Huaming Avenue, Huaming high tech Industrial Zone, Dongli District, Tianjin Patentee after: Beijing Blue Garden Municipal Engineering Design Institute (Tianjin) Co.,Ltd. Address before: 300300 20 Huaming Avenue, Huaming Industrial Park, Dongli District, Tianjin. Patentee before: KINGLAND NORTH GARDENS (TIANJIN) CO.,LTD. |
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| 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: 20200421 |