A method for transplanting seedlings on a high altitude river valley surface mountain

Abstract

An innovative seedling transplanting method for high-altitude river valleys and mountains, involving the field of ecological restoration and vegetation restoration technology, significantly improves the survival rate and growth quality of seedlings through key steps such as comprehensive soil improvement, selection of seedlings, safe transportation, scientific planting and meticulous management and maintenance. The method first improves the soil by combining deep groove fish scale pits with conical grooves to enhance the ability to retain water and fertilizer. The seedlings are strictly selected to ensure that the root system is well developed, and they are carefully protected during transportation and storage. During planting, the present invention uses stem cutting and deep planting or slurry dipping and deep burial technology to reduce water loss, and promotes root growth through innovative cotton ball and water collection tank design. After afforestation, the tending and management are strengthened, including reasonable fertilization, watering and pruning, to enhance the stress resistance of the seedlings, promote healthy and rapid growth, and ultimately achieve effective ecological restoration and vegetation reconstruction of high-altitude river valleys and mountains.

Description

Technical Field

[0001] The invention relates to the technical field of ecological restoration and vegetation restoration, and in particular to a method for transplanting seedlings on a mountain surface in a river valley at a high altitude. Background Art

[0002] In Tibet, my country, the unique geographical location and natural environment of various regions have brought many challenges to artificial afforestation projects. In particular, those afforestation areas, due to geographical restrictions, generally face unfavorable factors such as poor soil and insufficient light, which seriously hinder the further expansion and effectiveness of afforestation projects.

[0003] Taking a hydropower station under construction in the middle reaches of the Yarlung Zangbo River in Tibet as an example, researchers have carefully classified and proposed corresponding ecological restoration strategies and plant configuration optimization plans for the diverse construction disturbance surfaces around it, such as rock slopes and soil-rock slopes. Through in-depth vegetation and species research, a group of plant species with strong adaptability and significant ecological effects have been successfully selected, providing strong support for the ecological restoration of each disturbance area.

[0004] In addition, researchers conducted a comparative experiment on slope and flat land vegetation restoration at the starting section of the Linla Expressway in Linzhi, further revealing the significant advantages of eco-bags in vegetation restoration. The study showed that under reasonable water and nitrogen management, the growth and biomass of vegetation restored by eco-bags on slopes were better than those on flat land. This finding provides new ideas and evidence for slope ecological management in plateau areas.

[0005] When researchers visited 15 counties in Shandong, they noticed that trees on shady slopes grew better than on sunny slopes, mainly due to the better water conditions and less human interference on shady slopes. Given the need for afforestation on sunny slopes of river valleys in Tibet, how to achieve effective afforestation under such conditions has become an urgent problem to be solved. In the face of the current situation where my country's regional ecological restoration methods are still imperfect and it is difficult to cope with large-scale ecosystem degradation, it is particularly important to use scientific spatial planning methods for regional ecological restoration.

[0006] Afforestation in Tibet's high-altitude areas faces multiple difficulties, including insufficient awareness, insufficient land preparation, single seedling variety, lack of technology, etc. These problems directly affect the quality of afforestation. Specifically, factors such as planning and design that are out of touch with reality, poor land conditions, substandard seedling quality, and immature technical solutions all constitute constraints. Therefore, it is key to build a systematic and scientific drought-resistant afforestation technology system. This system needs to comprehensively consider tree species selection, afforestation model, seedling quality, seasonal adaptability, land preparation technology, water management, wind protection measures, precision fertilization, application of new technologies and new materials, and post-nurturing and management, etc., in order to overcome the various unfavorable conditions in the plateau gully area and improve the survival rate of seedlings and afforestation results.

[0007] Taking the mountains on both sides of the Yani River Valley in Bayi District, Nyingchi City as an example, the soil in its ecological afforestation and restoration area is mainly sandy mountain brown soil, but the soil is poor, there are many stone impurities, and the organic matter and nutrient content are low. In addition, the geological structure is complex and there is no vegetation to fix the soil, which is very easy to cause natural disasters such as soil erosion and rock fall. In response to these technical problems, targeted measures need to be taken, such as soil improvement, efficient irrigation, stable seedling fixation methods, precise fertilization, and the application of environmentally friendly materials, to ensure the smooth implementation of afforestation projects and the continuous improvement of the ecological environment. Summary of the invention

[0008] The purpose of the present invention is to provide a method for transplanting seedlings on high-altitude river valley surfaces to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A method for transplanting seedlings on a high altitude river valley surface mountain, characterized in that it comprises the following steps:

[0011] (1) Soil improvement and land preparation

[0012] Deep groove fish scale pit land preparation is carried out on the sunny slope. Conical grooves are excavated on the slope and between the fish scale pits. The stones produced by the excavation of the fish scale pits and the conical grooves are placed on the upper side of the slope between the fish scale pits and the conical grooves, and the remaining soil is left in the fish scale pits;

[0013] (2) Seedling selection and treatment

[0014] Seedling selection: Choose good quality seedlings with well-developed root systems, and avoid using damaged or weak seedlings;

[0015] (3) Transportation and storage

[0016] Transportation: The seedlings should not be damaged during transportation;

[0017] Storage: Seedlings should be transplanted before planting, and should be transplanted in a well-drained, wind-sheltered and sun-sheltered area.

[0018] (4) Planting and maintenance

[0019] Planting time: Choose spring or late autumn or early winter for afforestation according to local climate and soil conditions;

[0020] Planting technology: Use deep planting by cutting the trunk or deep burying by dipping in slurry to reduce the water loss of seedlings; the hole area should be appropriately larger than the root width to keep the roots moist, use soft thick cotton thread to wrap around the junction of the trunk and root system of the seedlings, and wrap part of the upper root system inside the thick cotton thread, the thick cotton thread forms a cotton ball, and then the roots of the seedlings are dipped in slurry together with the cotton ball. The seedlings after dipping in slurry are planted in the nutrient soil in the fish scale pit and compacted. The cotton balls on adjacent seedlings are connected to each other by connecting thick cotton threads, and the connecting thick cotton threads are buried inside the slope, and then the water collection trough is pressed into the conical trough, and the two sides of the water collection trough extend to the sides of the trunk of the seedlings, and then watering is carried out;

[0021] Management and maintenance measures: Strengthen nurturing and maintenance after afforestation, including reasonable fertilization, watering, and pruning, to improve the seedlings' resistance to stress and promote healthy growth.

[0022] According to a preferred technical solution, the water collecting trough is a triangular prism structure, water collecting ports are respectively arranged on the upper parts of both sides of the water collecting trough, transparent water leakage holes are arranged on both sides of the bottom of the water collecting trough, and the connecting thick cotton thread passes through the inside of the water leakage hole.

[0023] According to a preferred technical solution, the material of the water collection tank is one or more of polylactic acid, polybutylene succinate and its copolymers and poly 3-hydroxyalkanoate.

[0024] The preferred technical solution is that the nutrient soil is prepared by mixing 20% ​​green manure, 15% sawdust, 10% soil water retainer, and 5% soil improver by weight with the remaining native soil and backfilling the soil into the pit; for areas covered with rocks, fresh planting soil is used instead or nutrient soil is prepared by mixing 50% sawdust, 30% wood ash, and 20% cooked soil, and the soil is left for 2 to 3 days for high-temperature fermentation before use.

[0025] According to a preferred technical solution, the slurry used for dipping includes ABT rooting powder.

[0026] According to a preferred technical solution, the depth of the fish scale pit is greater than 30 cm.

[0027] According to the preferred technical solution, the stones produced by excavating the fish scale pit and the tapered groove are placed on the upper side of the slope between the fish scale pit and the tapered groove, and the height of the stones is higher than the height of the upper side of the water collection tank.

[0028] In a preferred technical solution, the dipping slurry comprises the following components:

[0029] Base Materials:

[0030] Water: As a solvent, use local water sources to ensure that the water is pure and pollution-free; the content is about 70% to 80%;

[0031] Xanthan gum: As a natural thickener, it increases the viscosity of the slurry and helps the slurry form a protective layer at the roots of seedlings; the content is about 0.5% to 1%;

[0032] Trehalose: As a natural moisturizer, it keeps the roots of seedlings moist; the content is about 1% to 2%;

[0033] Active ingredients:

[0034] ABT rooting powder: promotes rapid rooting of seedlings; the content is about 0.1% to 0.2%;

[0035] Microbial agents: including nitrogen-fixing bacteria, phosphate-dissolving bacteria and potassium-dissolving bacteria, which help seedlings better absorb nutrients in the soil; the content is about 1% to 2%;

[0036] Plant growth regulators: such as gibberellins and auxins, used to regulate seedling growth and enhance their stress resistance; the content is about 0.2% to 0.3%;

[0037] Special additives:

[0038] Nano silicon: improves the disease resistance and mechanical strength of seedlings; the content is about 0.1% to 0.2%;

[0039] Biological enzymes: such as cellulase and pectinase, which decompose organic matter in the soil and improve soil fertility; the content is about 0.5% to 1%;

[0040] Antifreeze protein: suitable for low temperature environments in high altitude areas to prevent frostbite of seedlings; the content is about 0.1% to 0.2%.

[0041] The preferred technical solution is that the method for preparing the dipping slurry comprises the following steps:

[0042] (1) Slowly add xanthan gum into water and stir evenly until it is completely dissolved;

[0043] (2) Add trehalose, ABT rooting powder, microbial agent, plant growth regulator, nano-silicon, biological enzyme and antifreeze protein in sequence to ensure that each component is fully dissolved and mixed evenly;

[0044] (3) Adjust the pH value of the slurry to 6.0-6.5 to meet the growth requirements of seedlings.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] Soil environment optimization: Through the design of deep-grooved fish-scale pits and conical grooves, the soil thickness is significantly increased, the soil structure is improved, and the soil's ability to retain water and fertilizer is improved, creating a more suitable soil environment for seedling growth.

[0047] Improved survival rate of seedlings: Selecting high-quality and strong seedlings, and combining scientific planting techniques such as deep planting by cutting the stem or deep burying by dipping in slurry, can effectively reduce the water loss of seedlings during transplanting, and significantly improve the drought resistance of seedlings and the survival rate of afforestation.

[0048] The water collection and moisture retention function of the water collection tank: The unique design of the water collection tank can effectively collect rainwater and slowly release it to the seedlings, especially in the dry season to enhance the drought resistance of the seedlings. At the same time, the water collection tank can also purify rainwater, prevent soil erosion, and through the degradability of its material, it will eventually integrate with the soil, provide nutrients for the trees, and avoid environmental pollution.

[0049] Wind-proof and stabilizing effect: The arrangement of stones and water collection troughs not only enhances the wind resistance of seedlings, but also connects adjacent seedlings to each other through thick cotton thread, further stabilizing the seedlings, reducing the risk of being blown down by the wind and eliminating the need for reinforced brackets.

[0050] Preparation of nutrient soil: Nutrient soil is flexibly prepared according to different geological conditions, especially for areas covered with a lot of rocks. High-temperature fermented nutrient soil is used to provide sufficient nutrients for seedlings and promote their healthy growth.

[0051] Environmental protection and sustainability: The entire transplanting method focuses on environmental protection and sustainability, such as the degradable design of the water collection tank and the reasonable preparation of nutrient soil, which all reflect a friendly attitude towards the ecological environment, reduce subsequent maintenance costs, and achieve a win-win situation of ecological and economic benefits.

[0052] Reasonable use of resources: The stones, soil, etc. produced in the land preparation process are reasonably utilized, which not only reduces waste, but also improves resource utilization efficiency, reflecting the concept of resource recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the technical route of the present invention;

[0054] Figure 2 It is a schematic diagram of the structure of the present invention when it is planted;

[0055] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0056] Figure 4 It is a schematic diagram of the water collecting tank structure of the present invention;

[0057] Figure 5 It is a schematic diagram of rainwater flowing through the water collection tank of the present invention;

[0058] In the figure: 1 slope, 2 fish scale pit, 3 conical trough, 4 stones, 5 seedlings, 6 cotton balls, 7 nutrient soil, 8 connecting thick cotton thread, 9 water collection trough, 91 water collection port, 92 leakage hole. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,

[0061] A method for transplanting seedlings on a mountain in a river valley at high altitude, taking drought-resistant afforestation on a mountain in the Yani River valley in Linzhi as a specific embodiment,

[0062] The following steps are included:

[0063] (1) Soil improvement and land preparation

[0064] The overall work is carried out one rainy season in advance. Deep trough fish scale pit land preparation is carried out on the sunny slope. Conical grooves 3 are excavated on the slope 1 and between the fish scale pits 2. Stones 4 produced by excavating the fish scale pits 2 and the conical grooves 3 are placed on the upper side of the slope between the fish scale pits 2 and the conical grooves 3, and the remaining soil is retained in the fish scale pits 2. Through soil improvement and land preparation, especially the design of deep trough fish scale pits and conical grooves, not only the soil thickness is increased, but also the soil structure is improved, the soil's water and fertilizer retention capacity is improved, and a good soil environment is provided for the growth of seedlings.

[0065] (2) Selection and treatment of seedlings 5

[0066] Seedling 5 Selection: Choose good quality seedlings with well-developed root systems, and avoid using damaged or weak seedlings;

[0067] (3) Transportation and storage

[0068] Transportation: The seedlings 5 ​​should not be damaged during transportation;

[0069] Storage: Seedlings 5 ​​should be transplanted before planting, and should be transplanted in a well-drained, wind-sheltered and sun-sheltered area.

[0070] (4) Planting and maintenance

[0071] Planting time: Choose spring or late autumn or early winter for afforestation according to local climate and soil conditions;

[0072] Planting technology: Use trunk cutting and deep planting or slurry dipping and deep burial method to reduce water loss of seedlings; the hole area should be appropriately larger than the root width to keep the roots moist, use soft thick cotton thread to wrap around the junction of the trunk and the root system of the seedling 5, and wrap part of the upper root system inside the thick cotton thread, the thick cotton thread forms a cotton ball 6, and then the root system of the seedling 5 and the cotton ball 6 are dipped in slurry. The seedlings 5 ​​after dipping are planted in the nutrient soil 7 in the fish scale pit 2 and compacted. The cotton balls 6 on adjacent seedlings 5 ​​are connected to each other by connecting thick cotton thread 8. The cotton thread 8 is buried inside the slope 1, and then the water collection trough 9 is pressed into the conical groove 3, and the two sides of the water collection trough 9 extend to the sides of the trunk of the seedling 5, and then watering is carried out; the water collection trough 9 can effectively collect rainwater and slowly release it to the seedling 5, especially in the dry season. This water collection function greatly enhances the drought resistance of the seedlings and improves the afforestation survival rate; the two sides of the water collection trough 9 extend to the sides of the trunk of the seedling 5. When the water collection trough 9 is placed, the stones 4 placed in the soil improvement and land preparation can be squeezed to the upper outer part of the root of the seedling 5 The water collecting trough 9 has a certain squeezing force on the stone 4. The stone 4 is located on the upper outer side of the root of the seedling 5, which can effectively prevent the seedling 5 from being blown down by the wind and has a windproof effect. The cotton ball 6 has a certain water storage capacity. After dipping in slurry, it can supplement the root system of the seedling 5 with business substances. The cotton ball 6 will also form a layer of fiber layer during the decomposition process, which has the effect of shading and retaining water for the nutrient soil 7 at the bottom. Due to the low climate temperature at high altitudes, the cotton ball 6 also has a heat preservation effect. The water collecting trough 9 and the stone 4 have a certain water storage capacity on the cotton ball 6 has a certain shading effect, which can prevent the moisture in the cotton ball 6 from evaporating quickly. In addition, the cotton balls 6 on adjacent seedlings 5 ​​are connected to each other through the thick cotton thread 8, so that the adjacent seedlings 5 ​​are connected to each other. The roots of the seedlings 5 ​​are pulled and fixed by the thick cotton thread 8, making the seedlings 5 ​​more stable and not easily skewed by the wind. During the growth of the seedlings 5, there is no need to use a reinforced support; winding part of the upper root system inside the thick cotton thread is conducive to the cotton ball 6 to continue to provide business substances for the root system of the seedlings 5.

[0073] Management and maintenance measures: Strengthen nurturing and maintenance after afforestation, including reasonable fertilization, watering, and pruning, to improve the seedlings' resistance to stress and promote healthy growth.

[0074] The water collecting tank 9 is a triangular prism structure, and water collecting ports 91 are respectively arranged on the upper parts of both sides of the water collecting tank 9 , and transparent water leakage holes 92 are arranged on both sides of the bottom of the water collecting tank 9 , and the connecting thick cotton thread 8 passes through the inside of the water leakage hole 92 . When it rains, rainwater flows downward along the slope, and rainwater enters the water collecting trough 9 from the water collecting port 91 of the water collecting trough 9. When the water in the water collecting trough 9 is full, rainwater will flow in from the water collecting port 91 on one side of the water collecting trough 9 and flow out from the water collecting port 91 on the other side. Due to the special structure of the water collecting trough 9, the flow rate of rainwater slows down when passing through the inside of the water collecting trough 9, and the soil carried by the rainwater is more easily precipitated in the water collecting trough 9. Therefore, the water collecting trough 9 can also purify rainwater and prevent water and soil loss; after the rain, the water in the water collecting trough 9 will continue to provide water for the seedlings 5 ​​for a longer period of time afterwards through the leakage holes 92. The water in the water collecting trough 9 is conducted to the roots of the seedlings 5 ​​mainly by slowly penetrating the roots of the seedlings 5 ​​through the water absorption of the thick cotton thread 8. In this way, the water in the water collecting trough 9 will not leak out of the leakage holes 92 quickly, and the seedlings can be provided with water for a long time through the penetration effect of the thick cotton thread 8.

[0075] The material of the water collection tank 9 is one or more of polylactic acid, polybutylene succinate and its copolymers and poly-3-hydroxyalkanoate. When the water collection tank 9 is used for a long time, due to the increasing amount of soil deposited inside, its function of collecting water and purifying rainwater will gradually weaken. The water collection tank 9 uses degradable materials. As the seedlings survive and grow, there is no need to continue to replenish water. The ability of the trees themselves to prevent soil and water loss becomes stronger. Finally, the water collection tank 9 made of degradable materials will be integrated with the soil after degradation, and does not need to be recycled, and will not cause pollution. In addition, the degraded materials can also provide nutrients to the trees.

[0076] Nutrient soil 7 is made by taking 20% ​​green manure, 15% sawdust, 10% soil water retainer, and 5% soil conditioner by weight, and mix them evenly with the remaining native soil, and backfill them into the pit. For areas covered with more rocks, replace them with fresh planting soil or prepare nutrient soil with 50% sawdust, 30% wood ash, and 20% cooked soil, and leave it for 2 to 3 days for high-temperature fermentation before use.

[0077] The slurry for dipping includes ABT rooting powder.

[0078] The depth of the fish scale pit is more than 30cm.

[0079] The stones 4 produced by excavating the fish scale pit 2 and the conical groove 3 are placed on the upper side of the slope between the fish scale pit 2 and the conical groove 3, and the height of the stones 4 is higher than the height of the upper side of the water collecting tank 9. In this way, when the water collecting tank 9 is squeezed by the stones 4, a part of the stones 4 will fall on the upper sides of both ends of the water collecting tank 9, making the water collecting tank 9 more stable. In the present invention, the stones 4, soil, etc. produced during land preparation are reasonably utilized.

[0080] The dipping paste includes the following components:

[0081] Base Materials:

[0082] Water: As a solvent, use local water sources to ensure that the water is pure and pollution-free; the content is about 70% to 80%;

[0083] Xanthan gum: As a natural thickener, it increases the viscosity of the slurry and helps the slurry form a protective layer at the roots of seedlings; the content is about 0.5% to 1%;

[0084] Trehalose: As a natural moisturizer, it keeps the roots of seedlings moist; the content is about 1% to 2%;

[0085] Active ingredients:

[0086] ABT rooting powder: promotes rapid rooting of seedlings; the content is about 0.1% to 0.2%;

[0087] Microbial agents: including nitrogen-fixing bacteria, phosphate-dissolving bacteria and potassium-dissolving bacteria, which help seedlings better absorb nutrients in the soil; the content is about 1% to 2%;

[0088] Plant growth regulators: such as gibberellins and auxins, used to regulate seedling growth and enhance their stress resistance; the content is about 0.2% to 0.3%;

[0089] Special additives:

[0090] Nano silicon: improves the disease resistance and mechanical strength of seedlings; the content is about 0.1% to 0.2%;

[0091] Biological enzymes: such as cellulase and pectinase, which decompose organic matter in the soil and improve soil fertility; the content is about 0.5% to 1%;

[0092] Antifreeze protein: suitable for low temperature environments in high altitude areas to prevent frostbite of seedlings; the content is about 0.1% to 0.2%.

[0093] The preparation method of the dipping slurry comprises the following steps,

[0094] (1) Slowly add xanthan gum into water and stir evenly until it is completely dissolved;

[0095] (2) Add trehalose, ABT rooting powder, microbial agent, plant growth regulator, nano-silicon, biological enzyme and antifreeze protein in sequence to ensure that each component is fully dissolved and mixed evenly;

[0096] (3) Adjust the pH value of the slurry to 6.0-6.5 to meet the growth requirements of seedlings.

[0097] The Tibet Autonomous Region, as the main body of the Qinghai-Tibet Plateau, is vast and high in terrain. Its core area is composed of the "one river and two rivers" area, namely the middle reaches of the Yarlung Zangbo River and its important tributaries, the Lhasa River and the Nianchu River. This area is located in the river valley area in the southern part of the Qinghai-Tibet Plateau, with unique natural conditions and abundant resources. The altitude is maintained between 3,500 and 4,000 meters, enjoying the grace of the plateau temperate semi-arid climate, with distinct seasons, pleasant climate, gentle terrain, concentrated population, developed transportation network, and solid economic foundation. It can be called the prosperous center of politics, economy, science and technology, and culture in the whole region.

[0098] The Yani River Valley is jointly shaped by the Yarlung Zangbo River and its important tributary, the Niyang River. The Niyang River, affectionately called Niyangqu in Tibetan, is one of the most prominent tributaries on the north side of the Yarlung Zangbo River and ranks among the top five tributaries. It originates from Cuomulangla at the western foot of Mila Mountain, rushes from west to east, and finally merges into the embrace of the Yarlung Zangbo River in Bayi District, Nyingchi City. The mountains on both sides of the Yani River Valley are the mountains that stand tall. The ecological greening project in this area is not only aimed at greening the environment, but also strives to achieve a win-win situation of economic and ecological benefits.

[0099] The key area of ​​ecological restoration is the mountains on both sides of the Yani River Valley in Bayi District, with an altitude span from 2,908 meters to 3,363 meters. The terrain is steep, and the slopes of the bottom and the mountain area are mostly between 30° and 50°. Steep slopes and abrupt slopes are the main ones, accounting for a significant proportion of 65.66%. The soil in this area is mainly sandy mountain brown soil, but the gravel content is high, and organic matter and nutrients are relatively scarce. In some areas, the proportion of exposed rocks is as high as 60%. The geological structure is complex and changeable, belonging to the Yarlung Zangbo River composite rock basement belt, with rich rock types, mainly including diorite, quartz diorite, granodiorite, etc. of the Early Cretaceous, forming a stratum of deep-source synmoltenic granite magma evolution series.

[0100] Linzhi area, a treasure in southeastern Tibet, has complex terrain, crisscrossing gullies, and significant relative height differences, which have bred diverse terrain, climate and hydrological characteristics. The precipitation in the Yani River Valley area of ​​Bayi District is uneven, concentrated in the turn of summer and autumn, with a large temperature difference between day and night and vigorous evaporation. Soil moisture has become the key to successful afforestation. This case focuses on the barren beach steep slopes, suspected burnt areas, sparse forests to be transformed and economic forest planting areas in the area. The rocks are exposed and the soil layer is poor. It is necessary to introduce foreign soil to improve soil conditions. Although there have been attempts to plant trees, the results have been poor and the survival rate is low.

[0101] The core of the research and development of this invention is to deeply explore the impact of the following aspects on afforestation quality:

[0102] 1. Soil improvement strategy: Soil quality is crucial for afforestation in Nyingchi. In response to the problems of poor water retention in local soil, dry sunny slopes, and lack of nutrients, a soil tillage and improvement plan was proposed to optimize soil structure, improve air permeability and water holding capacity, and provide an ideal growth environment for seedlings. At the same time, a method of scientific treatment using local native soil was explored to reduce the high cost of fresh planting soil.

[0103] 2. Optimization of land preparation technology: Land preparation in advance is a key step to improve the survival rate of afforestation. On dry sunny slopes, deep trough fish scale pit land preparation, large pit land preparation and deep planting and compaction techniques are used, combined with water storage and moisture conservation measures such as adding green manure, sawdust, soil water retention agents, etc., to improve soil structure and enhance water holding capacity.

[0104] 3. Exploration of tree nutrient solution ratios: Through scientific research, the ratio of nutrients required for tree growth was determined, and a scientific and reasonable nutrient solution was formulated to promote tree root growth, enhance photosynthesis and metabolic capacity, and thus improve afforestation effects.

[0105] 4. Fine management of the seedling planting process: From seedling removal, transportation, storage to planting on the mountain, every step is carefully planned and managed. Ensure the quality of seedlings, reduce transportation damage, optimize storage conditions, use modern transportation methods such as drones to improve the efficiency of going up the mountain, and ensure the health of seedlings in all aspects.

[0106] 5. Accurately grasp the planting time: According to the climatic characteristics of the Nyingchi area, choose spring and late autumn and early winter as the best time for afforestation, prepare the land and store water in advance to ensure that the soil moisture conditions are suitable and increase the success rate of afforestation.

[0107] 6. Innovative application of planting technology: Emphasis on correct planting methods and techniques, such as deep planting by cutting the stem and deep burying by dipping slurry, etc., to reduce water loss of seedlings and improve survival rate. At the same time, promote advanced technologies such as water retaining agents and water collection irrigation to help trees grow healthily.

[0108] 7. Careful management after planting: Recognize the importance of nurturing and management, and promote the healthy growth of trees and improve the quality and benefits of afforestation through scientific fertilization, timely pruning, pest and disease control and other measures.

[0109] 8. Introduction of innovative planting technologies: such as the application of ABT rooting powder dipping slurry, which promotes root development by regulating endogenous plant hormones, thereby increasing afforestation survival rate and crop yield.

[0110] Finally, this embodiment constructs a set of systematic drought-resistant afforestation technology systems, aiming to achieve high standards of afforestation survival rate and survival rate, while promoting a win-win situation of regional economic development and ecological environment protection. Although the embodiments of the present invention have been shown and described, it is understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for transplanting seedlings on a high altitude river valley surface mountain, characterized in that: The following steps are included: (1) Soil improvement and land preparation Deep trough type fish scale pit land preparation is performed on a sunny slope (1), a conical groove (3) is excavated on the slope (1) and between the fish scale pits (2), stones (4) produced by excavating the fish scale pits (2) and the conical grooves (3) are placed on the upper side of the slope between the fish scale pits (2) and the conical grooves (3), and the remaining soil is left in the fish scale pits (2); (2) Seedlings (5) Selection and treatment (5) Selection of seedlings: Select good quality seedlings with strong root systems and avoid using damaged or weak seedlings; (3) Transportation and storage Transportation: The seedlings (5) should not be damaged during transportation; Storage: Seedlings (5) should be transplanted before planting, and should be transplanted in a well-drained, wind-sheltered and sun-sheltered area; (4) Planting and maintenance Planting time: Choose spring or late autumn or early winter for afforestation according to local climate and soil conditions; Planting technology: adopt the method of deep planting by cutting the trunk or deep burying by dipping in slurry to reduce the water loss of seedlings; the area of ​​the hole should be appropriately larger than the root width to keep the roots moist, use soft thick cotton thread to wrap around the junction of the trunk and the root system of the seedling, and wrap part of the upper root system inside the thick cotton thread, the thick cotton thread forms a cotton ball (6), and then the root system of the seedling (5) together with the cotton ball (6) are dipped in slurry, the seedlings (5) after dipping in slurry are planted in the nutrient soil (7) in the fish scale pit (2) and compacted, the cotton balls (6) on adjacent seedlings (5) are connected to each other by connecting thick cotton thread (8), and the connecting thick cotton thread (8) is buried inside the slope (1), and then the water collection trough (9) is pressed into the conical groove (3), and the two sides of the water collection trough (9) extend to the side of the trunk of the seedling (5), and then watering is carried out; Management and maintenance measures: Strengthen the cultivation and maintenance after afforestation, including reasonable fertilization, watering, and pruning, to improve the seedlings' (5) resistance to stress and promote healthy growth; The water collecting trough (9) is a triangular prism structure, and water collecting ports (91) are respectively arranged at the upper parts of both sides of the water collecting trough (9), and transparent water leakage holes (92) are arranged at both sides of the bottom of the water collecting trough (9), and the connecting thick cotton thread (8) passes through the inside of the water leakage hole (92); Stones (4) produced by excavating the fish scale pit (2) and the conical groove (3) are placed on the upper side of the slope between the fish scale pit (2) and the conical groove (3), and the height of the stone (4) is higher than the height of the upper side of the water collecting trough (9).

2. A method for transplanting seedlings in a high altitude valley according to claim 1, characterized in that: The material of the water collecting tank (9) is one or more of polylactic acid, polybutylene succinate and its copolymer and poly 3-hydroxyalkanoate.

3. A method for transplanting seedlings in a high altitude valley according to claim 1, characterized in that: The nutrient soil (7) is prepared by mixing 20% ​​green manure, 15% sawdust, 10% soil water retaining agent, and 5% soil improver with the remaining native soil in a weight ratio, and then backfilling the mixture into the pit. For areas covered with rocks, fresh planting soil is used instead, or nutrient soil is prepared by mixing 50% sawdust, 30% wood ash, and 20% cooked soil, and the soil is placed for 2 to 3 days for high temperature fermentation before use.

4. A method for transplanting seedlings in a high altitude river valley according to claim 1, characterized in that: The slurry during dipping includes ABT rooting powder.

5. The method for transplanting seedlings in a high altitude river valley according to claim 1, characterized in that: The depth of the fish scale pit (2) is more than 30 cm.

6. The method for transplanting seedlings in a high altitude river valley according to claim 1, characterized in that: The dipping paste comprises the following components: Base Materials: Water: as a solvent, the content is 70% to 80%; Xanthan gum: content is 0.5% to 1%; Trehalose: content is 1% to 2%; Active ingredients: ABT rooting powder: content is 0.1% to 0.2%; Microbial agents: including nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium-solubilizing bacteria, with a content of 1% to 2%; Plant growth regulators: including gibberellins and auxins, with a content of 0.2% to 0.3%; Special additives: Nano silicon: content is 0.1% to 0.2%; Biological enzymes: including cellulase and pectinase, with a content of 0.5% to 1%; Antifreeze protein: content is 0.1%~0.2%.

7. The method for transplanting seedlings in a high altitude valley according to claim 1, characterized in that: The method for preparing the dipping slurry comprises the following steps: (1) Slowly add xanthan gum into water and stir evenly until it is completely dissolved; (2) Add trehalose, ABT rooting powder, microbial agent, plant growth regulator, nano-silicon, biological enzyme and antifreeze protein in sequence to ensure that each component is fully dissolved and mixed evenly; (3) Adjust the pH value of the slurry to 6.0-6.5 to meet the growth requirements of seedlings.

Images