Construction method of carbon and nitrogen self-sufficient tea garden

Abstract

The invention belongs to the field of construction of green low-carbon ecological tea gardens, and particularly relates to a construction method of a carbon-nitrogen self-sufficient tea garden. The method is realized through the following steps: after a tea garden is selected, ridging is performed to form a small distance and a large distance, and drip irrigation pipes are laid on tea ridges; planting nitrogen-fixation carbon-fixation green manure in the small distance and the large distance of the tea garden; tea trees are planted on the tea ridges in a single-row planting mode, and the planted tea trees are shaped in a flat fan shape. According to the carbon and nitrogen requirements of tea production in the tea garden and the principle that the mass of green manure growth substances is not smaller than that of the tea production requirements, the area ratio of the occupied area of carbon-fixation and nitrogen-fixation green manure to the occupied area of tea trees intercropped in the tea garden is arranged, and a special machine is used for harvesting and landfill of the green manure, so that exogenous input products in the tea garden are reduced; the tea garden carbon sequestration capability is improved, the tea garden ecology is improved, and the tea quality and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of green low-carbon ecological tea garden construction, and particularly relates to a construction method of a carbon and nitrogen self-sufficient tea garden. BACKGROUND

[0002] Reducing carbon emissions is an important measure to reduce the climate crisis of mankind. Tea garden is an ecological system between typical agriculture and forestry, and the carbon storage per unit area can be as high as 193.3 tons / ha, which is much higher than that of grassland ecological system and close to the level of forest ecological system. However, the problems in tea garden management and production limit the carbon sink function of tea. Especially in the planting link such as tea garden fertilization, which accounts for 28% of the emission sources of tea industry. Reducing carbon emissions in planting can effectively promote the process of carbon neutralization of Chinese tea.

[0003] In the traditional construction process of tea garden, the nutrients of tea garden are mainly derived from the input of chemical fertilizer. Chemical nitrogen fertilizer only increases soil chemical nutrients, but aggravates microbial nutrient limitation, reduces microbial carbon utilization efficiency, and at the same time, the use of a large amount of chemical fertilizer also aggravates soil acidification. Green manure can convert more carbon into microbial carbon by increasing phosphorus metabolic enzyme activity and reducing microbial phosphorus limitation, effectively improve soil microbial carbon utilization efficiency, and promote soil carbon sequestration. By cultivating intercropping green manure plants in tea garden and burying them, the soil structure is improved, the soil maturity is promoted, the soil fertility is enhanced, the carbon storage of tea garden ecological system is improved, the carbon emission of tea garden is reduced, and the biodiversity and stability of tea garden ecological system are improved. In the prior art, there is no related record of the construction of a carbon and nitrogen self-sufficient ecological tea garden which is completely provided with carbon and nitrogen nutrients by green manure. SUMMARY

[0004] In view of the technical needs of the existing green ecological low-carbon tea garden construction, the present application provides a construction method of a carbon and nitrogen self-sufficient tea garden. According to the carbon and nitrogen demand of tea production in the tea garden, the area ratio of carbon and nitrogen fixing green manure and tea tree in the tea garden is arranged according to the principle that the green manure growth quality is not less than the demand of tea production, and special machinery is used for green manure harvesting and burying, etc. The purpose of reducing external inputs in tea garden, increasing carbon sequestration capacity of tea garden, improving tea garden ecology, improving tea quality and safety is achieved.

[0005] The technical scheme adopted by the present application to achieve the above purpose is as follows: The present application provides a construction method of a carbon and nitrogen self-sufficient tea garden, comprising the following steps: (1) Tea garden selection: selecting a suitable plot and leveling the land to a certain slope; (2) Tea garden ridging: ridging in the way of circulating arrangement according to the arrangement specification of "large distance-tea ridge-small distance-tea ridge"; (3) Tea ridge laying and laying drip irrigation pipe: laying water and fertilizer integrated drip irrigation pipe on the tea ridge, then covering film on the tea ridge, and opening planting hole on the film according to the tea tree planting position; (4) Green manure intercropping: planting nitrogen-fixing and carbon-fixing green manure in the small distance and the large distance of the tea garden; (5) Tea tree planting: adopting single row planting mode, and planting tea trees on the middle row line of the tea ridge; (6) Tea tree shaping: after tea tree planting, leaving side branches perpendicular to the direction of the tea ridge, cutting side branches parallel to the direction of the tea ridge, and shaping into flat fan type, so that the tea tree plant forms a planar fan-shaped tree shape.

[0006] Further, in step (1), the length of the land is between 20-50m, and the minimum width is not less than 5.2m; and the slope is below 30 degrees.

[0007] Further, in step (2), the ridge height of the tea ridge is 0.2m, the ridge width is 0.6m, the distance between two ridges is 1.6-2m in the large distance, and 0.8-1.2m in the small distance.

[0008] Further, in step (4), low and flat nitrogen-fixing and carbon-fixing green manure is planted in the small distance, and high and vigorous nitrogen-fixing and carbon-fixing green manure is planted in the middle of the large distance.

[0009] Further, the green manure in the large distance is harvested and filled after the green manure growing season; the green manure in the large distance is first harvested, crushed and sent to the adjacent small distance, and then ploughed and crushed to be returned to the field.

[0010] Further, the green manure in the small distance is crushed and filled in place in time after the green manure growing season; the green manure in the small distance is crushed and returned to the field after the green manure in the large distance is crushed and sent to the small distance.

[0011] Further, in step (5), the plant distance of the tea tree is 0.1-0.15m, and one plant is planted in each hole.

[0012] During the construction of the tea garden, the remaining land width after multiple cycles of the tea garden land is required to be wider than the large distance; if the width is insufficient, the last cycle is cancelled, and the large distance on both sides of the land is widened.

[0013] In the construction method provided by the application, during the green manure planting process: according to the local climate, water and soil conditions of the tea garden, suitable green manure is selected for intercropping, low and flat nitrogen-fixing and carbon-fixing green manure is intercropped in the small distance, and high and vigorous nitrogen-fixing and carbon-fixing green manure is intercropped in the middle of the large distance. In addition to the nitrogen-fixing and carbon-fixing green manure, herbaceous plants that can attract natural enemies of pests in the tea garden or drive pests can also be mixed and intercropped. Green manure irrigation: drip irrigation pipe is laid in the large distance and the small distance where green manure is planted, and appropriate amount of water is irrigated in time according to the water requirement of the green manure.

[0014] In some embodiments, the large-distance green manure is harvested and returned to the field: after the green manure grows for a season, the large-distance green manure is harvested and buried. The above-ground part of the large-distance green manure is first harvested and crushed, and is then scattered to adjacent small-distance green manure. Then, the underground part of the large-distance green manure is crushed and returned to the field. Alternatively, the above-ground part of the large-distance green manure can be crushed and scattered at the same time as the underground part is crushed and returned to the field.

[0015] In some embodiments, the small-distance green manure is harvested and returned to the field: after the green manure grows for a season, the small-distance green manure is harvested and crushed, and is then buried in the field. The time for returning the small-distance green manure to the field is generally after the large-distance green manure is crushed and scattered to the small-distance green manure. Alternatively, the small-distance green manure can be harvested and returned to the field according to the growth period of the small-distance green manure.

[0016] In some embodiments, the green manure is re-seeded: after the green manure is harvested, the next season of green manure is immediately planted.

[0017] The construction method provided by the present application is used for subsequent carbon and nitrogen self-sufficient tea garden management, and specifically comprises the following steps: (1) The carbon and nitrogen self-sufficient tea garden mainly uses green manure to supplement the nutrients required for tea garden production. In addition to timely and appropriate application of phosphorus, potassium and trace element fertilizers required for tea tree growth, no other fertilizers are applied.

[0018] (2) The tea garden intercropping requires that the green manure covers the ground all year round, and the ground cannot be exposed except for green manure re-seeding.

[0019] (3) The green manure of the tea garden intercropping can be harvested and returned to the field in spring, summer and autumn, and cannot be harvested before winter.

[0020] (4) In the tea garden in the cold northern winter area, the small-distance intercropped green manure is required to remain evergreen in winter, and the large-distance intercropped green manure is required to stand upright without lodging in winter. The stem height of the large-distance intercropped green manure before winter is required to be more than 0.3 m higher than the height of the tea tree.

[0021] (5) After the spring tea of the season is finished, the tea tree is pruned, and the pruned tea tree should maintain a fan-shaped structure. In addition to the conventional pruning, the branches parallel to the tea row direction should be cleaned every other year.

[0022] The present application has the following advantages: (1) The present application meets the carbon and nitrogen requirements of tea garden production by intercropping a certain area of carbon and nitrogen fixing green manure in the tea garden according to the needs of tea production, and uses special machinery to harvest and bury the green manure, so as to improve the ecology of the tea garden, increase the carbon fixation capacity of the tea garden, reduce the exogenous input of the tea garden, and improve the quality and safety of the tea.

[0023] (2) The tea garden constructed by the present application can realize carbon and nitrogen self-sufficiency without the need for external carbon and nitrogen fertilizer. The present application can significantly improve the physical and chemical properties of the soil in the tea garden, effectively reduce the bulk quality and soil compaction of the soil in the tea garden, and increase the organic matter content of the soil. The present application can improve the stability of the ecological system and the carbon fixation capacity of the tea garden. (3) The application can select the green manure type and intercropping technology of tea garden according to the soil characteristics and climate characteristics of the tea garden, solves the problems of low soil organic matter, soil exposure and soil hardening of the existing tea garden, and has good popularization significance. DETAILED DESCRIPTION

[0024] The technical solutions of the application are further explained and described below through specific examples.

[0025] Experimental plot: Shandong tea area In the process of constructing the tea garden, the green manure for intercropping in the tea garden should preferably be nitrogen-fixing leguminous plants; when considering the comprehensive utilization of seasons, ecology, grass suppression and the like, cruciferous plants and gramineous plants and the like are considered.

[0026] The green manure for intercropping in the tea garden should be selected to have pest repelling properties for the tea garden.

[0027] The green manure planted in the empty land around the tea garden should preferably be a plant with large biomass, so as to effectively provide the tea garden with fertilizer supplement or as a source of forage.

[0028] The ditch and trench at the head of the land should be perennially planted with perennial green manure with vigorous root systems, so as to play a role in protecting the dike and preventing the collapse of the ditch and trench.

[0029] The green manure outside the tea garden can be selected to be a plant that has an attracting effect on pests in the tea garden, or a plant that can be used as a habitat for natural enemies of pests in the tea garden, so as to play a role in improving the ecological benefits of the tea garden while serving as a source of fertilizer for the tea garden.

[0030] The green manure for intercropping in the tea garden should play a beneficial ecological role in the production of the tea garden during the growth process. For example, the green manure variety for summer intercropping should be selected to be a low, sprawling, vigorous and drought-tolerant variety, which can play a role in suppressing grass while not hindering the production of the tea garden and the ventilation of the tea rows; the green manure variety for winter intercropping should be selected to be a tall, cold-resistant or physiological activity-maintaining variety, which can play a role in wind blocking, humidity increasing and temperature preserving, and improve the cold resistance of the tea garden.

[0031] The green manure intercropping in the tea garden should adopt a year-round green manure full coverage mode, that is, different green manure is sowed and filled in the spring, summer and autumn seasons, so as to achieve the full coverage of the soil of the tea garden by the green manure all year round.

[0032] (1) Young tea garden 1-2 year old young tea garden green manure should choose tall stem green manure such as sesbania cannabina and so on, which plays a role in shading tea garden in summer; or plant green manure with developed root system, which plays a role in loosening soil, increasing deep soil organic matter and water conservation after rotting. Tall green manure plants can not be buried in winter and autumn, which plays a role in preventing wind and cold. Early spring season topdressing and watering before spring are harvested and buried, and green manure is planted in spring and summer. Winter rape, winter wheat, hairy vetch (Lucao No. 1, planted in late September, creeping type, height and density related), pea (overwintering variety), and February orchid (planted in late August) are suitable for autumn and winter green manure in young tea garden.

[0033] Spring: topdressing, arrow-shaped pea, pea, field radish (blue flower) Spring and summer: sesbania cannabina, sesbania cannabina, rice bean (strong climbing), adzuki bean (hardened ground) Autumn and winter: hairy vetch, February orchid, field radish, winter rape, pea, winter wheat (2) mature tea garden Mature tea garden in autumn and winter should choose tall stem and wintering green manure that does not wither, which plays a role in preventing wind and cold, increasing tea garden microclimate humidity and preventing frost; low height, high density, high growth and no obstacles to tea tree growth are suitable for green manure in spring and summer, which plays a role in grass suppression, field fertilization and does not affect tea garden production operation. When the growth is too high, measures should be taken as soon as possible. Aromatic plants with repellent effect on pests can be selected.

[0034] Spring: topdressing, clover, hairy vetch, arrow-shaped pea, pea, field radish (blue flower).

[0035] Summer: hairy vetch, green soybean (Fengdou Pasture Green), rice bean, adzuki bean (hardened ground, poor water retention capacity), peanut Autumn and winter: hairy vetch, February orchid, winter rape, pea, winter wheat.

[0036] (3) Tea garden head The head can be planted with tall green manure in summer and autumn, which plays a role in preventing wind and wind in winter, such as sesbania cannabina and sesbania cannabina (4) Field gap The gap in tea garden is generally a small plot that cannot be planted with tea, which can be planted with green manure or pasture. Green manure can choose plants that attract pests in tea garden, such as field radish and sesbania cannabina.

[0037] (5) Green manure in field ridge ditch Field ridge ditch can play a role in protecting dike and preventing soil erosion, which should choose strong vine plants such as rice bean.

[0038] When picking fresh tea leaves in a tea garden, the picker or picking machine walks in small distances to pick the leaves.

[0039] Example 1 This example is located in Taian, Shandong Province, and was implemented in 2020. The tea variety is Fuding Dabaitea.

[0040] 1. Construction of a carbon and nitrogen self-sufficient tea garden (1) Selection of tea garden: Select a plot with a length of less than 50 meters and a minimum width of not less than 5.2 meters. The size of the contiguous tea garden should be not less than 66.7 hm 2 . Level the land to a slope of not more than 30 degrees. Set up at least 1-meter-wide mechanical paths at both ends of the plot and build water and fertilizer integration facilities.

[0041] (2) Raising of tea ridges: Raise the ridges in a circular arrangement according to the "large distance- tea ridge- small distance- tea ridge" arrangement specification. The ridge height is 0.2 m, the ridge width is 0.6 m, and the distance between the two ridges is 1.6-2 m in large distance and 0.8-1.2 m in small distance. (The remaining plot width after multiple cycles of the tea garden plot should be wider than the large distance. If the width is insufficient, the last cycle is cancelled, and the large distance on both sides of the plot is widened.) (3) Laying of tea ridge drip irrigation pipes: Lay a water and fertilizer integration drip irrigation pipe on the tea ridge, then cover the tea ridge with a film, and drill planting holes according to the tea planting positions.

[0042] (4) Green manure intercropping: Plant nitrogen-fixing and carbon-fixing green manure in the small distance and the large distance of the tea garden.

[0043] (5) Tea tree planting: Plant tea seedlings in the middle of the tea ridge. Plant the tea trees in a single row with a spacing of 0.1-0.15 m, and plant one tea tree per hole. (6) Tea tree shaping: After planting the tea trees, leave the side branches perpendicular to the direction of the tea ridge and cut the side branches parallel to the direction of the tea ridge. Shape the tea trees into a flat fan shape to form a planar fan-shaped tree shape.

[0044] 2. Carbon and nitrogen self-sufficient tea garden green manure intercropping (1) Green manure planting: According to the local climate and soil conditions of the tea garden, select suitable green manure for intercropping. Plant low-growing, nitrogen-fixing, and carbon-fixing green manure in the small distance and high-growing, nitrogen-fixing, and carbon-fixing green manure in the large distance. In addition to nitrogen-fixing and carbon-fixing green manure, you can also intercrop with herbaceous plants that attract tea garden pest predators or repel pests.

[0045] (2) Green manure watering: Lay drip irrigation pipes in the large distance and small distance where the green manure is planted. Water the green manure in a timely and appropriate manner using drip irrigation based on the water requirements of the green manure.

[0046] (3) Large distance green manure harvesting and returning to field: After the large distance green manure grows for a season, it is harvested and buried. The above-ground part of the large distance green manure is first harvested, crushed and scattered to the adjacent small distance, then the underground part is crushed and returned to the field, or the above-ground part is crushed and scattered and the underground part is crushed at the same time.

[0047] (4) Small distance green manure harvesting and returning to field: After the small distance green manure grows for a season, it is harvested, crushed and buried in place. The time of returning the small distance green manure to the field is generally after the large distance green manure is crushed and scattered to the small distance, or it can be harvested and returned to the field according to the growth period of the small distance green manure.

[0048] (5) Green manure re-planting: After the green manure is harvested, the next season of green manure planting is immediately carried out.

[0049] 3. Carbon and nitrogen self-sufficient tea garden management (1) The carbon and nitrogen self-sufficient tea garden mainly uses green manure to supplement the nutrients required for tea production. In addition to timely application of phosphorus fertilizer and trace elements, no large element fertilizer application is allowed.

[0050] (2) The tea garden intercropping requires year-round green manure coverage. In addition to green manure replacement, the ground should not be exposed.

[0051] (3) The green manure of tea garden intercropping can be harvested and returned to the field in spring, summer and autumn, and cannot be harvested before winter.

[0052] (4) The green manure of small distance intercropping requires evergreen in winter, and the green manure of large distance intercropping requires straight and not lodging in winter. The stem height of the green manure of large distance intercropping before winter should be more than 0.3 m higher than the height of the tea tree.

[0053] (5) After the spring tea of the season is finished, the tea tree is pruned. The pruned tea tree should maintain a fan-shaped structure. In addition to regular pruning, the branches parallel to the tea row direction should be cleaned every other year.

[0054] 4. Tea garden picking When picking tea in the tea garden, the picker or picking machine walks in the small distance to pick.

[0055] Comparative Example 1 This comparative example is located in Tai'an, and was implemented in 2010. The tea tree variety is Fuding Dabaikai.

[0056] 1. Tea garden construction (general).

[0057] (1) Tea garden selection: The land is leveled to a slope of 25 degrees or less, and the size of the contiguous tea garden is not less than 66.7 hm 2 .

[0058] (2) Tea tree planting: Single row strip planting is used with a row distance of 1.5-1.8 meters; or double row strip planting is used with a large row distance of 1.5-1.8 meters and a small row distance of 0.3 meters; (3) Tea tree spacing 0.3-0.5m; (4) Tea tree shaping: tea tree shaping pruning, tea tree after shaping generally for spindle-shaped tree type.

[0059] 2, Tea garden management (1) Green manure intercropping: young tea garden can be green manure intercropping, mature tea garden has no must requirements.

[0060] (2) Using soil testing formula fertilization technology, base fertilizer and topdressing combined application, organic fertilizer, chemical fertilizer combined application, ditch fertilization. The annual application amount of organic fertilizer is not less than 1500kg / hm 2 .

[0061] (3) Tea garden requires timely take technical measures such as weeding, pest control, etc.

[0062] Effect example The planting method provided by example 1 and comparative example 1 is compared in terms of tea garden soil organic matter, tea quality, etc.

[0063] 1, In Tai'an area self experimental base, according to the method of example 1 and comparative example 1, after continuous planting for five years, organic carbon detection is carried out. The detection method is as follows: (1) Undisturbed soil sample collection: in the middle of October, undisturbed soil sample collection is carried out in green manure intercropping tea garden. A representative flat position is selected in the row, the surface layer of dry branches and leaves and other sundries is cleaned with a shovel, then a profile with a length width height of about 1m 0.5m 0.8m is dug out, and undisturbed soil sample is collected according to every 20 cm as a layer. The collected undisturbed soil is packed into hard plastic boxes, taken back to the laboratory for air drying, and broken into <8 mm small pieces along the natural cracks during the air drying process for standby.

[0064] (2) Aggregation size classification (dry sieving-wet sieving method): First, different particle size mechanical stability aggregates were separated by dry sieving method: >8 mm, 8-5 mm, 5-2 mm, 2-0.25 mm, <0.25 mm, and weighed. The different particle size aggregates obtained by dry sieving were mixed according to their mass percentage to form a 50 g aggregate mixture, and then the water stability of the aggregate was classified by wet sieving method. The 50 g aggregate mixture was placed on the top layer of the nested sieve, and the nested sieve had a pore size of 2 mm, 0.25 mm, and 0.053 mm from top to bottom. Then the nested sieve was placed in a sleeve filled with distilled water, ensuring that the water surface submerged the soil sample. After soaking for 5 min, the soil sample was oscillated up and down with an amplitude of 3 cm and a frequency of 50 times / min for 5 min. The soil samples remaining on each layer of the sieve were collected, resulting in three particle sizes of >2 mm, 2-0.25 mm, and 0.25-0.053 mm aggregates. The soil suspension in the sleeve was centrifuged, and the sediment in the centrifuge tube was <0.053 mm particle size aggregate. All particle sizes were dried at low temperature, weighed, and the percentage of each particle size aggregate was calculated.

[0065] (3) Organic carbon content determination of different particle size water stable aggregates: Elemental analysis (Elemental, VarioPYRO cube, Germany) was used to determine the organic carbon content in the original soil and different particle size aggregates (according to the actual situation, the >2 mm particle size after wet sieving was mainly sand and stone, and the organic carbon content could not be determined). The results of other particle sizes are shown in Table 1.

[0066] Table 1 According to the results, the organic carbon content of the original soil in the different soil layers of the examples increased by different degrees compared to the comparative examples, and the increase in the plough layer (0-20 cm) was the largest (increased by 1.7 times), and the increase in the 20-40 cm and 40-60 cm soil layers was 51.4% and 15.4%, respectively. In addition, the organic carbon content of different particle sizes in each soil layer of the examples also increased by different degrees, with an increase of 22.4%-118%. Therefore, the carbon sequestration capacity of the examples is better than that of the comparative examples.

[0067] 2. The planting method provided in Example 1 and Comparative Example 1 was used to pick spring tea on April 20, 2025 and summer tea on July 10, 2025, with a picking specification of 1 bud 1 leaf. The tea fresh leaves were freeze-dried and solidified, and the percentage of free amino acids, total tea polyphenols, and cellulose in the total dry matter was determined according to the national standard method.

[0068] Table 2 From the test results, it can be seen that the spring tea and summer tea of the examples are higher than the comparative example in free amino acid content; the total tea polyphenol content of the examples is not much different from the comparative example in spring tea, but is significantly lower than the comparative example in summer tea; the cellulose content of the spring tea and summer tea of the examples is lower than the comparative example. This result shows that the tea produced by the examples is fresher and has better tenderness.

Claims

1. A method for constructing a carbon and nitrogen self-sufficient tea garden, characterized in that, Includes the following steps: (1) Tea garden selection: Select a suitable plot of land and level the land to a certain slope; (2) Ridging in tea gardens: Ridging is carried out in a cyclical manner according to the arrangement specification of "large spacing-tea ridge-small spacing-tea ridge"; (3) Laying drip irrigation pipes on tea ridges: Lay water and fertilizer integrated drip irrigation pipes on the tea ridges, then cover the tea ridges with film, and make planting holes on the film according to the planting position of the tea trees; (4) Green manure intercropping: Planting nitrogen-fixing and carbon-fixing green manure in the tea garden with small and large spacing; (5) Tea tree planting: The single-row strip planting mode is adopted, and the tea trees are planted on the middle row line of the tea ridge; (6) Shaping the tea tree: After the tea tree is planted, leave the side branches that are perpendicular to the direction of the tea ridge and cut off the side branches that are parallel to the direction of the tea ridge. Shaping the tea tree into a flat fan shape will make the tea tree plant form a flat fan shape.

2. The construction method according to claim 1, characterized in that, In step (1), the length of the plot is between 20 and 50m, and the minimum width is not less than 5.2m; the slope is less than 30 degrees.

3. The construction method according to claim 1 or 2, characterized in that, In step (2), the tea ridge is 0.2m high, 0.6m wide, and the distance between the two ridges is 1.6-2m wide and 0.8-1.2m wide.

4. The construction method according to any one of claims 1-3, characterized in that, In step (4), low-growing, creeping nitrogen- and carbon-fixing green manure is planted in small-spacing intercropping; and tall, vigorous nitrogen- and carbon-fixing green manure is planted in large-spacing intercropping.

5. The construction method according to claim 1 or 4, characterized in that, After the growing season, large-spur green manure is harvested and buried. The above-ground parts of the large-spur green manure are first harvested, crushed, and blown to the adjacent small-spur green manure, and then the soil is plowed and the underground parts are crushed and returned to the field.

6. The construction method according to claim 5, characterized in that, After the growing season, small-pitch green manure should be harvested, crushed, and buried on-site. The return of small-pitch green manure to the field should be done after large-pitch green manure has been crushed and transported to small-pitch areas.

7. The construction method according to claim 1, characterized in that, In step (5), the tea trees are planted at a spacing of 0.1-0.15m, with one tree planted per hole.

8. The construction method according to any one of claims 1-7, characterized in that, During the construction of the tea garden, it is required that after multiple cycles of tea garden plots, the width of the remaining plots should be wider than the maximum distance; if the width is insufficient, the last cycle should be cancelled and the maximum distance on both sides of the plots should be widened.

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