Method for breeding rumex hamiltonii on dry and warm valley slope

Abstract

The invention relates to the field of ecological restoration, and provides a method for breeding rumex japonicus on a dry and warm valley slope. The method comprises the following steps: (1) leveling a field; (2) covering the slope with soil; (3) improving the soil in situ; (4) excavating a reverse horizontal step; (5) constructing a flexible ecological water and fertilizer bin; (6) dibble seeding of hairy morinda herb seeds; (7) covering with a non-woven fabric; and (8) maintenance management. The method is suitable for a soil slope, a soil-rock mixed slope and a debris flow slope with the slope ratio not larger than 1: 0.5. Compared with a traditional method, the method has the advantages that the construction process is simple, construction is convenient, and the construction speed is high; the matrix structure is high in stability, the matrix can be uniformly attached to the side slope, and the water and soil loss resistance is very high; disturbance to the side slope is small, the bearing load of the side slope is small, and stability of the side slope is better facilitated; the plant survival rate is high and the recovery effect is good; the applicability is wide; the construction cost is low; the method can be widely applied to slope greening, road greening and mine restoration in the Tibet dry and warm valley areas.

Description

Technical Field

[0001] The invention relates to the field of ecological restoration, in particular to a method for breeding Rumex truncatum on the slopes of dry and warm river valleys. Background Art

[0002] The deep inland areas of the high-altitude dry-warm river valleys have distinct mountain monsoon climate characteristics. Due to their high latitude and altitude, the region's humidity is low. As altitude decreases, temperatures rise, precipitation decreases, and evaporation increases. This dry-warm river valley region is characterized by a dry climate and relatively low temperatures. Vegetation in these high-altitude dry-warm river valleys is characterized by a star-shaped distribution, creating a semi-desert or desert-like landscape. The dominant plant species are mostly short, dense shrubs, with fewer trees and herbs.

[0003] Rumex halbertii is a deciduous shrub with strong resistance to adversity. It grows on sandy barren slopes and sunny hillsides in Yunnan, Sichuan and southeastern Tibet. Currently, there are few reports on the propagation methods of Rumex halbertii on the slopes of dry and warm river valleys.

[0004] Due to the large temperature difference between morning and evening in the dry and warm river valley area, the seeds of Rumex euphorbiae are sensitive to temperature when germinating. If no measures are taken, the seed germination rate is very low, the growth potential is weak, the degree of lignification is slow, and it cannot survive the winter normally and cannot adapt to the high-altitude dry and warm river valley climate, resulting in the failure of ecological restoration. Summary of the Invention

[0005] The invention aims to provide a method for breeding Rumex truncatum on the slope of dry and warm river valley.

[0006] In order to achieve the object of the present invention, the present invention provides a method for breeding Rumex truncatum on the slopes of a dry and warm river valley, comprising the following steps: (1) Leveling the site; (2) Covering the slope with soil; (3) In situ soil improvement; (4) Excavate several reverse horizontal steps along the slope; (5) Digging nests on the slope between the opposite horizontal steps to build flexible ecological water and fertilizer storage; (6) Sowing and broadcasting Rumex oleifera seeds; (7) Covered with non-woven fabric; (8) Maintenance and management.

[0007] Furthermore, the soil used for covering the slope surface in step (2) has a particle size of no greater than 3 cm, a salt content of no greater than 0.1%, and an electrical conductivity of no greater than 1000 us / cm.

[0008] In step (2), if the slope ratio of the slope surface is 1:1 to 1:0.5, the thickness of the covering soil shall not exceed 10 cm; if the slope ratio of the slope surface is not greater than 1:1, the thickness of the covering soil shall not exceed 20 cm.

[0009] Furthermore, step (3) includes: adding soil improvement material to the soil surface, with the mass of the soil improvement material added being 500 g to 1000 g per square meter; The soil improvement materials include carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer and compound microbial agent; wherein the weight percentages of the carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer and compound microbial agent are 80%, 15%, 4.5% and 0.5% respectively, and the total weight percentage is 100%.

[0010] The carbon-based high-activity microbial organic fertilizer has an organic matter content of not less than 40%, a humic acid content of not less than 10%, and a number of beneficial microorganisms of not less than 100 million / g; preferably, the carbon-based high-activity microbial organic fertilizer is purchased from Hebei Motu Biotechnology Co., Ltd. The total nutrient content of the compound fertilizer is not less than 45%, wherein nitrogen, phosphorus and potassium are mixed in equal weight ratios; Preferably, the composite microbial agent is purchased from Shandong Fulong Biotechnology Co., Ltd.

[0011] Furthermore, in step (4), the reverse horizontal step is excavated by cutting inward and outward along the slope contour line from top to bottom, and a number of reverse horizontal steps are excavated, with the spacing between two adjacent reverse horizontal steps being 1 to 1.5 m, the table width being 20 to 40 cm, and the table slope being 3% to 5% ( Figure 1 ).

[0012] Furthermore, in step (5), a nest is excavated on the slope between the reverse horizontal steps to construct a flexible ecological water and fertilizer warehouse. The length, width and depth of the flexible ecological water and fertilizer warehouse are not less than 20 cm × 20 cm × 15 cm. On average, 1 to 3 flexible ecological water and fertilizer warehouses are set per square meter and arranged in a random and natural manner on the slope between the reverse horizontal steps ( Figure 1 ).

[0013] The flexible ecological water storage tank of the present invention is a kind of hole nest randomly excavated between horizontal steps. Topsoil, carbon-based high-activity microbial organic fertilizer (carbon-based high-activity microbial fertilizer), compound fertilizer, seeds and other materials are added to the hole nest. It has the function of retaining water and fertilizer, and can intercept rainwater to the greatest extent, which is suitable for plant germination and growth.

[0014] Furthermore, a mixture comprising topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder, and a granular structure promoter was added to the flexible ecological water and fertilizer bin; the weight of the mixture added to each flexible ecological water and fertilizer bin was 500 g; Among them, calculated by mass percentage, the proportions of topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder and granule structure promoter are: 30-45%, 45-60%, 5-10%, 0.001-0.005% and 0.003-0.008% respectively.

[0015] Preferably, the topsoil is from local sources; Preferably, the carbon-based high-activity microbial organic fertilizer is purchased from Shijiazhuang Wofuwo Fertilizer Co., Ltd.; Preferably, the vinyl acetate-ethylene copolymer dispersible latex powder is purchased from Shandong Mackenmu Chemical Co., Ltd.; The aggregate structure promoter is polyacrylamide with a molecular weight of more than 8 million to 10 million Da; Among them, the effective ingredient content of vinyl acetate-ethylene copolymer dispersible latex powder is more than 60%, which can form a very thin physical layer structure on the surface of the soil, reduce the porosity of the soil, and can tightly lock the evaporation of water, but does not affect the exchange of air between the soil and the outside world. It can maintain the moisture content of the soil for a long time, so that the seeds of Rumex euphorbiae can quickly swell and germinate, and improve the growth potential and coverage of the plants; in addition, the dry and warm river valley area has strong evaporation and little rainfall, and the vinyl acetate-ethylene copolymer dispersible latex powder can further reduce the maintenance frequency and save maintenance costs.

[0016] The aggregate structure promoter is anionic polyacrylamide, which can cause the topsoil to aggregate, forming a honeycomb-like soil structure, improving the soil's water holding capacity and heat retention. Dry and warm river valleys are located at high altitudes, with large temperature differences between morning and evening, making them unsuitable for plant growth. By adding the aggregate structure promoter, the soil temperature is further raised, promoting seed germination and growth.

[0017] The mixed use of vinyl acetate-ethylene copolymer dispersible latex powder and granular structure promoter can maximize the effective water holding capacity of the soil and prevent water from being lost from the soil due to strong evaporation. It can achieve one precipitation or one maintenance watering, and no watering is required for 8 to 10 days, forming an unexpected effect. It is suitable for the growth of Rumex serrata seeds in dry and warm river valley areas.

[0018] Furthermore, in step (6), 6 to 8 Rumex oleifera seeds are sown in holes in the flexible ecological water and fertilizer bin; and the seeds are spread on the slope surface, with the amount of Rumex oleifera seeds spread per square meter being 5 to 10 g.

[0019] Furthermore, seeds are spread on the slope surface. First, organic fertilizer and Rumex halospermum seeds are mixed in a volume ratio of 5:1, and then spread evenly on the slope surface, maintaining a covering thickness of 0.3 cm to 0.5 cm.

[0020] The organic fertilizer is naturally fermented cattle and sheep manure from local areas. For example, the manure is adjusted to a moisture content of 50-60%, piled for 25-40 days, kept at a temperature of 50-60°C, and turned at least three times a day. When the irritating temperature disappears, the color turns dark brown or black brown, and there is no noticeable lumps or stickiness, it is considered mature and can be used as organic fertilizer.

[0021] Preferably, Rumex rubra seeds are treated at a low temperature of 0-4°C for 40-60 days (soaking in warm water (60°C until naturally cooled) for approximately 12 hours the day before sowing) before being sown in piles or broadcast. Soaking the cold-treated Rumex rubra seeds in warm water the day before sowing will shorten their germination time without affecting their germination rate. Without soaking in warm water, seeds germinate in approximately 15 days, while germination occurs in approximately 7 days after warm water treatment.

[0022] By means of the above technical solution, the present invention has at least the following advantages and beneficial effects: The present invention provides a method for propagating Rumex oleifera on the slopes of dry and warm river valleys, the method comprising: (1) leveling the site; (2) covering the slope with soil; (3) in-situ soil improvement; (4) excavating a reverse horizontal step; (5) constructing a flexible ecological water and fertilizer storage; (6) spot-sowing Rumex oleifera seeds; (7) covering with non-woven fabric; and (8) maintenance and management. The method is suitable for soil slopes, soil-rock mixed slopes, and debris flow slopes with a slope ratio of no more than 1:0.5. Compared with traditional methods, the present invention has the advantages of simple construction process, convenient construction, and fast construction speed; strong matrix structure stability, enabling the matrix to be evenly attached to the slope, and very strong ability to resist soil and water loss; less disturbance to the slope, small slope bearing load, and more conducive to slope stability; high plant survival rate and good restoration effect; wide applicability; low project cost; and can be widely used in slope greening, road greening, and mine restoration in the dry and warm river valleys of Tibet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The reverse horizontal step and flexible ecological water and fertilizer storage structure of the present invention are shown. 1 - original slope line; 2 - reverse horizontal step structure; 3 - flexible ecological water and fertilizer storage structure. DETAILED DESCRIPTION

[0024] The present invention provides a method for breeding Rumex truncatum on the slope of a dry and warm river valley, comprising the following steps: (1) Leveling the site; (2) Covering the slope with soil; (3) In situ soil improvement; (4) Excavation of the reverse horizontal step; (5) Constructing a flexible ecological water and fertilizer storage; (6) Sowing and broadcasting Rumex oleifera seeds; (7) Covered with non-woven fabric; (8) Maintenance and management.

[0025] The slope surface is covered with soil with a particle size of no more than 3 cm, a salt content of no more than 0.1%, and an electrical conductivity of no more than 1000 us / cm.

[0026] The slope surface is covered with soil, and the slope ratio of the slope surface is 1:1 to 1:0.5, and the thickness of the soil covering is not more than 10 cm; the slope ratio of the slope surface is not more than 1:1, and the thickness of the soil covering is not more than 20 cm.

[0027] The in-situ soil improvement method involves adding soil improvement materials such as carbon-based highly active microbial organic fertilizer, rice husks, compound fertilizer, and composite microbial inoculants. The proportions of these materials (total weight per 100%) are: 80%, 15%, 4.5%, and 0.5%. The mass of soil improvement materials added per square meter is 500g to 1000g.

[0028] The organic matter content of carbon-based high-activity microbial organic fertilizer shall not be less than 40%, the humic acid content shall not be less than 10%, and the number of beneficial microorganisms shall not be less than 10 million / g.

[0029] Preferably, carbon-based, highly active microbial organic fertilizers can be purchased from Hebei Motu Biotechnology Co., Ltd.; compound microbial inoculants can be purchased from Shandong Fulong Biotechnology Co., Ltd. The compound fertilizers should have a total nutrient content of no less than 45%, with nitrogen, phosphorus, and potassium mixed in equal weight proportions. Compound fertilizers and rice hulls can be purchased directly in the project's implementation area.

[0030] Compound fertilizer, carbon-based high-activity microbial organic fertilizer, and rice husk can provide short-term, medium-term, and long-term nutrients for Rumex euphorbiae and increase the air permeability of the soil, which is suitable for the germination and growth of Rumex euphorbiae and achieves the goal of rapid greening of the slope.

[0031] The reverse horizontal step excavation process is to cut the outer pad from top to bottom along the slope contour line, with an excavation spacing of 1 to 1.5m, a table width of 20 to 40cm, and a table slope of 3% to 5% ( Figure 1 ).

[0032] The flexible ecological water and fertilizer warehouse is constructed in such a way that the length, width and depth of the flexible ecological water and fertilizer warehouse are not less than 20cm×20cm×15cm. On average, 1 to 3 flexible ecological water and fertilizer warehouses are made per square meter and are arranged randomly and naturally on the slope. Figure 1 ).

[0033] The reverse horizontal step method uses less soil, causes less disturbance to the slope surface, and is easy to deploy and promote on slopes. Compared to other methods, it is simple, easy to implement, and saves labor and materials. Combined with the point-based rainwater control measures of the flexible ecological water and fertilizer storage, a point-based and surface-based approach changes the microtopography of the slope, increasing the amount of rainwater stored on the slope, thereby intercepting runoff, depositing soil, and increasing rainfall infiltration. This ensures that the slope will not be washed away under conditions of increased rainfall intensity and duration.

[0034] The flexible ecological water and fertilizer storage bin is constructed by adding topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder, granular structure promoter and other materials into the flexible ecological water and fertilizer storage bin. The weight of the mixture added to each flexible ecological water and fertilizer storage bin is preferably 500g, wherein, calculated based on 100% by mass, the proportion of vinyl acetate-ethylene copolymer dispersible latex powder is 0.001-0.005%, and the proportion of granular structure promoter is 0.003-0.008%.

[0035] By adding carbon-based highly active microbial organic fertilizers and compound fertilizers, it is possible to provide medium- and long-term nutrient supply for plant growth, increase the content of microorganisms in the soil, improve the soil's water retention, fertilizer retention, air permeability and heat insulation properties, increase the types, quantity and activity of beneficial microbial flora in the soil, improve the rhizosphere growth environment of plants, and integrate water, heat and fertilizer into a slow-release, high-efficiency soil.

[0036] The granular structure promoter filled in the flexible ecological water and fertilizer bin is anionic polyacrylamide with a molecular weight of 8 million to 10 million Da. It can react with the colloidal molecules in the soil to form a stable structure, so that the soil colloidal molecules can float stably on the slope surface, and have strong anti-erosion and stability. Polyacrylamide can absorb water up to 300 times its own weight, has excellent water storage and retention capacity, and greatly saves maintenance costs. Rumex seeds are planted in the bin to increase the survival rate and growth rate of the plants. The slope is divided to reduce slope water runoff. After the plants grow taller, it serves as a reinforcement layer to protect the slope and reduce soil erosion.

[0037] The hole sowing and broadcasting of Rumex rubrum seeds are as follows: 6 to 8 seeds are hole sown in a flexible ecological water and fertilizer bin; and the seeds are broadcasted on a slope, with the amount of Rumex rubrum seeds broadcasted per square meter being 5 to 10 g.

[0038] The method of hole sowing and broadcasting the Rumex rubrum seeds is to broadcast the seeds on a slope by first mixing the organic fertilizer with the Rumex rubrum seeds in a volume ratio of 5:1 and broadcasting the mixture evenly on the slope, maintaining a covering thickness of 0.3 cm to 0.5 cm.

[0039] Rumex seeds need to be treated at a low temperature of 0-4°C for more than 40-60 days. Soak the Rumex seeds in warm water (60°C to natural cooling) for about 12 hours the day before sowing.

[0040] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art, and the raw materials used are all commercially available products.

[0041] Reagents and materials used in the following examples: The aggregate structure promoter, polyacrylamide, is a commercial reagent purchased from Henan Saike Environmental Protection Technology Co., Ltd. It is anionic and has a molecular weight of 8 million Da.

[0042] The compound fertilizer was a commercial material with a total nutrient content of not less than 45%, with nitrogen, phosphorus, and potassium each accounting for 15% by weight. It was purchased from Anhui Lingwo Biotechnology Co., Ltd.

[0043] Vinyl acetate-ethylene copolymer dispersible latex powder is a commercial material purchased from Shandong Mackenmu Chemical Co., Ltd. The active ingredient content is above 60%.

[0044] Carbon-based high-activity microbial organic fertilizer is a commercial material purchased from Shijiazhuang Wofuwo Fertilizer Co., Ltd.

[0045] Topsoil can be sourced locally.

[0046] The organic fertilizer is naturally fermented cattle and sheep manure from local areas. The preparation method for the organic fertilizer is as follows: the manure is adjusted to a moisture content of approximately 55%; the manure is piled for 35 days, the temperature is controlled at approximately 55°C, and the pile is turned at least three times a day. When the irritating temperature disappears, the color turns dark brown or black brown, and there is no noticeable lumps or stickiness, the manure is fully decomposed and can be used as organic fertilizer.

[0047] The composite microbial agent was purchased from Shandong Fulong Biotechnology Co., Ltd.

[0048] Carbon-based high-activity microbial organic fertilizer was purchased from Hebei Motu Biotechnology Co., Ltd. The carbon-based high-activity microbial organic fertilizer had an organic matter content of not less than 40%, a humic acid content of not less than 10%, and a number of beneficial microorganisms of not less than 10 million / g.

[0049] The dry-warm valley slope involved in the following embodiments is located in Rumei Town, Mangkam County, Qamdo City, Tibet, at 98.35E, 29.63N.

[0050] Example 1 This embodiment provides a method for propagating Rumex oleifera on the slopes of a dry and warm river valley, comprising: (1) leveling the site; (2) covering the slope with soil; (3) improving the soil in situ; (4) excavating a reverse horizontal step; (5) constructing a flexible ecological water and fertilizer storage; (6) spot sowing (hole sowing and broadcast sowing) of Rumex oleifera seeds; (7) covering with non-woven fabric; and (8) maintenance and management.

[0051] Furthermore, the slope ratio of the slope is 1:0.5, and the experimental area is 100 m2.

[0052] Furthermore, the thickness of the slope covering soil is 10 cm, the particle size of the soil is not greater than 3 cm, the salt content is not greater than 0.1%, and the electrical conductivity is not greater than 1000 us / cm.

[0053] Furthermore, the in-situ soil improvement process involves the addition of soil improvement materials such as carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer, and composite microbial inoculant. The proportions of these soil improvement materials (total weight per 100%) are: 80%, 15%, 4.5%, and 0.5%. The mass of soil improvement materials added per square meter is 1000g, while the mass of carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer, and composite microbial inoculant per square meter is 800g, 150g, 45g, and 5g, respectively.

[0054] Furthermore, the reverse horizontal step process is to cut inside and pad outside from top to bottom along the slope contour line, and excavate several reverse horizontal steps. The distance between two adjacent reverse horizontal steps is 1.5m, the table width is 40cm, and the table slope is 5%.

[0055] Furthermore, holes are excavated on the slope between the reverse horizontal steps to construct flexible ecological water and fertilizer bins. The length, width and depth of the flexible ecological water and fertilizer bins are not less than 20cm×20cm×15cm. An average of 3 flexible ecological water and fertilizer bins are made per square meter, and they are arranged in a random and natural manner on the slope between the reverse horizontal steps. Topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder, granular structure promoter and other materials are added to the flexible ecological water and fertilizer bins. The weight of the mixture added to each flexible ecological water and fertilizer bin should be 500g, of which the proportion of vinyl acetate-ethylene copolymer dispersible latex powder is 0.0055% and the proportion of granular structure promoter is 0.0085% calculated based on 100% by mass.

[0056] Furthermore, pit sowing and broadcasting of Rumex rubrum seeds were performed. For seed broadcasting on a slope, organic fertilizer and Rumex rubrum seeds were first mixed in a volume ratio of 5:1 and evenly broadcast on the slope, maintaining a coverage thickness of 0.5 cm. Six to eight seeds were pit sown in a flexible ecological water and fertilizer bin; for seed broadcasting on a slope, 10 g of Rumex rubrum seeds were broadcast per square meter.

[0057] Furthermore, before hole sowing and broadcasting the Rumex seeds, the Rumex seeds need to be treated at a low temperature of 0 to 4°C for more than 60 days, and the Rumex seeds should be soaked in warm water (60°C to natural cooling) for about 12 hours the day before sowing.

[0058] Example 2 This embodiment provides a method for propagating Rumex oleifera on the slopes of a dry and warm river valley, comprising: (1) leveling the site; (2) covering the slope with soil; (3) improving the soil in situ; (4) excavating a reverse horizontal step; (5) constructing a flexible ecological water and fertilizer storage; (6) spot sowing (hole sowing and broadcast sowing) of Rumex oleifera seeds; (7) covering with non-woven fabric; and (8) maintenance and management.

[0059] Furthermore, the slope ratio of the slope is 1:1, and the experimental area is 100 m2.

[0060] Furthermore, the thickness of the slope covering soil is 20 cm, the particle size of the soil is not greater than 3 cm, the salt content is not greater than 0.1%, and the electrical conductivity is not greater than 1000 us / cm.

[0061] Furthermore, the in-situ soil improvement process involves the addition of soil improvement materials such as carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer, and composite microbial inoculant. The proportions of these soil improvement materials (total weight per 100%) are: 80%, 15%, 4.5%, and 0.5%. The mass of the added soil improvement materials per square meter is 500g, while the mass of the carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer, and composite microbial inoculant per square meter is 400g, 75g, 22.5g, and 2.5g, respectively.

[0062] Furthermore, the reverse horizontal step process is to cut inside and pad outside from top to bottom along the slope contour line, with an excavation spacing of 1m, a table width of 20cm, and a table slope of 3%.

[0063] Furthermore, a flexible ecological water and fertilizer bin is constructed, the length, width and depth of which are not less than 20cm×20cm×15cm, with an average of one flexible ecological water and fertilizer bin per square meter, and they are arranged randomly and naturally on the slope; topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder, granular structure promoter and other materials are added to the flexible ecological water and fertilizer bin, and the weight of the mixture added to each flexible ecological water and fertilizer bin should be 500g, of which, calculated based on 100% by mass, the proportion of vinyl acetate-ethylene copolymer dispersible latex powder is 0.001%, and the proportion of granular structure promoter is 0.003%.

[0064] Furthermore, pit sowing and broadcasting of Rumex rubrum seeds were performed. For seed broadcasting on a slope, organic fertilizer and Rumex rubrum seeds were first mixed in a volume ratio of 5:1 and evenly broadcast on the slope, maintaining a coverage thickness of 0.3 cm. Six to eight seeds were pit sown in a flexible ecological water and fertilizer bin; for seed broadcasting on a slope, 10 g of Rumex rubrum seeds were broadcast per square meter.

[0065] Furthermore, before sowing and broadcasting the Rumex seeds, the Rumex seeds need to be treated at a low temperature of 0 to 4°C for more than 40 days, and the Rumex seeds should be soaked in warm water (60°C to natural cooling) for about 12 hours the day before sowing.

[0066] Example 3 This embodiment provides a method for propagating Rumex oleifera on the slopes of a dry and warm river valley, comprising: (1) leveling the site; (2) covering the slope with soil; (3) improving the soil in situ; (4) excavating a reverse horizontal step; (5) constructing a flexible ecological water and fertilizer storage; (6) spot sowing (hole sowing and broadcast sowing) of Rumex oleifera seeds; (7) covering with non-woven fabric; and (8) maintenance and management.

[0067] Furthermore, the slope ratio of the slope is 1:0.75, and the experimental area is 100 m2.

[0068] Furthermore, the thickness of the slope covering soil is 15 cm, the particle size of the soil is not greater than 3 cm, the salt content is not greater than 0.1%, and the electrical conductivity is not greater than 1000 us / cm.

[0069] Furthermore, the in-situ soil improvement process involves the addition of soil improvement materials, including carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer, and a composite microbial inoculant. The proportions of these soil improvement materials (total weight per 100%) are: 80%, 15%, 4.5%, and 0.5%. The mass of the added soil improvement materials per square meter is 750g, while the mass of the carbon-based high-activity microbial organic fertilizer, rice husks, compound fertilizer, and composite microbial inoculant per square meter is 600g, 112.5g, 33.75g, and 3.75g, respectively.

[0070] Furthermore, the reverse horizontal step process is to cut inside and pad outside from top to bottom along the slope contour line, with an excavation spacing of 1.25m, a table width of 30cm, and a table slope of 4%.

[0071] Furthermore, a flexible ecological water and fertilizer bin is constructed, the length, width and depth of which are not less than 20cm×20cm×15cm, with an average of two flexible ecological water and fertilizer bins per square meter, which are arranged randomly and naturally on the slope. Topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder, granular structure promoter and other materials are added to the flexible ecological water and fertilizer bin. The weight of the mixture added to each flexible ecological water and fertilizer bin should be 500g, of which, calculated based on 100% by mass, the proportion of vinyl acetate-ethylene copolymer dispersible latex powder is 0.003%, and the proportion of granular structure promoter is 0.0055%.

[0072] Furthermore, pit sowing and broadcasting of Rumex rubrum seeds were performed. For seed broadcasting on a slope, organic fertilizer and Rumex rubrum seeds were first mixed in a volume ratio of 5:1 and evenly broadcast on the slope, maintaining a coverage thickness of 0.3 cm. Six to eight seeds were pit sown in a flexible ecological water and fertilizer bin; for seed broadcasting on a slope, 10 g of Rumex rubrum seeds were broadcast per square meter.

[0073] Furthermore, before sowing and broadcasting the Rumex seeds, the Rumex seeds need to be treated at a low temperature of 0 to 4°C for more than 40 days, and the Rumex seeds should be soaked in warm water (60°C to natural cooling) for about 12 hours the day before sowing.

[0074] Comparative Example 1 This comparative example provides a method for growing Rumex truncatum on the slopes of a dry, warm river valley. The composition and steps are identical to those of Example 1, differing only in that the vinyl acetate-ethylene copolymer dispersible latex powder is replaced with an equal mass of a water-retaining agent. The water-retaining agent is a high-molecular-weight water-absorbing resin, polyvinyl alcohol, purchased from Qingdao Meike Biotechnology Co., Ltd. The molecular weight of the polyvinyl alcohol is no less than 35,000 Da.

[0075] Comparative Example 2 This comparative example provides a method for propagating Rumex truncatum on the slopes of a dry, warm river valley. The composition and steps are the same as those in Example 1, differing only in that the aggregate structure promoter is replaced with an equal-weight binder, sodium polyacrylate. The binder was purchased from Renqiu Fenghui Chemical Co., Ltd. The molecular weight of the sodium polyacrylate is not less than 1000 Da.

[0076] Comparative Example 3 This comparative example provides a method for propagating Rumex serrata on the slopes of a dry, warm river valley. The composition and steps are the same as those in Example 1, except that the Rumex serrata seeds are not treated at a low temperature of 0 to 4°C. The day before sowing, the seeds are soaked in warm water (60°C to cool naturally) for about 12 hours.

[0077] This experiment was conducted on the growth of plants of Examples 1 to 3 and Comparative Examples 1 to 3, and the growth height (cm) and plant coverage (100%) of Rumex euphorbiae at 60 and 120 days were statistically analyzed. The results are shown in Table 1.

[0078] Table 1

[0079] From the above results, it can be seen that treatment at a low temperature of 0-4℃ for more than 40 days can quickly break the dormancy of Rumex oleifera seeds, quickly shorten the germination time, and effectively improve the growth potential of the plant, promoting the rapid germination of Rumex oleifera seeds.

[0080] The effective ingredient content of vinyl acetate-ethylene copolymer dispersible latex powder is more than 60%, which can form a very thin physical layer structure on the surface of the soil, reduce the porosity of the soil, and can tightly lock the evaporation of water without affecting the exchange of air between the soil and the outside world. It can maintain the moisture content of the soil for a long time, so that the seeds of Rumex euphorbiae can quickly swell and germinate, and improve the growth potential and coverage of the plants. In addition, the dry and warm valley areas have strong evaporation and little rainfall. Vinyl acetate-ethylene copolymer dispersible latex powder can further reduce the maintenance frequency and save maintenance costs. The aggregate structure promoter is anionic polyacrylamide, which can cause the topsoil to aggregate, forming a honeycomb-like soil structure, improving the soil's water holding capacity and heat retention. Dry and warm river valleys are located at high altitudes, with large temperature differences between morning and evening, making them unsuitable for plant growth. By adding the aggregate structure promoter, the soil temperature is further raised, promoting seed germination and growth.

[0081] The mixed use of vinyl acetate-ethylene copolymer dispersible latex powder and granular structure promoter can maximize the effective water holding capacity of the soil and prevent water from being lost from the soil due to strong evaporation. It can achieve one precipitation or one maintenance watering, and no watering is required for 8 to 10 days, forming an unexpected effect. It is suitable for the growth of Rumex serrata seeds in dry and warm river valley areas.

[0082] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A method for breeding Rumex truncatum on the slopes of dry and warm river valleys, characterized in that: The following steps are involved: (1) Leveling the site; (2) Covering the slope with soil; (3) In situ soil improvement; (4) Excavate several reverse horizontal steps along the slope; (5) Digging nests on the slope between the opposite horizontal steps to build flexible ecological water and fertilizer storage; (6) Sowing and broadcasting Rumex oleifera seeds; (7) Covered with non-woven fabric; (8) Maintenance and management.

2. The method according to claim 1, characterized in that In step (2), the soil used for covering the slope surface has a particle size of no more than 3 cm, a salt content of no more than 0.1%, and an electrical conductivity of no more than 1000 us / cm.

3. The method according to claim 1 or 2, characterized in that In step (2), if the slope ratio of the slope surface is 1:1 to 1:0.5, the thickness of the covering soil shall not exceed 10 cm; if the slope ratio of the slope surface is not greater than 1:1, the thickness of the covering soil shall not exceed 20 cm.

4. The method according to claim 1, wherein Step (3) includes: adding soil improvement material to the soil surface, with the mass of the soil improvement material added being 500 g to 1000 g per square meter; The soil improvement material comprises carbon-based high-activity microbial organic fertilizer, rice husk, compound fertilizer and compound microbial agent; wherein the weight percentages of carbon-based high-activity microbial organic fertilizer, rice husk, compound fertilizer and compound microbial agent are 80%, 15%, 4.5% and 0.5% respectively, and the total weight percentage is 100%; The carbon-based high-activity microbial organic fertilizer has an organic matter content of not less than 40%, a humic acid content of not less than 10%, and a number of beneficial microorganisms of not less than 100 million / g; preferably, the carbon-based high-activity microbial organic fertilizer is purchased from Hebei Motu Biotechnology Co., Ltd. The total nutrient content of the compound fertilizer is not less than 45%, wherein nitrogen, phosphorus and potassium are mixed in equal weight ratios; Preferably, the composite microbial agent is purchased from Shandong Fulong Biotechnology Co., Ltd.

5. The method according to claim 1, wherein Step (4) excavation of reverse horizontal steps is to cut inward and outward along the slope contour from top to bottom, excavating several reverse horizontal steps, with the spacing between two adjacent reverse horizontal steps being 1 to 1.5 m, the table width being 20 to 40 cm, and the table slope being 3% to 5%.

6. The method according to claim 1, wherein Step (5) digging holes on the slope between the reverse horizontal steps to construct flexible ecological water and fertilizer storage bins. The length, width and depth of the flexible ecological water and fertilizer storage bins are not less than 20 cm × 20 cm × 15 cm. On average, 1 to 3 flexible ecological water and fertilizer storage bins are set per square meter and are arranged randomly and naturally on the slope between the reverse horizontal steps.

7. The method according to claim 1 or 6, characterized in that A mixture comprising topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder, and a granular structure promoter is added to a flexible ecological water and fertilizer bin; the weight of the mixture added to each flexible ecological water and fertilizer bin is 500 g; Among them, according to the percentage by mass, the proportions of topsoil, carbon-based high-activity microbial organic fertilizer, compound fertilizer, vinyl acetate-ethylene copolymer dispersible latex powder and aggregate structure promoter are: 30-45%, 45-60%, 5-10%, 0.001-0.005% and 0.003-0.008% respectively; Preferably, the topsoil is from local sources; Preferably, the carbon-based high-activity microbial organic fertilizer is purchased from Shijiazhuang Wofuwo Fertilizer Co., Ltd.; Preferably, the vinyl acetate-ethylene copolymer dispersible latex powder is purchased from Shandong Mackenmu Chemical Co., Ltd.; The granular structure promoter is polyacrylamide with a molecular weight of 8 million to 10 million Da.

8. The method according to claim 1, characterized in that In step (6), 6 to 8 Rumex oleifera seeds are sown in holes in the flexible ecological water and fertilizer bin; and the seeds are spread on the slope surface, with the amount of Rumex oleifera seeds spread per square meter being 5 to 10 g.

9. The method according to claim 1 or 8, characterized in that Sow seeds on the slope. First, mix organic fertilizer and Rumex oleifera seeds in a volume ratio of 5:1, and spread evenly on the slope, keeping the coverage thickness at 0.3cm to 0.5cm. The organic fertilizer is local naturally fermented cattle and sheep manure.

10. The method according to any one of claims 1 to 9, characterized in that Treat the seeds of Rumex oleifera at a low temperature of 0-4℃ for 40-60 days, and then sow them in holes or broadcast them.

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