Original ecological restoration method for grassland

Abstract

The invention belongs to the technical field of grassland ecological restoration, and particularly relates to a grassland ecological restoration method which comprises the following steps: preparing seed balls: mixing grassland seeds with auxiliary materials; wherein the auxiliary material is a mixture of starch, corncob powder and methyl dihydrojasmonate in a mass ratio of 1: 100: (0.1-0.5), the water content of the auxiliary material is 40-50%, and the auxiliary material is uniformly mixed with the grass seeds to prepare seed balls; sowing: sowing the seed balls in soil. According to the method, the grassland is repaired based on an artificial grass planting mode, grass seeds and auxiliary materials are compounded to form seed balls, a repairing net of a network structure is made of warps and wefts, and preferably, a water and soil conservation net is laid below the wefts, so that the purposes of increasing the survival rate of the grass seeds and improving the vegetation coverage of the grassland are achieved; an excellent ecological environment is built from multiple aspects of plants, animals, microorganisms and the like, and environmental protection is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of grassland ecological restoration, and specifically relates to a grassland ecological restoration method. Background Art

[0002] Grassland resources include plants, animals, and microorganisms. They have certain scale, quantity, and spatial structure distribution characteristics, a certain distribution area, and production capacity, and can provide energy and materials for the environment. Grasslands have a great impact on ecology. For example, grasslands have the ability to retain water, which can reduce soil erosion; they have the effect of preventing wind and fixing sand, which can reduce land desertification; they have biodiversity and are an important resource bank for animal and plant germplasm; they also have the function of fixing carbon, which plays an important role in maintaining the carbon balance in nature.

[0003] Grassland degradation is a phenomenon of grassland system structure and function decline due to natural or human factors, which can be manifested as reduced vegetation coverage, soil desertification, salinization, etc. Preventing grassland degradation is the main purpose of grassland ecological restoration. The work of grassland ecological restoration needs to follow the basic principles of ecology, select appropriate grass species, water and fertilizer use methods, promote vegetation growth, and thus improve the self-healing ability of grassland.

[0004] Artificial grass planting is a common method for grassland restoration. When grass seeds germinate and grow, they can increase the grassland vegetation coverage rate. However, since the quality of degraded grassland soil is also poor, it is not conducive to the germination and growth of grass seeds. Therefore, it is necessary to provide a grassland restoration method that can promote the germination and growth of grass seeds. Summary of the invention

[0005] In view of the poor quality of degraded grassland soil, which is not conducive to the germination and growth of grass seeds, in order to solve the technical problem of poor grass seed germination, the present invention provides a grassland ecological restoration method, which can shorten the grass seed germination time, promote grass seed growth, accelerate the grassland restoration rate, and be environmentally friendly and energy-saving.

[0006] The object of the present invention is to provide a grassland ecological restoration method, comprising:

[0007] Making bulbs: mixing grass seeds with auxiliary materials; wherein the auxiliary materials are a mixture of starch, corn cob powder, and methyl dihydrojasmonate in a mass ratio of 1:100:0.1-0.5, and the moisture content of the auxiliary materials is 40-50%; the auxiliary materials and grass seeds are mixed evenly to make bulbs;

[0008] Planting: Plant the bulbs in the soil.

[0009] Preferably, in the above-mentioned grassland ecological restoration method, the auxiliary material is starch, corn cob powder, and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.1.

[0010] Preferably, in the above-mentioned grassland ecological restoration method, the mass ratio of grass seeds to auxiliary materials is 1:3-4 based on dry weight.

[0011] Preferably, in the above-mentioned grassland ecological restoration method, the bulb sowing rate is 25-40kg / hectare.

[0012] Preferably, in the above-mentioned grassland ecological restoration method, the structure of the bulb is spherical, ellipsoidal or cylindrical.

[0013] Preferably, the above-mentioned grassland ecological restoration method uses a restoration net with a network structure made of warp and weft, the warp and weft are crisscrossed, and the restoration net is laid on the degraded grassland to be restored; and then the bulbs are sown.

[0014] Preferably, in the above-mentioned grassland ecological restoration method, both the warp and the weft are made of degradable materials; if both the warp and the weft are degradable, the grassland sheet form will be restored after the grass seeds germinate and grow.

[0015] Alternatively, the warp is made of degradable material and the weft is made of sprinkler pipes. After the grass seeds germinate and grow, the warp is degraded and the weft is recycled to restore the grassland sheet.

[0016] Preferably, in the above-mentioned grassland ecological restoration method, a soil and water conservation net is laid below the latitude, and the bulbs are sown on the soil and water conservation net. The grid size of the soil and water conservation net is smaller than the grid size of the restoration net. Then, the bulbs can use the soil and water conservation net as a support to germinate and grow, and will not be easily blown away by wind and sand.

[0017] Preferably, the soil and water conservation net can also be made of degradable materials. After the grass seeds germinate and grow, the soil and water conservation net gradually degrades, and the new grass and its root system achieve the effects of grassland greening and soil and water conservation.

[0018] Preferably, the above-mentioned grassland ecological restoration method is applicable to one or more grass species selected from flat-spiked wheatgrass, alfalfa, tall fescue, bermudagrass, sand reed, sheep fescue, Artemisia frigida, Astragalus obliquus, Imperata cylindrica, Elytium wilfordii, Avellana serrata, acid-resistant grass, awnless bromegrass, Imperata cylindrica, Poa sclerophylla, and Leymus japonicus, and the sowing amount is 25-40 kg / hectare.

[0019] Preferably, the above-mentioned grassland ecological restoration method is used to promote the germination and growth of the grass seeds.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses artificial grass planting to repair grasslands. Grass seeds are compounded with auxiliary materials to form bulbs. Warp and weft threads are used to make a repair net with a network structure. A soil and water conservation net can also be laid under the weft threads, thereby achieving the purpose of increasing the germination rate and survival rate of grass seeds and improving the coverage of grassland vegetation, providing a place for small animals and microorganisms to live, and jointly building an excellent ecological environment from multiple levels such as plants, animals, and microorganisms.

[0022] In addition, since we chose degradable warp materials and soil and water conservation nets, as well as degradable / recyclable weft materials, after the grass seeds germinate and mature, these warps, wefts and soil and water conservation nets can be degraded or recycled, restoring the beautiful landscape of the grassland, which is closer to the natural grassland morphology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention discloses a bulb structure.

[0024] Figure 2 This is a schematic diagram of the repair network distribution of Example 8 of the present invention.

[0025] Figure 3 This is a schematic diagram of the distribution of latitudes, soil and water conservation nets, and bulbs in Example 8 of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand and implement the technical solution of the present invention, the present invention is further described below in conjunction with specific embodiments and drawings.

[0027] In the description of the present invention, unless otherwise specified, all reagents used are commercially available and all methods used are conventional techniques in the art.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] The method of the present invention is based on artificial grass planting to restore grasslands, so as to achieve the purpose of increasing grassland vegetation coverage. After the vegetation coverage is increased, it provides a place for small animals and microorganisms to live, and builds an excellent ecological environment from multiple levels such as plants, animals, and microorganisms. It is of great help to repair the ecological environment and has good application prospects. It is an environmental protection work that is very helpful for repairing the grassland environment.

[0031] In some embodiments, see Figure 1 The grass seeds and auxiliary materials are compounded to form bulbs. The bulbs are of large mass and are not easily blown away by wind and sand. The auxiliary materials in the bulbs have the chemical effect of absorbing water and promoting the germination of grass seeds. In the present invention, the design of the "bulb" works from the physical quality and chemical levels to achieve the effect of efficiently promoting the germination and growth of grass seeds, which is beneficial to shorten the grassland ecological recovery time and save time cost.

[0032] In some embodiments, the present invention uses a repair net with a network structure made of warp 1 and weft 2, and the warp 1 and weft 2 are arranged in a crisscross pattern. The repair net is laid on the degraded grassland to prevent wind and fix sand. Since grass seeds are generally light in weight, large wind and sand can easily blow away the freshly sown grass seeds. After the present invention combines the seed bulbs with the repair net, when the seed bulbs are sown in the network structure, the loss of the seed bulbs and the grass seeds inside them can be reduced.

[0033] In some embodiments, the structures of the warp 1 and the weft 2 used in the repair net of the present invention are different. For example, the warp 1 is made of a degradable material, such as a degradable mulch film or a degradable rope, and the weft 2 is a sprinkler pipe. The sprinkler pipe is a water-permeable pipe, or a longer pipe formed by connecting multiple sections of sprinkler pipes through joints. A plurality of micropores are opened on the pipe wall of the sprinkler pipe, and water flows out of these micropores for sprinkler irrigation. Preferably, the diameter range of the micropores of the sprinkler pipe is set at 3-5 mm. After the bulbs are sown, the warp 1 and the weft 2 are laid, and the mesh size of the repair net can be set to 10-100 cm × 10-100 cm. Weft line 2 is used for sprinkler irrigation. The liquid for sprinkler irrigation can be water or liquid fertilizer. Correspondingly, the grassland is irrigated or liquid fertilizer is applied. After the grass seeds germinate and grow on a large scale, warp line 1 is not recycled but allowed to degrade naturally. The sprinkler pipe is recycled and reused. After the grass seeds germinate on a large scale, the roots of the grass have been combined with the soil, producing some soil fixing and soil and water conservation effects. At this time, even if weft line 2 is removed, it will not affect the subsequent grass growth. On the contrary, after removing weft line 2, it is the repeated reuse of weft line 2, which saves resources and is environmentally friendly.

[0034] In some embodiments, the present invention lays a soil and water conservation net 3 below the latitude 2, and the bulbs are sown on the soil and water conservation net 3. The mesh size of the soil and water conservation net 3 is smaller than the mesh size of the repair net. Then, the water flowing out of the latitude 2 first contacts the bulbs and the grass seeds thereon, and then infiltrates into the soil. The grass seeds contact and absorb more water, which is conducive to germination and growth. It should be noted that the soil and water conservation net can also be made of degradable materials. After the grass seeds germinate and grow, the soil and water conservation net gradually degrades, and the newly grown grass and its root system achieve the effect of grassland greening and soil and water conservation.

[0035] In Examples 3-4 of the present invention, the grassland restoration experimental area and soil profiles are as follows:

[0036] 1. Basic Information

[0037] The Ulagai Experimental Area is located in the central part of the Inner Mongolia Autonomous Region and the northeast of Xilin Gol League, at the middle foot of the Greater Khingan Range. It borders the Xing'an League to the east, the Ulagai Sumu of East Ujumchin Banner to the south and west, and the Mandu Bulgari Sumu to the north. It is an important gateway for Xilingol League to open up to the northeast.

[0038] 2. Topography

[0039] The Ulagai experimental area is located at the junction of the low mountain and hill edge of the western foot of the Greater Khingan Range and the northeastern part of the Xilin Gol Plateau, and is composed of low mountains and hills, valleys and flat beaches. The altitude is between 850.00 and 1026.04 meters.

[0040] 3. Hydrology and water system

[0041] Surface water: mainly the Ulagai River and the Ulagai Reservoir. The Ulagai River is a seasonal river that originates from the Greater Khingan Mountains and has an annual runoff of 297 million m 3 The average annual runoff is 113 million m 3 The annual average flow is 3.58 m / s. The Ulagai Reservoir is a national large (II) type reservoir, with a main building level of 2 and a total storage capacity of 248 million m 3 .

[0042] Groundwater: mainly includes bedrock fissure water in low mountain and hilly areas, pore-fissure water in red layers in wavy high plains, and pore water in river valley basins. The bedrock fissure water in low mountain and hilly areas is mainly distributed in the broken zones of granite, basalt, and metamorphic rocks in Bogeda Mountain and the northern low mountain and hilly areas. The pore water in the river valley basin is mainly distributed in the Ulagai River valley basin area. The upper part is the groundwater or confined water of the Quaternary river valley alluvial, alluvial lake, and lake deposits. The thickness of the aquifer varies from place to place, generally 9-75m. The water volume is most abundant in the ancient river channel, with a burial depth greater than 10m, a water level less than 10m, and a water volume of up to 100m 3 / h.

[0043] 4. Climate conditions

[0044] Located in the mid-latitude region, it has a semi-humid and semi-arid northern temperate monsoon continental climate, with long and cold winters, dry and windy springs, short and mild autumns, hot and rainy summers, a distinct alternation of the four seasons, and a large temperature difference between day and night.

[0045] In terms of precipitation, precipitation increases from southeast to northwest, with an average annual precipitation of 278 mm, mainly concentrated in June, July and August, with an average precipitation of more than 187 mm in these three months, accounting for nearly 70% of the annual precipitation. The average number of days with precipitation over the years is 83 days, and 46.6 days from May to September is the concentrated rainfall period, accounting for 56.2% of the number of days with precipitation.

[0046] In terms of temperature, the annual average temperature is 0.3℃. The hottest month is July, with an average temperature of 20.9℃ and an extreme maximum temperature of 39.1℃. The coldest month is January, with an average temperature of -22.1℃ and an extreme minimum temperature of -41.8℃. The effective accumulated temperature ≥10℃ throughout the year is 1900-2100℃, and the frost-free period is 90-110d.

[0047] In terms of sunshine, the total sunshine hours are relatively long, with an average of 3171.1 hours and an annual sunshine rate of 71%, making it one of the regions with the most sunshine in my country.

[0048] 5. Soil characteristics

[0049] The Ulagai experimental area is located in the transition zone from the chernozem area to the chestnut soil area in the Greater Khingan Range. The soil is mainly chernozem, with a small part being chestnut soil, marsh soil and meadow soil. The amount of organic matter accumulated in chernozem is greater than the amount of decomposition, and the potential fertility is relatively high. In addition, the groundwater level is high and the surface water is abundant, so the soil water content is relatively high. Chestnut soil is a calcified soil with a distinct chestnut humus layer and a calcium carbonate deposition layer formed by the humus accumulation process and calcium accumulation process under the dry steppe vegetation. The upper part of the marsh soil contains a large amount of organic matter or peat, the lower part is the tephra layer, and some of the middle layers have a rust-colored transition layer. It is a soil with strong organic matter accumulation and reduction. Meadow soil is distributed near the Ulagai Reservoir and the Ulagai River. It is directly infiltrated by groundwater, has sufficient water supply, and has a high organic matter content.

[0050] 6. Grassland vegetation

[0051] The Ulagai Experimental Area belongs to the northern grassland area - Xilin Gol grassland area, and is one of the best-preserved natural meadow grasslands in Inner Mongolia Autonomous Region. It belongs to the source basin of the Ulagai River system at the western foot of the Greater Khingan Range, with meadow grassland and wetland vegetation as the main ecological landscape, and a complex ecosystem type. It is an important node of my country's northern ecological barrier.

[0052] The present invention is aimed at the experimental area of ​​the Ulagai degraded grassland. In this experimental area, soil degradation is mainly manifested in easy loss of water and soil, low vegetation coverage, and low germination rate of grass seeds in existing artificial grass planting technology, which brings difficulties to grassland restoration work. Based on this, the present invention has developed a new restoration method, which uses the promotion of grass seed germination as the main means and the maintenance of water and soil as an auxiliary means to increase the grassland vegetation coverage. In addition, in some embodiments of the present invention, we also cooperate with the soil fixing method of warp 1, latitude 2, and soil and water conservation net 3, and finally further increase the grassland vegetation coverage.

[0053] Some specific embodiments of the present invention are introduced below. Note that in the following embodiments and control experiments, starch, corncob powder and methyl dihydrojasmonate are all commercially available; starch is sweet potato starch, purchased from Jinan Dingge Biotechnology Co., Ltd.; corncob powder is purchased from Gaotang County Yide Agriculture and Animal Husbandry Co., Ltd.; methyl dihydrojasmonate, CAS No. 24851-98-7, is purchased from Jinan Mingxin Chemical Co., Ltd.

[0054] Example 1

[0055] A grassland ecological restoration method comprises the following steps:

[0056] Step 1: Make bulbs

[0057] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:3 (based on dry weight).

[0058] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.1. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with the grass seeds and pressed into balls in a spherical mold.

[0059] The structure of the seed ball can be spherical, ellipsoidal or cylindrical, etc. The embodiments of the present invention uniformly adopt a sphere with a diameter of 1 cm, and the shape of the seed ball will not be described in detail below.

[0060] Second, sowing

[0061] Plant the bulbs in the soil.

[0062] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0063] Example 2

[0064] A grassland ecological restoration method comprises the following steps:

[0065] Step 1: Make bulbs

[0066] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:4 (based on dry weight).

[0067] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.1. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with the grass seeds and pressed into balls in a spherical mold.

[0068] The embodiments of the present invention and the control test uniformly adopt spheres with a diameter of 1 cm.

[0069] Second, sowing

[0070] Plant the bulbs in the soil.

[0071] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0072] Example 3

[0073] A grassland ecological restoration method comprises the following steps:

[0074] Step 1: Make bulbs

[0075] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:4 (based on dry weight).

[0076] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.3. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with the grass seeds and pressed into balls in a spherical mold.

[0077] The embodiments of the present invention and the control test uniformly adopt spheres with a diameter of 1 cm.

[0078] Second, sowing

[0079] Plant the bulbs in the soil.

[0080] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0081] Example 4

[0082] A grassland ecological restoration method comprises the following steps:

[0083] Step 1: Make bulbs

[0084] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:4 (based on dry weight).

[0085] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.5. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with grass seeds and pressed into balls in a spherical mold.

[0086] The embodiments of the present invention and the control test uniformly adopt spheres with a diameter of 1 cm.

[0087] Second, sowing

[0088] Plant the bulbs in the soil.

[0089] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0090] Example 5

[0091] A grassland ecological restoration method comprises the following steps:

[0092] Step 1: Make bulbs

[0093] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:4 (based on dry weight).

[0094] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.1. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 40%, and then the auxiliary material is evenly mixed with the grass seeds and pressed into balls in a spherical mold.

[0095] The embodiments of the present invention and the control test uniformly adopt spheres with a diameter of 1 cm.

[0096] Second, sowing

[0097] Plant the bulbs in the soil.

[0098] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0099] Control trial 1

[0100] A grassland ecological restoration method comprises the following steps:

[0101] Step 1: Make bulbs

[0102] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:3 (based on dry weight).

[0103] The auxiliary material is starch. Water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is mixed evenly with the grass seeds and pressed into balls in a spherical mold.

[0104] The bulbs used were spherical balls with a diameter of 1 cm.

[0105] Second, sowing

[0106] Plant the bulbs in the soil.

[0107] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0108] Control trial 2

[0109] A grassland ecological restoration method comprises the following steps:

[0110] Step 1: Make bulbs

[0111] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:3 (based on dry weight).

[0112] The auxiliary material is corn cob powder. Water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is mixed evenly with grass seeds and pressed into balls in a spherical mold.

[0113] The bulbs used were spherical balls with a diameter of 1 cm.

[0114] Second, sowing

[0115] Plant the bulbs in the soil.

[0116] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0117] Control trial 3

[0118] A grassland ecological restoration method comprises the following steps:

[0119] Step 1: Make bulbs

[0120] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:3 (based on dry weight).

[0121] The auxiliary material is starch and methyl dihydrojasmonate mixed in a mass ratio of 101:0.1. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with the grass seeds and pressed into balls in a spherical mold.

[0122] The bulbs used were spherical balls with a diameter of 1 cm.

[0123] Second, sowing

[0124] Plant the bulbs in the soil.

[0125] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0126] Control experiment 4

[0127] A grassland ecological restoration method comprises the following steps:

[0128] Step 1: Make bulbs

[0129] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:3 (based on dry weight).

[0130] The auxiliary material is corn cob powder and methyl dihydrojasmonate mixed in a mass ratio of 101:0.1. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with grass seeds and pressed into balls in a spherical mold.

[0131] The bulbs used were spherical balls with a diameter of 1 cm.

[0132] Second, sowing

[0133] Plant the bulbs in the soil.

[0134] Third, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintained the same conventional management method.

[0135] The bulbs prepared in the above embodiments and control experiments were tested under laboratory soil conditions. In the potted experiment, the formula of the experimental soil was: 100kg of garden soil + 3kg of wood ash + 500g of perlite, with an initial moisture content of 30%. The test temperature was 10-25°C. The experimental time was calculated from the sowing date and lasted for 1 week. During the experiment, all test groups adopted the same seed soaking method, sowing method, and the same irrigation amount, and the soil moisture content was maintained at 35% after sowing.

[0136] The experimental grass species were flat-spiked wheatgrass, awnless bromegrass, and Cynodon dactylon.

[0137] The test objects are seed germination rate, seedling growth rate, and average germination time.

[0138] Note that before making the bulbs, count the number of seeds corresponding to each bulb. When calculating the germination rate, the bulbs can be slightly broken apart. Set up 3 parallel tests for each group and take the average value.

[0139] The results are shown in Table 1 below.

[0140] Table 1 Ball test results

[0141]

[0142]

[0143]

[0144] Control test 1 and control test 2 are single factor experiments, respectively exploring the effects of starch and corn cob powder on the germination and growth of grass seeds. Since it is difficult to press methyl dihydrojasmonate into a ball shape after mixing with grass seeds, a single factor experiment of methyl dihydrojasmonate is not performed. Control test 3 uses starch and methyl dihydrojasmonate as auxiliary materials, and control test 4 uses corn cob powder and methyl dihydrojasmonate as auxiliary materials. Examples 1-5 are auxiliary materials made by mixing starch, corn cob powder and methyl dihydrojasmonate. The results of Table 1 show that the methods of Examples 1-5 can promote the germination and growth of grass seeds better than the methods of each group of control tests. Compared with control tests 1 and 2, the double-factor composite effect of control tests 3 and 4 is also better.

[0145] It should be noted that starch has the function of an adhesive. When starch is mixed with corn cob powder, methyl dihydrojasmonate and grass seeds, the prepared seed balls are not easy to fall apart. Therefore, in actual application, it is preferred to use a mixture of starch, corn cob powder and methyl dihydrojasmonate as an auxiliary material, mix it with grass seeds, and press it into seed balls.

[0146] Example 6

[0147] A grassland ecological restoration method comprises the following steps:

[0148] Step 1: Use warp 1 and weft 2 to make a network structure of the restoration net, the warp 1 and weft 2 are crisscrossed, and the restoration net is laid on the degraded grassland. Warp 1 and weft 2 are both degradable mulch films, the width of the degradable mulch films is 5 cm, and the grid size of the restoration net is set to 100 cm × 100 cm.

[0149] Step 2: Make bulbs

[0150] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:4 (based on dry weight).

[0151] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.5. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with grass seeds and pressed into balls in a spherical mold.

[0152] The bulb structure adopts a spherical ball with a diameter of 1 cm.

[0153] Third, sowing

[0154] Sow the bulbs in the soil at a rate of 40 kg / hectare.

[0155] Fourth, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintains the same conventional management method.

[0156] After the grass seed sowing experiment in the Ulagai experimental area, the seed survival rate was statistically 89%.

[0157] Example 7

[0158] A grassland ecological restoration method comprises the following steps:

[0159] Step 1: Use warp 1 and weft 2 to make a network structure of the restoration net, which is crisscrossed and laid on the degraded grassland. Warp 1 is a degradable mulch film, and weft 2 is a sprinkler pipe. The width of the degradable mulch film is 5 cm, the inner diameter of the sprinkler pipe is 2 cm, and the grid size of the restoration net is set to 100 cm × 100 cm.

[0160] Step 2: Make bulbs

[0161] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:4 (based on dry weight).

[0162] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.5. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with grass seeds and pressed into balls in a spherical mold.

[0163] The bulb is a spherical ball with a diameter of 1 cm.

[0164] Third, sowing

[0165] Sow the bulbs in the soil at a rate of 40 kg / hectare.

[0166] Fourth, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintains the same conventional management method.

[0167] After the grass seed sowing experiment in the Ulagai experimental area, the seed survival rate was statistically 94%.

[0168] Example 8

[0169] A grassland ecological restoration method comprises the following steps:

[0170] Step 1: Use warp 1 and weft 2 to make a repair net with a network structure. Warp 1 and weft 2 are arranged in a crisscross pattern, and the repair net is laid on the degraded grassland. Among them, the width of the degradable mulch film is 5 cm, the inner diameter of the sprinkler pipe is 2 cm, and the grid size of the repair net is set to 100 cm × 100 cm. A soil and water conservation net 3 is laid under the weft 2, and the bulbs are sown on the soil and water conservation net 3. The grid size of the soil and water conservation net 3 is 0.5 cm × 0.5 cm, which is smaller than the grid size of the repair net and also smaller than the particle size of the bulbs.

[0171] Step 2: Make bulbs

[0172] The grass seeds and auxiliary materials were mixed in a mass ratio of 1:4 (based on dry weight).

[0173] The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.5. After the raw materials of the auxiliary material are mixed, water is added until the moisture content of the auxiliary material is 50%, and then the auxiliary material is evenly mixed with grass seeds and pressed into balls in a spherical mold.

[0174] The bulbs used were spherical balls with a diameter of 1 cm.

[0175] Third, sowing

[0176] Sow the bulbs in the soil at a rate of 40 kg / hectare.

[0177] Fourth, conventional management: operations such as irrigation and fertilization, each embodiment and control experiment maintains the same conventional management method.

[0178] After the grass seed sowing experiment in the Ulagai experimental area, the seed survival rate was statistically 96%.

[0179] The above-mentioned Examples 6-8 are the results of field tests in the Ulagai test area. The germination rate and survival rate of the seeds are both at least higher than 90%, which is helpful for restoring grassland ecology and has excellent application prospects.

[0180] It should be noted that the component connection relationships not specifically mentioned in the present invention are assumed to adopt the existing technology. Since they do not involve the invention point and are widely used in the existing technology, the structural connection relationships are not described in detail.

[0181] It should be noted that when the present invention involves a numerical range, it should be understood that the two endpoints of each numerical range and any value between the two endpoints can be selected. Since the steps and methods used are the same as those in the embodiments, in order to avoid redundancy, the present invention describes a preferred embodiment. Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the attached claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0182] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A grassland ecological restoration method, characterized in that: include: Making bulbs: mixing grass seeds with auxiliary materials, wherein the auxiliary materials are a mixture of starch, corn cob powder, and methyl dihydrojasmonate in a mass ratio of 1:100:0.1-0.5, and the moisture content of the auxiliary materials is 40-50%, and the auxiliary materials and grass seeds are evenly mixed to make bulbs; Planting: Plant the bulbs in the soil.

2. The grassland ecological restoration method according to claim 1, characterized in that: The auxiliary material is starch, corncob powder and methyl dihydrojasmonate mixed in a mass ratio of 1:100:0.

1.

3. The grassland ecological restoration method according to claim 2, characterized in that: Calculated by dry weight, the mass ratio of grass seeds to auxiliary materials is 1:3-4.

4. The grassland ecological restoration method according to claim 3, characterized in that: The bulb sowing rate is 25-40kg / hectare.

5. The grassland ecological restoration method according to claim 1, characterized in that: The structure of the bulb is spherical, ellipsoidal or cylindrical.

6. The grassland ecological restoration method according to claim 3, characterized in that: A restoration net with a network structure is made of warp lines (1) and weft lines (2), the warp lines (1) and weft lines (2) are arranged in a crisscross pattern, and the restoration net is laid on the degraded grassland; then, bulbs are sown.

7. The grassland ecological restoration method according to claim 6, characterized in that: The warp (1) and the weft (2) are both made of degradable materials; Alternatively, the warp (1) is made of a degradable material, and the weft (2) is made of a sprinkler pipe.

8. The grassland ecological restoration method according to claim 7, characterized in that: A soil and water conservation net (3) is laid below the latitude (2), and the bulbs are sown on the soil and water conservation net (3), wherein the mesh size of the soil and water conservation net (3) is smaller than the mesh size of the repair net.

9. The grassland ecological restoration method according to claim 1, characterized in that: The method is applicable to one or more of flat-spiked wheatgrass, alfalfa, tall fescue, bermudagrass, sand reed, sheep grass, Artemisia frigida, Astragalus obliquus, Imperata cylindrica, Elytium wilfordii, Medicago truncatula, acid-resistant grass, awnless bromegrass, cyperus rotundus, Poa rigida, and Leymus japonicus.

10. The grassland ecological restoration method according to claim 9, characterized in that: The method is used for promoting the germination and growth of the grass seeds.

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