CN114271060B - Ecological restoration blanket for desert gobi soil and application method thereof - Google Patents

Abstract

The invention discloses an ecological restoration blanket for desert gobi soil, which is characterized in that special fixing nails are arranged in the ecological restoration blanket, seeds of specific plants are placed in the fixing nails, the shapes of the fixing nails at the front and rear stages are changed by utilizing rapid rooting and germination of the plant seeds, the functional time of the fixing nails is effectively prolonged, the later fixing effect of the fixing nails is further enhanced, and the sand fixing function of the desert soil is remarkably improved. The mode of combining the herbaceous plants and the shrub plants in a specific proportion is adopted, so that the restoration effect of the whole ecological restoration blanket is enhanced, and the restoration function duration is longer.

Description

Ecological restoration blanket for desert gobi soil and application method thereof

Technical Field

The invention belongs to the field of ecological environment treatment, and particularly relates to an ecological restoration blanket for desert gobi soil.

Background

At present, the ecological blanket is evolved from a vegetation zone, is an integrated ecological slope protection material matched with composite fiber fabrics, reverse-filtering geotextiles, diversified grass seeds, turf and the like, and can achieve the effects of slope ecological restoration and landscape greening while preventing the river bank from hydraulic erosion and soil loss. The desertification degree of the land in a plurality of areas in China is serious, if the existing ecological blanket is directly used for preventing and controlling sand, the sand prevention and controlling sand relate to wide area of areas, water resources are lack, the proper ecological blanket specially aiming at desertification soil is lacked, and the sand prevention and control effect is very limited.

The ecological blanket specially used for desert conditions has relatively few prior art with the functions of preventing and controlling sand. For example, the sand control ecological blanket provided by the patent CN208836714U is provided with a reverse filtering layer, a fertilizer layer, a fiber fabric layer, fixing nails, a water retaining part and a water storage cushion are arranged on two sides of the blanket, and the growth of grass seeds is facilitated. The ecological blanket has limited water storage capacity of the reverse filtering layer, the fertilizer layer, the water retaining part and other structural designs, and has very limited fixing effect only by virtue of the fixing nails and friction protrusions on the fixing nails, so that a better sand prevention and fixation effect cannot be achieved.

For example, the patent CN208242362U provides an ecological blanket for controlling sand and controlling desertification for greening and controlling the cold and warm zone semi-desertification area, the ecological is provided with ground nails and a plurality of growth basal boxes containing plant seeds, however, the ecological blanket is only provided with the ground nails at four vertexes of each blanket, the early sand prevention and sand fixation effect is very limited, and the water-retaining agent layer cannot be arranged and cannot retain most of water.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an ecological restoration blanket for desert gobi soil, which is realized by the following technology.

An ecological restoration blanket for desert gobi soil comprises a reverse filtering layer, a matrix fertilizer layer and a water-retaining layer from top to bottom; a plurality of fixing nails vertically penetrating through the ecological restoration blanket downwards are arranged; the fixing nails are arranged in a matrix on the ecological restoration blanket, and the interval between every two adjacent fixing nails is 5-10cm;

the raw materials of the matrix fertilizer layer comprise, by weight, 15-25% of coated plant seeds A, 45-55% of decomposed straw manure, 15-25% of cork scraps and 8-12% of a first adhesive; the water-retaining layer is formed by pressing 98% of super absorbent resin and 2% of a second adhesive according to mass fraction; a fabric layer is additionally arranged and wrapped outside the water-retaining layer;

the fixing nail comprises an outer shell and an inner shell, wherein the outer shell consists of 98% of modified sand sagebrush gum and 2% of adhesive according to mass fraction, and the modified sand sagebrush gum is prepared by grafting and modifying common sand sagebrush gum through a silane coupling agent; the inner shell is made of biodegradable materials and is of a hollow tubular structure; a plurality of coated plant seeds B are placed on the section plates;

the coating seeds A consist of drought-enduring herb seeds and shrub seeds coated with the coating material A on the surfaces, and the dosage ratio of the herb seeds to the shrub seeds is 6-8:1; the coating seed B is at least one seed of Salix alba, caragana microphylla, salix psammophila, hippophae rhamnoides, semen Cajani and Cassia occidentalis with the surface sprayed with the coating material B.

In the ecological restoration blanket, the reverse filtering layer is composed of raw materials such as sand, broken stone and pebble which are commonly used in the market, so that sprayed water or rainfall is guaranteed to quickly go deep into the substrate fertilizer layer and the water-retaining layer.

The ecological restoration blanket is provided with the fixing nails which are arranged in a matrix, and the fixing nails can be bound on the ecological restoration blanket by ropes made of degradable fiber materials such as collagen fibers, polycaprolactone, polyglycolic acid, polylactic acid-glycolic acid copolymer, dioxanone polymer and the like. The fixing nails are formed by pressing biodegradable materials, the outer shell is modified artemisia glue, the inner shell is made of biodegradable materials (such as polylactic acid and the like), the inside of the inner shell is directly provided with a segment which is the same as the materials of the inner shell when the fixing nails are pressed, the segment is provided with shrub plant seeds which can root rapidly and are subjected to coating treatment, and the position of the segment can be adjusted according to actual conditions. In the early stage of loading the ecological restoration blanket, the fixing nails can exert a very good fixing effect, along with regular water spraying, the shrub seeds inside begin to rapidly root and germinate, meanwhile, the inner shell is gradually degraded, the modified sand sagebrush gum of the outer shell and the water sprayed and permeated gradually act, a very good solidification and agglomeration effect is achieved on surrounding desertification soil, and the functions of sand prevention and sand fixation are further exerted in the middle stage. With the further degradation of degradable materials in the inner shell of the fixing nail and the action of the modification of the sand sagebrush gum by the outer shell, the fixing nail is gradually disintegrated, the root system of the shrub seeds in the fixing nail is gradually developed, and the corresponding sand fixing action of the ecological restoration blanket is exerted by continuously growing instead of the fixing nail. The fixing nails are designed in such a way that when the plant growth vigor in the ecological restoration blanket is weak, the fixing nails provide enough functions of wind prevention and sand fixation, so that the blowing up of wind sand in the ecological restoration blanket is avoided; and as the root systems of the shrubs which root rapidly in the fixing nails grow, the shrubs can provide stronger and more stable wind-proof sand-fixing effect than the fixing nails at the later stage.

In the matrix fertilizer layer, grass seeds and shrub seeds are matched for use, and a specific dosage proportion (the dosage proportion of the grass seeds to the shrub seeds is 6-8:1, and the optimal proportion is 6.5:1) is adopted to realize grass irrigation combination, so that the grass plants are short in growth period and high in planting speed, the shrubs are long in germination period, strong in soil fixing and drought resisting capabilities, developed in root system, and good growth environments can be built for the shrub seeds in the early stage of the grass plants, so that the sand fixing and repairing effects of the ecological repairing blanket are better. After the shrubs grow stably, arbor can be planted subsequently. The first binder is commercially available guar gum, white latex, yellow gum, etc.

The water-retaining layer is formed by pressing common super absorbent resin in the market through an adhesive, and the adhesive can be made of common materials such as carboxymethyl cellulose, sodium carboxymethyl cellulose, microcrystalline cellulose and the like. The exterior of the water-retaining layer is covered with a water-permeable fabric cloth, such as cotton or other composite fiber material. A plurality of elastic fiber ropes (such as diene elastic fibers, polyurethane fibers, polyether ester elastic fibers, polyolefin elastic fibers or composite elastic fibers produced by other manufacturers) can be additionally connected between the fabric cloth on the upper surface of the water-retaining layer and the fabric cloth on the lower surface of the water-retaining layer, so that the water-retaining layer can always keep the whole after the high-water-absorption resin absorbs water to expand and is dehydrated to restore.

Preferably, the coating material A comprises 85-95% of compound fertilizer, 0.5-1% of trace element fertilizer, 1-3% of gibberellin, 0.01-0.1% of indolebutyric acid, 0.05-0.5% of naphthylacetic acid and 3-11% of film forming agent according to mass fraction.

More preferably, the coating material A comprises 88% of compound fertilizer, 0.8% of trace element fertilizer, 1.8% of gibberellin, 0.05% of indolebutyric acid, 0.35% of naphthylacetic acid and 9% of film forming agent according to mass fraction.

Preferably, the coating material B comprises 78-85% of compound fertilizer, 2-4% of trace element fertilizer, 2-5% of gibberellin, 0.2-0.5% of indolebutyric acid, 0.2-0.6% of naphthylacetic acid and 10-13% of film forming agent according to mass fraction.

More preferably, the coating material B comprises 80% of compound fertilizer, 3.2% of trace element fertilizer, 4.2% of gibberellin, 0.34% of indolebutyric acid, 0.26% of naphthylacetic acid and 12% of film forming agent according to mass fraction.

Preferably, the raw materials of the matrix fertilizer layer comprise 20% of coated plant seeds A, 50% of decomposed straw manure, 20% of cork scraps and 10% of a first adhesive in percentage by weight.

The preparation method of the coated seed A or the coated seed B comprises the following steps: weighing the raw materials of the coating material A or the coating material B, adding 10 times of water, uniformly mixing to obtain corresponding coating solution, soaking the herb seeds and the shrub seeds in the coating solution for 25-30min, and drying to obtain the coating.

Preferably, the fixing nails are upwards exposed out of the upper surface of the reverse filtering layer, and a plurality of first through holes are formed in the side wall of one exposed end of each fixing nail; the bottom side of staple is equipped with a plurality of second through-holes. The purpose of this design is when rainfall or carry out the drenching, and partial hydroenergy is with first through-hole through capillary effect slow infiltration inside the staple inflow, further promotes the rooting and sprouting of the interior capsule bush seed of staple.

Preferably, the adjacent fixing nails are connected by ropes made of biodegradable materials to form a grid structure, and the grid structure is horizontally arranged below the water-retaining layer. The fixing nails are connected by the ropes, so that the sand fixing effect can be further improved, the ecological restoration blanket can be firmly fixed in desert soil, and the guiding can be provided for root system growth.

Preferably, the herb seed is at least one seed of bermuda grass, curved leaf teff, sand schwann, perennial ryegrass, wheatgrass, alfalfa, awarvensis, peganum harmala, sand sagebrush; the shrub seeds are seeds of at least one of sea buckthorn, salix psammophila and caragana microphylla.

The invention also provides a using method of the ecological restoration blanket, which is characterized by comprising the following steps:

s1, burying an ecological restoration blanket under desert soil, wherein the burying depth is 5-10cm, and covering the desert soil again;

s2, spraying water for the first time at the place where the ecological restoration blanket is buried according to the dosage of 10-12 t/mu;

s3, after 2-3d, spraying water for the second time at the place where the ecological restoration blanket is buried according to the dosage of 15-20 t/mu;

s4, after every 3d, water is supplemented at the place where the ecological restoration blanket is buried according to the dosage of 4-6 t/mu until plants grow out of more than 85% of the fixed nails.

The method is specially designed for the ecological restoration blanket of the invention, after the ecological restoration blanket is buried, the first water spraying is carried out to build a preliminary growing environment, so that seeds in the ecological restoration blanket are quickly adapted, plants in the fixing nails can quickly root and germinate after absorbing water, the water spraying amount is small, the water absorption and degradation of the inner and outer shells of the fixing nails are very slow, and most of the spraying water penetrates into the reverse filtering layer to enter the matrix fertilizer layer to be intercepted, and the rest part of the spraying water is intercepted by the water retaining layer. The second water spraying is to further promote the growth of plant seeds and fully exert the function of water retention layer

Compared with the prior art, the invention has the following advantages:

1. by arranging special fixing nails in the ecological restoration blanket and putting seeds of specific plants in the fixing nails, the form of the fixing nails at the front and rear stages is changed by utilizing rapid rooting and germination of the plant seeds, so that the functional time of the fixing nails is effectively prolonged, the later fixing effect of the fixing nails is further enhanced, and the sand fixing function of desert soil is remarkably improved.

2. The mode of combining the herbaceous plants and the shrub plants in a specific proportion is adopted, so that the restoration effect of the whole ecological restoration blanket is enhanced, and the restoration function duration is longer.

Drawings

Fig. 1 is a schematic structural view of an ecological restoration blanket of embodiment 1;

fig. 2 is a schematic view showing the internal structure of a staple of the ecological restoration blanket of embodiment 1;

fig. 3 is a schematic structural view of an ecological restoration blanket of embodiment 10;

fig. 4 is a schematic structural view of a staple of the ecological restoration blanket of embodiment 10;

in the figure: 1. a reverse filtration layer; 2. a matrix fertilizer layer; 3. a water-retaining layer; 301. a composite fabric layer; 4. fixing nails; 5. an inner case; 501. segment; 6. a housing; 7. a first through hole; 8. a second through hole; 9. a rope; 10. a grid-like structure; 11. an elastic fiber rope.

Detailed Description

The following description of the present invention will be made clearly and fully, and it is apparent that the embodiments described are only some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present invention, are within the scope of the present invention.

The ecological restoration blanket provided in the following examples and comparative examples comprises a reverse filtration layer 1, a matrix fertilizer layer 2 and a water retention layer 3 from top to bottom as shown in fig. 1 and 2 unless otherwise specified; a plurality of fixing nails 4 vertically penetrating through the ecological restoration blanket downwards are arranged; the fixing nails 4 are arranged in a matrix on the ecological restoration blanket, and the interval between the adjacent fixing nails 4 is 10cm.

The length of the fixing nail 4 is 35cm, firstly, polylactic acid is adopted to press into an inner shell 5 with an inner hollow tubular structure, then 98% of modified artemisia glue and 2% of adhesive are used to press into an outer shell 6 outside the inner shell 5, a segment 501 is horizontally arranged in the inner shell 5, and salix psammophila seeds with the surface sprayed with a coating material B are placed on the segment 501. The modified sand sagebrush gum is prepared by uniformly stirring and mixing common sand sagebrush gum and a silane coupling agent, wherein the dosage of the silane coupling agent is 3 percent of that of the common sand sagebrush gum. The water-retaining layer 3 is formed by pressing 98% of super absorbent resin and 2% of a second adhesive according to mass fraction; a composite fabric layer 301 additionally provided with cotton threads and polyurethane fibers is wrapped outside the water-retaining layer 3.

The coating seed A consists of drought-enduring herb seeds and shrub seeds coated with the coating material A on the surfaces; the coated seeds B are seeds of salix psammophila with the surface sprayed with the coating material B. The herb seed is seed of Saprolegnia, and the shrub seed is seed of Hippophae rhamnoides.

The preparation method of the used decomposed straw manure comprises the following steps: the straw is crushed and then is uniformly mixed with the excrement of fresh people or animals according to the weight ratio of 1:1, the mixture is added with a commercial decomposing inoculant, and then the mixture is piled in open air, the piling height is 30-35cm, the water content is kept to be about 60%, the mixture is turned once every 3d, and the decomposition is completed after the mixture is turned twice.

The ecological restoration blanket provided in the following examples and comparative examples were used according to the following methods unless specifically stated:

s1, burying an ecological restoration blanket under desert soil, wherein the burying depth is 10cm, and covering the desert soil again;

s2, water is sprayed for the first time at the place where the ecological restoration blanket is buried according to the dosage of 12 t/mu;

s3, after 3d, water is sprayed for the second time at the place where the ecological restoration blanket is buried according to the dosage of 18 t/mu;

s4, after every 3d, water is supplemented at the place where the ecological restoration blanket is buried according to the use amount of 6 t/mu until plants grow out of more than 85% of the fixed nails.

Example 1

As shown in fig. 1 and 2, in the ecological restoration blanket for desert gobi soil provided in this embodiment, the raw materials of the matrix fertilizer layer used comprise, by weight, 20% of coated plant seeds a, 50% of decomposed straw manure, 20% of cork scraps, and 10% of a first binder. The formula of the coating material A used for coating the seeds A is as follows: 88% of compound fertilizer, 0.8% of trace element fertilizer, 1.8% of gibberellin, 0.05% of indolebutyric acid, 0.35% of naphthylacetic acid and 9% of film forming agent. In the coated seed A, the dosage ratio of the herbaceous plant seeds to the shrub plant seeds is 6.5:1; the coating material B used for coating the seeds B comprises 80% of compound fertilizer, 3.2% of trace element fertilizer, 4.2% of gibberellin, 0.34% of indolebutyric acid, 0.26% of naphthylacetic acid and 12% of film forming agent according to mass fraction.

Example 2

The difference between the ecological restoration blanket for desert gobi soil provided in this embodiment and embodiment 1 is that the formula of the coating material a used for coating the seeds a is: 95% of compound fertilizer, 0.5% of trace element fertilizer, 1% of gibberellin, 0.01% of indolebutyric acid, 0.49% of naphthylacetic acid and 3% of film forming agent.

Example 3

The difference between the ecological restoration blanket for desert gobi soil provided in this embodiment and embodiment 1 is that the formula of the coating material a used for coating the seeds a is: 85% of compound fertilizer, 1% of trace element fertilizer, 3% of gibberellin, 0.1% of indolebutyric acid, 0.05% of naphthylacetic acid and 10.85% of film forming agent.

Example 4

The difference between the ecological restoration blanket for desert gobi soil provided in this example and example 1 is that the usage ratio of herb seeds and shrub seeds in the coated seeds a is 8:1.

Example 5

The difference between the ecological restoration blanket for desert gobi soil provided in this example and example 1 is that the usage ratio of herb seeds and shrub seeds in the coated seeds a is 6:1.

Example 6

The ecological restoration blanket for desert gobi soil provided by the embodiment is different from the embodiment 1 in that the coating material B comprises, by mass, 85% of a compound fertilizer, 2.2% of a trace element fertilizer, 2% of gibberellin, 0.2% of indolebutyric acid, 0.6% of naphthylacetic acid and 10% of a film forming agent.

Example 7

The ecological restoration blanket for desert gobi soil provided by the embodiment is different from the embodiment 1 in that the coating material B comprises 78% of compound fertilizer, 4% of trace element fertilizer, 5% of gibberellin, 0.5% of indolebutyric acid, 0.2% of naphthylacetic acid and 12.3% of film forming agent according to mass fraction.

Example 8

The ecological restoration blanket for desert gobi soil provided in this example is different from example 1 in that the raw materials of the matrix fertilizer layer used comprise, by weight, 25% of coated plant seeds a, 45% of decomposed straw manure, 20% of cork scraps, and 10% of a first binder.

Example 9

The ecological restoration blanket for desert gobi soil provided in this example is different from example 1 in that the raw materials of the matrix fertilizer layer used comprise, by weight, 15% of coated plant seeds a, 55% of decomposed straw manure, 20% of cork scraps, and 10% of a first binder.

Example 10

As shown in fig. 3 and 4, the ecological restoration blanket for desert gobi soil provided in this embodiment is different from embodiment 1 in that the fixing nails 4 are exposed upward from the surface of the filtering layer 1, and a plurality of first through holes 7 are provided on the side wall of the exposed end of the fixing nails 4; the side surface of the bottom end of the fixed nail 4 is provided with a plurality of second through holes 8; the adjacent fixing nails 4 are connected by ropes 9 made of biodegradable materials to form a grid structure 10, and the grid structure is horizontally arranged below the water-retaining layer 3; a plurality of elastic fiber ropes can be additionally connected between the fabric cloth on the upper surface of the water-retaining layer 3 and the fabric cloth on the lower surface.

Comparative example 1

The ecological restoration blanket for desert gobi soil provided in this comparative example is different from example 1 in that the amount of herb seeds and shrub seeds in the coated seed a is 9:1.

Comparative example 2

The ecological restoration blanket for desert gobi soil provided in this comparative example is different from example 1 in that the amount of herb seeds and shrub seeds in the coated seed a is 5:1.

Comparative example 3

The ecological restoration blanket for desert gobi soil provided in this comparative example is different from example 1 in that the coated seeds a are all herbaceous plant seeds.

Comparative example 4

The ecological restoration blanket for desert gobi soil provided in this comparative example is different from example 1 in that the coated seeds a are all shrub seeds.

Comparative example 5

The ecological restoration blanket for desert gobi soil provided in this comparative example is different from that of example 1 in that a plurality of sweet clovers sprayed on the surface of coating material B are placed in the hollow tubular structure of the inner shell of the staple.

Comparative example 6

The ecological restoration blanket for desert gobi soil provided in this comparative example is different from example 1 in that no seeds are placed in the hollow tubular structure of the inner casing of the staple.

Comparative example 7

The ecological restoration blanket for desert gobi soil provided in this comparative example is different from example 1 in that the fixing nails are made of ABS material commonly used in ecological blanket production and are solid structures, and no seeds are placed inside.

Application example 1: evaluation of sand fixation effect of ecological restoration blanket and judgment of plant growth condition

1. The test method comprises the following steps:

(1) taking desert soil (volume weight about 1.62 g/cm) ³ ) Mixing, and loading into a plurality of containers with length, width and height of 90 cm;

(2) burying the ecological restoration blanket in the embodiment below desert soil, covering the desert soil again at a burying depth of 15cm, and spraying water while stirring the soil in the whole container, wherein the water spraying dosage is 12 t/mu (namely 18 kg/square meter);

(3) after 3d, the soil is sprayed with water again according to the dosage of 18 t/mu (namely 27 kg/square meter);

(4) and (3) after every 3d, supplementing water to the place where the ecological restoration blanket is buried according to the amount of 6 t/mu, growing plants in 90% of the fixing nails after 45d, and stopping water spraying.

(5) Slightly digging desert soil, taking out the plants which are communicated with the ecological restoration plate, observing the growth conditions of the plants in the fixed nails and the ecological blanket substrate fertilizer layer, and measuring the maximum depth (cm) of the growth of the roots of the plants in the fixed nails and the substrate fertilizer layer in the soil by using a tape measure; the desert soil was excavated, the maximum consolidation thickness (cm) of the desert soil of the ecological restoration blankets of examples 1 to 10, comparative examples 1 to 7 was measured with a tape measure, and the area of the desert soil near the plant roots was defaulted to have been consolidated. The measurement results are shown in table 1 below.

TABLE 1 evaluation of Sand fixation Effect of ecological restoration blanket and determination of plant growth Condition

/>

As can be seen from the above table, when the ratio of the herb seeds to the shrub seeds in the matrix fertilizer layer of the ecological blanket is different by the comparative examples 1, 4, 5 and comparative examples 1 to 4, the overall sand fixation effect of the ecological blanket will be affected due to the difference in growth rates of the two; when all the coating seeds A of the matrix fertilizer layer are herbaceous plant species, the consolidation thickness of the ecological blanket to the desert soil is mainly generated by the fixed nails; when the coated seeds a of the matrix fertilizer layer are all shrub seeds, the initial sand fixation effect is not ideal because the shrub seeds grow slowly.

As is evident from comparative examples 1, 2, 3, 6, 7, the respective ratios of the raw materials of the coating material A and the coating material B have a significant effect on the germination and growth of the corresponding plant seeds.

It is understood from comparative examples 1, 8, and 9 that the respective ratios of the raw materials of the matrix fertilizer layer have a significant effect on the growth of seeds therein.

It is apparent from comparative examples 1 and 10 that the plant growth in the staples can be promoted to some extent by optimizing the structure of the staples.

As can be seen from comparative example 1 and comparative examples 5 to 7, when the anchor nails are replaced with herbal seeds, or no herbal seeds are added, or the anchor nails are replaced with common ABS nails on the market, the thickness of the consolidated soil is reduced, the sand fixation and the sand prevention of the ecological blanket are affected, and the ecological environment is improved.

Claims (7)

1. An ecological restoration blanket for desert gobi soil is characterized by comprising a reverse filtering layer, a matrix fertilizer layer and a water-retaining layer from top to bottom; a plurality of fixing nails vertically penetrating through the ecological restoration blanket downwards are arranged; the fixing nails are arranged in a matrix on the ecological restoration blanket, and the interval between every two adjacent fixing nails is 5-10cm;

the raw materials of the matrix fertilizer layer comprise, by weight, 15-25% of coated plant seeds A, 45-55% of decomposed straw manure, 15-25% of cork scraps and 8-12% of a first adhesive; a fabric layer is additionally arranged and wrapped outside the water-retaining layer;

the fixing nail comprises an outer shell and an inner shell, wherein the outer shell consists of 98% of modified sand sagebrush gum and 2% of adhesive according to mass fraction, and the modified sand sagebrush gum is prepared by grafting and modifying common sand sagebrush gum through a silane coupling agent; the inner shell is made of biodegradable materials and is of a hollow tubular structure; a plurality of coated plant seeds B are placed on the section plates; the fixing nails are upwards exposed out of the upper surface of the reverse filtering layer, and a plurality of first through holes are formed in the side wall of one exposed end of each fixing nail; a plurality of second through holes are formed in the side face of the bottom end of the fixed nail; the adjacent fixing nails are connected by ropes made of biodegradable materials to form a grid structure, and the grid structure is horizontally arranged below the water-retaining layer;

the coating plant seeds A consist of drought-enduring herb seeds and shrub seeds coated with the coating material A on the surfaces, and the dosage ratio of the herb seeds to the shrub seeds is 6-8:1; the coated plant seeds B are seeds of at least one of salix psammophila, caragana microphylla, salix psammophila, sea buckthorn, pigeon pea and cassia seed with the surface sprayed with the coating material B;

the herb seed is at least one seed selected from herba Bermudae, herba Penaeus seu Geranii, herba Saussureae Involueratae, perennial ryegrass, herba Bingham, herba Medicaginis, herba Avenae Fatuae, herba Pegani Harmalae, and herba Artemisiae Annuae; the shrub plant seed is at least one seed of Hippophae rhamnoides, salix psammophila and Caragana microphylla.

2. The ecological restoration blanket according to claim 1, wherein the coating material a comprises, by mass, 85-95% of a compound fertilizer, 0.5-1% of a trace element fertilizer, 1-3% of gibberellin, 0.01-0.1% of indolebutyric acid, 0.05-0.5% of naphthalene acetic acid and 3-12% of a film forming agent.

3. The ecological restoration blanket according to claim 2, wherein the coating material a comprises 88% compound fertilizer, 0.8% trace element fertilizer, 1.8% gibberellin, 0.05% indolebutyric acid, 0.35% naphthalene acetic acid, and 9% film forming agent by mass fraction.

4. The ecological restoration blanket according to claim 1, wherein the coating material B comprises 78-85% of compound fertilizer, 2-4% of trace element fertilizer, 2-5% of gibberellin, 0.2-0.5% of indolebutyric acid, 0.2-0.6% of naphthylacetic acid and 10-13% of film forming agent by mass fraction.

5. The ecological restoration blanket according to claim 4, wherein the coating material B comprises 80% compound fertilizer, 3.2% trace element fertilizer, 4.2% gibberellin, 0.34% indolebutyric acid, 0.26% naphthylacetic acid, and 12% film forming agent by mass fraction.

6. The ecological restoration blanket according to claim 1, wherein the raw materials of the matrix fertilizer layer comprise 20% of coated plant seeds a, 50% of decomposed straw manure, 20% of cork scraps, 10% of a first binder by weight percent.

7. The method of using the ecological restoration blanket for desert gobi soil of claim 1, comprising the steps of:

s1, burying an ecological restoration blanket under desert soil, wherein the burying depth is 5-10cm, and covering the desert soil again;

s2, spraying water for the first time at the place where the ecological restoration blanket is buried according to the dosage of 10-12 t/mu;

s3, after 2-3d, spraying water for the second time at the place where the ecological restoration blanket is buried according to the dosage of 15-20 t/mu;

s4, after every 3d, water is supplemented at the place where the ecological restoration blanket is buried according to the dosage of 4-6 t/mu until plants grow out of more than 85% of the fixed nails.

Images