CN112136406B - Salt barrier material selection and setting method - Google Patents

Abstract

The present application discloses a method for selecting and setting materials for a salt insulating layer, including the following steps: S1: mixing and stirring wood particles, bamboo blocks and stone particles evenly, and then laying the mixture on the ground; S2: pouring the burning coke over the mixture , and the burned coke covers the entire mixture layer; S3: After the coke is burned out, use a roller to roll the mixed layer, and after the rolling is completed, the burning coke is poured over the mixture layer; S4: After the coke is burned out, the mixture is rolled The mud is poured above, and the mud cover is formed after the mud is dry. The invention has the following beneficial effects: using the salt barrier layer obtained by the method, after laying topsoil above the salt barrier layer, crops can be directly planted, and the salinization degree of the saline-alkali land below can be improved during the process of planting crops, so as to realize the protection of the saline-alkali land. repair.

Description

Salt barrier material selection and setting method

technical field

The invention relates to the field of land management, in particular to a method for selecting and setting materials for a salt barrier layer.

Background technique

Now in the process of saline-alkali land restoration, a salt barrier layer is usually set under the topsoil (the topsoil is used for planting crops), and the barrier effect of the salt barrier layer is used to prevent the salt substances below from entering the topsoil layer above. Patent 106106038A provides A kind of salt barrier layer is disclosed, and the salt barrier layer in the patent document includes a leak-proof layer, a rough stone layer, a reed grass layer, a fine stone layer and a nutrient layer, and the salt barrier layer is decomposed with the reed grass during use. , collapse and the effect of salt isolation will occur.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention proposes a method for selecting and setting the material of the salt barrier layer.

The technical scheme adopted by the present invention is as follows:

A method for selecting and setting a salt barrier layer material, comprising the following steps:

S1: Mix and stir wood particles, bamboo blocks and stone particles evenly, and then lay the mixture on the ground;

The above-mentioned wood particles, bamboo blocks, and stone particles are mixed together to act as a base layer;

S2: pour the burning coke over the mixture, and the burning coke covers the entire mixture layer;

The effect of pouring a layer of coke above the mixture is as follows. First, the coke is located above the mixture layer, which will make the mixture below it in a high temperature state, which will cause the wood particles and bamboo blocks to be carbonized to form activated carbon. When it comes down, activated carbon can play a role of adsorption, preventing organic matter from further entering the soil below and causing further damage to the soil; because the ecology of saline-alkali land is already very fragile, and except for some coastal tidal flats, most of the land in inland areas has saline-alkali soil. It is caused by the lack of water, so preventing organic matter from entering the salinized soil can protect the soil, and there will be no groundwater overflow due to lack of water; at the same time, wood particles, bamboo blocks, stones are used in this scheme. The three particles are mixed together and then carbonized, in order to integrate the three, because wood and bamboo will bond with the stone during the carbonization process and will not be washed away by water;

S3: After the coke is completely burned, the mixed layer is rolled by a road roller, and the burned coke is poured over the mixed layer after the rolling is completed;

The above process is to increase the content of activated carbon;

S4: After the coke is burnt out, the mud is poured over the mixture, and the mud covering is formed after the mud is dried;

The main purpose of pouring the mud is to completely bond the carbonized wood, bamboo and stone together, so that the carbonized wood, bamboo and stone form a solid and complete supporting layer.

S5: Mix pumice, slag, sand and ion exchange resin evenly, and then lay them on top of the soil cover;

Because there will be a layer of topsoil above the salt barrier, this topsoil is used to grow crops such as corn and fruits (corn and fruits are common crops in inland arid areas). Crops are watered, and chemical fertilizers are applied when planting crops, so each time during the watering process, the dissolved salts will flow downward. In order to avoid the salinization of the soil that has been salinized below, the above-mentioned pumice stones and slag are installed. , sand and ion exchange resin, use the speed of pumice, slag, sand to slow down the speed of water flow, and ion exchange resin can absorb some substances dissolved in water, so that it flows into the saline-alkali land below, so that the degree of salinization of the saline-alkali land can be greatly reduced, Therefore, when the topsoil above the salt barrier has been planted with crops for several years, the salinized soil below the salt barrier will be greatly reduced due to the impact of water flow, so after a period of time (usually 6-7 Years later), the salt barrier layer can be removed directly, and crops can be planted directly on the salinized soil;

S6: spray the mixture of pumice, slag, sand and ion exchange resin with water;

Water spray is used to bond the entire salt barrier layer together;

S7: After the spraying is completed, a clay layer is arranged above the mixture of pumice, slag, sand and ion exchange resin, and the clay layer is compacted.

To sum up, using this method to set the obtained salt barrier layer, crops can be directly planted after topsoil is laid above the salt barrier layer, and the salinization degree of the saline-alkali land below can be improved during the process of planting crops, so as to realize the restoration of the saline-alkali land. .

The role of the clay layer is to play a transitional role, laying topsoil on top of the clay layer, and planting crops on the topsoil.

Optionally, the mass ratio of the wood particles, bamboo blocks and stone particles is 1:1:5.

The formulation of the above ratio can ensure that the formed activated carbon can bond with the stone particles and remain stable.

Optionally, the thickness of the mixture layer composed of the wood particles, bamboo blocks and stone particles is 10-15 cm.

The above thickness is to ensure the stability of the support, and the second is to ensure the absorption efficiency of organic matter.

Optionally, the water content of the mud is 80%, and the added amount of the mud is 4 to 6 times the mixed mass of wood particles, bamboo blocks and stone particles.

Optionally, the thickness of the mixture of pumice, slag, sand and ion exchange resin is 5-10 cm.

The function of the above components is to adsorb salts on the basis of water permeability, so the thickness of the mixture is controlled to be 5-10 cm.

Optionally, the mass ratio of pumice, slag, sand and ion exchange resin is 5:5:3:1.

Optionally, the thickness of the clay layer is 3-5 cm.

Optionally, the water consumption during spraying is not less than 15 times the mass of the mixture of pumice, slag, sand and ion exchange resin.

Rinse with no less than 15 times of water is to ensure that the entire salt barrier can be stably bonded together.

Optionally, the amount of coke used is 2-3 times the mass of wood particles and bamboo pieces.

Optionally, the wood particles are spherical wood particles with a diameter of 2-3 cm, and the bamboo blocks are disc-shaped bamboo blocks.

The beneficial effects of the invention are as follows: using the salt barrier layer obtained by setting the method, crops can be directly planted after topsoil is laid above the salt barrier layer, and the salinization degree of the saline-alkali land below can be improved during the process of planting crops, so as to realize the protection of the saline-alkali land. repair.

Detailed ways:

The present invention will be described in detail below.

Example 1

A method for selecting and setting a salt barrier layer material, comprising the following steps:

S1: Mix and stir wood particles, bamboo blocks and stone particles evenly, and then lay the mixture on the ground;

S2: pour the burning coke over the mixture, and the burning coke covers the entire mixture layer;

S3: After the coke is completely burned, the mixed layer is rolled by a road roller, and the burned coke is poured over the mixed layer after the rolling is completed;

S4: After the coke is burnt out, the mud is poured over the mixture, and the mud covering is formed after the mud is dried;

S5: Mix pumice, slag, sand and ion exchange resin evenly, and then lay them on top of the soil cover;

S6: spray the mixture of pumice, slag, sand and ion exchange resin with water;

S7: After the spraying is completed, a clay layer is arranged above the mixture of pumice, slag, sand and ion exchange resin, and the clay layer is compacted.

In this embodiment, the mass ratio of the wood particles, bamboo blocks and stone particles is 1:1:5.

In this embodiment, the thickness of the mixture layer composed of the wood particles, bamboo blocks and stone particles is 10-15 cm.

In this embodiment, the water content of the mud is 80%, and the added amount of the mud is 4-6 times the mixed mass of wood particles, bamboo blocks and stone particles.

In this embodiment, the thickness of the mixture of pumice, slag, sand and ion exchange resin is 5-10 cm.

In this embodiment, the mass ratio of pumice, slag, sand and ion exchange resin is 5:5:3:1.

In this embodiment, the thickness of the clay layer is 3-5 cm.

In this embodiment, the water consumption during spraying is not less than 15 times the mass of the mixture of pumice, slag, sand and ion exchange resin.

In this embodiment, the amount of coke used is 2-3 times the mass of wood particles and bamboo pieces.

In this embodiment, the wood particles are spherical wood particles with a diameter of 2-3 cm, and the bamboo blocks are disc-shaped bamboo blocks

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of patent protection of the present invention. Any equivalent transformation made by using the contents of the description of the present invention, directly or indirectly applied to other related technical fields, shall similarly include within the protection scope of the present invention.

Claims (8)

1. A method for selecting and setting a salt-separating layer material suitable for water-deficient saline-alkali soil is characterized by comprising the following steps,

s1: mixing and stirring wood particles, bamboo blocks and stone particles uniformly, and then paving the mixture on the ground;

s2: pouring burning coke above the mixture, and covering the whole mixture layer with the burning coke;

s3: after the coke is completely burnt, rolling the mixed layer by using a road roller, and pouring the burnt coke above the mixed layer after the rolling is finished;

s4: pouring the slurry above the mixture after the coke is completely burnt, and forming a soil covering layer after the slurry is dried;

s5: mixing and stirring pumice, slag, sandy soil and ion exchange resin uniformly, and then paving the mixture above a soil covering layer;

s6: spraying a mixture of pumice, slag, sand and ion exchange resin with water;

s7: after spraying is finished, arranging a clay layer above the mixture of pumice, slag, sandy soil and ion exchange resin, and compacting the clay layer;

surface soil is arranged above the clay layer and used for planting crops, and when the crops are planted, the crops need to be watered and chemical fertilizers are applied;

the using amount of the coke is 2-3 times of the mass of the wood particles and the bamboo blocks;

the wood particles are spherical wood particles, the diameter of the wood particles is 2-3 cm, and the bamboo blocks are wafer-shaped bamboo blocks.

2. The method for selecting and setting the material of the salt-separating layer according to claim 1, wherein the mass ratio of the wood particles to the bamboo blocks to the stone particles is 1: 1: 5.

3. the method for selecting and arranging the material of the salt-separating layer as claimed in claim 1, wherein the thickness of the mixture layer consisting of the wood particles, the bamboo blocks and the stone particles is 10-15 cm.

4. The method for selecting and setting the material of the salt-separating layer according to claim 1, wherein the water content of the slurry is 80%, and the addition amount of the slurry is 4-6 times of the mixed mass of the wood particles, the bamboo blocks and the stone particles.

5. The method of claim 1, wherein the thickness of the mixture of pumice, slag, sand and ion exchange resin is 5-10 cm.

6. The method of claim 1, wherein the mass ratio of pumice to slag to sand to ion exchange resin is 5:5:3: 1.

7. The method for selecting and arranging a material of a salt-separating layer according to claim 1, wherein the thickness of the clay layer is 3-5 cm.

8. The method of claim 1, wherein the amount of water used for spraying is not less than 15 times the mass of the mixture of pumice, slag, sand and ion exchange resin.