A seed layer spraying method for pellet spray seeding vegetation restoration

Abstract

The present application provides a kind of for granular spray seeding vegetation restoration seed layer spray method, comprising the following steps: 1) according to the climatic environment characteristics of vegetation restoration area determines plant seed proportioning;2) seed in proportioning is according to particle size size and is packed into two bags, and is marked as seed A and seed B, and the particle size of seed A is greater than the particle size of seed B;3) first spray bottom matrix in plant restoration area, two layers of seed layer are sprayed using granular spray seeding technology on the bottom layer, first spray seeding and add seed A, second, spray seeding and add seed B on it;4) when spraying seed layer, make the matrix in the way of overlapping tile, along the slope bottom to the slope top layer layer lap joint.The present application avoids seed waste, improves the seed emergence rate, reduces the evaporation of water at the same time, enhances the erosion resistance from the matrix layer itself structure.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of slope vegetation restoration and ecological restoration, and particularly relates to a seed layer spraying method for granulation spraying vegetation restoration. BACKGROUND

[0002] In the existing seed layer spraying method, no matter the size of the seeds in the proportioning, the seeds are mixed together for spraying, and the seed layer is controlled at the same thickness. The small-sized seeds sprayed at the bottom of the seed layer are difficult to germinate, and the large-sized seeds sprayed at the upper part of the seed layer are lost due to the lack of sufficient substrate coverage, which causes the germination rate to decrease and the seeds to be wasted. In addition, when the seed layer is sprayed, spraying is often carried out from the top of the slope to the bottom of the slope. When the substrate for granulation reaction is overlapped, a large number of straight-face sunlight gaps are generated, which increases the water evaporation amount in the substrate layer, and at the same time, strong rainfall is easy to cause damage to the substrate layer.

[0003] CN 114409328 B discloses a quarry residue spraying substrate and a spraying preparation method thereof, which comprises slope trimming, net laying operation, preparation and spraying of the substrate, spraying of green adhesive, preparation and spraying of the seed layer, spraying of the seed layer on the substrate layer and the green adhesive, the spraying thickness is 14-16 mm, and the surface of the seed layer is covered with non-woven fabric after spraying. CN 107964963 B discloses a high and steep slope wound surface fiber skeleton granular structure repair technology and a construction method thereof, that is, a high polymer granular agent substrate layer is arranged on the surface of a rock slope, a seed layer is covered on the outer surface of the high polymer granular substrate layer, and a moss layer is covered on the outer surface of the seed layer.

[0004] The above-mentioned technology improves the anti-erosion and water retention performance of the substrate by covering the surface of the seed layer with non-woven fabric and covering the surface of the seed layer with a moss layer, and does not improve the seed layer spraying process and the overlapping method. In addition, the spraying of the seed layer does not consider the size of the seeds and whether it is beneficial to improve the germination rate. SUMMARY

[0005] The present application overcomes the defects of the prior art, provides a seed layer spraying method for granulation spraying vegetation restoration, avoids seed waste, improves seed emergence rate, and reduces water evaporation, thereby enhancing the anti-erosion performance from the structure of the substrate layer itself.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a seed layer spraying method for granulation spraying vegetation restoration, comprising the following steps:

[0007] 1) determining the plant seed proportioning according to the climate environment characteristics of the vegetation restoration area;

[0008] 2) The seeds in the proportion are divided into two bags according to the particle size, and are marked as seed A and seed B, the particle size of seed A is larger than that of seed B;

[0009] 3) The bottom layer of the substrate is sprayed first in the plant recovery area, and two layers of seed layers are sprayed by using the pellet spraying technology on the bottom layer, the substrate added with seed A is sprayed first, and then the substrate added with seed B is sprayed thereon;

[0010] 4) When the seed layers are sprayed, the substrate is overlapped in the form of overlapping tiles from the slope bottom to the slope top.

[0011] In some embodiments of the present application, the particle size of the seed A is >= 3 mm, and the particle size of the seed B is < 3 mm.

[0012] In some embodiments of the present application, the thickness of the bottom layer of the substrate is 3-5 cm.

[0013] In some embodiments of the present application, the thickness of each seed layer is 1.0-1.5 cm.

[0014] In some embodiments of the present application, when the pellet spraying is performed, the viscosity of the pellet solution is 10000-15000 mPa·S, and the viscosity of the mud formed by each dry matter in the sprayed substrate is 3000-4000 mPa·S.

[0015] In some embodiments of the present application, when the pellet spraying of the first layer of seed layer is performed, the bottommost row of substrate is sprayed horizontally first, the second row of substrate is sprayed horizontally on the top of the bottommost row of substrate in the form of overlapping tiles, the second row of substrate is overlapped with the first row of substrate, and the spraying and overlapping are performed row by row from the bottom end to the top end until the bottom layer is covered.

[0016] In some embodiments of the present application, when the pellet spraying of the second layer of seed layer is performed, the bottommost row of substrate is sprayed horizontally first, the second row of substrate is sprayed horizontally on the top of the bottommost row of substrate in the form of overlapping tiles, the second row of substrate is overlapped with the first row of substrate, and the spraying and overlapping are performed row by row from the bottom end to the top end until the first layer of seed layer is covered.

[0017] Compared with the prior art, the present application has the following advantages and positive effects:

[0018] 1. Each specification of seed is covered by a substrate layer with a corresponding thickness, which avoids seed waste and improves the germination rate of the seed;

[0019] 2. The substrate layer overlapped in the form of overlapping tiles avoids the generation of a large number of straight-surface sunlight gaps, reduces the speed of water evaporation in the substrate, and hinders the erosion of runoff to the inside of the substrate layer during heavy rain, thereby enhancing the erosion resistance from the structure of the substrate layer itself. DETAILED DESCRIPTION

[0020] The application will be described in detail below by way of exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can be beneficially combined with other embodiments without further elaboration.

[0021] Example: Vegetation restoration project in the southwest region

[0022] A seed layer spraying method for pellet spraying vegetation restoration is adopted, comprising the following steps:

[0023] 1) Determine the plant seed ratio according to the climatic environmental characteristics, which contains multiple plants such as trees, shrubs and grasses, including Taiwan acacia, silver wattle, golden wattle, umbrella cassia, Chinese senna and rye grass;

[0024] 2) Pack the seeds in the ratio according to the particle size ≧3mm and the particle size <3mm, and mark them as seed A and seed B;

[0025] 3) Spray a 4cm-thick bottom layer substrate in the plant restoration area;

[0026] 4) Spray two layers of seed layer on the bottom layer using the pellet spraying technology, first spray the substrate added with seed A to form the first layer of seed layer, and then spray the substrate added with seed B on it to form the second layer of seed layer, control the thickness of each layer of seed layer to be 1.5cm, and control the interval between the two layers of seed layer to be within 12h;

[0027] 5) To control the effect of substrate pelletization reaction and make the substrate have a good structure when lapping, the viscosity of the pelletizer and the mud is measured by a rotary viscometer when pellet spraying, the viscosity of the pelletizer solution is adjusted to 13500mPa·S, and the viscosity of the mud formed by mixing each dry matter with water in the sprayed substrate is 3400mPa·S;

[0028] 6) When spraying the first layer of seed layer, first spray the substrate at the bottom end horizontally, then spray the second row of substrate on the top of the first row of substrate in the form of overlapping tiles, lap the second row of substrate with the first row of substrate, and then spray and lap from the bottom end to the top end until covering the bottom layer;

[0029] 7) When spraying the second layer of seed layer, first spray the substrate at the bottom end horizontally, then spray the second row of substrate on the top of the first row of substrate in the form of overlapping tiles, lap the second row of substrate with the first row of substrate, and then spray and lap from the bottom end to the top end until covering the first layer of seed layer.

[0030] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for seed layer spraying for pelletized spray seeding vegetation restoration, characterized in that, The method comprises the following steps: 1) determining the plant seed ratio according to the climatic environmental characteristics of the vegetation restoration area; 2) packing the seeds in the ratio into two bags according to the particle size, and marking them as seed A and seed B, wherein the particle size of seed A is larger than that of seed B; 3) first spraying the underlying substrate in the plant restoration area, and then spraying two layers of seed layers on the underlying substrate using the pellet spraying technology, wherein the thickness of each layer of seed layer is 1.0-1.5 cm, the substrate added with seed A is first sprayed to form the first layer of seed layer, and then the substrate added with seed B is sprayed on the first layer of seed layer to form the second layer of seed layer, the interval between the spraying of the two layers of seed layers is controlled to be within 12 h, the viscosity of the pellet solution is 10,000-15,000 mPa·S, and the viscosity of the mud formed by the dry matter in the sprayed substrate is 3,000-4,000 mPa·S; 4) when spraying the seed layers, the substrate is overlapped in the form of overlapping tiles from the slope bottom to the slope top; when the pellet spraying of the first layer of seed layer is performed, the first row of substrate is first sprayed horizontally, the second row of substrate is then sprayed horizontally on the first row of substrate in the form of overlapping tiles, the second row of substrate is overlapped with the first row of substrate, and the spraying and overlapping are performed row by row from the bottom end to the top end until the underlying layer is covered; when the pellet spraying of the second layer of seed layer is performed, the first row of substrate is first sprayed horizontally, the second row of substrate is then sprayed horizontally on the first row of substrate in the form of overlapping tiles, the second row of substrate is overlapped with the first row of substrate, and the spraying and overlapping are performed row by row from the bottom end to the top end until the first layer of seed layer is covered.

2. The method for seed layer spraying for pellet spraying and seeding vegetation restoration according to claim 1, characterized in that, The particle size of seed A is greater than or equal to 3 mm, and the particle size of seed B is less than 3 mm.

3. The method for seed layer spraying of pellet-spraying vegetation restoration according to claim 1, characterized in that, The thickness of the underlying substrate is 3-5 cm.