CN211880949U

CN211880949U - Saline and alkaline land salt elimination system

Info

Publication number: CN211880949U
Application number: CN202020289466.9U
Authority: CN
Inventors: 斯琴
Original assignee: Inner Mongolia Hengyuan Water Engineering Co ltd
Current assignee: Inner Mongolia Hengyuan Water Engineering Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-11-10
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses a saline and alkaline land salt elimination system for the salinity that improves saline and alkaline land soil, including first lock water layer, guest soil layer, the metalling that sets up in order. Wherein, first lock water layer is arranged in pinning the moisture in the soil, prevents excessive evaporation, and the soil dressing layer is used for planting the root system growth of plant, and the metalling is used for keeping apart the saline and alkaline layer in saline and alkaline land. Still including setting up in the drainage channel of treating improvement saline and alkaline land both sides and burying the saline and alkaline land in and the water tank that links to each other with the drainage channel, the water tank is used for collecting the salt solution of saline and alkaline land and carries salt solution to the drainage channel, and the drainage channel carries salt solution to salt solution centralized processing ground. The first water locking layer, the passenger soil layer and the gravel layer effectively improve the problem that the passenger soil seriously returns salt, simultaneously lock a plant growth water source, and the water tank and the water channel are matched to use so that the salt water can be timely discharged out of the cultivation area to prevent salt from returning.

Description

Saline and alkaline land salt elimination system

Technical Field

The utility model belongs to the technical field of soil improvement, especially, relate to a saline and alkaline land salt elimination system.

Background

In the cultivable land of China, the coastal beach land is more than 800 ten thousand mu, the salinity is more than three thousandth, and the saline-alkali land under one eighty thousand percent has large salt content, is idle or is utilized reluctantly to cause low yield, thus affecting the economic benefit.

The existing common method for improving and utilizing the saline-alkali soil is foreign soil replacement, wherein the foreign soil replacement is mainly to dig a planting field to a depth of 60-100cm and fill the planting field with the foreign soil. The method can only solve the problem of short term, the underground saline water can still continuously irrigate the soil for the long time to cause the soil to return salt, and the replaced foreign soil can also become saline soil quickly. But the method is a method for treating symptoms and root causes, and the replacement of the foreign soil often consumes manpower and material resources. In view of the above, effective prevention of salt rejection of alien soil is a technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a saline and alkaline land salt elimination system has improved the problem that salt was returned to the soil of leaving.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a saline-alkali soil salt elimination system is used for improving salinity of saline-alkali soil and comprises a first water locking layer, a guest soil layer and a rubble layer which are sequentially arranged; wherein, first lock water layer is arranged in pinning the moisture in the soil, prevents excessive evaporation, and the soil dressing layer is used for planting the root system growth of plant, and the metalling is used for keeping apart the saline and alkaline layer in saline and alkaline land. Still including setting up in the water drainage channel of treating improvement saline and alkaline land both sides and the water tank that links to each other with the water drainage channel, the water tank is used for collecting the salt solution of saline and alkaline land and carries salt solution to the water drainage channel, and the water drainage channel carries salt solution to salt solution disposal ground.

Further, saline and alkaline land salt elimination system still includes the second lock water layer that sets up between passenger soil layer and metalling.

Furthermore, the water tank comprises a water collecting section and a water storage section positioned at the lower part of the water collecting section, and through holes are formed in the side wall and the top surface of the water collecting section of the water tank.

Furthermore, the water tank is arranged below the second water locking layer, embedded into the rubble layer and extended to the salt-alkali layer; wherein the water collecting section is positioned on the crushed stone layer and the salt-alkali layer, and the water storage section is positioned on the salt-alkali layer.

Furthermore, a filtering cover is arranged outside the water collecting section of the water tank and used for filtering soil.

Furthermore, the bottom end of the water tank is provided with a water outlet, and the water outlet of the water tank is communicated with the water drainage channel through a concealed pipe.

Further, the first water-locking layer is a pine needle layer, and the second water-locking layer is a straw layer or a pine bark layer.

Furthermore, the gravel layer is composed of gravel with the diameter of 2-3 cm.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses be provided with first lock water layer, guest soil layer, metalling in order on the saline and alkaline layer in saline and alkaline land, the guest soil of suitable farming is difficult for being rewound by the salt water watering on saline and alkaline layer under the isolation of metalling. Simultaneously, a water tank for collecting saline water of the saline-alkali soil and a water channel for transporting the saline water are arranged, so that the saline water is discharged out of the cultivation area, and the problem of salt return of the foreign soil layer is further improved.

(2) The utility model discloses set up twice lock water layer, the moisture in the soil of leaving the soil is pinned to first lock water layer, prevents to cultivate the excessive evaporation of moisture in district, and the moisture in the soil of leaving the soil is pinned to second lock water layer, provides moisture to the soil layer of leaving the soil, improves the problem of moisture in the soil of leaving the soil in a large number to the seepage at the bottom of the ground for the soil of leaving more suitable cultivation, thereby effectively blocked the salt solution of cultivating water source and the bottom of the ground and switched on formation capillary water and appear and return the salt problem simultaneously.

(3) The utility model provides a water collection section setting of water tank is in metalling and salt alkali layer for the salt solution infiltration water tank on salt alkali layer is discharged from the concealed conduit. And the salt water for cleaning the passenger soil layer and the crushed stone layer in rainy days or irrigation timely permeates into the water tank to be discharged. Meanwhile, the water tank is positioned below the second water locking layer, the cultivated land area is not occupied, and the utilization rate of cultivated land is effectively protected.

Drawings

Fig. 1 is a top view of a saline-alkali soil salt elimination system provided by the embodiment of the utility model.

Fig. 2 is a schematic sectional view of a saline-alkali soil salt elimination system provided by the embodiment of the utility model.

Fig. 3 is a schematic cross-sectional view of a water tank according to an embodiment of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1-a first water-locking layer, 2-a soil-bearing layer, 3-a rubble layer, 4-a second water-locking layer, 5-a saline-alkali layer, 6-a drainage channel, 7-a concealed pipe, 8-a water tank, 9-a filter cover, 81-a water outlet and 82-a through hole.

Detailed Description

The present invention will be further described with reference to the following drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples.

Referring to fig. 1 to 3, a saline-alkali soil salt elimination system for improving salinity of saline-alkali soil includes a first lock water layer 1, a soil dressing layer 2, a second lock water layer 4 and a rubble layer 3 sequentially disposed on a saline-alkali layer 5 of saline-alkali soil. The saline alkali of the original soil is too high to be suitable for cultivation or the cost of improvement and treatment is too high, at the moment, the saline alkali soil of a cultivation layer is directly replaced by the alien soil suitable for plant growth, the first water locking layer 1 is arranged on the alien soil layer 2, the moisture in the alien soil layer 2 is prevented from being excessively evaporated, and therefore the saline rate of the alien soil is suitable for plant growth. Set up second lock water layer 4 in soil dressing layer 2 and metalling 3, prevent the excessive downward seepage of moisture in soil dressing layer 2, provide moisture simultaneously for soil dressing layer 2 and prevent that the plant is in the state of lacking water, thereby further effectively block switching on of the salt solution at the bottom of the land of the farming water source in soil dressing and form capillary water and appear returning the salt problem. Set up metalling 3 on saline and alkaline land salt alkali layer 5 for cut off salt alkali layer 5 and vegetation district, the space between the rubble of metalling 3 makes salt alkali layer 5 salt solution be difficult for up permeating, improves the problem that the extra soil returns salt.

And meanwhile, the two sides of the saline-alkali soil to be improved are provided with a drainage channel 6 and a water tank 8 which is buried in the saline-alkali soil and is connected with the drainage channel 6. The water tank 8 is used for collecting saline water of saline-alkali soil and conveying the saline water to the drainage channel 6, and the drainage channel 6 conveys the saline water to a saline water treatment site. The water tank 8 includes catchment section and is located the water storage section of catchment section lower part, the lateral wall and the top surface of the catchment section of water tank are provided with through-hole 82, and the water tank 8 sets up in the below of second lock water layer 4, imbeds metalling 3 and extends to salt alkali layer 5. Wherein the water collecting section is positioned on the rubble layer 3 and the saline-alkali layer 5, and the water storage section is positioned on the saline-alkali layer 5.

The water collecting section of the water tank 8 is arranged on the crushed stone layer 3 and the saline-alkali layer 5, so that the saline water in the saline-alkali layer 5 permeates into the water tank 8 and is discharged from the concealed pipe 7. The salt water for cleaning the passenger soil layer and the crushed stone layer in rainy days or irrigation timely permeates into the water tank 8 to be discharged. The water collecting section of the water tank 8 is externally provided with a filter cover 9 for filtering soil, preventing the soil from blocking the through hole 82 and preventing the salt water from permeating into the water tank 8 to be discharged. The water tank 8 is positioned below the second water locking layer 4, does not occupy the cultivated land area in the effective salt discharging process, and effectively protects the utilization rate of cultivated land. The bottom end of the water tank 8 is provided with a water outlet 81 for discharging the brine, the water tank 8 is communicated with the drainage channel 6 through the closed pipe 7, and the closed pipe 7 is communicated with the water outlet 81.

In a non-limiting example, the first water-locking layer 1 is a pine needle layer, the pine needles have good drainage and air permeability, and when irrigation or rain occurs, moisture permeates the pine needle layer and flows to the foreign soil layer, and the pine needle layer is laid to prevent excessive evaporation of moisture in the foreign soil layer and insolation of the foreign soil layer. In another embodiment, when the spacing distance between plants planted in the foreign soil layer is large, the pine needles are wrapped in the gauze and laid on the foreign soil layer in a flat manner, and the pine needles on the surface layer are prevented from being blown away in the wind. The second water locking layer 4 is a straw layer or a pine bark layer, the straw layer or the pine bark layer has a good water absorption function, fresh water permeating during irrigation or raining is locked, and water is provided for the soil dressing layer in the arid period. The gravel layer is composed of 2-3 cm diameter gravels, particles of the gravels are too large, the upper soil is easy to sink, particles of the gravels are too small, capillary gaps are easy to form, and saline water on the saline-alkali layer permeates upwards through the capillary gaps to cause the phenomenon of foreign soil salt return.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not a limitation to the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis should belong to the protection scope of the present invention.

Claims

1. A saline-alkali soil salt elimination system is used for improving salinity of saline-alkali soil and is characterized by comprising a first water locking layer, a guest soil layer and a rubble layer which are sequentially arranged; the first water locking layer is used for locking water in soil and preventing excessive evaporation, the foreign soil layer is used for root growth of plants, and the rubble layer is used for isolating the saline-alkali layer and the foreign soil layer of the saline-alkali soil;

still including setting up in the drainage channel of treating improvement saline and alkaline land both sides and burying the water tank that links to each other in saline and alkaline land and with the drainage channel, the water tank is used for collecting the salt solution of saline and alkaline land and carries salt solution to the drainage channel, and the drainage channel carries salt solution to salt solution disposal ground.

2. The saline-alkali soil salt elimination system according to claim 1, further comprising a second water-locking layer disposed between the passenger soil layer and the gravel layer.

3. The saline-alkali soil salt elimination system according to claim 2, wherein the water tank comprises a water collection section and a water storage section positioned at the lower part of the water collection section, and through holes are formed in the side wall and the top surface of the water collection section of the water tank.

4. The saline-alkali soil salt elimination system according to claim 3, wherein the water tank is arranged below the second water locking layer, embedded in the rubble layer and extended to the saline-alkali layer; wherein the water collecting section is positioned on the crushed stone layer and the salt-alkali layer, and the water storage section is positioned on the salt-alkali layer.

5. The saline-alkali soil salt elimination system according to claim 4, wherein a filter cover is arranged outside the water collection section of the water tank and used for filtering soil.

6. The saline-alkali soil salt discharge system according to claim 5, wherein a water discharge port is formed at the bottom end of the water tank, and the water discharge port of the water tank is communicated with the water discharge channel through a concealed pipe.

7. The saline-alkali soil salt elimination system according to claim 6, wherein the first water-locking layer is a pine needle layer, and the second water-locking layer is a straw layer or a pine bark layer.

8. The saline-alkali soil salt elimination system according to claim 6, wherein the gravel layer is composed of gravel with the diameter of 2-3 cm.