CN112075154A - Method for restoring saline-alkali soil into field - Google Patents
Method for restoring saline-alkali soil into field Download PDFInfo
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- CN112075154A CN112075154A CN202010973210.4A CN202010973210A CN112075154A CN 112075154 A CN112075154 A CN 112075154A CN 202010973210 A CN202010973210 A CN 202010973210A CN 112075154 A CN112075154 A CN 112075154A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
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- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K17/52—Mulches
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2101/00—Agricultural use
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a method for repairing a saline-alkali soil into a field, which comprises the following steps: removing surface soil of a saline-alkali land, covering a layer of acid-alkali modified layer on the saline-alkali land with the surface removed, arranging a planting soil layer on the acid-alkali modified layer, wherein the depth of the removed surface soil of the saline-alkali land is 40-60cm, the thickness of the acid-alkali modified layer is 3-5cm, the thickness of the planting soil layer is 40-60cm, the air permeability of the acid-alkali modified layer is 10-100, and the seepage coefficient is 10‑4‑10‑7cm/s, the acid-base modifying layer comprises the following raw materials: hydrophobic polyurethane resin and hydrophobicitySilicon resin, quartz sand, slag, ceramsite, glass bead, polylactic acid, a ventilation modification auxiliary agent, an acid-base modification auxiliary agent and a silane coupling agent KH-550. The method for repairing the saline-alkali soil into the field can ensure that the improved saline-alkali soil has excellent air permeability, and the yield of crops can be effectively improved by planting the crops in the improved saline-alkali soil.
Description
Technical Field
The invention belongs to the technical field of planting, and particularly relates to a method for repairing saline-alkali soil into a field.
Background
The saline-alkali soil is a kind of salt accumulation, which means that the salt contained in the soil influences the normal growth of crops, and according to the incomplete statistics of the textbook organization and the grain and agriculture organization of the united nations, the area of the saline-alkali soil all over the world is 9.5438 hundred million hectares, wherein 9913 million hectares are in China. The formation of alkaline earth and alkalized soil in China is mostly related to the accumulation of carbonate in soil, so that the alkalization degree is generally high, and plants in serious saline-alkaline earth regions can hardly survive. In the process of utilizing the saline-alkali soil, the saline-alkali soil can be divided into light saline-alkali soil, moderate saline-alkali soil and heavy saline-alkali soil. The light saline-alkali soil has the emergence rate of 70-80% and the salt content of less than three thousandths; the heavy saline-alkali soil has salt content more than six thousandths, and the emergence rate is lower than 50%; the middle part is the moderate saline-alkali soil (the PH value is expressed by 7.1-8.5 for the mild saline-alkali soil, 8.5-9.5 for the moderate saline-alkali soil and above 9.5 for the severe saline-alkali soil). At present, with the development of science and technology, only one side which is unfavorable should be seen, and the side which is unfavorable should be regarded as a precious land resource, because many organisms including plants and microorganisms can adapt to the environment, and more science and technology workers are put into the work of treating the saline-alkali soil with full enthusiasm, and the work of treating the saline-alkali soil can be finally won.
Disclosure of Invention
The invention aims to provide a method for repairing saline-alkali soil into a field.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method of remediating saline and alkaline land into a field, comprising: removing surface soil of saline-alkali soil, covering a layer of acid-alkali modified layer on the saline-alkali soil with the surface removedThe method comprises the steps of arranging a planting soil layer on the acid-alkali modified layer, wherein the depth of surface soil of the removed saline-alkali soil is 40-60cm, the thickness of the acid-alkali modified layer is 3-5cm, the thickness of the planting soil layer is 40-60cm, the air permeability of the acid-alkali modified layer is 10-100, and the seepage coefficient is 10-4-10-7cm/s, the acid-base modifying layer comprises the following raw materials: hydrophobic polyurethane resin, hydrophobic silicon resin, quartz sand, slag, ceramsite, glass bead, polylactic acid, a breathable modification auxiliary agent, an acid-base modification auxiliary agent and a silane coupling agent KH-550.
Preferably, the breathable modification auxiliary comprises the following raw materials in parts by weight: 10-20 parts of hydrogen peroxide, 15-25 parts of urea, 4-8 parts of sodium hexametaphosphate, 3-9 parts of calcium sulfate gypsum powder, 2-8 parts of bentonite, 4-7 parts of active silicon dioxide, 3-6 parts of wood powder slag, 4-8 parts of bamboo powder slag and 10-20 parts of water.
Preferably, the air-permeable modification auxiliary agent is prepared by the following process: uniformly mixing 25-35% by mass of hydrogen peroxide, urea and sodium hexametaphosphate, heating in a water bath to 25-35 ℃, stirring at a constant temperature for 5-15min, adding calcium sulfate gypsum powder, uniformly mixing, stirring for 5-15min, cooling in an ice water bath to 0-5 ℃, drying a filter cake at room temperature after suction filtration, adding bentonite, active silicon dioxide, wood powder slag, bamboo powder slag and water, uniformly mixing, stirring at a rotation speed of 3500 plus 5500r/min for 20-40min, heating to 70-90 ℃, preserving heat for 20-40min, cooling to room temperature, and drying to obtain the air-permeable modification auxiliary agent
Preferably, the acid-base modifying layer and the acid-base modifying auxiliary agent comprise the following raw materials in parts by weight: 20-40 parts of peanut shells, 4-8 parts of bamboo shoot shells, 4-8 parts of activated sludge, 3-6 parts of lime powder, 5-15 parts of straws, 2-8 parts of shell powder, 2-4 parts of rotten cucumbers, 3-6 parts of tea seed shell carbon granules, 1-4 parts of compost decomposing bacteria, 2-6 parts of crude fiber degrading bacteria, 4-8 parts of liquorice, 2-6 parts of rice husks, 4-7 parts of bran, 2-6 parts of sawdust, 4-9 parts of bone meal, 2-6 parts of urea, 4-7 parts of monoammonium phosphate and 2-6 parts of potassium sulfate.
Preferably, the acid-base modifying layer and the acid-base modifying auxiliary agent are prepared by the following processes: uniformly mixing peanut shells, bamboo shoot shells, activated sludge, lime powder, straws, shell powder, mashed cucumbers and tea seed shell carbon granules, adding compost decomposing bacteria and crude fiber degrading bacteria, fermenting at normal temperature for 2-5d, drying at 60-80 ℃ for 6-9h, and putting into a blender to prepare a granular material a with 10-30 meshes; putting liquorice, rice husk, bran, wood dust, bone meal, urea, monoammonium phosphate and potassium sulfate into a pulverizer to prepare a granular material b with 20-40 meshes, uniformly mixing the material a and the material b, and putting the mixture into a granulator to prepare the acid-base modifying aid.
Preferably, the raw materials of the acid-base modifying layer comprise, by weight: 50-100 parts of hydrophobic polyurethane resin, 40-60 parts of hydrophobic silicon resin, 20-40 parts of quartz sand, 10-20 parts of slag, 15-25 parts of ceramsite, 5-15 parts of glass bead, 9-13 parts of polylactic acid, 4-8 parts of breathable modification auxiliary agent, 6-9 parts of acid-base modification auxiliary agent and 5-15 parts of silane coupling agent KH-5505.
The invention has the following beneficial effects: the method for repairing the saline-alkali soil into the field can enable the improved saline-alkali soil to have excellent air permeability, and the yield of crops can be effectively improved by planting the crops in the improved saline-alkali soil. The added air-permeable modification auxiliary agent is prepared by using hydrogen peroxide, urea, sodium hexametaphosphate, calcium sulfate gypsum powder, bentonite, active silicon dioxide, wood powder slag, bamboo powder slag and water as raw materials, and the prepared air-permeable modification auxiliary agent is applied to the acid-base modification layer, so that the aperture of the acid-base modification layer can be effectively enlarged, the performance of the acid-base modification layer for absorbing surrounding water is improved, the air flow is further enhanced, the air permeability of the modified saline-alkali soil is improved, crops planted in the modified saline-alkali soil can normally grow, and the yield is effectively improved.
The acid-base modifying auxiliary agent contains rich organic matters and mineral substances and rich microorganisms, can meet various nutrient substances and trace elements required by plant growth, can effectively improve the acid-base property and the nutrient content of soil, can effectively improve the fertility of the soil, and improves the planting efficiency and quality.
Detailed Description
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
In an embodiment, a method of saline and alkaline land reclamation into a field, the method comprising: removing surface soil of a saline-alkali land, covering a layer of acid-alkali modified layer on the saline-alkali land with the surface removed, arranging a planting soil layer on the acid-alkali modified layer, wherein the depth of the removed surface soil of the saline-alkali land is 40-60cm, the thickness of the acid-alkali modified layer is 3-5cm, the thickness of the planting soil layer is 40-60cm, the air permeability of the acid-alkali modified layer is 10-100, and the seepage coefficient is 10-4-10-7cm/s, the acid-base modifying layer comprises the following raw materials: 50-100 parts of hydrophobic polyurethane resin, 40-60 parts of hydrophobic silicon resin, 20-40 parts of quartz sand, 10-20 parts of slag, 15-25 parts of ceramsite, 5-15 parts of glass bead, 9-13 parts of polylactic acid, 4-8 parts of breathable modification auxiliary agent, 6-9 parts of acid-base modification auxiliary agent and 5-15 parts of silane coupling agent KH-5505.
The breathable modification auxiliary agent is prepared by the following process: uniformly mixing 10-20 parts by weight of 25-35% hydrogen peroxide, 15-25 parts by weight of urea and 4-8 parts by weight of sodium hexametaphosphate, heating in a water bath to 25-35 ℃, stirring at a constant temperature for 5-15min, then adding 3-9 parts by weight of calcium sulfate gypsum powder, uniformly mixing, stirring for 5-15min, cooling in an ice water bath to 0-5 ℃, drying a filter cake at room temperature after suction filtration, then adding 2-8 parts by weight of bentonite, 4-7 parts by weight of active silica, 3-6 parts by weight of wood powder slag, 4-8 parts by weight of bamboo powder slag and 10-20 parts by weight of water, uniformly mixing at a rotation speed of 5500r/min of 3500 materials, stirring for 20-40min, then heating to 70-90 ℃, preserving heat for 20-40min, cooling to room temperature and drying to obtain the air-permeable modification auxiliary agent.
The acid-base modifying layer and the acid-base modifying auxiliary agent are prepared by the following processes: uniformly mixing 20-40 parts of peanut shells, 4-8 parts of bamboo shoot shells, 4-8 parts of activated sludge, 3-6 parts of lime powder, 5-15 parts of straws, 2-8 parts of shell powder, 2-4 parts of rotten cucumbers and 3-6 parts of tea seed shell carbon granules in parts by weight, adding 1-4 parts of compost decomposing bacteria and 2-6 parts of crude fiber degrading bacteria, fermenting at normal temperature for 2-5 days, drying at 60-80 ℃ for 6-9 hours, and putting into a blender to prepare a granular material a with 10-30 meshes; putting 4-8 parts of liquorice, 2-6 parts of chaff, 4-7 parts of bran, 2-6 parts of sawdust, 4-9 parts of bone meal, 2-6 parts of urea, 4-7 parts of monoammonium phosphate and 2-6 parts of potassium sulfate into a pulverizer to prepare a 20-40-mesh granular material b, then uniformly mixing the material a and the material b, and putting the mixture into a granulator to prepare the acid-base modifying auxiliary agent.
Example 1
A method of remediating saline and alkaline land into a field, comprising: removing surface soil of saline-alkali soil, covering a layer of acid-alkali modified layer on the saline-alkali soil with the surface removed, arranging a planting soil layer on the acid-alkali modified layer, wherein the depth of the removed surface soil of the saline-alkali soil is 50cm, the thickness of the acid-alkali modified layer is 4cm, the thickness of the planting soil layer is 50cm, the air permeability of the acid-alkali modified layer is 55, and the seepage coefficient is 10-4cm/s, the acid-base modifying layer comprises the following raw materials: 75 parts of hydrophobic polyurethane resin, 50 parts of hydrophobic silicon resin, 30 parts of quartz sand, 15 parts of slag, 20 parts of ceramsite, 10 parts of glass bead, 11 parts of polylactic acid, 6 parts of breathable modification auxiliary agent, 7.5 parts of acid-base modification auxiliary agent and 10 parts of silane coupling agent KH-55010.
The breathable modification auxiliary agent is prepared by the following process: uniformly mixing 15 parts by weight of 30% hydrogen peroxide, 20 parts by weight of urea and 6 parts by weight of sodium hexametaphosphate, heating in a water bath to 30 ℃, stirring at a constant temperature for 10min, then adding 6 parts by weight of calcium sulfate gypsum powder, uniformly mixing, stirring for 10min, then cooling in an ice water bath to 3 ℃, drying a filter cake at room temperature after suction filtration, then adding 5 parts by weight of bentonite, 6 parts by weight of active silica, 4.5 parts by weight of wood powder slag, 6 parts by weight of bamboo powder slag and 15 parts by weight of water, uniformly mixing, stirring at a rotating speed of 4500r/min for 30min, heating to 80 ℃, keeping the temperature for 30min, cooling to room temperature, and drying to obtain the air-permeable modified additive.
The acid-base modifying layer and the acid-base modifying auxiliary agent are prepared by the following processes: uniformly mixing 30 parts of peanut shells, 6 parts of bamboo shoot shells, 6 parts of activated sludge, 4.5 parts of lime powder, 10 parts of straws, 5 parts of shell powder, 3 parts of mashed cucumbers and 4.5 parts of tea seed shell carbon granules according to parts by weight, then adding 2.5 parts of compost decomposing bacteria and 4.5 parts of crude fiber degrading bacteria, fermenting at normal temperature for 3.5 days, drying at 70 ℃ for 7.5 hours, and putting into a blender to prepare a granular material a with 20 meshes; putting 6 parts of liquorice, 4 parts of rice husk, 5.5 parts of bran, 4 parts of wood dust, 6.5 parts of bone meal, 4 parts of urea, 5.5 parts of monoammonium phosphate and 4 parts of potassium sulfate into a pulverizer to prepare a 30-mesh granular material b, then uniformly mixing the material a and the material b, and putting the mixture into a granulator to prepare the acid-base modifying aid.
Example 2
A method of remediating saline and alkaline land into a field, comprising: removing surface soil of saline-alkali soil, covering a layer of acid-alkali modified layer on the saline-alkali soil with the surface removed, arranging a planting soil layer on the acid-alkali modified layer, wherein the depth of the removed surface soil of the saline-alkali soil is 40cm, the thickness of the acid-alkali modified layer is 5cm, the thickness of the planting soil layer is 40cm, the air permeability of the acid-alkali modified layer is 100, and the seepage coefficient is 10-4cm/s, the acid-base modifying layer comprises the following raw materials: 50 parts of hydrophobic polyurethane resin, 60 parts of hydrophobic silicon resin, 20 parts of quartz sand, 20 parts of slag, 15 parts of ceramsite, 15 parts of glass bead, 9 parts of polylactic acid, 8 parts of breathable modification auxiliary agent, 6 parts of acid-base modification auxiliary agent and 15 parts of silane coupling agent KH-550.
The breathable modification auxiliary agent is prepared by the following process: uniformly mixing 10 parts by weight of 35% hydrogen peroxide, 15 parts by weight of urea and 8 parts by weight of sodium hexametaphosphate, heating in a water bath to 25 ℃, stirring at a constant temperature for 15min, then adding 3 parts by weight of calcium sulfate gypsum powder, uniformly mixing, stirring for 15min, then cooling in an ice water bath to 0 ℃, drying a filter cake at room temperature after suction filtration, then adding 8 parts by weight of bentonite, 4 parts by weight of active silica, 6 parts by weight of wood powder slag, 4 parts by weight of bamboo powder slag and 20 parts by weight of water, uniformly mixing, stirring at a rotating speed of 3500r/min for 40min, then heating to 70 ℃, keeping the temperature for 40min, cooling to room temperature, and drying to obtain the air-permeable modified additive.
The acid-base modifying layer and the acid-base modifying auxiliary agent are prepared by the following processes: uniformly mixing 20 parts of peanut shells, 8 parts of bamboo shoot shells, 4 parts of activated sludge, 6 parts of lime powder, 5 parts of straws, 8 parts of shell powder, 2 parts of rotten cucumbers and 6 parts of tea seed shell carbon granules according to parts by weight, adding 1 part of compost decomposing bacteria and 6 parts of crude fiber degrading bacteria, fermenting for 2 days at normal temperature, drying for 6 hours at 80 ℃, and putting into a mincing machine to prepare a granular material a with 30 meshes; putting 4 parts of liquorice, 6 parts of rice husk, 4 parts of bran, 6 parts of wood dust, 4 parts of bone meal, 6 parts of urea, 4 parts of monoammonium phosphate and 6 parts of potassium sulfate into a pulverizer to prepare a 20-mesh granular material b, then uniformly mixing the material a and the material b, and putting the mixture into a granulator to prepare the acid-base modifying aid.
Example 3
A method of remediating saline and alkaline land into a field, comprising: removing surface soil of a saline-alkali land, covering a layer of acid-alkali modified layer on the saline-alkali land with the surface removed, arranging a planting soil layer on the acid-alkali modified layer, wherein the depth of the removed surface soil of the saline-alkali land is 60cm, the thickness of the acid-alkali modified layer is 3cm, the thickness of the planting soil layer is 60cm, the air permeability of the acid-alkali modified layer is 10, and the seepage coefficient is 10-7cm/s, the acid-base modifying layer comprises the following raw materials: 100 parts of hydrophobic polyurethane resin, 40 parts of hydrophobic silicon resin, 40 parts of quartz sand, 10 parts of slag, 25 parts of ceramsite, 5 parts of glass bead, 13 parts of polylactic acid, 4 parts of breathable modification auxiliary agent, 9 parts of acid-base modification auxiliary agent and 5 parts of silane coupling agent KH-5505.
The breathable modification auxiliary agent is prepared by the following process: uniformly mixing 20 parts by weight of 25% hydrogen peroxide, 25 parts by weight of urea and 4 parts by weight of sodium hexametaphosphate, heating in a water bath to 35 ℃, stirring at a constant temperature for 5min, adding 9 parts by weight of calcium sulfate gypsum powder, uniformly mixing, stirring for 5min, cooling in an ice water bath to 5 ℃, drying a filter cake at room temperature after suction filtration, adding 2 parts by weight of bentonite, 7 parts by weight of active silica, 3 parts by weight of wood powder slag, 8 parts by weight of bamboo powder slag and 10 parts by weight of water, uniformly mixing, stirring at a rotating speed of 5500r/min for 20min, heating to 90 ℃, keeping the temperature for 20min, cooling to room temperature, and drying to obtain the air-permeable modified additive.
The acid-base modifying layer and the acid-base modifying auxiliary agent are prepared by the following processes: uniformly mixing 40 parts of peanut shells, 4 parts of bamboo shoot shells, 8 parts of activated sludge, 3 parts of lime powder, 15 parts of straws, 2 parts of shell powder, 4 parts of rotten cucumbers and 3 parts of tea seed shell carbon granules according to parts by weight, adding 4 parts of compost decomposing bacteria and 2 parts of crude fiber degrading bacteria, fermenting for 5 days at normal temperature, drying for 9 hours at 60 ℃, and putting into a mincing machine to prepare a granular material a with 10 meshes; putting 8 parts of liquorice, 2 parts of chaff, 7 parts of bran, 2 parts of sawdust, 9 parts of bone meal, 2 parts of urea, 7 parts of monoammonium phosphate and 2 parts of potassium sulfate into a pulverizer to prepare a 40-mesh granular material b, then uniformly mixing the material a and the material b, and putting the mixture into a granulator to prepare the acid-base modifying aid.
Comparative example
Adopting the land treated by the common saline-alkali soil treating agent.
The improved lands obtained by the method for restoring saline-alkali soil into fields of examples 1 to 3 and comparative example were planted, and the air permeability of the improved soil and the number of peppers bearing on a single pepper plant 6 months after the pepper planting were examined, and the results are shown in the following table.
| Experimental project | Degree of air permeability | Number of peppers |
| Example 1 | 96.8 | 23 |
| Example 2 | 95.4 | 21 |
| Example 3 | 96.3 | 23 |
| Comparative example 1 | 59.4 | 12 |
Note: the air permeability is detected by an STZ direct-reading air permeability tester and a water discharge test in the columnar organic glass tube; the yield increase was performed by sowing pepper seeds on the modified saline-alkali land (research institute of agricultural technology in oriental, Beijing Green, King brand for pepper), and sowing the same plant seeds in normal planting soil as a control, and then counting the number of pepper knots on a single plant of pepper after 6 months.
From the above table, it can be seen that:
the method for repairing the saline-alkali soil into the field can enable the improved saline-alkali soil to have excellent air permeability, and the yield of crops can be effectively improved by planting the crops in the improved saline-alkali soil. The added air-permeable modification auxiliary agent is prepared by using hydrogen peroxide, urea, sodium hexametaphosphate, calcium sulfate gypsum powder, bentonite, active silicon dioxide, wood powder slag, bamboo powder slag and water as raw materials, and the prepared air-permeable modification auxiliary agent is applied to the acid-base modification layer, so that the aperture of the acid-base modification layer can be effectively enlarged, the performance of the acid-base modification layer for absorbing surrounding water is improved, the air flow is further enhanced, the air permeability of the modified saline-alkali soil is improved, crops planted in the modified saline-alkali soil can normally grow, and the yield is effectively improved.
The acid-base modifying auxiliary agent contains rich organic matters and mineral substances and rich microorganisms, can meet various nutrient substances and trace elements required by plant growth, can effectively improve the acid-base property and the nutrient content of soil, can effectively improve the fertility of the soil, and improves the planting efficiency and quality.
The above description should not be taken as limiting the invention to the embodiments, but rather, as will be apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which shall be deemed to fall within the scope of the invention as defined by the claims appended hereto.
Claims (6)
1. A saltA method of rehabilitating a field from an alkaline land, the method comprising: removing surface soil of a saline-alkali land, covering a layer of acid-alkali modified layer on the saline-alkali land with the surface removed, arranging a planting soil layer on the acid-alkali modified layer, wherein the depth of the removed surface soil of the saline-alkali land is 40-60cm, the thickness of the acid-alkali modified layer is 3-5cm, the thickness of the planting soil layer is 40-60cm, the air permeability of the acid-alkali modified layer is 10-100, and the seepage coefficient is 10-4-10-7cm/s, the acid-base modifying layer comprises the following raw materials: hydrophobic polyurethane resin, hydrophobic silicon resin, quartz sand, slag, ceramsite, glass bead, polylactic acid, a breathable modification auxiliary agent, an acid-base modification auxiliary agent and a silane coupling agent KH-550.
2. The method for restoring a field in saline-alkali soil according to claim 1, wherein the air permeability modification auxiliary comprises the following raw materials in parts by weight: 10-20 parts of hydrogen peroxide, 15-25 parts of urea, 4-8 parts of sodium hexametaphosphate, 3-9 parts of calcium sulfate gypsum powder, 2-8 parts of bentonite, 4-7 parts of active silicon dioxide, 3-6 parts of wood powder slag, 4-8 parts of bamboo powder slag and 10-20 parts of water.
3. The method for rehabilitating a field in saline-alkali soil according to claim 2, wherein the air permeability modifying additive is prepared by the following process: uniformly mixing 25-35% by mass of hydrogen peroxide, urea and sodium hexametaphosphate, heating in a water bath to 25-35 ℃, stirring at a constant temperature for 5-15min, adding calcium sulfate gypsum powder, uniformly mixing, stirring for 5-15min, cooling in an ice water bath to 0-5 ℃, drying a filter cake at room temperature after suction filtration, adding bentonite, active silicon dioxide, wood powder slag, bamboo powder slag and water, uniformly mixing, stirring at a rotation speed of 3500 plus 5500r/min for 20-40min, heating to 70-90 ℃, preserving heat for 20-40min, cooling to room temperature, and drying to obtain the air-permeable modification auxiliary agent.
4. The method for restoring a field in saline-alkali soil according to claim 1, wherein the acid-base modifying layer and the acid-base modifying auxiliary comprise the following raw materials in parts by weight: 20-40 parts of peanut shells, 4-8 parts of bamboo shoot shells, 4-8 parts of activated sludge, 3-6 parts of lime powder, 5-15 parts of straws, 2-8 parts of shell powder, 2-4 parts of rotten cucumbers, 3-6 parts of tea seed shell carbon granules, 1-4 parts of compost decomposing bacteria, 2-6 parts of crude fiber degrading bacteria, 4-8 parts of liquorice, 2-6 parts of rice husks, 4-7 parts of bran, 2-6 parts of sawdust, 4-9 parts of bone meal, 2-6 parts of urea, 4-7 parts of monoammonium phosphate and 2-6 parts of potassium sulfate.
5. The method for restoring a field in saline-alkali soil according to claim 4, wherein the acid-base modifying layer and the acid-base modifying auxiliary are prepared by the following processes: uniformly mixing peanut shells, bamboo shoot shells, activated sludge, lime powder, straws, shell powder, mashed cucumbers and tea seed shell carbon granules, adding compost decomposing bacteria and crude fiber degrading bacteria, fermenting at normal temperature for 2-5d, drying at 60-80 ℃ for 6-9h, and putting into a blender to prepare a granular material a with 10-30 meshes; putting liquorice, rice husk, bran, wood dust, bone meal, urea, monoammonium phosphate and potassium sulfate into a pulverizer to prepare a granular material b with 20-40 meshes, uniformly mixing the material a and the material b, and putting the mixture into a granulator to prepare the acid-base modifying aid.
6. The method for restoring saline-alkali soil into a field according to claim 1, wherein the raw materials of the acid-alkali soil improvement layer comprise, by weight: 50-100 parts of hydrophobic polyurethane resin, 40-60 parts of hydrophobic silicon resin, 20-40 parts of quartz sand, 10-20 parts of slag, 15-25 parts of ceramsite, 5-15 parts of glass bead, 9-13 parts of polylactic acid, 4-8 parts of breathable modification auxiliary agent, 6-9 parts of acid-base modification auxiliary agent and 5-15 parts of silane coupling agent KH-5505.
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| CN117999897A (en) * | 2024-04-09 | 2024-05-10 | 河北热点科技股份有限公司 | Comprehensive method for treating land salinization pollution of irrigation area |
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Application publication date: 20201215 |