CN111296160A - Method for rapidly planting trees in front edge area for repairing vegetation on windward slope of island - Google Patents

Abstract

A method for rapid forest formation in the frontier area of vegetation restoration on windward slopes of an island, comprising the following steps: step 1, constructing an artificial wind barrier: A, installing a bracket; B, installing a wind shielding net; step 2, constructing a plant wind barrier: A, vegetation Selection; B, planting site selection; Step 3, planting arbor in the vegetation restoration area: A, regional layout; B, tree selection; C, oblique planting planting hole setting; D, oblique planting planting density; E, oblique planting; F , Normal planting area vegetation planting. By adopting the combination of the artificial wind barrier and the plant wind barrier, the invention reduces the wind speed on the windward side of the island, protects the plants in the vegetation restoration area on the leeward side of the wind barrier, reduces the invasion of wind damage, and ensures better growth of the plants in the vegetation restoration area. It can effectively establish a vegetation restoration area by means of oblique planting and dense planting, so as to avoid shrubs or flag-shaped trees caused by wind damage, and improve the restoration effect of vegetation on windward slopes of islands.

Description

A method for rapid forest formation in frontier areas of vegetation restoration on windward slopes of islands

technical field

The invention relates to a method for planting saplings under windshield conditions, in particular to a method for rapid forest formation in frontier areas of vegetation restoration on windward slopes of islands.

Background technique

The island has special geographical conditions and a harsh ecological environment. It is seriously affected by typhoons, droughts, and northeast monsoons, and the vegetation is poorly developed. The natural recovery period after vegetation destruction is very long, and some cannot be recovered naturally, resulting in serious ecological degradation, soil erosion, island erosion and other problems. The use of manual intervention for island vegetation restoration is a key measure to curb the degradation of island vegetation and promote island vegetation restoration. However, restricted by the natural habitat of the island, some areas are affected by the northeast monsoon, typhoon, salt spray, rainstorm erosion, etc. Thin, barren soil, low clay content, poor water retention capacity, coupled with the lack of freshwater resources, prolonged drought in winter and the impact of strong winter winds, it is extremely difficult to restore vegetation. Especially in the front area on the windward side, it is most seriously affected by strong winter wind and salt damage. After winter, many plants die, and the surviving plants are generally dry on the upper and windward sides, and only the roots survive. New shoots grow back from the roots. In the second winter, the new branches dry up again, so year after year, a typical old tree is formed. The arbor becomes bushy, and the front area is particularly dwarfed, which cannot provide a good windshield for the woods at the back.

Wind barriers can reduce wind speed, prevent wind from draining plants, and improve the survival rate of seedlings or the proportion of surviving parts on the ground. Therefore, wind barriers are often installed at the front of many islands and coastal vegetation restoration areas to reduce the impact of strong winds on plants. The traditional wind barriers are generally composed of fixed brackets and shading nets or nylon nets, which can play a better role in blocking the wind. As shown in Figure 1, the inventors of the present case installed three artificial wind barriers on the windward slope of an island. Different ground heights It can be seen from the figure that the wind speed decreases significantly after the wind barrier at the position lower than the wind barrier, but the wind speed has little influence on the position higher than the wind barrier. In addition, traditional wind barriers have high initial investment costs and post-maintenance costs, poor durability, and windshield materials such as sunshade nets are easy to age and break. They must be re-installed before winter every year. Effect. In addition, the decay of materials such as sunshade nets causes secondary pollution and affects the landscape environment. When carrying out vegetation restoration on an island where the northeast monsoon prevails, the inventor of this case planted reed bamboo behind the artificial wind barrier at the front of the windward slope of the island. The reed bamboo grows to form a plant wind barrier, which can replace the artificial wind barrier to form a long-term wind barrier effect.

Commonly, saplings are planted in an upright manner, which is conducive to the continued upward growth of the trunk. However, among the partially dry plants affected by the northeast monsoon in winter, the proportion of upright plants is relatively large. At the front of the windward slope, the plants are difficult to grow and the canopy is closed for a long time, which is not conducive to the rapid growth of plants in the vegetation restoration area, so the effect of vegetation restoration on the windward slope of the island is very small.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a method for rapid forest formation in the frontier area of vegetation restoration on the windward slope of an island, which can reduce the wind speed on the windward side of the island through the combination of artificial wind barriers and plant wind barriers, and perform vegetative restoration on the vegetation on the leeward side of the wind barrier. Wind protection, reduce the invasion of wind damage, ensure the normal growth of plants in the vegetation restoration area, improve the rate of vegetation canopy and forest formation, and establish a vegetation restoration area by slanting and dense planting to prevent trees from being damaged by wind and causing shrubs or flags. , to improve the restoration effect of the vegetation on the windward slope of the island.

In order to achieve the above purpose, the solution of the present invention is: a method for rapid forest formation in the frontier area of vegetation restoration on the windward slope of an island, comprising the following steps:

Step 1, build an artificial wind barrier:

A. Installation bracket: Take several fixed columns at the front of the windward side of the island and drive them into the ground at intervals. At least one fixed pile is installed on one side of each fixed column, and part of the fixed pile is driven into the ground. Leash;

B. Install the windscreen: wind a fixed rope at the upper and lower ends between the fixed columns, and fix the sunscreen on the upper and lower fixed ropes of the two adjacent fixed columns through the connecting rope;

Step 2, build a plant wind barrier:

A. Vegetation selection: Take the lush reed bamboo community, selectively cut some of the plants as cuttings and trim them into propagules with a length of 30-50cm, and then soak some of the propagules with a 1:5000 rooting powder solution for 2 more than an hour;

B. Selection of planting land: excavate a reed bamboo planting ditch on the leeward side of the artificial wind barrier or the stepped restoration area and plant multiple clusters of reed bamboo, backfill the planting soil and step on it, and pour the root water;

Step 3: Plant trees in the vegetation restoration area:

A. Regional layout: The area behind the plant wind barrier is selected as the vegetation restoration area, and the front area where the vegetation restoration area is perpendicular to the main wind direction in winter is used as the oblique planting area, and the rear area is the normal planting area;

B. Tree selection: select saplings with a height of 1.5 to 2.5m for spare;

C. Setting of planting holes for oblique planting: excavate planting holes, the slope on the windward side of the planting hole is small, the slope on the leeward side is large, and the long side of the hole is consistent with the main wind direction in winter;

D. Oblique planting density: Divide the oblique planting area into a dense planting area and a transition area. The dense planting area is in the front and the transition area is behind, and the planting density gradually decreases;

E. Oblique planting: adopt the oblique planting method of 15° to 75° to plant arbor saplings in the front area, and the oblique planting angle gradually expands;

F. Vegetation planting in normal planting areas: excavate planting pits, and conventionally plant tree saplings perpendicular to the ground.

Further, the fixed column described in step 1A adopts a wooden column with a length of 3m ± 0.5m and a diameter of 10cm ± 2cm, and one end of the fixed column is sharpened and driven into the ground 50cm ± 10cm, leaving 2.5m ± 0.5m on the ground, And the interval between two adjacent fixed columns is 2.5m±1m; the fixed pile adopts a wooden pile with a length of 70cm±10cm, and one end of the wooden pile is sharpened and then driven into the ground 50cm±10cm obliquely.

Further, the sunscreen net described in step 1B is an anti-aging sunscreen net, and the width of the sunscreen net is close to the height of the ground part of the fixed column; the traction rope, the fixed rope and the connecting rope are all sunscreen nylon ropes, and the traction The diameter of the rope and the fixing rope are both 1.5cm, and the diameter of the connecting rope is both 0.5cm.

Further, the included angle between the traction rope and the fixing column is 45°.

Further, described reed bamboo propagule after trimming in step 2A retains at least 3 node rings; the soaking part of described propagule has at least 1 node ring; the excavation of reed bamboo planting ditch described in step 2B The width and depth are both 30cm, and the planting soil laid in the ditch is the nutrient soil after the excavated soil is evenly mixed with the organic fertilizer and the water-retaining agent; the nutrient soil needs to be laid to 1/3 of the ditch depth before the vegetation is planted, The remaining nutrient soil is backfilled after the seedlings are planted.

Further, the planting time of described reed bamboo is in the early rainy season, and the reed bamboo and the seedling of vegetation restoration are planted simultaneously or before the seedling planting of vegetation restoration; the planting interval of two connected clusters of described reed bamboo is 20cm, each The cluster reed bamboo includes 2 to 3 seedlings.

Further, the width of the oblique planting area described in step 3A is 10-20m; the saplings described in step 3B are selected as bagged arbor saplings; the top surface and bottom surface of the planting hole described in step 3C are both rectangular structures, The length of the top surface is 60-80cm, the width is 40cm, and the length and width of the bottom surface and the depth of the planting hole are all 40cm.

Further, the greater the inclination slope of the planting hole, the longer the long side of the hole.

Further, the row spacing and the plant spacing of each row of the dense planting area in the oblique planting area described in step 3D are 1 meter; the plant spacing in the transition area is 1m, and the row spacing is 2m; the oblique planting area described in step 3E is 1 meter. The arbor saplings are planted in a staggered arrangement; the number of planting rows of arbor saplings in the dense planting area and the transition area is 3 to 5 rows; the planting density in the normal planting area described in step 3F is 2 × 2 m or 3 × 3m.

Further, the sapling planting inclination in the dense planting area in the oblique planting area is 30°±10°, the sapling planting inclination in the transition zone is 45°±10°～60±10°, and 3 rows of saplings are planted in each inclination area. .

Compared with the prior art, the present invention has the following beneficial effects: by adopting artificial wind barriers, the wind speed on the windward side of the island is reduced, and the low plant wind barriers are protected, so that the reed bamboos of the plant wind barriers can grow stably; The plant wind barrier is used as the second barrier to protect the plants in the vegetation restoration area from wind, to ensure that the plants in the vegetation restoration area grow well, and after the artificial wind barrier is damaged, the plants in the vegetation restoration area can continue to be protected through the plant wind barrier. Carry out wind protection, reduce the invasion of wind damage, and speed up the canopy closure in the vegetation restoration area; by planting the vegetation restoration area by means of oblique planting and dense planting, it can reduce the dead trees or the upper part of the vegetation restoration area caused by strong winds in winter, and improve the vegetation canopy closure into a forest. It can avoid the shrubs or flag-shaped trees caused by wind damage, and improve the restoration effect of the vegetation on the windward slope of the island.

Description of drawings

Fig. 1 is a schematic diagram of the variation of different heights from the ground and wind speed of the same section before and after the artificial wind barrier of the prior art;

Fig. 2 structure diagram of artificial wind barrier, plant wind barrier and vegetation restoration area of the present invention;

Fig. 3 is the side view structure schematic diagram of the artificial wind barrier of the present invention;

Fig. 4 is the partial frontal structure schematic diagram of the artificial wind barrier of the present invention;

Fig. 5 is a schematic diagram of the change of the arbor planting angle in the vegetation restoration area of the present invention;

Fig. 6 is a schematic diagram of the variation of vegetation planting density in the oblique planting planting area of the vegetation restoration area of the present invention;

Fig. 7 is the top surface structure schematic diagram of the planting hole in the vegetation restoration area of the present invention;

Fig. 8 is the cross-sectional structure schematic diagram of the planting hole in the vegetation restoration area of the present invention;

FIG. 9 is a schematic diagram of the installation scene of the fixed column of the artificial wind barrier;

Figure 10 is a schematic diagram of the installed artificial wind barrier scene;

Fig. 11 is a schematic diagram of the scene of planting reed bamboo wind barriers in the stepped restoration area;

Figure 12 is a schematic diagram of the positional relationship between the reed bamboos in the artificial wind barrier, the plant wind barrier and the obliquely planted trees in the vegetation restoration area;

Figure 13 is an effect diagram of plant wind barrier cultivation;

Figure 14 is the effect diagram of removing the artificial wind barrier after the plant wind barrier is cultivated;

Figure 15 shows the effect of removing artificial wind barriers and plant wind barriers after the frontier vegetation in the restoration area has grown into a forest.

reference number

Artificial wind barrier 1, fixed column 11, traction rope 12, fixed pile 13, sunscreen 14, fixed rope 15, connecting rope 16, plant wind barrier 2, vegetation restoration area 3, oblique planting area 31, dense planting area 311, transition Area 312 , planting hole 313 , windward side 313 ′, leeward side 313 ″, normal planting area 32 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

Example 1:

A method for rapid forest formation in frontier areas of vegetation restoration on windward slopes of islands, comprising the following steps:

Step 1, build artificial wind barrier 1 as shown in Figure 2-4:

A. Mounting bracket: take several fixed columns 11 at the front of the windward side of the island and drive them into the ground at intervals. In this embodiment, the fixed columns 11 are wooden columns with a length of 3m±0.5m and a diameter of 10cm±2cm. 3m, a wooden column with a diameter of 10cm is preferred; after one end of the fixed column 11 is sharpened, it is driven into the ground for 50cm ± 10cm, and 2.5m ± 0.5m is left on the ground. Preferably, the fixed column 11 is driven into the ground for 50cm, leaving 2.5m is better; and the interval between two adjacent fixed columns 11 is 2.5m±1m, preferably 2.5m; one fixed pile 13 is installed on both sides of each fixed column 11, and the fixed pile 13 is partially driven. into the ground, in this embodiment, the fixed pile 13 adopts a wooden pile with a length of 70cm±10cm, preferably 70cm; one end of the wooden pile is sharpened and then driven into the ground 50cm±10cm obliquely, preferably, A traction rope 12 is connected between the fixed pile 13 on the ground and the fixed column 11. In this embodiment, the angle between the traction rope 12 and the fixed column 11 is 45°, ensuring that the traction rope 12, A stable triangular structure is formed between the fixed column 11 and the ground, so that the fixed column 11 cannot be swayed left and right under the action of strong wind, and the stability of the artificial wind barrier 1 is improved; in this embodiment, between the traction rope 12 and the fixed column 11 The angle of 45° is the best state, but the angle between the two is not limited to 45°, and the angle can also be changed according to the actual situation to keep the artificial wind barrier 1 stable;

B. Install the windscreen: wind a fixed rope 15 at the upper and lower ends between the fixed columns 11 respectively, and fix the sunscreen 14 on the upper and lower fixed ropes 15 of the adjacent two fixed columns 11 through the connecting rope 16. This implementation In the example, the traction rope 12, the fixing rope 15 and the connecting rope 16 are all sunscreen nylon ropes, the diameters of the traction rope 12 and the fixing rope 15 are all 1.5 cm, and the diameters of the connecting rope 16 are all 0.5 cm; The sunscreen 14 is an anti-aging sunscreen, and the width of the sunscreen 14 is close to the height of the ground part of the fixed column 11 to ensure that the sunscreen 14 can form a complete barrier with the two adjacent fixed columns 11 to block the wind and reduce wind damage. However, the anti-erosion ability of sunscreen nylon rope and anti-aging sunscreen net is strong, which can improve the service life of artificial wind barrier 1 in the island area;

Step 2, build the plant wind barrier 2 as shown in Figure 2:

A. Vegetation selection: Take the lush reed bamboo community, selectively cut some of the plants as cuttings and trim them into propagules with a length of 30-50cm, and then soak some of the propagules with a 1:5000 rooting powder solution for 2 More than an hour, in the present embodiment, the described reed bamboo propagule after trimming retains 3 node rings, and the soaking part of propagule has 1 node ring, after being convenient for the reed bamboo propagule after trimming to be buried in soil, can pass through wherein One nodal ring takes root underground, and the other two nodal rings can germinate on the ground; and the propagule of reed bamboo after soaking in the rooting powder solution can promote the rooting of the node ring under the soil, ensure the reproduction speed of the plant, and improve the planting of reed bamboo. survival rate;

B, the planting ground is selected: excavate the reed bamboo planting ditch and plant multiple clusters of reed bamboo in the leeward side of the artificial wind barrier 1 or the stepped repair area, backfill the planting soil and step on it, and pour the fixed root water; in the present embodiment, all The planting time of the reed bamboo is in the early rainy season, and the reed bamboo is planted with the seedlings restored by vegetation at the same time; the planting interval of two connected clusters of the reed bamboo is 20cm, and each cluster of reed bamboo includes 2 to 3 seedlings; the reed bamboo The excavation width and depth of the planting ditch are both 30cm, and the planting soil laid in the ditch is the nutrient soil after the excavated soil is evenly mixed with the organic fertilizer and the water-retaining agent; the nutrient soil needs to be laid to the depth of the ditch before the vegetation is planted. At 1/3, the remaining nutrient soil is backfilled after the seedlings are planted. The configured nutrient soil can increase soil nutrients and moisture, reduce the dryness of the reed bamboo, improve the survival rate of the seedlings, and effectively form a plant wind barrier through the grown reed bamboo 2 , to replace the artificial wind barrier 1 to form a long-term wind shield;

Step 3: Plant trees in the vegetation restoration area 3 shown in Figure 2 and Figure 5-8:

A. Regional layout: The area behind the plant wind barrier 2 is selected as the vegetation restoration area 3, and the front area of the vegetation restoration area 3 perpendicular to the main winter wind direction is used as the oblique planting area 31, and the rear area is the normal planting area 32; this implementation In the example, the width of the oblique planting area 31 is 10-20m;

B. Tree selection: select saplings with a height of 1.5 to 2.5 m for standby use; in this embodiment, the saplings are selected as bagged arbor saplings. It is beneficial to maintain a large survival ratio of the plant, and even keep the whole plant intact, so that the plant can grow more lateral branches in the spring of the coming year, increase the biomass of the plant, and speed up the canopy closure of the vegetation restoration area 3;

C. The setting of the planting hole 313 for oblique planting: excavating the planting hole 313, in this embodiment, the top surface and the bottom surface of the planting hole 313 are both rectangular structures, and the length of the top surface is 60-80cm, preferably, 80cm is better; The width is 40cm, the length and width of the bottom surface and the depth of the planting hole 313 are all 40cm. The slope 313' on the windward side of the planting hole 313 is relatively small, and the slope on the leeward side 313" is relatively large. The long side of the hole is consistent with the main wind direction in winter. The greater the slope of the inclination angle of the planting hole 313, the longer the long side of the hole, which is convenient for planting plants to be planted quantitatively according to a specific inclination angle along the wind direction, reducing the probability of trees being blown down and broken by the wind during a typhoon, and improving the resistance of the plant to typhoon. ability to facilitate rapid growth of plants into forests;

D, oblique planting planting density: the oblique planting area 31 is divided into a dense planting area 311 and a transition area 312, the dense planting area 311 is in the front, and the transition area 312 is behind, and the planting density is gradually reduced; in this embodiment, the oblique planting is In the dense planting area 311 in the area 31, the row spacing and the plant spacing of each row are both 1 meter; the plant spacing of the transition area 312 is 1 m, and the row spacing is 2 m;

E, oblique planting: adopt the method of oblique planting of 15°～75° to plant arbor sapling in oblique planting area 31, and the oblique planting angle gradually expands; In this example, the sapling of dense planting area 311 in described oblique planting area 31 The planting inclination is 30°±10°, preferably 30°; the transition zone 312 is divided into two areas, front and rear, and the front part of the transition zone 312 is close to the dense planting area 311, and the arbor sapling planting inclination in this area is 45°± 10°, preferably, 45° is better; the rear of the transition zone 312 is far away from the densely planted area 311, and the arbor sapling planting inclination in this area is 60°±10°, preferably, 60° is better; the densely planted area 311 is planted 3 to 5 rows of saplings, 3 to 5 rows of saplings are planted in the front and back two areas of the transition zone 312, preferably, 3 rows of saplings are planted in each inclination area; Planting in the way of planting, by adopting staggered and oblique planting vegetation, can reduce the dead or upper part of the vegetation restoration zone 3 caused by strong winter winds, further improve the rate of vegetation canopy and forest formation, and avoid shrubs or dwarf trees caused by wind damage. to ensure the restoration effect of island vegetation;

F, normal planting area 32 vegetation planting: excavate planting pits, the tree seedlings are conventionally planted by being perpendicular to the ground; in the present embodiment, the planting density of the normal planting area 32 is 2 × 2m or 3 × 3m, preferably ground, preferably 2×2m.

Figure 9-15 is the effect diagram of the specific implementation of this case; as shown in Figure 9 and Figure 10, choose an island on the windward side to build an artificial wind barrier 1; as shown in Figure 12, build a plant wind barrier on the leeward side of the artificial wind barrier 1 Barrier 2 and vegetation restoration area 3, artificial wind barrier 1 can reduce the wind speed on the windward side of the island, protect the low plant wind barrier 2, so that the reed bamboo of the plant wind barrier 2 can grow stably; as shown in Figure 13 and Figure 14, grow into The future plant wind barrier 2 serves as the second barrier to protect the plants in the vegetation restoration area 3 from wind, ensuring that the plants in the vegetation restoration area 3 grow well, and after the artificial wind barrier 1 is damaged, the plant wind barrier 2 can continue to play. It can protect the plants in the vegetation restoration area 3 against wind and reduce wind damage, thereby increasing the plant biomass in the vegetation restoration area 3 and speeding up the canopy closure of the vegetation restoration area 3; as shown in Figure 11, the establishment of a stepped restoration area The plant wind barrier 2 of the plant is protected from the wind in the rear vegetation restoration area 3 by planting stepped reed bamboos; the trees in the vegetation restoration area 3 adopt the method of oblique planting and dense planting, which reduces the dead or upper part of the plants caused by strong winds in winter, and improves the vegetation coverage. The rate of canopy closure and forest formation can prevent trees from becoming bushes or flag-shaped due to wind damage. Figure 15 shows the tree formation in vegetation restoration area 3. The restoration effect of vegetation on the windward slope of the island is obvious.

To sum up, the present invention relates to a method for rapid forest formation in the frontier area of vegetation restoration on windward slopes of islands. The artificial wind barrier 1 is used to reduce the wind speed on the windward side of the island, and the low plant wind barrier 2 is protected, so that the Reed bamboo grows stably; by adopting the plant wind barrier 2, the plant wind barrier 2 after growth is used as the second barrier to protect the plants in the vegetation restoration area 3 from wind, so as to ensure that the plants in the vegetation restoration area 3 grow well, and After the artificial wind barrier 1 is damaged, the plants in the vegetation restoration area 3 can continue to be protected from wind by the plant wind barrier 2, so as to reduce the wind damage and speed up the canopy closure of the vegetation restoration area 3; Zone 3, reduce the phenomenon of dead trees or dry upper part of vegetation restoration caused by strong winter wind in Zone 3, increase the rate of vegetation canopy closure and forest formation, avoid shrubs or flag-shaped trees caused by wind damage, and improve the restoration of vegetation on windward slopes of islands Effect.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear" ", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be It is construed as a limitation of the present invention.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A method for rapidly planting forests in a front edge area of vegetation restoration of an island windward slope is characterized by comprising the following steps: the method comprises the following steps:

step one, constructing an artificial windbreak (1):

A. installing a support: a plurality of fixing columns (11) are taken at the front edge of the windward side of the island and are driven into the ground at intervals, at least 1 fixing pile (13) is installed on one side of each fixing column (11), part of each fixing pile (13) is driven into the ground, and a traction rope (12) is connected between each fixing pile (13) on the ground and each fixing column (11);

B. installing a wind screen: the upper end and the lower end between the fixed columns (11) are respectively wound with a fixed rope (15), and the sun-proof net (14) is fixed on the upper fixed rope (15) and the lower fixed rope (15) of the two adjacent fixed columns (11) through a connecting rope (16);

step two, constructing a plant windbreak (2):

A. vegetation selection: taking a luxuriant giant reed colony, selectively cutting part of plant bodies in the giant reed colony as cutting slips, trimming the cutting slips into propagules with the length of 30-50 cm, and soaking part of propagules for more than 2 hours by using a rooting powder solution with the ratio of 1: 5000;

B. selecting a planting field: excavating bamboo reed planting ditches in a leeward side or a stepped restoration area of the artificial windbreak (1), planting a plurality of clusters of bamboo reeds, treading after backfilling planting soil, and pouring root fixing water;

planting trees in the vegetation restoration area (3):

A. area layout: selecting a rear area of the plant windbreak (2) as a vegetation restoration area (3), and taking a front area of the vegetation restoration area (3) vertical to a main wind direction in winter as an oblique planting area (31), and the rear area as a normal planting area (32);

B. selecting trees: selecting a tree seedling with the height of 1.5-2.5 m for later use;

C. oblique planting hole (313) setting: excavating a planting hole (313), wherein the slope of the upwind side (313 ') of the planting hole (313) is smaller, the slope of the downwind side (313') is larger, and the long edge of the hole is consistent with the main wind direction in winter;

D. oblique planting density: the oblique planting area (31) is divided into a dense planting area (311) and a transition area (312), the dense planting area (311) is in the front, the transition area (312) is in the back, and the planting density is gradually reduced;

E. oblique planting: planting arbor saplings in the front edge area in an inclined planting method of 15-75 degrees, and gradually enlarging the inclined planting angle;

F. and (3) vegetation planting in the normal planting area (32): and excavating a planting pit, and conventionally planting the arbor saplings in a manner of being vertical to the ground.

2. The method of claim 1, wherein the method comprises the steps of: in the step A, the fixed columns (11) are wooden columns with the length of 3m +/-0.5 m and the diameter of 10cm +/-2 cm, one end of each fixed column (11) is sharpened and then is driven into the ground with the depth of 50cm +/-10 cm, 2.5m +/-0.5 m is left on the ground, and the interval between every two adjacent fixed columns (11) is 2.5m +/-1 m; the fixed pile (13) is a wooden pile with the length of 70cm +/-10 cm, and one end of the wooden pile is sharpened and then obliquely driven into the ground by 50cm +/-10 cm.

3. The method of claim 1 or 2, wherein the method comprises the following steps: in the step one B, the sun-screening net (14) is an anti-aging sun-screening net, and the width of the sun-screening net (14) is close to the height of the ground part of the fixing column (11); the sun-proof nylon rope is characterized in that the traction rope (12), the fixing rope (15) and the connecting rope (16) are sun-proof nylon ropes, the diameters of the traction rope (12) and the fixing rope (15) are both 1.5cm, and the diameter of the connecting rope (16) is both 0.5 cm.

4. The method of claim 3, wherein the method comprises the steps of: the included angle between the traction rope (12) and the fixed column (11) is 45 degrees.

5. The method of claim 1, wherein the method comprises the steps of: at least 3 nodal rings of the arundo donax linn propagules trimmed in the step A are reserved; the soaking part of the propagule is provided with at least 1 nodal ring; in the step B, the excavation width and the excavation depth of the arundo donax planting ditch are both 30cm, and the planting soil laid in the ditch is nutrient soil formed by uniformly mixing excavated soil, organic fertilizer and water-retaining agent; the nutrient soil is laid to 1/3 deep in the ditch before vegetation planting, and the rest nutrient soil is backfilled after seedling planting.

6. The method of claim 5, wherein the method comprises the steps of: the reed planting time is in the early stage of rainy season, and the reed and the nursery stock for vegetation restoration are planted simultaneously or before the nursery stock for vegetation restoration is planted; the planting interval of the two connected clusters of the arundo donax linn is 20cm, and each cluster of the arundo donax linn comprises 2-3 seedlings.

7. The method of claim 1, wherein the method comprises the steps of: in the third step A, the width of the oblique planting area (31) is 10-20 m; selecting a bag-packed arbor seedling from the saplings in the step III; and step three C, the top surface and the bottom surface of the planting hole (313) are both rectangular structures, the length of the top surface is 60-80 cm, the width of the top surface is 40cm, and the length and the width of the bottom surface and the depth of the planting hole (313) are all 40 cm.

8. The method of claim 7, wherein the method comprises the steps of: the larger the inclination angle gradient of the planting hole (313), the longer the long side of the hole.

9. The method of claim 8, wherein the method comprises the steps of: in the third step, the row spacing and the plant spacing of each row of the dense planting area (311) in the oblique planting area (31) are both 1 meter; the plant spacing of the transition region (312) is 1m, and the row spacing is 2 m; thirdly, planting the arbor saplings in the oblique planting area (31) in a staggered mode; the planting rows of the arbor seedlings in the close planting area (311) and the transition area (312) are 3-5 rows; and step three F, the planting density of the normal planting area (32) is 2 x 2m or 3 x 3 m.

10. The method of claim 9, wherein the method comprises the steps of: the sapling planting inclination angle of the dense planting area (311) in the oblique planting area (31) is 30 degrees +/-10 degrees, the sapling planting inclination angle of the transition area (312) is 45 degrees +/-10 degrees-60 +/-10 degrees, and 3 rows of saplings are planted in each inclination area.

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