Method for recovering slope of alpine meadow project

Abstract

The invention discloses a method for restoring an alpine meadow engineering slope, and relates to the technical field of ecology. The method comprises the following steps: covering surface soil on a side slope of the alpine meadow to be repaired to form a slope surface; placing potentilla anserine seeds on the slope surface; shading and watering. An indigenous species potentilla anserine is used as a grass seed for ecological restoration of the alpine meadow side slope, and the potentilla anserine can adapt to a severe environment with low temperature and barren soil, is high in growth speed and can quickly improve the vegetation coverage of the slope surface; the potentilla anserine can maintain the diversity of local alpine meadow biocenosis and prevent alien species from invading; sunshade not only can prevent sunlight from directly irradiating the soil, reduce the soil temperature of the surface soil of the side slope of the alpine meadow and maintain the soil moisture, but also can reduce the loss of the surface soil and the potentilla anserine seeds in the'vacuum period 'of vegetation protection. By means of the method, the slope vegetation in the alpine meadow area can be rapidly restored, and the obvious effect on ecological restoration of the slope in the alpine meadow area is achieved.

Description

Technical Field

[0001] The present application relates to the field of ecological technology, and in particular to a method for restoring the slope of an alpine meadow project, with a particular focus on using environmentally friendly and sustainable vegetation restoration technology to improve the self-recovery capacity and biodiversity of the ecosystem. Background Art

[0002] Alpine meadows, also known as alpine meadows, are a type of grassland that develops on plateaus and mountains under cold environmental conditions. Alpine meadows are generally not distributed in a zonal manner. In my country, they are mainly distributed in the eastern and southeastern mountains of the Qinghai-Tibet Plateau, as well as the central Asian mountains such as the Qilian Mountains, Tianshan Mountains and Pamir Mountains, extending eastward to the Taibai Mountains in the Qinling Mountains and the Xiaowutai Mountains in Hebei Province. They are 3,200 to 5,200 meters above sea level, with a high-cold, moderately humid climate, sufficient sunshine, and an annual precipitation of 350 to 550 mm. The soil is mainly alpine meadow soil.

[0003] The alpine meadow ecosystem is highly fragile and has low resistance to disturbance. Once the vegetation is damaged, it is very difficult to recover. In recent years, the development of road transportation has resulted in a large area of ​​exposed slopes. The exposed surface and soft soil are the main causes of road soil erosion, further exacerbating grassland degradation. Slope vegetation restoration and reconstruction are important measures to prevent slope soil erosion.

[0004] The main problem with current road slope vegetation restoration technology is the introduction of a large number of alien species that are incompatible with the original ecosystem, such as vetiver, clover and ryegrass. These species have poor adaptability to the climate, soil and other environmental factors in the slope area, which will not only result in a single community structure, low species diversity, poor stability, low restoration results, and easy "secondary degradation"; but also are accompanied by high maintenance costs and the risk of potential biological invasion. Summary of the invention

[0005] In view of the limitations of existing technologies in alpine meadow slope restoration, especially the ecological inadaptability and high maintenance cost caused by the use of non-native species, this application proposes a method for alpine meadow engineering slope restoration using the native plant Potentilla anserina. This method aims to provide an environmentally friendly and cost-effective solution to improve and accelerate the natural restoration process of alpine meadows.

[0006] The embodiment of the present application is implemented as follows: a method for restoring an alpine meadow engineering slope, comprising: Cover the slope of the alpine meadow to be restored with topsoil to form a slope surface; Place the seeds of Potentilla anserina on the slope; Shade and watering.

[0007] Optionally, in some embodiments of the present application, the alpine meadow is an alpine meadow on the Qinghai-Tibet Plateau; and / or The topsoil is the topsoil stripped during the slope construction of the alpine meadow; and / or The thickness of the topsoil is 15 cm to 40 cm; and / or The side slope is repaired and leveled before covering the topsoil.

[0008] Optionally, in some embodiments of the present application, before placing the Potentilla anserina seeds on the slope surface, the step further includes first soaking the Potentilla anserina seeds in a first solvent and then sterilizing them.

[0009] Optionally, in some embodiments of the present application, the first solvent includes one or more of tap water and distilled water; and / or The first soaking time is 6 h to 20 h.

[0010] Optionally, in some embodiments of the present application, the disinfection is specifically to place the Potentilla anserina seeds after the first soaking in a disinfectant for a second soaking, followed by rinsing with running water and drying in the shade.

[0011] Optionally, in some embodiments of the present application, the disinfectant comprises one or more of potassium permanganate solution and sodium hypochlorite solution; and / or The second soaking time is 15 min to 45 min.

[0012] Optionally, in some embodiments of the present application, the mass concentration of the potassium permanganate solution is 0.1%~0.8%.

[0013] Optionally, in some embodiments of the present application, the sowing rate of the Potentilla anserina seeds is 10 g / m 2 ~15g / m 2 ; and / or Placing the Potentilla anserina seeds on the slope surface comprises mixing the Potentilla anserina seeds with dry fine soil and then evenly placing the mixture on the slope surface; and / or The method comprises placing the Potentilla anserina seeds on the slope and then covering it with a sunshade net.

[0014] Optionally, in some embodiments of the present application, the volume ratio of the Potentilla anserina seeds to the dry fine soil is (0.5-2): (1-5); and / or The method of placing the seeds of Potentilla anserina on the slope surface comprises one or more of broadcasting, drilling and spot sowing; and / or The time of covering the sunshade net is 0.5 month to 1.5 month; and / or The particle size of the dry fine soil is less than 0.25 mm.

[0015] Optionally, in some embodiments of the present application, the sowing time is from late April to early May; and / or Within 1 to 3 months of the sowing, the watering is performed to make the soil moisture content reach 15% to 35%.

[0016] The present application provides a method for restoring the slope of an alpine meadow project, using the native species Potentilla anserina as a grass seed for ecological restoration of the slope of an alpine meadow. The native species Potentilla anserina can adapt to the harsh environment of low temperature and poor soil, grows fast, and can quickly increase the vegetation coverage of the slope; the native species Potentilla anserina can maintain the diversity of the local alpine meadow biological community, reducing the risk of ecological invasion and biodiversity destruction caused by the introduction of alien species; shading can not only prevent direct sunlight from hitting the soil, reduce the soil temperature of the slope surface of the alpine meadow, and maintain soil moisture, but the shading equipment can also reduce the loss of surface soil and Potentilla anserina seeds caused by rain impact and runoff erosion during the "vacuum period" of vegetation protection (from the destruction of the original vegetation to the restoration of vegetation). Through the method for restoring the slope of an alpine meadow project of the present application, the slope vegetation in the alpine meadow area can be quickly restored, the natural resilience of the vegetation and the stability of the ecosystem can be enhanced, and it has a significant effect on the ecological restoration of the slope in the alpine meadow area, and is a technical solution that is both economical and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a flow chart of a method for restoring an alpine meadow engineering slope provided in an embodiment of the present application; Figure 2 This application provides the severely degraded road slope condition before restoration; Figure 3 This application provides the growth status of Potentilla anserina on the road slope after restoration. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0020] In this application, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In addition, in the description of this application, the term "including" means "including but not limited to". The terms first, second, third, etc. are used only as labels and do not impose numerical requirements or establish an order.

[0021] In this application, "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0022] In this application, "at least one" means one or more, and "plurality" means two or more. "One or several", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can all mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple.

[0023] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present application; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0024] The technical solution of this application is as follows: First, see Figure 1 The present application embodiment provides a method for restoring an alpine meadow engineering slope, comprising: S01. Cover the slope of the alpine meadow to be restored with topsoil to form a slope surface; S02, placing the seeds of Potentilla anserina on the slope; S03. Shading and watering.

[0025] The present application provides a method for restoring the slope of an alpine meadow project, using the native species Potentilla anserina as a grass seed for ecological restoration of the slope of an alpine meadow. The native species Potentilla anserina can adapt to the harsh environment of low temperature and poor soil, grows fast, and can quickly increase the vegetation coverage of the slope; the native species Potentilla anserina can maintain the diversity of the local alpine meadow biological community, reducing the risk of ecological invasion and biodiversity destruction caused by the introduction of alien species; shading can not only prevent direct sunlight from hitting the soil, reduce the soil temperature of the slope surface of the alpine meadow, and maintain soil moisture, but the shading equipment can also reduce the loss of surface soil and Potentilla anserina seeds caused by rain impact and runoff erosion during the "vacuum period" of vegetation protection (from the destruction of the original vegetation to the restoration of vegetation). Through the method for restoring the slope of an alpine meadow project of the present application, the slope vegetation in the alpine meadow area can be quickly restored, the natural resilience of the vegetation and the stability of the ecosystem can be enhanced, and it has a significant effect on the ecological restoration of the slope in the alpine meadow area, and is a technical solution that is both economical and environmentally friendly.

[0026] The native species Potentilla anserina of the present application can better adapt to the local climate and soil, can form a plant community with stable structure and function, can promote rapid positive succession of the community, thereby reducing the management cost of slope vegetation; it is also beneficial to maintain the species diversity of the slope community, thereby reducing the risk of invasion by alien species, so as to achieve long-term and sustainable restoration of the slopes of alpine meadow projects.

[0027] In the S01: In some embodiments, the alpine meadow is an alpine meadow on the Qinghai-Tibet Plateau.

[0028] Furthermore, the alpine meadow on the Qinghai-Tibet Plateau is the Zoige alpine meadow.

[0029] In some embodiments, the topsoil is the topsoil stripped during slope construction of an alpine meadow.

[0030] In some embodiments, the thickness of the topsoil is 15 cm to 40 cm, for example, 15 cm, 16 cm, 18 cm, 20 cm, 22 cm, 24 cm, 28 cm, 30 cm, 32 cm, 35 cm, 38 cm, 40 cm, etc. Within the thickness range, it is beneficial to the germination of the seeds of Potentilla anserina, and can also promote the colonization of other species in the soil seed bank, such as sedge, geranium, donkey hoof grass, and philadelphus, and in addition, it is beneficial to form a flat slope.

[0031] It can be understood that the slope is formed to be a flat arable slope.

[0032] In some embodiments, the slope is smoothed before covering with topsoil.

[0033] In the S02: In some embodiments, before placing the Potentilla anserina seeds on the slope surface, the method further includes first soaking the Potentilla anserina seeds in a first solvent and then sterilizing them.

[0034] Furthermore, the first solvent includes one or more of tap water and distilled water.

[0035] Further, the first soaking time is 6 h to 20 h, such as 6 h, 8 h, 9 h, 10 h, 11 h, 12 h, 13 h, 14 h, 15 h, 16 h, 17 h, 18 h, 19 h, 20 h, etc. Within the time range of the first soaking, it is beneficial to accelerate the germination of the Potentilla anserina seeds.

[0036] In some embodiments, the disinfection is specifically to place the Potentilla anserina seeds after the first soaking in a disinfectant for a second soaking, followed by rinsing with running water and drying in the shade.

[0037] It can be understood that the water used for flushing can be selected from tap water.

[0038] Furthermore, the disinfectant includes one or more of potassium permanganate solution, sodium hypochlorite solution, and 75% alcohol solution.

[0039] Furthermore, the mass concentration of the potassium permanganate solution is 0.1% to 0.8%, for example, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, etc. Within the mass concentration range, pathogens on the surface of the Potentilla anserina seeds after the first soaking can be killed.

[0040] Further, the second soaking time is 15 min to 45 min, such as 15 min, 16 min, 18 min, 20 min, 22 min, 25 min, 28 min, 30 min, 32 min, 33 min, 36 min, 38 min, 40 min, etc. Within the time range of the second soaking, it is beneficial for the disinfectant to fully disinfect the Potentilla anserina seeds after the first soaking, thereby ensuring a high germination rate.

[0041] In some embodiments, the sowing rate of Potentilla anserina seeds is 10 g / m 2 ~15 g / m 2 , for example 10 g / m 2 , 11g / m 2 , 12 g / m 2 , 13 g / m 2 , 14 g / m 2 , 15 g / m 2etc. Within the sowing rate range, it is beneficial to form a suitable density of Potentilla anserina to repair the slope of the alpine meadow.

[0042] In some embodiments, placing the Potentilla anserina seeds on the slope surface includes mixing the Potentilla anserina seeds with dry fine soil and then evenly spreading the mixture on the slope surface.

[0043] Furthermore, the particle size of the fine soil is less than 0.25 mm, for example, it can be 0.05, 0.08, 0.1, 0.15, 0.18, 0.2, 0.22, 0.24, etc.

[0044] Further, the volume ratio of the Potentilla anserina seeds to the dry fine soil is (0.5-2): (1-5), for example, 0.5:1, 0.5:1.5, 0.5:2, 0.5:3, 0.5:3.5, 0.5:4, 0.5:4.5, 0.5:5, 1:1, 1:1.5, 1:2, 1:3, 1:3.5, 1:4, 1:4.5, 1:5, 2:1, 2:1.5, 2:2, 2:3, 2:3.5, 2:4, 2:4.5, 2:5, etc. Within the volume ratio range, the Potentilla anserina seeds are evenly distributed on the slope surface, reducing the risk of being preyed upon by the Potentilla anserina seeds.

[0045] In some embodiments, the method of placing the Potentilla anserina seeds on the slope surface comprises sowing.

[0046] Furthermore, the sowing time is from late April to early May.

[0047] Furthermore, the sowing includes one or more of broadcast sowing, row sowing and spot sowing.

[0048] In the S03: In some embodiments, the Potentilla anserina seeds are placed on the slope and then covered with a shade net.

[0049] It can be understood that the covering sunshade net is specifically spread out and laid flat from top to bottom, fixed with fixing parts to the bottom of the slope, and the width of the overlapping parts of adjacent sunshade nets is about 18 cm to 25 cm.

[0050] In some embodiments, the covering time of the sunshade net is 0.5 month to 1.5 months, such as 0.5 month, 0.6 month, 0.8 month, 1 month, 1.2 month, 1.3 month, 1.4 month, 1.5 month, etc. Within the time range, it is beneficial for the seedlings of Potentilla anserina to grow well and prevent burns, wilting and death.

[0051] In some embodiments, within 1 to 3 months after sowing, the watering is to make the soil moisture content be 15% to 35%, for example, 15%, 18%, 20%, 22%, 25%, 28%, 30%, 32%, 35%, etc. Within the moisture content range, the emergence rate of Potentilla anserina seeds is good.

[0052] The present application is described in detail below through specific embodiments. The following embodiments are only partial embodiments of the present application and are not limitations of the present application.

[0053] Example 1 This embodiment provides a method for restoring an alpine meadow engineering slope, comprising: Step 1: Slope matrix treatment: select the alpine meadow to be repaired on the Qinghai-Tibet Plateau, repair and level the slope surface of the alpine meadow to be repaired, and cover the topsoil stripped during the road construction process to form a flat slope surface, wherein the covering depth is 25 cm; Step 2, seed treatment: soak the seeds of Potentilla anserina in tap water for 12 hours before sowing, soak the soaked seeds of Potentilla anserina in 0.5% potassium permanganate solution for 30 minutes, rinse with running water, and dry in the shade; Step 3, sowing: In late April of the same year, mix the shade-dried Potentilla anserina seeds with dry fine soil (soil particle size less than 0.25 mm), and then evenly sow them on the slope. The volume ratio of Potentilla anserina seeds to dry fine soil (soil particle size less than 0.25 mm) is 1:3, and the sowing rate of Potentilla anserina seeds is 10 g / m 2 ; Step 4, management measures, cover the sunshade net immediately after sowing. The sunshade net is laid from top to bottom and flattened to the bottom of the slope, fixed with fixing parts. The overlapping width of adjacent sunshade nets is about 20 cm. The shade net is covered for 1 month. Within 2 months after sowing, the frequency and amount of watering are determined according to climatic conditions such as rainfall, so that the soil volume moisture content is maintained at 25%.

[0054] Example 2 This embodiment is basically the same as the embodiment 1, except that the soil covering depth in this embodiment is 15 cm; before sowing, the seeds of Potentilla anserina are soaked in tap water for 6 h, and the soaked seeds of Potentilla anserina are soaked in 0.1% potassium permanganate solution for 45 minutes; the volume ratio of Potentilla anserina seeds to dry fine soil (soil particle size is less than 0.25 mm) is 0.5:1, and the sowing amount of Potentilla anserina seeds is 10 g / m 2 The overlapping width of adjacent shade nets is about 18 cm, and the shade nets are covered for 0.5 months. Within 1 month after sowing, the soil volume moisture content is maintained at 15%.

[0055] Example 3 This embodiment is basically the same as the embodiment 1, except that the soil covering depth in this embodiment is 20 cm; before sowing, the seeds of Potentilla anserina are soaked in tap water for 10 h, and the soaked seeds of Potentilla anserina are soaked in 0.3% potassium permanganate solution for 40 minutes; the volume ratio of Potentilla anserina seeds to dry fine soil (soil particle size is less than 0.25 mm) is 2:1, and the sowing amount of Potentilla anserina seeds is 11 g / m 2 The overlapping width of adjacent shade nets is about 22 cm. The shade nets are covered for 1.5 months. Within 2 months after sowing, the soil volume moisture content is maintained at 20%.

[0056] Example 4 This embodiment is basically the same as the embodiment 1, except that the soil covering depth in this embodiment is 23 cm; before sowing, the seeds of Potentilla anserina are soaked in tap water for 15 h, and the soaked seeds of Potentilla anserina are soaked in 0.6% potassium permanganate solution for 28 minutes; the volume ratio of Potentilla anserina seeds to dry fine soil (soil particle size is less than 0.25 mm) is 2:5, and the sowing amount of Potentilla anserina seeds is 12 g / m 2 The overlapping width of adjacent shade nets was about 23 cm, and the shade nets were covered for 1.2 months. Within 2 months after sowing, the soil volume moisture content was maintained at 28%.

[0057] Example 5 This embodiment is basically the same as the embodiment 1, except that the soil covering depth in this embodiment is 30 cm; before sowing, the seeds of Potentilla anserina are soaked in tap water for 18 h, and the soaked seeds of Potentilla anserina are soaked in 0.7% potassium permanganate solution for 23 minutes; the volume ratio of Potentilla anserina seeds to dry fine soil (soil particle size is less than 0.25 mm) is 1:1, and the sowing amount of Potentilla anserina seeds is 13 g / m 2 The overlapping width of adjacent shade nets was about 24 cm, and the shade nets were covered for 1.2 months. Within 2 months after sowing, the soil volume moisture content was maintained at 30%.

[0058] Example 6 This embodiment is basically the same as the embodiment 1, except that the soil covering depth in this embodiment is 40 cm; before sowing, the seeds of Potentilla anserina are soaked in tap water for 20 h, and the soaked seeds of Potentilla anserina are soaked in 0.8% potassium permanganate solution for 15 minutes; the volume ratio of Potentilla anserina seeds to dry fine soil (soil particle size is less than 0.25 mm) is 1:4, and the sowing amount of Potentilla anserina seeds is 14 g / m 2The overlapping width of adjacent shade nets is about 25 cm. The shade nets are covered for 1 month. Within 3 months after sowing, the soil volume moisture content is maintained at 30%.

[0059] Application Examples See also Figure 2 and Figure 3 This embodiment provides a method for restoring an alpine meadow engineering slope, comprising: Step 1: Slope matrix treatment: select an auxiliary road slope with a width of 8 m and a length of 100 m, with a slope of 38°, repair and level the slope surface, and cover the topsoil stripped during road construction with a covering depth of 25 cm; Step 2. Grass seed treatment: Soak the grass seeds in tap water for 12 hours before sowing and disinfect them. The disinfection method is to soak the seeds in 0.5% potassium permanganate solution for 30 minutes, rinse with running water, and dry in the shade.

[0060] Step 3: Sowing: In late April of the same year, mix the seeds of Potentilla anserina with dry fine soil (soil particle size less than 0.25 mm) in a volume ratio of 1:3, and evenly sow them on the slope surface at a sowing rate of 15 g / m 2 ; Step 4, management measures: cover the sunshade net immediately after sowing. The sunshade net is laid out from top to bottom and flattened to the bottom of the slope. It is fixed with fixing parts. The overlapping width of adjacent sunshade nets is about 20 cm. The length of time for covering the sunshade net is about 1 month to ensure that the seedlings will not be burned, wilted and die due to exposure. Within 2 months after sowing, the frequency and amount of watering are determined according to climatic conditions such as rainfall, so that the soil volume moisture content is maintained at 20%~30% to ensure the emergence rate of seeds.

[0061] The method in this application example is used to restore vegetation on alpine meadow slopes on the Qinghai-Tibet Plateau. In late April 2023, the trial began in the Xicheng Railway construction area of ​​the Zoige Plateau. Four months later, the total community coverage of the restored slopes was 80% to 90%, which increased by 30% to 50% compared with the naturally restored slopes of the control group (without taking any technical measures). This shows that the alpine meadow slope vegetation restoration method provided by the present invention can effectively improve the slope vegetation coverage and achieve the restoration of alpine meadow slopes. Figure 2 For this application example, the road slope condition was severely degraded before restoration. Figure 3 This is the growth status of Potentilla anserina on the road slope after restoration in this application example.

[0062] The above is a detailed introduction to a method for restoring the slope of an alpine meadow project provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for restoring alpine meadow engineering slope, characterized in that: include: Cover the slope of the alpine meadow to be restored with topsoil to form a slope surface; Place the seeds of Potentilla anserina on the slope; Shade and watering.

2. The method for restoring the slope of an alpine meadow project according to claim 1, characterized in that: The alpine meadow is an alpine meadow on the Qinghai-Tibet Plateau; and / or The topsoil is the topsoil stripped during the slope construction of the alpine meadow; and / or The thickness of the topsoil is 15 cm to 40 cm; and / or The side slope is repaired and leveled before covering the topsoil.

3. The method for restoring the slope of an alpine meadow project according to claim 1 or 2, characterized in that: Before placing the Potentilla anserina seeds on the slope, the method further comprises soaking the Potentilla anserina seeds in a first solvent and then sterilizing them.

4. The method for restoring the slope of an alpine meadow project according to claim 3, characterized in that: The first solvent includes one or more of tap water and distilled water; and / or The first soaking time is 6 h to 20 h.

5. The method for restoring the slope of an alpine meadow project according to claim 3 or 4, characterized in that: The disinfection specifically comprises placing the seeds of Potentilla anserinae after the first soaking in a disinfectant for a second soaking, then washing with running water and drying in the shade.

6. The method for restoring the slope of an alpine meadow project according to claim 5, characterized in that: The disinfectant comprises one or more of potassium permanganate solution and sodium hypochlorite solution; and / or The second soaking time is 15 min to 45 min.

7. The method for restoring the slope of an alpine meadow project according to claim 6, characterized in that: The mass concentration of the potassium permanganate solution is 0.1% to 0.8%.

8. The method for restoring the slope of an alpine meadow project according to claim 1, characterized in that: The sowing rate of the Potentilla anserina seeds is 10 g / m 2 ~15 g / m 2 ; and / or Placing the Potentilla anserina seeds on the slope surface comprises mixing the Potentilla anserina seeds with dry fine soil and then evenly placing the mixture on the slope surface; and / or The method comprises placing the Potentilla anserina seeds on the slope and then covering it with a sunshade net.

9. The method for restoring the slope of an alpine meadow project according to claim 8, characterized in that: The volume ratio of the Potentilla anserina seeds to the dry fine soil is (0.5-2): (1-5); and / or The method of placing the seeds of Potentilla anserina on the slope surface comprises one or more of broadcasting, row sowing and spot sowing; and / or The time of covering the sunshade net is 0.5 month to 1.5 month; and / or The particle size of the dry fine soil is less than 0.25 mm.

10. The method for restoring the slope of an alpine meadow project according to claim 9, characterized in that: The sowing time is from late April to early May; and / or Within 1 to 3 months of the sowing, the watering is performed to make the soil moisture content reach 15% to 35%.

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