Method for constructing curtain bundle combined straw checkered sand barrier by using multi-source agriculture and forestry hard stalks

Abstract

A construction method of a curtain bundle combined straw checkered sand barrier using multi-source agriculture and forestry hard stalks comprises the steps that firstly, the agriculture and forestry hard stalks are selected as sand barrier raw materials on the basis of sand damage area resource conditions; one end of each thick stalk is sharpened to be made into a wood nail, and all the stalks (including the tip end of the wood nail) are subjected to carbonization treatment; the stalk curtain is formed by weaving stalks into a curtain shape through flax threads; the stalk curtain is formed by bundling stalks through iron wires into a cylindrical shape; 2, the stalk curtain is laid in the direction perpendicular to the main wind direction, furrowing is conducted on the sand land, and ridging is conducted after one side of the furrowing is buried; 3, the stalk bundles are horizontally placed and are perpendicular to the stalk curtain, and wood nails are inserted into the two ends of the stalk bundles and then nailed into the sand land; the minimum grid size of the combined straw checkered sand barrier is adjusted according to different terrains. According to actual conditions of different sand damage areas, the locally suitable agriculture and forestry hard stalks are selected as sand barrier construction raw materials according to local conditions, and compared with a traditional reed sand barrier, the sand barrier has the advantages of being stable in source, convenient to take materials, low in cost, long in service life and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sand barrier making in desert governance, and in particular to a curtain-bundle combined type grass checkerboard sand barrier construction method using multi-source agricultural and forestry hard stems. BACKGROUND

[0002] China is one of the countries most seriously affected by desertification in the world, and desertification prevention has always been an important task of ecological governance in China. In the long-term practice of sand control, the grass checkerboard sand barrier has become an effective technical means to reduce wind and sand and improve the environment, and is widely used in the governance of desertified land and the construction of wind-sand protection system, which has important significance for improving the regional ecological environment. In recent years, due to the continuous expansion of the scope of desertified land governance, the demand for reed and other sand barrier materials has risen sharply. However, the price of reed material is rising year by year, and the desert and other arid regions do not have the conditions to plant a large number of reeds, a kind of emergent plant, so the transportation cost of materials from other places is high. Secondly, reed material is prone to rot, resulting in poor durability of the sand barrier and high repair frequency. Therefore, seeking a low-cost, easy-to-obtain, and durable sand barrier material to replace the traditional sand barrier material has become a technical problem that needs to be solved in current sand control projects.

[0003] Taking the governance of the Taklimakan Desert as an example, the southern Xinjiang region where the Taklimakan Desert is located is an important forest and fruit industry and cotton planting base in China, with a wide area of forest and fruit planting and a high proportion of cotton output in the country, producing a large amount of agricultural and forestry residual hard stems every year. Compared with reed, such stems have the advantages of low cost, easy access, stable source, and solid material, because they are obtained from the local area. Therefore, using the abundant agricultural and forestry residual hard stems in the southern Xinjiang region as sand barrier construction materials can not only greatly reduce the cost of materials and transportation, but also improve the durability of the sand barrier and realize the resource utilization of agricultural and forestry residues.

[0004] Based on this, the multi-source agricultural and forestry residual hard stems are selected as sand barrier materials according to local conditions, achieving the dual goals of desertification governance and efficient utilization of agricultural residues, and having significant economic, ecological and social benefits. SUMMARY

[0005] In view of the above problems existing in the governance of desertification areas, the present application aims to provide a curtain-bundle combined type grass checkerboard sand barrier construction method using multi-source agricultural and forestry hard stems. The present application uses the local agricultural and forestry residual hard stems in the desertification area as sand barrier construction materials according to local conditions, which has the advantages of low transportation cost, high durability, strong wind resistance, and high resource utilization rate compared with traditional materials.

[0006] The technical scheme of the present application is a curtain-bundle combined type grass checkerboard sand barrier construction method using multi-source agricultural and forestry hard stems, comprising the following steps: Step one: based on the local resource conditions of sand disaster control area, select suitable agroforestry hard stems as sand barrier raw materials; the wood nails select thicker agroforestry hard stems, and one end is sharpened; before the next processing, the surface of the stem (including the sharp end of the wood nail) is carbonized; the stem curtain sand barrier is woven into a curtain shape by stems; the stem bundle sand barrier preferentially selects agroforestry hard stems with lateral branches and nodules as raw materials, and then is bundled into a cylindrical shape by iron wire, and the lateral branches and nodules between the stems naturally form staggered pores, which provide reserved nail insertion positions for the wood nails; Step two: dig a sand ditch on the sand surface, and bury the stem curtain sand barrier on one side of the sand ditch; in order to prevent the bottom of the sand barrier from being eroded and causing the sand barrier to be tilted, affecting the service life of the sand barrier, a sand ridge is erected at the original place of the sand ditch to increase the contact area between the sand barrier and the sand ground, enhance the firmness, delay the erosion time and prolong the service life of the sand barrier; Step three: the stem bundle is placed horizontally on the sand ground and is perpendicular to the stem curtain sand barrier, and the two ends are embedded in the sand ridge, and the wood nails are inserted into the sand ground through the two sides respectively.

[0007] The above-mentioned agroforestry residue hard stem base curtain bundle combined sand barrier construction method, in step one, the suitable agroforestry hard stems are selected as sand barrier raw materials, and the surface of the stem (including the sharp end of the wood nail) is carbonized to improve its corrosion resistance and strength;

[0008] The above-mentioned agroforestry residue hard stem base curtain bundle combined sand barrier construction method, in step one, the stem curtain sand barrier is woven into a curtain shape by stems cut to 40 cm long. The stem bundle sand barrier preferentially selects agroforestry hard stems with lateral branches and nodules as raw materials, cuts the stems to 100 cm long and bundles them into a cylindrical shape with a diameter of 10 cm by iron wire, and the lateral branches and nodules between the stems naturally form staggered pores, which provide reserved nail insertion positions for the wood nails; if the resource conditions of the sand disaster area cannot provide full-length stems, short stems can be bundled end to end to form stems bundles with a length of 100 cm.

[0009] The above-mentioned agroforestry residue hard stem base curtain bundle combined sand barrier construction method, in step one, the wood nails select thicker agroforestry hard stems, cut to 35 cm long, and one end is sharpened, and then the surface of the stem (including the sharp end of the wood nail) is carbonized.

[0010] The above-mentioned agroforestry residue hard stem base curtain bundle combined sand barrier construction method, in step two, a sand ditch with a depth of 10 cm is dug on the sand ground; the stem curtain sand barrier is buried on one side of the sand ditch. A sand ridge is erected at the original place of the sand ditch, and the sand ridge is 10 cm higher than the sand surface, wherein the lower part of the stem curtain is 10 cm, the upper part is 30 cm, and the exposed part is 20 cm.

[0011] In step two of the agroforestry residue hard stem base curtain bundle combined sand barrier construction method, the stem curtain sand barrier is perpendicular to the main wind direction, and the curtains are laid in parallel, and according to different terrains, the interval is adjusted to 100cm or 200cm.

[0012] In step three of the agroforestry residue hard stem base curtain bundle combined sand barrier construction method, the stem bundle is placed horizontally on the sand, and the two ends are embedded in the sand ridge, and two wooden nails are respectively inserted into the sand, and the depth of the wooden nail is 15cm to 20cm.

[0013] In step three of the agroforestry residue hard stem base curtain bundle combined sand barrier construction method, the stem bundle sand barrier is perpendicular to the stem curtain sand barrier, and the bundles are laid in parallel, and according to different terrains, the interval is adjusted to 100cm or 200cm.

[0014] In the agroforestry residue hard stem base curtain bundle combined sand barrier construction method, under the comprehensive consideration of economic benefits and wind prevention and sand fixation effect, the minimum grid size of the combined grass checkerboard sand barrier also differs according to the difference of the terrain, and on the windward slope and hilltop, the minimum grid is adjusted to 1m*1m in size; on the leeward slope and flat place, the minimum grid is adjusted to 2m*2m in size.

[0015] The embodiment of the present application has the following beneficial effects: The present application adopts a construction method of combining curtain-shaped and bundle-shaped sand barriers, which has the significant advantage of synergistic wind prevention and sand fixation. The stem curtain is woven into a whole by hemp lines, has strong structural stability, is laid perpendicular to the main wind direction, can effectively block strong winds, divide air flow and reduce ground wind speed, thereby inhibiting drifting sand migration; the stem bundle is tied by iron wire, is laid parallel to the main wind direction, reduces the amount of stem used, and is fixed in the sand by wooden nails, forming a three-dimensional anchoring integrated grid system with the stem curtain sand barrier, greatly enhancing the overall stability and wind erosion resistance of the sand barrier; the stem bundle is supported to be used by splicing short stems, reducing the limitation on the specifications of raw materials, improving resource utilization and construction feasibility; according to the terrain and wind-sand environment, the sand barrier spacing is flexibly adjusted, dense grids (1m*1m) are used in the strong wind erosion area of the windward slope and hilltop, and sparse grids (2m*2m) are used in the leeward slope and flat area, achieving the optimal balance of wind prevention benefits and material economy.

[0016] The combined sand barrier of the present application selects suitable local agroforestry hard stems as sand barrier construction raw materials according to the different desertification areas and local conditions, has the advantages of stable source, convenient material selection, low cost and long service life compared with traditional reed sand barriers, and improves the sustainability and regional adaptability of the treatment project. At the same time, the reuse of agricultural residue resources also meets the long-term needs of clean and environmental protection and circular agriculture development. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 This is a schematic diagram of a combined curtain-and-sand barrier. Figure 2 for Figure 1 A magnified view of part A in the image; Figure 3 This is a schematic diagram of a stem curtain; Figure 4 A schematic diagram of a stem bundle; Figure 5 This is a schematic diagram of a bundle of stems made by splicing together short cotton stalks. Figure 6 A schematic diagram of the sand barrier laying process; In the picture: 1. Stem curtain; 2. Stem bundle; 3. Wooden nail; 4. Hemp thread; 5. Stem; 6. Iron wire; 7. Sand mound. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-6 , Figure 1 This is a schematic diagram of a combined curtain-and-sand barrier. Figure 2 for Figure 1 A magnified view of part A in the image; Figure 3 for Figure 1 Schematic diagram of a stem curtain; Figure 4 for Figure 1 A schematic diagram of a bundle of stems; Figure 5 This is a schematic diagram of a bundle of stems made by splicing together short cotton stalks. Figure 6 A schematic diagram of the sand barrier laying process;

[0020] This method for constructing a straw checkerboard sand barrier using bundled combinations of hard stems from multiple sources of agricultural and forestry includes: Step one: based on the local resource conditions of the sand disaster control area, select suitable agricultural and forestry hard stems 5 as the sand barrier raw material; the wood nails 3 are selected from thicker stems 5, cut to 35 cm long, and the end is sharpened; before the next processing, the surface of the stem 5 (including the sharp end of the wood nail 3) is carbonized; the stem curtain 1 is woven from stems 5 cut to 40 cm long and hemp lines 4, wherein each stem 5 is arranged with both ends aligned, and the stem curtain 1 is provided with two parallel weaving lines, and the two weaving lines are respectively close to both ends of the stem 5; the stem bundle 2 preferentially selects stems 5 with lateral branches and nodules as raw material, cuts the stems 5 to 100 cm long, and bundles them with iron wire 6 into a cylindrical shape with a diameter of 10 cm and a length of 100 cm, wherein each stem 5 is aligned at both ends, and the iron wire 6 is bundled at both ends of the stem 5; if the resource conditions of the sand disaster area cannot provide full-length stems 5, short stems 5 can be bundled end to end to splice into stems 2 bundles of 100 cm in length. Step two: determine the main wind direction of the laying area, so that the stem curtain 1 sand barrier laying direction is perpendicular to the main wind direction; a sand ditch with a depth of 10 cm is opened on the sand surface, and the stem curtain 1 sand barrier is placed at the bottom of the ditch and is upright, and the sand particles on both sides are backfilled into the sand ditch, and a sand ridge 7 with a height of 10 cm is formed at the original position; the buried part of the stem curtain 1 is 10 cm, the above-ground part is 30 cm, and the exposed part is 20 cm; each stem curtain 1 is laid in parallel, and the spacing is adjusted to 100 cm or 200 cm according to the terrain. Step three: the stem bundle 2 is placed horizontally on the sand, and the placing direction is perpendicular to the laying direction of the stem curtain 1; two wood nails 3 pass through the stem bundle 2 on both sides and are nailed into the sand, and the wood nails 3 are 15-20 cm deep into the sand; the placing direction of each stem bundle 2 is parallel, and the spacing is adjusted to 100 cm or 200 cm according to the terrain; the minimum grid size of the combined grass square sand barrier is adjusted according to the terrain, and on the windward slope and hilltop, the minimum grid is adjusted to 1m x 1m in size; on the leeward slope and flat, the minimum grid is adjusted to 2m x 2m in size.

[0021] The present application provides a kind of curtain and bundle sand barrier combination windbreak and sand fixation technology.Stem curtain is laid vertically to main wind direction, it can block strong wind, reduce ground wind speed;Stem bundle is laid parallel to main wind direction, and forms an integral grid with curtain sand barrier, reduces stem consumption, enhances overall stability.Through short stem splicing and adjusting grid density according to terrain (such as 1m x 1m in strong wind erosion area, 2m x 2m in leeward and flat area), the balance between wind protection benefit and material economy is realized.This technology preferentially uses local agricultural and forestry hard stems as raw material, has the advantages of low cost, easy material selection and long service life, which not only guarantees the sustainability of the treatment, but also promotes the recycling of agricultural resources.

[0022] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made without departing from the principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for constructing a combined grass grid and sand barrier with multi-source agroforestry hard stems, characterized in that, Based on the resource conditions of sand disaster area, local hard stem of agriculture and forestry is selected as the raw material of sand barrier, such as fruit tree branches, cotton stalks and other cheap materials; the curtain-bundle combined sand barrier is divided into stem curtain sand barrier and stem bundle sand barrier.

2. A method for constructing a combined grass-hedge fence sand barrier with multi-source agroforestry hard stems, characterized in that, The method comprises the following steps: Step 1: Based on the local resource conditions of sand disaster area, suitable hard stem of agriculture and forestry is selected as the raw material of sand barrier; The wood nail is selected from thick hard stem of agriculture and forestry, and the tip of one end is sharpened; before the next processing, the surface of the stem (including the sharp end of the wood nail) is carbonized; the stem curtain sand barrier is woven into a curtain shape by the stem; the stem bundle sand barrier is preferably selected from hard stem of agriculture and forestry with lateral branches and nodules as the raw material, and then is bundled into a cylindrical shape by iron wire, and the lateral branches and nodules between the stems naturally form staggered pores, which are reserved for the wood nail to pass through; Step 2: a sand ditch is opened on the sand surface, and one side of the stem curtain sand barrier is buried in the sand ditch; in order to prevent the bottom of the sand barrier from being eroded and causing the sand barrier to be tilted, affecting the service life of the sand barrier, a sand ridge is formed at the original place of the sand ditch to increase the contact area between the sand barrier and the sand ground, enhance the firmness, delay the erosion time and prolong the service life of the sand barrier; Step 3: the stem bundle is horizontally placed on the sand ground and is perpendicular to the stem curtain sand barrier, and the two ends are embedded in the sand ridge, and the wood nail passes through the two sides respectively and is nailed into the sand ground.

3. The method according to claim 2, wherein the method is characterized in that, The suitable hard stem of agriculture and forestry is selected as the raw material of sand barrier, and the surface of the stem (including the sharp end of the wood nail) is carbonized to improve the corrosion resistance and strength.

4. The method according to claim 2, wherein the method is characterized in that, The stem curtain sand barrier is cut into 40cm long and woven into a curtain shape by hemp line. The stem bundle sand barrier is preferably selected from hard stem of agriculture and forestry with lateral branches and nodules as the raw material, and the stem is cut into 100cm long and bundled into a cylindrical shape with a diameter of 10cm by iron wire, and the lateral branches and nodules between the stems naturally form staggered pores, which are reserved for the wood nail to pass through; if the resource conditions of sand disaster area cannot provide sufficient length of stem, the short stems can be bundled with the ends staggered to form a stem bundle with a length of 100cm.

5. The method according to claim 2, wherein the method is characterized in that, The wood nail is selected from thick hard stem of agriculture and forestry, and the tip of one end is sharpened, and then the surface of the stem (including the sharp end of the wood nail) is carbonized.

6. The method according to claim 2, wherein the method is characterized in that, A sand ditch with a depth of 10cm is opened on the sand ground; one side of the stem curtain sand barrier is buried in the sand ditch. The sand ridge is formed at the original place of the sand ditch, and the sand ridge is 10cm higher than the sand surface, wherein the lower part of the stem curtain is 10cm, the upper part is 30cm, and the exposed part is 20cm.

7. The method according to claim 2, wherein the method is characterized in that, The laying direction of the stem curtain sand barrier is perpendicular to the main wind direction, and the curtains are laid in parallel, and the distance between them is adjusted to 100cm or 200cm according to the terrain.

8. The method according to claim 2, wherein the method is characterized by, The stem bundle is horizontally placed on the sand ground, and the two ends are embedded in the sand ridge, and the two wood nails pass through the two sides of the stem bundle respectively and are nailed into the sand ground, and the depth of the wood nail into the sand is 15cm to 20cm.

9. The method according to claim 2, wherein the method is characterized by, The stem bundle sand barrier is perpendicular to the stem curtain sand barrier, and the bundles are laid in parallel, and the distance between them is adjusted to 100cm or 200cm according to the terrain.

10. A sand fence of a bale group of hard stalks of agroforestry residues according to claims 2 to 7, characterized in that, Under the comprehensive consideration of economic benefits and wind prevention and sand fixation effect, the combined grass checkerboard sand barrier has different minimum grid length sizes according to the differences in terrain, the minimum grid length size is adjusted to 1m*1m on the windward slope and the hill top, and the minimum grid length size is adjusted to 2m*2m on the leeward slope and the flat place.

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