CN113389192A - Physical-chemical-biological combined sand fixation structure and method - Google Patents
Physical-chemical-biological combined sand fixation structure and method Download PDFInfo
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- CN113389192A CN113389192A CN202110698375.XA CN202110698375A CN113389192A CN 113389192 A CN113389192 A CN 113389192A CN 202110698375 A CN202110698375 A CN 202110698375A CN 113389192 A CN113389192 A CN 113389192A
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- 239000010902 straw Substances 0.000 claims abstract description 73
- 239000000126 substance Substances 0.000 claims abstract description 25
- 238000010899 nucleation Methods 0.000 claims abstract description 19
- 230000004888 barrier function Effects 0.000 claims abstract description 17
- 238000009331 sowing Methods 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 10
- 238000007711 solidification Methods 0.000 claims abstract 2
- 230000008023 solidification Effects 0.000 claims abstract 2
- 235000000839 Melilotus officinalis subsp suaveolens Nutrition 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
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- 235000015702 Artemisia filifolia Nutrition 0.000 claims description 6
- 241001670242 Artemisia filifolia Species 0.000 claims description 6
- 241000213996 Melilotus Species 0.000 claims description 6
- 241000209504 Poaceae Species 0.000 claims description 6
- 241000223025 Caragana microphylla Species 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims 6
- 238000011105 stabilization Methods 0.000 claims 6
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- 230000002411 adverse Effects 0.000 abstract description 2
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- 238000004132 cross linking Methods 0.000 abstract 1
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- 230000004083 survival effect Effects 0.000 description 11
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- 235000015097 nutrients Nutrition 0.000 description 3
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- 239000002689 soil Substances 0.000 description 3
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- 239000003153 chemical reaction reagent Substances 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/02—Snow fences or similar devices, e.g. devices affording protection against sand drifts or side-wind effects
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/40—Afforestation or reforestation
Abstract
The invention discloses a physical-chemical-biological cross-linking sand fixation structure and a method, comprising a sand barrier which is laid on a sand surface in a grid shape, wherein the sand barrier has certain height and width, shrubs and herbaceous plant seeds are mixed and sown in a certain proportion and sowing quantity within the width range, and a chemical sand fixation agent is sprayed on the sand surface surrounded by the sand barrier; in the implementation process, the procedures of bundling wheat straw squares, irrigating grass and sowing in a mixed mode and chemically fixing sand are carried out. This application adopts the seeding mode of irritating grass and co-seeding, with the plant seed seeding in the width scope of wheatgrass square, the plant seed relies on the wheatgrass clearance to sprout, grow, no longer receives the adverse effect of solidification sand face, can increase regional interior species abundance and variety, the growth characteristic of make full use of different plants to increased its mutual advantage effect, made it complementary reciprocity in the growth period, formed a new low density, nearly nature afforestation method.
Description
Technical Field
The invention relates to the field of ecological protection and desert control, in particular to a physical-chemical-biological combined sand fixation structure and a method.
Background
Sand damage is a well-known special natural disaster, has high liquidity, engulfs farmlands, villages and road trees in a large amount every year, and brings inconvenience to production, life and outgoing of people. The vegetation in the sand area is rare, the photo-thermal radiation force is strong, the air temperature on the area is high, the humidity is low, the air current is deviated, and the drought is easily formed. Taking the northwest Ningxia region as an example, in the past, desertification control and forestation are carried out for many times for many years, and the treatment effect cannot be long due to the original means and low technical content.
The current sand fixation method in the locality mainly adopts the methods of wheat straw or sand willow square grid method, grass planting, tree planting, fence sand fixation, chemical reagent surface penetration sand fixation and the like, wherein the wheat straw square grid is easy to be weathered and corroded, and the maintenance time is short; the chemical reagent method has extremely high cost and poor material permeability, and is not beneficial to plant growth; the afforestation is the method with the most long effect, but because the water in the desert area is difficult to keep, the grass planting trees are easy to dry and die according to the traditional method.
Meanwhile, the existing afforestation sand control mode has longer time for forming a protection forest, the plants in the seedling stage of shrubs and trees are short, the plant gaps are large, and the protection forest is difficult to form in a short time for fixing surface quicksand to prevent the quicksand from flowing; the sand in the flowing sand dune area is in a flowing state all the time, so that the planted shrubs and arbor seedlings are easily blown down or buried, the survival rate of the shrubs and arbors is low, a protection forest can be formed after multiple planting, and generally, the time for preventing wind and fixing sand is required to be ten years. After plant seeds are sown or saplings are planted, manual watering is needed for improving the survival rate of the saplings, so that the labor cost is undoubtedly increased, and the problems of low water resource utilization rate and water source waste are caused by deep water seepage or natural evaporation through a sand surface after a large amount of water is irrigated.
Furthermore, in the field of sand fixation technology, plant sand fixation and chemical sand fixation need to be performed separately. The plant sand fixation can achieve the purpose of long-acting sand fixation, but the method can not be used under all geological conditions. In places where the plant can not directly fix the sand, chemical sand fixing can be selected, and the chemical sand fixing agent can be hardened and solidified on the sand surface, so that the germination, the emergence, the growth and the development of plant seeds are seriously hindered, the soil breaking rate and the survival rate of the plant seeds are low, and the plant seeds cannot be used together.
Disclosure of Invention
In order to overcome the dilemma, break through the defect that plant sand fixation and chemical sand fixation can not be combined, shorten the effect time of plant sand fixation, and improve the survival rate and the sand fixation effect of plants, the application provides a physical-chemical-biological combined sand fixation structure and a method.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a physical-chemical-biological combined sand fixation structure comprises a sand barrier which is laid on a sand surface in a grid shape, wherein the sand barrier has a certain height and a certain width, shrubs and herbaceous plant seeds are mixed and sown in a certain proportion and sowing quantity within the width range, and a chemical sand fixation agent is sprayed on the sand surface surrounded by the sand barrier.
Furthermore, the sand barrier is a wheat straw square grid tied on a sand surface, the height of the wheat straw square grid is not less than 10cm, the width of the wheat straw square grid is 3-5 cm, and the specification of the wheat straw square grid is a rectangle of 5m by 5 m.
Furthermore, in order to adapt to natural factors such as local wind direction or desertification degree, the wheat straw square can be designed into a triangle or a parallelogram.
Further, the plant seeds for grass-filling and mixed seeding include, but are not limited to, Yangtze firewood, floral sticks, white sand sagebrush, caragana microphylla, and sweet clover; the combination of plant seeds for mixed planting of shrubs includes at least one of shrub plants and at least one of herbaceous plants.
Further, the combination of the plant seeds for mixed sowing of shrubs and grasses includes three kinds of shrubs and one kind of herbaceous plants.
For example, shrub plant can be selected from radix Caraganae Sinicae, floral rod, and herba Artemisiae Annuae, and herb plant can be selected from herba Salvae Strychnifoliae or sweet clover.
Wherein, firewood raising: and (3) a flower stick: white sand sagebrush: the Shadawang or Daghestan sweetclover can be sown according to the proportion of 4: 3-4: 1: 1.
Under special conditions, in areas where desertification is not very serious, shrub pure sowing can be selected.
For example, firewood: the flower sticks can be sown according to the proportion of 1-2: 1.
Furthermore, the seeding quantity of the mixed seeding of the shrubs and the grass is 2 kg/mu.
Further, the spraying amount of the chemical sand fixing agent is 40 kg/mu.
The invention also aims to provide a physical-chemical-biological combined sand fixing method.
The first step is as follows: check for binding wheat straw
Bundling wheat straw squares according to the specification of 5m by 5m to ensure that the height of the wheat straw squares is not less than 10cm and the width of the wheat straw squares is 3-5 cm;
the second step is that: mixed seeding of shrubs and grasses
At least one of shrub plants and at least one of herbaceous plants are mixedly sown in the gaps of the wheat straws in the wheat straw square according to a certain proportion and sowing quantity;
the third step: chemical sand fixation
Spraying a chemical sand-fixing agent on the sand surface surrounded by the wheat straw squares according to a certain amount.
The invention has the following beneficial effects:
the application improves the existing wheat straw square grids of 1m by 1m into the specification of 5m by 5m, thereby greatly reducing the labor amount for binding the wheat straw square grids; the specification of the wheat straw square lattice, which is a physical sand fixation structure, can be enlarged by 25 times, and a physical-chemical-biological combined complementary sand fixation method is adopted:
the sand barrier formed by the wheat straw square has a certain height, can play a role of primarily fixing sand as a physical sand fixing structure, promotes wind and quicksand to flow around, reduces wind speed, simultaneously, plants growing in wheat straw gaps of the wheat straw square can effectively weaken the damage of the quicksand and strong wind to the plants by virtue of the barrier formed by the wheat straw, and can form root fixing and protecting effects on early-growing germinating seeds or small tree seedling roots, thereby being beneficial to the growth of the plants and improving the survival rate; because the wheat straw belongs to organic matters and has certain water retention, the wheat straw square can provide organic nutrients required by plant growth after being decayed and degraded for 2-3 years, and has a certain water storage effect in rainy seasons; the wheat straw square has the function of reducing water loss, and meanwhile, the heat preservation, ventilation and water storage effects are realized, the plant root system can be protected, and the survival rate of crops is improved.
The sand surface between the wheat straw squares forms a chemical sand fixation structure. The chemical sand-fixing agent is sprayed on the latticed desert surface layer to be solidified into a mulching film, so that the effects of soil conservation, sand fixation and prevention of large-amount evaporation of underground water are achieved; because the plant seeds are planted in the wheat straw instead of the traditional latticed sand surface, the problems that the plant seeds are difficult to germinate, unearthed and limited in growth and development caused by the existing chemical sand fixation are solved; the sand surface after film forming is adhered into a piece, so that the existence of drift sand is basically avoided, the plants can be prevented from being buried by the drift sand in the early germination stage, favorable conditions are provided for the growth of the plants, the piece-shaped sand surface after film forming also has a rain collecting effect, and rainwater can be collected to gaps of wheat straw squares in rainy seasons.
Biological sand fixation structures are formed in the wheat straw grids. The method adopts a seeding mode of mixed seeding of shrubs and grasses, plant seeds are sown in the width range of the wheat straw square, the plant seeds germinate and grow in the gaps of the wheat straws without being adversely affected by solidified sand surfaces, and meanwhile, the plant seeds are sheltered by the wheat straws, so that the survival rate of the plants is greatly improved, and the sand fixation effect is exerted in stages; the grass and shrub mixed sowing mode can increase the abundance and diversity of species in the area, the combination can be at least one of shrub plants and at least one of herbaceous plants, the herbaceous plants can play a role in sand fixation in a short time and maintain for about 1 year due to the fact that the herbaceous plants germinate and grow fast, meanwhile, favorable conditions are provided for the growth of the shrubs, the herbaceous plants gradually quit along with the growth of shrub seedlings, the shrubs start to play a role in sand fixation, biological sand barriers are completely formed in about 2-3 years, and the function of sand fixation is played for a long time. The method makes full use of the growth characteristics of different plants, increases the mutual benefit, and enables the plants to complement and mutually benefit in the growth period to form a novel low-density and near-natural afforestation method.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment is a physical-chemical-biological combined sand fixation structure, which comprises wheat straw squares bundled on a sand surface in a grid shape, wherein the height of the wheat straw squares is not less than 10cm, the width of the wheat straw squares is 3-5 cm, and the specification of the wheat straw squares is a rectangle of 5m by 5 m. In order to adapt to natural factors such as local wind direction or desertification degree, the wheat straw square can be designed into a triangle or a parallelogram and the like.
Different from the prior art, in the embodiment, shrubs and herbaceous plant seeds are mixed and sown in a certain proportion and sowing quantity within the width range of the wheat straw square grids, and a chemical sand fixing agent is sprayed on a sand surface surrounded by the wheat straw square grids.
The sand barrier formed by the wheat straw square has a certain height, plays a role in primarily fixing sand, and the plants growing in the wheat straw gaps of the wheat straw square can effectively weaken the damage of quicksand and strong wind to the plants by virtue of the barrier formed by the wheat straw, so that the roots of the early-growing germinated seeds or the roots of the small tree seedlings are fixed and protected, the growth of the plants is facilitated, and the survival rate is obviously improved.
The plant seeds for grass-filling mixed seeding include but are not limited to Yangtze firewood, flower sticks, white sand sagebrush, caragana microphylla, Shalasianthus trifolius; the combination of the plant seeds for the mixed sowing of shrubs includes a plurality of shrub plants and at least one of herbaceous plants.
For example, the combination of plant seeds sowed in a mixed manner may be three species of shrubs and one species of herbs.
The shrub plant can be selected from radix seu caulis Caraganae Sinicae, floral rod, and herba Artemisiae Annuae, and the herb plant can be selected from herba Salvae Amurensis or sweet clover.
Wherein, firewood raising: and (3) a flower stick: white sand sagebrush: the Shadawang or Daghestan sweetclover can be sown according to the proportion of 4: 3-4: 1: 1.
Under special conditions, in areas where desertification is not very serious, shrub pure sowing can be selected.
For example, firewood: the flower sticks can be sown according to the proportion of 1-2: 1.
In the embodiment, the seeding amount of the mixed seeding of the shrubs and the grass is 2 kg/mu.
The seeding mode that the embodiment adopted the grass of irritating to sow with mixed, with the plant seed seeding in the width scope of wheatgrass square, can improve the survival rate of plant by a wide margin, make the grass of irritating plant stage by stage, play the effect of fixing sand in the period: as the herbaceous plant germinates and grows faster, the sand fixing effect can be achieved in a short time, for example, sweet clover can grow to 20cm in 2 months and maintain for about 1 year, and favorable conditions can be provided for the growth of shrubs which emerge; with the growth of shrub seedlings, herbaceous plants gradually quit in about 1-2 years, and at the moment, shrubs such as artemisia sphaerocephala begin to play a role, and biological sand barriers are completely formed in about 2-3 years.
The grass-filling mixed sowing mode can increase the richness and diversity of species in the area, and fully utilize the growth characteristics of different plants to make the plants complementary and reciprocal in the growth period.
In this example, the spraying amount of the chemical sand-fixing agent was 40 kg/mu.
The chemical sand-fixing agent is sprayed on the surface layer of the latticed desert to be solidified into a mulching film, so that the effects of soil conservation, sand fixation and prevention of large-amount evaporation of underground water are achieved. Because the plant seeds are planted in the wheat straw instead of the traditional latticed sand surface, the problems that the plant seeds are difficult to germinate, unearthed and limited in growth and development caused by the existing chemical sand fixation are solved.
The sand surface after film forming is adhered into a piece, so that the existence of drift sand is basically avoided, the plants can be prevented from being buried by the drift sand in the early germination stage, favorable conditions are provided for the growth of the plants, the piece-shaped sand surface after film forming also has a rain collecting effect, and rainwater can be collected to gaps of wheat straw squares in rainy seasons. Because the wheat straw belongs to organic matters, the wheat straw has a certain water storage effect and can provide organic nutrients and water needed by plant growth.
After 2-3 years, the wheat straws in the wheat straw square are gradually rotten and degraded, and organic matters of the wheat straws can provide valuable nutrients for plants in desert, so that shrubs thrive; with the lapse of time, the flaky sand surface after the film is formed for 3-5 years also gradually begins to collapse and collapse, but at the moment, the biological sand barrier is basically formed and can stably play a sand fixing role for a long time.
The application relates to a novel low-density and near-nature afforestation method. Due to the high plant survival rate, the planting density does not need to be overlarge, the plants are won with the amount, the plant seeds are saved, and the specification of the wheat straw square can be designed to be 5m by 5m, so that the labor cost and the manpower and material resources are greatly reduced.
The embodiment also provides a physical-chemical-biological combined sand fixation method, which comprises the following steps:
the first step is as follows: check for binding wheat straw
Bundling wheat straw squares according to the specification of 5m by 5m to ensure that the height of the wheat straw squares is not less than 10cm and the width of the wheat straw squares is 3-5 cm;
for a sand dune broken by the wind, the sand ridge can be subjected to gentle treatment, and wheat straw square grids can be tied after the slope is reduced;
for areas without high sand dunes and with gentle moving sand lands, wheat straw blocking belts with the distance of 5m can be bundled at the air opening, the edges of the construction periphery are all bundled by the wheat straw belts, and then wheat straw squares are bundled.
The second step is that: mixed seeding of shrubs and grasses
At least one of shrub plants and at least one of herbaceous plants are mixedly sown in the gaps of the wheat straws in the wheat straw square according to a certain proportion and sowing quantity;
the method does not need fertilization and watering in the whole process, so the second step can be implemented before rainy season in order to further improve the germination and soil-out rate of the seeds.
The third step: chemical sand fixation
Spraying a chemical sand-fixing agent on the sand surface surrounded by the wheat straw squares according to a certain amount.
The chemical sand fixation has the main function of ensuring the survival and fixation of the sand fixation plants, and the survived sand fixation plants can make up for the defect of short period of chemical sand fixation.
For desert areas with better water source conditions, such as the yellow river, the sand surface can be wetted by water, and then the chemical sand-fixing agent is sprayed to increase the penetration depth.
The spraying is not suitable to be too fast or too slow, nor too high or too low; and the spraying is selected as much as possible in windless and hot seasons.
It should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A physical-chemical-biological combined sand fixation structure is characterized in that: the sand barrier is laid on a sand surface in a grid shape, has certain height and width, is mixed with shrubs and herbaceous plant seeds according to a certain proportion and sowing quantity within the width range, and is sprayed with a chemical sand fixing agent on the sand surface surrounded by the sand barrier.
2. The sand stabilization structure of claim 1, wherein: the sand barrier is a wheat straw square grid tied on a sand surface, the height of the wheat straw square grid is not less than 10cm, the width of the wheat straw square grid is 3-5 cm, and the specification of the wheat straw square grid is a rectangle with the size of 5m x 5 m.
3. The sand stabilization structure of claim 1, wherein:
the plant seeds for grass-filling mixed seeding include but are not limited to Yangtze firewood, flower sticks, white sand sagebrush, caragana microphylla, Shalasianthus trifolius;
the combination of plant seeds for mixed planting of shrubs includes at least one of shrub plants and at least one of herbaceous plants.
4. A sand stabilization structure according to claim 3, wherein:
the combination of the plant seeds for mixed sowing of shrubs and grasses comprises three types of shrubs and one type of herbaceous plant.
5. A sand stabilization structure according to claim 3, wherein:
the shrub plant is herba Carpesii Cernui, HUAGU, and herba Artemisiae Annuae, and the herb plant is herba Salvae Amurensis or sweet clover;
wherein, firewood raising: and (3) a flower stick: white sand sagebrush: and carrying out mixed sowing on the Shazaowang or sweet clover according to the proportion of 4: 3-4: 1: 1.
6. The sand stabilization structure of claim 1, wherein:
the seeding quantity of the mixed seeding of the shrubs and the grass is 2 kg/mu.
7. The sand stabilization structure of claim 1, wherein:
the spraying amount of the chemical sand solidification agent is 40 kg/mu.
8. A physical-chemical-biological combined sand fixation method is characterized in that: the method comprises the following steps
The first step is as follows: check for binding wheat straw
Bundling wheat straw squares according to the specification of 5m by 5m to ensure that the height of the wheat straw squares is not less than 10cm and the width of the wheat straw squares is 3-5 cm;
the second step is that: mixed seeding of shrubs and grasses
At least one of shrub plants and at least one of herbaceous plants are mixedly sown in the gaps of the wheat straws in the wheat straw square according to a certain proportion and sowing quantity;
the third step: chemical sand fixation
Spraying a chemical sand-fixing agent on the sand surface surrounded by the wheat straw squares according to a certain amount.
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