A method to promote the growth of early spring grassland plants

Abstract

The application discloses a method for promoting early spring grassland plant growth in the field of grassland plants, which comprises the following steps: step one, soil ploughing: deep ploughing and leveling the soil in the improved area before the growth of the early spring grassland plants, and removing sundries; step two, planting grass seeds: selecting appropriate time and air temperature to plant the grass seeds in the improved area, and setting an isolation mechanism to divide the improved area into a seeding area and a weed area; step three, soil fertility fertilization: according to the growth of the grassland plants and the soil fertility, a fertilization mechanism is used to fertilize the grass seeds in the seeding area, and the fertilization mechanism is located in the isolation mechanism; and step four, irrigation and moisture preservation: according to the soil humidity and the water requirement of the grassland plants, an irrigation mechanism is used to irrigate the grass seeds in the seeding area. The soil is divided into the seeding area and the weed area by the isolation mechanism, the seeding area is fertilized and the weed area is removed, and the grassland plants gradually grow in a large area.

Description

Technical Field

[0001] This invention belongs to the field of grassland plants, specifically a method for promoting the growth of grassland plants in early spring. Background Technology

[0002] Grasslands are not only a barrier to natural resources and ecological security, but also an important component of natural ecosystems. Grassland ecosystems are of great value to economic development and ecological balance. Besides promoting livestock development, grasslands also have other ecological functions, such as environmental improvement, windbreak and sand fixation, soil and water conservation, climate regulation, and water conservation. Grassland ecosystems are also of significant value in global carbon cycling and climate regulation. Plant community structure, plant phenology, and grassland productivity are highly sensitive to climate change, and the response of grassland ecosystems to climate change has a guiding role in regional agricultural economies. Grassland degradation can alter plant community structure, causing changes in plant community composition and functional diversity, seriously affecting the stability of grassland ecosystems and increasing the risk of desertification or land degradation to surrounding areas. After winter, a layer of dead grass often accumulates on grasslands, which not only affects tillering and regrowth but can also become a breeding ground for pests and diseases. Therefore, management measures should be implemented in early spring for damaged areas to promote the growth of early spring grassland plants.

[0003] Existing methods for promoting early spring grassland plant growth mostly involve manual weeding and fertilization. These techniques require significant manpower and time, are relatively inefficient, and struggle to completely eradicate weed roots, leading to easy regrowth. Furthermore, manual fertilization suffers from inconsistent application, potentially resulting in over-fertilization in some areas and under-fertilization in others, negatively impacting overall plant growth. While drones or other machinery have been used for spraying pesticides or fertilizers, these methods, though more efficient, have revealed several problems in practice. For instance, drone or mechanical fertilization often involves large-scale spraying, potentially providing nutrients to weeds and actually promoting their growth. While pesticide weeding is more efficient, it can damage grass seed growth and even harm other organisms, disrupting the ecological balance. Therefore, it is necessary to develop a method for precise fertilization and weed control to promote early spring grassland plant growth. Summary of the Invention

[0004] To address the problem that large-scale fertilizer application can actually provide nutrients to weeds and promote their growth, the present invention aims to provide a method for promoting the growth of early spring grassland plants. This method involves dividing the soil into a sowing area and a weeding area by setting up an isolation mechanism, and then fertilizing the sowing area and removing the weeds in the weeding area, thereby allowing grassland plants to gradually grow over a large area.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A method for promoting the growth of early spring grassland plants, comprising the following steps:

[0006] Step 1, Soil Tillage: Before the early spring grassland plants grow, the soil in the improvement area is deeply tilled and leveled, and debris is removed;

[0007] Step 2, Planting grass seeds: Select an appropriate time and temperature to plant grass seeds in the improved area, and set up isolation mechanisms to divide the improved area into a sowing area and a weed area;

[0008] Step 3, Soil fertility improvement: After planting grass seeds, depending on the growth of grassland plants and soil fertility, when the organic matter content is below 5%, the sowing area needs to be fertilized. Fertilization is carried out using a fertilization device located in an isolation facility. The fertilization method involves mixing fertilizers in a fixed ratio, diluting them with water, and then transporting the diluted fertilizer to the sowing area for fertilization.

[0009] Step 4, Irrigation and Moisture Retention: Based on soil moisture and the water requirements of grassland plants, irrigation is required in the sowing area when soil moisture is below 30%. Irrigation is carried out using an irrigation system that shares a channel with the fertilization system. Irrigation is carried out in small amounts and multiple times.

[0010] Step 5, weed removal: When the grass seeds grow in the sowing area, the weeds in the weed area will grow along with the grassland plants. According to the growth of the weeds in the weed area, when the weeds grow, weeding equipment is used to remove the weeds growing in the weed area. The weeding method is to mix pesticides in a fixed ratio, dilute them with water, and then deliver the diluted pesticides to the weed area for weeding.

[0011] Step Six, Natural Growth: After weed removal, when the pesticide concentration is below 0.5%, the grassland plants in the sowing area gradually grow into the weedy area and grow over a large area.

[0012] Furthermore, in step two, the appropriate time is during a season when the average daily temperature reaches 15°C or higher.

[0013] Furthermore, in step two, the isolation mechanism includes several isolation panels located on both sides of the grass seed. These panels are pre-buried in the soil using a pre-embedding method. The isolation panels are U-shaped, with several openings on both sides.

[0014] Furthermore, in step three, the fertilization mechanism includes a drip irrigation tape and a valve. The drip irrigation tape is located inside the isolation plate on the side closer to the grass seeds. The drip irrigation tape has a connection hole that communicates with the opening of the isolation plate, and the drip irrigation tape is connected to the valve.

[0015] Furthermore, in step four, the irrigation mechanism includes a water collection tank and a water pump. The water collection tank is connected to the water pump, which is connected to a pump valve. The pump valve is connected to a controller, and the output end of the water pump is connected to the input end of the drip irrigation tape.

[0016] Furthermore, in step five, the weeding mechanism includes a pesticide drip irrigation tape and a pesticide valve. The pesticide drip irrigation tape is located inside the isolation plate on the side away from the grass seeds. The pesticide drip irrigation tape has a drain hole that communicates with the opening of the isolation plate. The pesticide drip irrigation tape is connected to the pesticide valve.

[0017] Furthermore, in step three, the fertilizer ratio is nitrogen:phosphorus:potassium = 3:1:2, and the fertilizer is diluted with water at a ratio of 1:2000.

[0018] Furthermore, in step five, the pesticide ratio of the weeding unit is glyphosate: glufosinate: dithiourea = 4:1:1, and the pesticide mixture is diluted with water at a ratio of 1:2500.

[0019] Furthermore, both the drip irrigation tape and the pesticide drip irrigation tape have filters connected to their input ends.

[0020] Furthermore, in step four, the method of small-volume, frequent irrigation involves irrigating a second time when the soil moisture has penetrated to 10%-15% after the first irrigation, and then irrigating a third time when the soil moisture has penetrated to 20%-30% after the second irrigation. This cycle of irrigation is repeated to maintain the moisture content of the sowing area above 40%.

[0021] The basic scheme has the following beneficial effects: 1. Setting up isolation mechanisms effectively isolates weeds, which can significantly reduce nutrient competition between weeds and turfgrass plants. Weeds typically consume large amounts of soil nutrients, preventing turfgrass plants from obtaining sufficient nutrition to support their growth. By isolating weeds, turfgrass plants in the sowing area can make fuller use of soil nutrients, reducing the risk of pests and diseases. This helps reduce problems such as stunted growth and leaf damage caused by pests and diseases, thereby promoting healthy growth. 2. Weeds typically have well-developed root systems that easily become entangled with the roots of turfgrass plants, absorbing and consuming their nutrients. Isolating weeds reduces this entanglement, preventing it from affecting the growth of turfgrass plants in the sowing area.

[0022] 2. A separating board separates the weeding area from the sowing area. Fertilizer is applied to the sowing area via drip irrigation tape through corresponding openings in the separating board. This allows for precise control of the drip irrigation location and fertilizer ratio, ensuring that the fertilizer provides targeted nutrients only to the sowing area. Precise fertilization meets the nutrient needs of the grassland plant roots, promoting healthy root development. Healthy roots can absorb more water and nutrients, providing sufficient energy for plant growth. It also balances soil nutrient content, improves soil structure, and enhances the soil's water and fertilizer retention capacity. By rationally allocating nitrogen, phosphorus, and potassium nutrients according to the specific needs of the grassland plants and the soil fertility, fertilizer waste and overuse can be avoided. This not only reduces fertilizer input costs but also lowers environmental pollution, ensuring plants receive sufficient nutrient supply, thus promoting rapid growth and making them stronger. It also helps enhance the grassland plants' resistance to pests, diseases, drought, cold, and other adverse conditions, improving plant survival rates and growth rates.

[0023] 3. While grass seeds grow in the sowing area, weeds in the weeding area will grow alongside the grassland plants. Based on the weed growth cycle, when the weeds reach a certain height, pesticides are delivered into the weeding area through the corresponding holes in the pesticide drip irrigation tape and the isolation plate. This precise control of pesticide delivery location and proportion effectively removes the weeds. Weeds consume a large amount of water, leading to reduced soil moisture and affecting the growth of grassland plants in the sowing area. Effective weed removal reduces ineffective water evaporation, improves water use efficiency, and provides a more sufficient water supply for grassland plants. The vigorous growth of weeds blocks sunlight, affecting the photosynthesis of grassland plants. Removing sun-blocking weeds allows grassland plants to receive sufficient sunlight, improving photosynthetic efficiency and promoting their growth. Furthermore, weeds are often hosts and vectors of pests and diseases. Precise pesticide delivery to remove weeds reduces the risk of pests and diseases occurring and spreading in the grassland, minimizing growth stunts and leaf damage caused by pests and diseases. It also helps optimize the grassland plant population structure. After weeds are removed, grassland plants can better exert their growth potential, form a healthier and more stable population structure, and improve the overall quality and stability of the grassland.

[0024] 4. Collect rainwater and store it in a collection tank. When the water level in the tank reaches a certain point, turn on the water pump to irrigate the grassland plants. Early spring is when grassland plants begin their vigorous growth period, and their water requirements are particularly high. Rainwater irrigation can provide sufficient water for grassland plants, ensuring their normal growth and development. It can increase soil moisture, providing a humid growing environment for grassland plants. Moist soil is conducive to the growth of plant roots and the absorption of nutrients, thereby promoting vigorous plant growth. The water pump delivers water with a certain impact force on the soil, loosening the soil layer, thereby increasing the soil oxygen content and permeability. Good soil permeability helps the grassland plant roots breathe and grow, thus promoting their overall growth.

[0025] 5. The irrigation and fertilization systems share a single drip irrigation channel. This reduces the cost of pre-buried pipes, decreases labor input, and simplifies the operation process, eliminating the need for separate irrigation and fertilization systems. Furthermore, it allows fertilizer nutrients to be flushed out during irrigation and delivered to the sowing area, preventing nutrient loss and waste. This further ensures that fertilizer nutrients are fully absorbed and utilized by the grass seeds, thereby improving grass growth. This approach improves the efficiency of water and fertilizer management while reducing fertilizer costs.

[0026] 6. After weeds are removed, the pesticide concentration gradually decreases through water rinsing and over time. As the weeds wither in the soil, their remains decompose, releasing organic matter and nutrients such as nitrogen, phosphorus, and potassium. These nutrients can be absorbed and utilized by surrounding grassland plants. The reduced competition between weeds and grassland plants after weeds wither helps grassland plants gain more growing space and nutrients, allowing them to grow and reproduce better and naturally expand into the weedy areas. The decomposition of weed remains also helps improve soil structure and texture. It increases soil organic matter content, improves water retention and aeration, and provides a better growing environment for grassland plants. Attached Figure Description

[0027] Figure 1 This is a flowchart illustrating a method for promoting the growth of early spring grassland plants according to an embodiment of the present invention.

[0028] Figure 2 This is a top sectional view of the improved area in the method for promoting early spring grassland plant growth according to an embodiment of the present invention.

[0029] Figure 3 This is a cross-sectional view of the improved region in the method for promoting early spring grassland plant growth according to an embodiment of the present invention. Detailed Implementation

[0030] The following detailed description illustrates the specific implementation method:

[0031] The reference numerals in the accompanying drawings include: 1. Sowing area; 2. Weeding area; 3. Isolation board; 4. Opening; 5. Drip irrigation tape; 6. Water collection tank; 7. Water pump; 8. Pesticide drip irrigation tape.

[0032] The basic implementation examples are as follows: Figure 1 - Appendix Figure 3 As shown: A method for promoting the growth of early spring grassland plants, comprising the following steps:

[0033] Step 1, Soil Tillage: Before the early spring grassland plants grow, the soil in the improvement area is deeply tilled and leveled, and debris is removed;

[0034] Step 2, Planting grass seeds: Choose a season when the average daily temperature reaches 15℃ or above to plant grass seeds in the improvement area, and set up an isolation mechanism to divide the improvement area into a sowing area 1 and a weed area 2. The isolation mechanism includes several isolation boards 3, which are located on both sides of the grass seeds and are pre-buried in the soil. The isolation boards 3 are U-shaped and have several openings 4 on both sides.

[0035] Step 3, Soil fertility improvement: After planting grass seeds, based on the growth of the grassland plants and soil fertility, when the organic matter content is below 5%, fertilization is required in the sowing area 1. Fertilization is carried out using a fertilization mechanism located inside the isolation mechanism. The fertilization mechanism includes a drip irrigation tape 5 and a valve. The input end of the drip irrigation tape 5 is connected to a filter. The drip irrigation tape 5 is located inside the isolation plate 3 near the grass seeds. The drip irrigation tape 5 has a connection hole that connects to the opening 4 of the isolation plate 3. The drip irrigation tape 5 is connected to the valve. The fertilizer ratio is nitrogen:phosphorus:potassium = 3:1:2. The fertilizer is mixed with water and diluted at a ratio of 1:2000. The diluted fertilizer is then transported to the sowing area for fertilization.

[0036] Step 4, Irrigation and Moisture Retention: Based on soil moisture and the water requirements of the grassland plants, irrigation is required in the sowing area when the soil moisture is below 30%. The irrigation mechanism, which includes a water collection tank 6 and a water pump 7, is used to irrigate the grass seeds in sowing area 1. The water collection tank 6 is connected to the water pump 7, which is connected to a pump valve. The pump valve signal is connected to a controller. The output end of the water pump 7 is connected to the input end of the drip irrigation tape 5. The irrigation mechanism and the fertilization mechanism share a channel. The irrigation method is to use a small amount of water and multiple irrigations. After the first irrigation, when the soil moisture has penetrated to 10%-15%, the second irrigation is carried out. After the second irrigation, when the soil moisture has penetrated to 20%-30%, the third irrigation is carried out. This cycle of irrigation is repeated to keep the moisture content of the sowing area above 40%.

[0037] Step 5, Weed Removal: While grass seeds grow in the sowing area, weeds in the weeding area will grow along with the grassland plants. Based on the weed growth in weeding area 2, when the weeds grow, a weeding mechanism is used to remove the weeds growing in weeding area 2. The weeding mechanism includes a pesticide drip irrigation tape 8 and a pesticide valve. The input end of the pesticide drip irrigation tape 8 is connected to a filter. The pesticide drip irrigation tape 8 is located inside the isolation plate 3 on the side away from the grass seeds. The pesticide drip irrigation tape 8 has a drain hole connected to the opening 4 of the isolation plate 3. The pesticide drip irrigation tape 8 is connected to the pesticide valve. The pesticide ratio is glyphosate: glufosinate: dithiourea = 4:1:1. The pesticide is mixed with water and diluted at a ratio of 1:2500. The diluted pesticide is then delivered to the weeding area for weed removal.

[0038] Step Six, Natural Growth: After weed removal, when the pesticide concentration is below 0.5%, the grassland plants in sowing area 1 gradually grow into the large-scale weed area 2.

[0039] The specific implementation process is as follows: Based on the early spring grassland plant growth, after fencing off and prohibiting grazing in the improved area, control measures are implemented within the improved area. First, rotary tillers or other specialized machinery are used to deeply till and level the soil in the improved area, making the soil loose and eliminating uneven surfaces to ensure even distribution of water and nutrients, and removing debris from the soil layer. During seasons when the average daily temperature reaches above 15℃, grass seeds are transplanted or planted in the improved area. After planting, isolation boards 3 are pre-buried on both sides of the grass seeds, dividing the improved area into a sowing area 1 and a weed area 2, for subsequent targeted control measures.

[0040] Based on the growth of the grassland plants and soil fertility, the fertilizer ratio is adjusted to a nitrogen:phosphorus:potassium ratio of 3:1:2, diluted 2000 times with water, and the drip irrigation tape 5 is connected. The valve is opened to ensure precise drip irrigation into the sowing area 1, guaranteeing full contact between the fertilizer and the grass seeds to provide sufficient nutrients for plant growth. When the water collection tank 6 has collected enough water and irrigation is needed in the sowing area 1, the pump valve is opened. Since the water pump 7 is connected to the drip irrigation tape 5, the grass seeds in the sowing area 1 can be fully irrigated through the drip irrigation tape 5, resulting in more vigorous grassland plant growth.

[0041] When the weeds in weed area 2 grow relatively lushly, the pesticide ratio is adjusted to a mixture of glyphosate: glufosinate: dithiourea = 4:1:1, and then diluted with 2500 times the amount of water. The mixture is then connected to the pesticide drip irrigation belt 8 to deliver the pesticide to weed area 2 and ensure full contact with the weeds. After the weeds are effectively removed and withered in the soil, the pesticide concentration gradually decreases through water rinsing. At this time, the grassland plants in sowing area 1 gradually spread to weed area 2 and grow over a large area. In this way, a lush grassland ecosystem will be formed in the entire improved area.

[0042] Experiments and Results

[0043] 1. Materials and Methods

[0044] 1.1 Experimental Materials

[0045] Buffalo grass was transplanted manually with a row spacing of 30cm and a plant spacing of 30cm, resulting in a transplanting density of 90,000 plants / hm². 2 Transplanting depth is 3-5cm, with manual covering of soil. After transplanting, spray water with a sprinkler system until the soil is completely moist, and manage according to national grassland management requirements. Apply herbicide the day after transplanting. Before transplanting, investigate weed species. Randomly select 20 3m×3m quadrats in the experimental area and surrounding areas, and use the Shape & Color APP to identify weed species, marking, recording, and counting them. The weed species included goosegrass, foxtail grass, cogongrass, purslane, cocklebur, crabgrass, and thrush, among others.

[0046] 1.3 Experimental Design

[0047] A randomized block design was used, with 1m × 1m plots and 1m intervals between plots. 66.6% glyphosate aqueous solution, 16.7% glufosinate aqueous solution, and 16.7% dithiourea were used as herbicides. Commercially available herbicides were used as solutes. Glyphosate concentrations of 0.5%, 1.0%, and 1.5% (labeled G0.5, G1.0, and G1.5), glufosinate concentrations of 1.0%, 1.5%, and 2.0% (labeled GA1.0, GA1.5, and GA2.0), and dithiourea concentrations of 1.0%, 1.5%, and 2.0% (labeled GR1.0, GR1.5, and GR2.0) were prepared and sprayed using different sprayers. The control group was sprayed with an equal volume of water. The treatment was repeated three times. No pruning, fertilization, or other maintenance was performed during the treatment period.

[0048] 1.4 Prevention and control efficacy survey

[0049] The onset time was determined by observing every 2 hours after application. The time from application to the appearance of symptoms was considered the effective time. The effectiveness rate was determined by surveying 200 weeds in each plot using a five-point sampling method at 15 days and 30 days after application. The appearance of discoloration, wilting, rotting, deformity, and death was considered effective. The symptoms and their proportions were recorded, and the effectiveness rate was calculated.

[0050] Effectiveness = (Number of effective plants / Number of plants surveyed) × 100%

[0051] 2. Results Analysis

[0052] 2.1 Onset time: The type of weeder significantly affected the onset time (P < 0.05). The onset time of GA and GR was significantly shorter than that of G (see Table 1). Higher concentrations resulted in shorter onset times (P < 0.05). GA 2.0 took effect in 37 hours, while G 0.5 required 159 hours. Both pesticide type and concentration had highly significant effects on the onset time (P < 0.05) (see Table 2).

[0053] 2.2 Differences in symptom presentation 15 days after application: 15 days after application, G, GA, and GR caused discoloration and wilting in weeds, but no wilting, rotting, or deformity was observed. The type of herbicide significantly affected the symptom presentation of weeds 15 days after application (P < 0.05), as shown in Table 1. Herbicide concentration also significantly affected the symptom presentation 15 days after application (P < 0.05). With G0.5, only 100% of leaves showed chlorosis, while G1.0 caused 31.7% of leaves to turn yellow, and G1.5 caused 7.1% of leaves to die. With increasing GA concentration, the rates of purple discoloration and wilting increased, while the rates of chlorosis and yellowing decreased. The type of herbicide significantly affected the effectiveness 15 days after application; higher concentrations resulted in higher effectiveness.

[0054] Analysis of variance showed that the type of pesticide had a greater impact on disease symptoms 15 days after application than the concentration (P < 0.05), as shown in Table 2. The differences among pesticides were: chlorosis > yellowing > effective rate > onset time > wilt > purple discoloration; the differences among concentrations were: chlorosis > effective rate > wilt > yellowing > onset time > purple discoloration.

[0055]

[0056] Note: Different uppercase letters in the same column indicate extremely significant differences (P < 0.05), and different lowercase letters in the same column indicate significant differences (P < 0.05). The same applies below.

[0057] 2.3 Differences in symptoms 30 days after application: All three pesticides caused swollen and hollow new shoots, yellowing of new leaves, and death of older leaves 30 days after application. GA and GR caused a significantly higher rate of swollen and hollow new shoots than G, but their efficacy was significantly lower than G (P < 0.05), as shown in Table 1. The concentration of all three pesticides had a significant effect on symptoms 30 days after application (P < 0.05), with higher concentrations resulting in higher rates of older leaf death and new leaf yellowing. GA2.0 caused the highest rate of swollen and hollow new shoots. G1.5 showed little difference in its effect on the rate of swollen and hollow new shoots compared to GA1.0 and GA1.5, while G0.5 and G1.0 showed no significant difference. The efficacy of the experimental concentration G1.5 was 100%, while the efficacy of GA and GR increased with increasing concentration.

[0058]

[0059] Note: Different uppercase letters in the same column indicate extremely significant differences (P < 0.05), and different lowercase letters in the same column indicate significant differences (P < 0.05). The same applies below.

[0060] Analysis of variance after pesticide application showed that the rate of hollow seedling enlargement in weeds at 30 days post-application was significantly affected by pesticide type and concentration, with greater differences among concentrations than among pesticides (P < 0.05), as shown in Table 2. The rate of yellowing and mortality of new leaves was significantly affected by concentration, with smaller differences among pesticides. The effectiveness rate at 30 days post-application was mainly influenced by pesticide type. The effect of pesticide type on weed symptoms at 30 days post-application was: effectiveness rate > hollow seedling enlargement rate > yellowing rate of new leaves > mortality rate of older leaves; the effect of concentration was: yellowing rate of new leaves > mortality rate of older leaves > effectiveness rate > hollow seedling enlargement rate.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A method of promoting early spring growth of grassland vegetation, characterised in that: The method comprises the following steps: Step one, soil ploughing: before the grass grows in early spring, the soil in the improved area is ploughed and leveled, and the sundries are removed; Step two, planting grass seeds: select appropriate time and temperature to plant grass seeds in the improved area, and set up isolation mechanism to divide the improved area into seeding area and weed area; Wherein, the isolation mechanism comprises a plurality of isolation plates, the isolation plates are located on both sides of the grass seeds, and are embedded in the soil by embedding method, the isolation plates are in "U" shape, and a plurality of openings are formed on both sides of the isolation plates; Step three, soil fertility improvement: after planting grass seeds, according to the growth of grass and soil fertility, when the organic matter content is less than 5%, the seeding area needs to be fertilized, the fertilization mechanism is used for fertilization, the fertilization mechanism is located in the isolation mechanism, the fertilization method is to mix the fertilizer with a fixed proportion and dilute it with water, and then the diluted fertilizer is conveyed to the seeding area for fertilization; Wherein, the fertilization mechanism comprises a drip irrigation belt and a valve, the drip irrigation belt is located in the isolation plate close to the grass seeds, the drip irrigation belt is provided with a connecting hole communicated with the opening of the isolation plate, and the drip irrigation belt is communicated with the valve; Step four, irrigation and moisture retention: according to the soil moisture and the water requirement of the grass, when the soil moisture is less than 30%, the seeding area needs to be irrigated, the irrigation mechanism is used for irrigation, the irrigation mechanism and the fertilization mechanism share a channel, and the irrigation method is to irrigate in small amount and multiple times; Step five, weed removal: when the grass seeds grow in the seeding area, the weeds in the weed area will grow together with the grass, according to the growth of the weeds in the weed area, when the weeds grow up, the weed removal mechanism is used to remove the weeds growing in the weed area, and the weed removal method is to mix the pesticide with a fixed proportion and dilute it with water, and then the diluted pesticide is conveyed to the weed area for weed removal; Wherein, the weed removal mechanism comprises a pesticide drip irrigation belt and a pesticide valve, the pesticide drip irrigation belt is located in the isolation plate away from the grass seeds, the pesticide drip irrigation belt is provided with a leakage hole communicated with the opening of the isolation plate, and the pesticide drip irrigation belt is communicated with the pesticide valve; Step six, natural growth: after the weed removal is completed, when the pesticide concentration is less than 0.5%, the grass in the seeding area grows gradually to grow in the weed area.

2. A method of promoting early spring growth of grassland vegetation according to claim 1, characterized in that: In step two, the appropriate time is the season when the daily average temperature is above 15℃.

3. A method of promoting early spring growth of grassland vegetation according to claim 2, characterised in that: In step four, the irrigation mechanism comprises a water collecting tank and a water pump, the water collecting tank is communicated with the water pump, the water pump is communicated with a pump valve, the pump valve is signal connected with a controller, and the output end of the water pump is communicated with the input end of the drip irrigation belt.

4. A method of promoting early spring growth of grassland vegetation according to claim 3, characterised in that: In step three, the fertilizer proportion of fertilization is nitrogen: phosphorus: potassium = 3:1:2, and the fertilizer mixing and water dilution ratio is 1:2000.

5. A method of promoting early spring growth of grassland vegetation according to claim 4, characterised in that: In step five, the pesticide proportion of the weed removal mechanism is glyphosate: glufosinate: disulfiram = 4:1:1, and the pesticide mixing and water dilution ratio is 1:2500.

6. A method of promoting early spring growth of grassland vegetation according to claim 5, characterised in that: The input end of the drip irrigation belt and the pesticide drip irrigation belt is communicated with a filter.

7. A method of promoting early spring growth of grassland vegetation according to claim 6, characterised in that: In step four, the irrigation method in small amount and multiple times is that after the first irrigation, when the soil moisture penetration is 10%-15%, the second irrigation is carried out, after the second irrigation, when the soil moisture penetration is 20%-30%, the third irrigation is carried out, and the irrigation is circulated to keep the water content in the seeding area above 40%.

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