CN113951036A - Big tree planting and drainage construction method in red clay area - Google Patents
Big tree planting and drainage construction method in red clay area Download PDFInfo
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- CN113951036A CN113951036A CN202111326461.4A CN202111326461A CN113951036A CN 113951036 A CN113951036 A CN 113951036A CN 202111326461 A CN202111326461 A CN 202111326461A CN 113951036 A CN113951036 A CN 113951036A
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- 241000422846 Sequoiadendron giganteum Species 0.000 title claims abstract description 74
- 238000010276 construction Methods 0.000 title claims abstract description 50
- 239000004927 clay Substances 0.000 title claims abstract description 44
- 239000002689 soil Substances 0.000 claims abstract description 47
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 30
- 239000003337 fertilizer Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 235000015097 nutrients Nutrition 0.000 claims abstract description 11
- 238000009412 basement excavation Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 5
- 206010052428 Wound Diseases 0.000 claims description 10
- 208000027418 Wounds and injury Diseases 0.000 claims description 10
- 238000013138 pruning Methods 0.000 claims description 5
- 230000000844 anti-bacterial effect Effects 0.000 claims description 3
- 239000003899 bactericide agent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 230000004083 survival effect Effects 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/04—Transplanting trees; Devices for grasping the root ball, e.g. stump forceps; Wrappings or packages for transporting trees
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Botany (AREA)
- General Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Agronomy & Crop Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a large tree planting and drainage construction method in a red clay region, which mainly comprises the operation steps of tree pit excavation, drainage and ventilation pipe laying, hydrophobic layer laying, non-woven fabric layer laying, compound fertilizer nutrient backfilling and the like. Through the red clay area big tree planting drainage construction method, accumulated water in the water pit can be discharged, smooth exchange of oxygen in the tree pit is guaranteed, and a channel is provided for later-stage maintenance and topdressing. Prevent soil hardening, keep soil moist, avoid the rainy day ponding too much. The growth and the growth of the big trees are promoted, the survival rate of the big trees planted in the red clay area can be improved, the lodging rate in the later-period maintenance process is reduced, the tree vigor of the big trees after being transplanted is recovered quickly, and the maintenance cost of the big trees after being transplanted is reduced.
Description
Technical Field
The invention relates to the technical field of environmental construction, in particular to a big tree planting and drainage construction method in a red clay area.
Background
As is well known, red clay refers to carbonate rock (limestone, dolomite, argillaceous mudstone, etc.), and is a high-plasticity clay of brownish red, brownish red or yellowish brown in residual volume, slope volume or residual slope volume, which is formed by weathering under the condition of subtropical warm and humid climate.
Researches find that red clay areas and red clay lands have own soil property characteristics; the red clay is high-plasticity clay with brownish red, brownish yellow and the like formed by lateritic treatment of exposed rocks of carbonate rock series. Most of the soil is the barren grassland, the vegetation is sparse, the water and soil loss is serious, and the water shortage is easy to cause drought. The combination of arbor, shrub and grass is carried out to develop the production of forest and animal husbandry.
In the garden design construction project, the prior art does not adopt a large-size big tree drainage construction method, and drainage treatment is carried out through a simple drainage ditch under the condition, but obviously, the drainage method can cause a large amount of water sources to be directly drained, and the large tree planting in a red clay area is extremely unfavorable although the large tree soil ball is ensured not to store a large amount of water sources.
Disclosure of Invention
The invention aims to provide a large tree planting and drainage construction method in a red clay area, which is used for solving the technical problem.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a big tree planting and drainage construction method in a red clay area, which comprises the following operation steps:
firstly, carrying out tree pit excavation construction operation on a site to be constructed to form a tree pit;
laying a hydrophobic layer on a middle tree pit of a site to be constructed;
carrying out treatment operation of laying a non-woven fabric layer and construction operation of laying a drainage vent pipe on the tree pit;
and carrying out planting soil backfilling and compound fertilizer nutrient fertilizer backfilling treatment operations on the tree pits.
Preferably, as one possible embodiment; the method is characterized in that the construction operation of tree pit excavation is carried out on a site to be constructed to form tree pit operation, and the method specifically comprises the following operation steps:
the method comprises the steps of measuring the diameter of a soil ball of a big tree to obtain the diameter of the soil ball of the big tree of N meters, excavating a tree pit of a site to be constructed, and excavating a tree pit with the diameter of N +1 meters to form a tree pit hole.
Preferably, as one possible embodiment; the method comprises the following steps of laying a hydrophobic layer on a middle tree pit of a site to be constructed, and specifically comprises the following operation steps:
a hydrophobic layer is arranged at the bottom of the tree pit hole close to the circumferential wall;
the hydrophobic layer comprises a mixed material layer formed by gravels and ceramsite.
Preferably, as one possible embodiment; the method comprises the following steps of carrying out treatment operation of laying a non-woven fabric layer and construction operation of laying a drainage vent pipe on the tree pit, and specifically comprises the following operation steps:
laying a plurality of layers of non-woven fabrics on the upper surface of the hydrophobic layer of the tree pit;
exposing the head end of the drainage vent pipe to the top surface of the big tree soil ball within a preset distance range, and inserting the tail end of the drainage vent pipe into the hydrophobic layer through the non-woven fabric.
Preferably, as one possible embodiment; the preset distance range is 15-20 cm.
Preferably, as one possible embodiment; and after the operations of planting soil backfilling and compound fertilizer nutrient fertilizer backfilling are carried out on the tree pit holes, pruning and wound sterile treatment are carried out on the big trees on the big tree soil balls.
Preferably, as one possible embodiment; the wound sterile treatment specifically comprises the following operation steps:
and spraying a rooting agent and a bactericide on the wound of the big tree.
Preferably, as one possible embodiment; and after the planting soil backfilling and compound fertilizer nutrient fertilizer backfilling processing operations are carried out on the tree pit holes, the big tree on the big tree soil ball is subjected to supporting processing and maintaining processing.
Preferably, as one possible embodiment; the supporting treatment comprises arranging a plurality of supporting rods around the big tree soil ball; one end of the supporting rod is connected with the trunk of the big tree, and the other end of the supporting rod is inserted into the planting soil layer.
Compared with the prior art, the embodiment of the invention has the advantages that:
the invention provides a red clay area big tree planting and drainage construction method, which mainly comprises the following operation process steps: firstly, carrying out tree pit excavation construction operation on a site to be constructed to form a tree pit; laying a hydrophobic layer on a middle tree pit of a site to be constructed; carrying out treatment operation of laying a non-woven fabric layer and construction operation of laying a drainage vent pipe on the tree pit; and carrying out planting soil backfilling and compound fertilizer nutrient fertilizer backfilling treatment operations on the tree pits.
In a specific technical scheme, the invention provides a construction method for planting and draining big trees in a red clay area, and additionally designs a hydrophobic layer, a drainage vent pipe and other structural designs; after laying the hydrophobic layer, carrying out treatment operation of laying a non-woven fabric layer and construction operation of laying a drainage vent pipe on the tree pit; can discharge into specific position (can ooze the hydrophobic layer that permeates to the tree hole cave in to the ponding hole that forms on big tree soil ball top surface promptly through the drainage permeability cell) to the ponding in the sump through the drainage permeability cell, prevent that soil from hardening, keep soil moist, avoid rainy day ponding too much. Meanwhile, smooth exchange of oxygen in the tree pits is guaranteed (the gas in the tree pit holes is exchanged with the oxygen at the top ends of the drainage vent pipes through the hydrophobic layers), and a channel is provided for later-stage maintenance and top dressing. The invention provides a large tree planting and drainage construction method in a red clay area, which can improve the survival rate of a large tree planted in the red clay area, reduce the lodging rate in the later-stage curing process, quickly recover the tree vigor of the large tree after transplanting, and reduce the curing cost of the large tree after transplanting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a main operation flow of a construction method for planting and draining water for big trees in a red clay area according to an embodiment of the present invention;
FIG. 2 is a schematic view of a specific operation flow of a construction method for planting and draining water for big trees in a red clay region according to an embodiment of the present invention;
FIG. 3 is a schematic view of another specific operation flow of a construction method for planting and draining water for big trees in a red clay region according to an embodiment of the present invention;
fig. 4 is a schematic view of another specific operation flow of the construction method for planting and draining water of big trees in the red clay area according to the embodiment of the present invention;
fig. 5 is a schematic view of a concrete operation flow of the construction method for planting and draining water for big trees in a red clay area according to an embodiment of the present invention;
fig. 6 is a schematic view of a big tree planting drainage structure in a big tree planting drainage construction method in a red clay region according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that certain terms of orientation or positional relationship are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example one
Referring to fig. 1, the embodiment of the invention provides a big tree planting and drainage construction method in a red clay region, which mainly comprises the following operation steps:
step S10, firstly, carrying out tree pit excavation construction operation on a site to be constructed to form a tree pit;
step S20, laying a hydrophobic layer on the middle tree pit of the site to be constructed;
step S30, carrying out the treatment operation of laying the non-woven fabric layer and the construction operation of laying the drainage vent pipe on the tree pit;
and step S40, carrying out planting soil backfilling and compound fertilizer nutrient fertilizer backfilling treatment operations on the tree pits.
In a specific technical scheme, the invention provides a construction method for planting and draining big trees in a red clay area, and additionally designs a hydrophobic layer, a drainage vent pipe and other structural designs; after laying the hydrophobic layer, carrying out treatment operation of laying a non-woven fabric layer and construction operation of laying a drainage vent pipe on the tree pit; accumulated water in the water pits can be discharged through the drainage vent pipes (namely, the accumulated water pits formed on the top surfaces of the large tree soil balls can be infiltrated through the drainage vent pipes to permeate the hydrophobic layers in the tree pit holes), soil hardening is prevented, soil is kept moist, and excessive accumulated water in rainy days is avoided. Meanwhile, smooth exchange of oxygen in the tree pits is guaranteed (the gas in the tree pit holes is exchanged with the oxygen at the top ends of the drainage vent pipes through the hydrophobic layers), and a channel is provided for later-stage maintenance and top dressing. The invention provides a large tree planting and drainage construction method in a red clay area, which can improve the survival rate of a large tree planted in the red clay area, reduce the lodging rate in the later-stage curing process, quickly recover the tree vigor of the large tree after transplanting, and reduce the curing cost of the large tree after transplanting.
Referring to fig. 2, the operation of performing tree pit excavation construction operation on the site to be constructed to form the tree pit hole specifically includes the following operation steps:
and step S11, measuring the diameter of the soil ball of the big tree to obtain the diameter of the soil ball of the big tree of N meters, excavating a tree pit of the site to be constructed, and excavating the tree pit of which the diameter is N +1 meters to form a tree pit hole.
Referring to fig. 3, the operation of laying a hydrophobic layer on the middle tree pit of the site to be constructed specifically includes the following operation steps:
step S21, arranging a hydrophobic layer at the bottom of the tree pit close to the circumferential wall;
the hydrophobic layer comprises a mixed material layer formed by gravels and ceramsite.
Referring to fig. 4, the treatment operation of laying the non-woven fabric layer and the construction operation of laying the drainage vent pipe are performed on the tree pit, and the method specifically includes the following steps:
s31, paving a plurality of layers of non-woven fabrics on the upper surface of the hydrophobic layer of the tree pit;
and step S32, exposing the head end of the drainage vent pipe within a preset distance range of the top surface of the big tree soil ball, and inserting the tail end of the drainage vent pipe into the hydrophobic layer through the non-woven fabric.
Preferably, as one possible embodiment; the preset distance range is 15-20 cm.
It should be noted that the extra-large tree must be provided with a drainage vent pipe, the lower part of the drainage vent pipe is wrapped by non-woven fabrics, the bottom of the drainage vent pipe is lower than the earth ball of the extra-large tree and is inserted into a hydrophobic layer (or called drainage layer) formed by gravels, and the top opening of the drainage vent pipe is exposed out of the ground by 15-20 cm, see also fig. 6.
According to the drainage method adopted in the embodiment of the invention, a large-size large tree drainage construction method is not adopted in the prior art, then the drainage vent pipe adopted in the embodiment of the invention is used for drainage treatment, when the water surface of accumulated water exceeds the top opening of the drainage vent pipe, a large amount of water is drained into the drainage layer directly through the drainage vent pipe, and thus the water cannot be accumulated to a large tree soil ball in a large amount and the root rot of the large tree cannot be caused;
meanwhile, water sources can be accumulated after entering the hydrophobic layer, then the current red clay area is ensured to be full of water sources, and meanwhile, a small amount of water sources are supplied to the big tree soil balls above the red clay area in an evaporation mode to avoid the big tree soil balls from being dry;
therefore, the technical scheme adopted by the embodiment of the invention can ensure that a large amount of water sources cannot be accumulated on the big tree soil balls, and is particularly suitable for planting big trees in red clay areas.
Preferably, as one possible embodiment; and after the operations of planting soil backfilling and compound fertilizer nutrient fertilizer backfilling are carried out on the tree pit holes, pruning and wound sterile treatment are carried out on the big trees on the big tree soil balls.
Referring to fig. 5, the wound sterile treatment specifically includes the following operation steps:
and step S41, spraying rooting agent and bactericide on the wound of the big tree.
Preferably, as one possible embodiment; and after the planting soil backfilling and compound fertilizer nutrient fertilizer backfilling processing operations are carried out on the tree pit holes, the big tree on the big tree soil ball is subjected to supporting processing and maintaining processing. The supporting treatment comprises arranging a plurality of supporting rods around the big tree soil ball; one end of the supporting rod is connected with the trunk of the big tree, and the other end of the supporting rod is inserted into the planting soil layer.
The red clay area big tree planting and drainage construction method adopted by the embodiment of the invention also needs to prune the big tree while maintaining, for example, the big tree pruning is mainly based on branch thinning, and the big tree is pruned properly on the premise of keeping the original crown shape. Combining pruning and thinning out the leaves of the big tree. A small number of leaves are left in each twig, depending on the size of the leaf. Meanwhile, the wound treatment is well done, so that the breeding of bacteria and the decay are prevented.
In conclusion, the invention provides the red clay area big tree planting and drainage construction method, which can improve the survival rate of the big trees planted in the red clay area, reduce the lodging rate in the later curing process, quickly recover the tree vigor of the big trees after being transplanted and reduce the curing cost of the big trees after being transplanted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A big tree planting and drainage construction method in a red clay area is characterized by comprising the following operation steps:
firstly, carrying out tree pit excavation construction operation on a site to be constructed to form a tree pit;
laying a hydrophobic layer on a middle tree pit of a site to be constructed;
carrying out treatment operation of laying a non-woven fabric layer and construction operation of laying a drainage vent pipe on the tree pit;
and carrying out planting soil backfilling and compound fertilizer nutrient fertilizer backfilling treatment operations on the tree pits.
2. The red clay area big tree planting and draining construction method according to claim 1, wherein the tree pit excavation construction operation is performed on the site to be constructed to form a tree pit hole operation, and the method specifically comprises the following operation steps:
the method comprises the steps of measuring the diameter of a soil ball of a big tree to obtain the diameter of the soil ball of the big tree of N meters, excavating a tree pit of a site to be constructed, and excavating a tree pit with the diameter of N +1 meters to form a tree pit hole.
3. The red clay area big tree planting and drainage construction method as claimed in claim 1, wherein the operation of laying a hydrophobic layer in a middle tree pit of a site to be constructed specifically comprises the following operation steps:
a hydrophobic layer is arranged at the bottom of the tree pit hole close to the circumferential wall;
the hydrophobic layer comprises a mixed material layer formed by gravels and ceramsite.
4. The red clay area big tree planting and draining construction method according to claim 1, wherein the treatment operation of laying the non-woven fabric layer and the construction operation of laying the drainage air-permeable pipe are performed on the tree pit, and the method specifically comprises the following operation steps:
laying a plurality of layers of non-woven fabrics on the upper surface of the hydrophobic layer of the tree pit;
exposing the head end of the drainage vent pipe to the top surface of the big tree soil ball within a preset distance range, and inserting the tail end of the drainage vent pipe into the hydrophobic layer through the non-woven fabric.
5. The red clay area big tree planting drainage construction method according to claim 4, wherein the preset distance is in a range of 15-20 cm.
6. The red clay region big tree planting and draining construction method according to claim 4, further comprising pruning big trees on the big tree soil ball and performing wound sterile treatment after the operations of planting soil backfilling and compound fertilizer nutrient fertilizer backfilling are performed on the tree pits.
7. The red clay area big tree planting drainage construction method according to claim 6, wherein the wound is treated in an aseptic manner, and the method comprises the following steps:
and spraying a rooting agent and a bactericide on the wound of the big tree.
8. The red clay region big tree planting drainage construction method according to claim 6, further comprising supporting and maintaining the big trees on the big tree soil ball after the operations of planting soil backfilling and compound fertilizer nutrient fertilizer backfilling are performed on the tree pits.
9. The red clay area big tree planting drainage construction method according to claim 8, wherein the supporting process comprises disposing a plurality of supporting rods around the big tree soil ball; one end of the supporting rod is connected with the trunk of the big tree, and the other end of the supporting rod is inserted into the planting soil layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111326461.4A CN113951036A (en) | 2021-11-10 | 2021-11-10 | Big tree planting and drainage construction method in red clay area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111326461.4A CN113951036A (en) | 2021-11-10 | 2021-11-10 | Big tree planting and drainage construction method in red clay area |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203290006U (en) * | 2013-06-04 | 2013-11-20 | 浙江建设职业技术学院 | Big tree salt and alkali prevention planting structure |
| CN111631060A (en) * | 2020-04-28 | 2020-09-08 | 中国一冶集团有限公司 | Construction method of large-diameter-at-breast arbor in non-planting season in rainwater-dense area |
| US20200404861A1 (en) * | 2017-09-04 | 2020-12-31 | Tree-Tube Ltd. | System and method for tree growth management |
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2021
- 2021-11-10 CN CN202111326461.4A patent/CN113951036A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203290006U (en) * | 2013-06-04 | 2013-11-20 | 浙江建设职业技术学院 | Big tree salt and alkali prevention planting structure |
| US20200404861A1 (en) * | 2017-09-04 | 2020-12-31 | Tree-Tube Ltd. | System and method for tree growth management |
| CN111631060A (en) * | 2020-04-28 | 2020-09-08 | 中国一冶集团有限公司 | Construction method of large-diameter-at-breast arbor in non-planting season in rainwater-dense area |
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Application publication date: 20220121 |