Construction method for transplanting large root-lifting and stone-attaching arbor

Abstract

The invention discloses a construction method for transplanting a large root-lifting and stone-attaching arbor. The method comprises the following steps: treatment before transplanting; excavating a soil ball; hoisting and hoisting; carrying out transportation; preparation before planting; planting nursery stocks; and supporting and fixing, and later maintenance. According to the method, the whole process is controlled through the technologies of plant root-cutting rejuvenation, digging, loading and unloading, transportation, planting, maintenance and the like before transplanting, tree-stone separation is avoided, rich fine roots and capillary roots are protected, and the technical breakthrough of transplanting of the large-scale root-lifting and stone-attaching arbor is achieved.

Description

Technical Field

[0001] The present application relates to the field of seedling planting, and in particular to a construction method for transplanting large-scale root-lifted and stone-attached trees. Background Art

[0002] Large-scale root-lifted rock-clinging trees (root-embracing rocks) have their main roots cut off in the early stages of their growth to form abundant lateral roots. These lateral roots and secondary lateral roots grow to the ground, adsorbing and wrapping stones to form a special landscape. Therefore, when transplanting large-scale root-lifted rock-clinging trees, the entire process needs to be controlled to avoid separation of the "tree and stone" and to protect the abundant fine roots and capillary roots.

[0003] Furthermore, because the "roots hugging rocks" have strong and well-developed fibrous root systems, they grow close to the rocks and possess strong vitality. The pre-transplantation treatment differs from the conventional excavation method based on the trunk as specified in the "Technical Regulations for Large Tree Transplantation" (DB45 / T 1821-2018).

[0004] In order to avoid separation of the "tree and stone" and other damage during the transplantation process, and to ensure the growth of large root-lifted and stone-attached trees after transplantation, it is difficult to ensure smooth implementation with existing technologies due to their special morphology. Summary of the Invention

[0005] In order to solve the deficiencies in the above-mentioned prior art, the present application proposes a construction method for transplanting large-scale root-lifted stone trees, which can not only ensure that the "tree-stone" separation and other damage to the large-scale root-lifted stone trees are not caused during the transplantation process, but also ensure the good growth condition of the large-scale root-lifted stone trees after transplantation.

[0006] In order to achieve the above-mentioned invention objectives, this application provides the following technical solutions:

[0007] A construction method for transplanting large root-lifted and stone-attached trees, the method comprising the following steps:

[0008] Step 1: Pre-transplantation treatment: According to the size of the "roots hugging the rocks", support and root reduction treatment should be performed on the large root-lifted and rock-attached trees to be transplanted;

[0009] Step 2: Excavation of the soil ball: While avoiding damaging the fibrous roots, the root ball of the large root-raising stone tree is completely excavated from the ground, and the excavated root ball is wrapped;

[0010] Step 3, hoisting: Through force analysis and trial lifting, find the center of gravity and hoist the large root-lifted tree onto the transport vehicle;

[0011] Step 4: Transportation: Transport the large root-lifted stone trees to be transplanted to the designated planting location;

[0012] Step 5: Pre-planting preparation: Prune branches and dig a planting hole that is the size of the root ball of the large root-lifted rock tree to be transplanted;

[0013] Step 6, Planting of Seedlings: Hoist the large root-lifted stone tree to be transplanted above the planting hole, adjust the orientation and slowly lower the large root-lifted stone tree to be transplanted into the planting hole, then adjust the center of gravity so that the weight of the large root-lifted stone tree is completely concentrated on the part where the roots are wrapped around the stone, and then fill the planting hole;

[0014] Step 7, support and fixation: After the landfill is completed, support the large-scale root-attached stone trees. After the support is fixed, water them immediately to help them take root.

[0015] Furthermore, in step 1, the method for supporting and reducing the roots of the transplanted large root-lifted stone trees includes the following steps:

[0016] Step 11, Support: According to the size and growth environment of the "root-hanging rock", choose a sturdy wood or metal material as a support rod. The diameter of the support rod should be 2-3cm, and the length of the support rod should be half of the overall height of the large root-hanging rock tree. The angle between the support rod and the ground should be 45 degrees.

[0017] Step 12, root reduction: At least three months before the large-scale root-attached stone trees are ready for transplantation, their roots are cut off. The root cutting position is 30 cm along the outer diameter of the stone and the fibrous root. A working trench with a width of 50 to 70 cm is excavated downward in a circular manner. The roots are cut off and backfilled with improved soil. The components of the improved soil are, by weight, 35%-45% planting soil, 8%-12% perlite, 3%-7% vermiculite, 25%-35% weathered rock, 8%-12% peat soil, and 3%-7% organic fertilizer.

[0018] Furthermore, in step 2, the specific method of soil ball excavation includes the following steps:

[0019] Step 21: When the transplanting time is in the dry season, since the soil moisture content is low, it is necessary to water it thoroughly 3 days before digging;

[0020] Step 22: Dig at the location of the severed roots to avoid damaging the newly formed fibrous roots: First, dig a trench vertically downwards, 50 cm wide and 80 cm deep, and then remove excess soil at a 75-degree angle downwards along the soil ball. The root wounds severed during the digging process should be sharp and flush, without cracks. Apply wound healing agent in a timely manner, and ensure that the soil ball is excavated within 4 hours.

[0021] Step 23, wrap a layer of geotextile on the excavated soil ball, and make the geotextile fit tightly with the soil ball and stones, then cover it with a layer of black sun-proof net, and then use steel wire rope to make a mesh binding around the sun-proof net, and then use hemp rope to tighten the loose parts between the steel wire ropes to make the binding firm.

[0022] Furthermore, the transpiration inhibitor is diluted 500-1000 times with water, and before wrapping the geotextile, the root system and the crown of the tree are evenly sprayed with the diluted transpiration inhibitor.

[0023] Furthermore, in step 3, the hoisting method specifically includes the following steps:

[0024] Step 31, lifting: After finding the center of gravity, use rocks or tree trunks as lifting points, two-point or three-point lifting, and lift it above the car;

[0025] Step 32, Preparation before loading: Adjust the direction of large root-lifted stone trees so that the soil ball is close to the cab and the crown is facing the rear of the vehicle, so that the tree body is placed parallel to the length of the vehicle. Place soft materials on the contact surface between the tree and the vehicle and evenly raise it. Use folded soft pads 8-10 cm thick to cushion sharp edges and corners of stones and where plant roots are tied.

[0026] Step 33, loading: tie 1-2 traction ropes to the lower roots of the large root-lifted stone tree, and manually assist in traction control to ensure smooth loading;

[0027] Step 34, Covering: After loading is completed, cover with waterproof and breathable tarpaulin + shade net, and ensure ventilation.

[0028] Furthermore, in step 4, during long-distance transportation, the leaves are evenly and comprehensively sprayed with the diluted transpiration inhibitor every 4 hours, and the roots of large root-raising and stone-attached trees are sprayed with water every 2-4 hours.

[0029] Furthermore, in step 5, the pre-planting preparation specifically includes the following steps:

[0030] Step 51: Prune off broken branches, dead branches, drooping branches, diseased and insect-infested branches, and branches that affect the shape of the tree, and apply wound healing agent to the incisions. The amount of pruning should not exceed 1 / 5 of the crown.

[0031] Step 52: Determine the size of the planting hole based on the shape of the soil ball. Specifically, the hole should be 20-40 cm wider than the length and width of the soil ball, and 30-50 cm deeper than the height of the soil ball. The hole should be dug vertically and the diameters of the top and bottom should be the same.

[0032] Step 53: Lay a drainage layer at the bottom of the planting hole. The drainage layer is constructed from bottom to top in the following order: non-woven fabric, 15 cm gravel, and non-woven fabric. The drainage layer is connected to the external drainage network.

[0033] Furthermore, in step 6, the planting hole is corrected and the drainage layer is checked for quality. After the drainage layer is confirmed to be qualified, soft materials are laid in the planting hole as a liner; after the center of gravity of the large root-raising stone tree is adjusted, the hemp rope, steel wire rope, geotextile and sun-proof net wrapped around the soil ball are removed layer by layer from bottom to top as the height of the landfill soil rises during landfill; four air-permeable tubes are placed symmetrically close to the side of the soil ball in the length and width directions; and the improved soil is used for landfill soil.

[0034] Furthermore, in step 7, water the roots until they are thoroughly watered, then evenly de-energize the excavator, remove the slings, evenly de-energize the crane, check the support conditions and remove the slings after confirming safety, and spray a rejuvenation agent before watering the roots. The rejuvenation agent includes 20,000 times diluted Bihu, 1,000 times diluted propiconazole, 500 times diluted Bacillus subtilis, and 500 times diluted Bacillus amyloliquefaciens.

[0035] Furthermore, in the early stage after transplantation of large-scale root-lifted rock-attached trees or in hot and dry seasons, the crowns should be sprayed with water regularly; in winter, the trunks and main branches should be tightly wrapped with straw ropes or cold-proof cloth, and gradually removed after the temperature rises; sphagnum moss should be added in the gaps between the roots and the stones.

[0036] Compared with the existing technology, the technical solution of this application has the following advantages:

[0037] 1. Prevent separation of the tree and rock and damage to fibrous roots by controlling the support, soil ball wrapping, soft material padding arrangement, and hoisting process before transplantation;

[0038] 2. Through measures such as soil improvement before transplantation, soil ball wrapping, and spraying transpiration inhibitors, we ensure that large root-lifted rock-attached trees can maintain good growth conditions after long-distance transportation;

[0039] 3. Ensure the shape of seedlings after planting through pruning and support, and ensure survival and good growth after transplantation through post-maintenance measures.

[0040] 4. It makes up for the lack of transplanting technology for large-scale root-lifted and stone-attached trees in the field of seedling planting. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a plan view of the soil ball excavation operation in Example 1 of the present invention.

[0042] Figure 2 This is a front cross-sectional view of the soil ball excavation operation in Example 1 of the present invention.

[0043] Figure 3 This is a side sectional view of the soil ball excavation operation in Example 1 of the present invention. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of this application more clearly understood, the present application is described below using specific embodiments. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of this application. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of this application.

[0045] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0046] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be understood to indicate or imply relative importance. These terms are only used to distinguish information of the same type from each other. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information without departing from the scope of this disclosure. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0047] In the description of this application, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0048] Example 1

[0049] A construction method for transplanting large root-lifted and stone-attached trees, the method comprising the following steps:

[0050] Step 1: Pre-transplantation treatment: According to the size of the "roots hugging the rocks", support and root reduction treatment should be performed on the large root-lifted and rock-attached trees to be transplanted;

[0051] Support: Depending on the size of the "root boulder" and its growing environment, choose sturdy wood or metal support poles. The poles should be at least 2-3 cm in diameter and the length should be halfway to the overall height. The poles should be sunk into the ground and placed to the side of the trunk; they should not be tied directly to the trunk to avoid damaging the bark. The poles should be angled approximately 45 degrees to the ground to provide maximum support. After installing the poles, adjust the support force to ensure the tree is upright and stable. Do not overdo the support force, as this will affect the normal growth of the tree wall.

[0052] Root reduction: Roots should be cut at least three months before transplanting. Cut the roots 30 cm from the outside diameter of the stone and fibrous roots. Dig a 50-70 cm wide trench downward in a circular pattern, cut the roots, and backfill with improved soil. Add a special rejuvenation medium (pharmaceutical). The improved soil must be loose and breathable, rich in organic matter, and have a balanced variety of nutrients to better promote the germination of new fibrous roots at the root fracture.

[0053] The improved soil is made of planting soil, perlite, vermiculite, weathered rock, peat soil and organic fertilizer in proportion. The recommended proportion is: 40% planting soil: 10% perlite: 5% vermiculite: 30% weathered rock: 10% peat soil: 5% organic fertilizer.

[0054] Step 2: Excavation of the soil ball: While avoiding damaging the fibrous roots, the root ball of the large root-raising stone tree is completely excavated from the ground, and the excavated root ball is wrapped;

[0055] Watering: When digging in the dry season, water it thoroughly 3 days before digging to facilitate quick and easy digging of the soil ball and ensure that the soil ball is formed.

[0056] like Figure 1-3 As shown, excavation: dig at the location of the broken roots, and be careful to avoid damaging the new fibrous roots.

[0057] ① First dig a working trench vertically downwards, 50cm wide and 80cm deep, and then shovel away excess soil at a 75° angle along the soil ball.

[0058] ② The root wounds cut during the excavation process should be sharp and flat without cracking. Wound healing agent should be applied in time, and the soil ball should be excavated within 4 hours.

[0059] ③During the excavation process, it is strictly forbidden to shake the tree trunk or hit the stones to avoid separation of the "tree and stone".

[0060] Bandaging:

[0061] ① To prevent the soil ball from scattering, first wrap it with a layer of geotextile (250g / ㎡) to ensure it fits tightly against the soil ball and stones, then cover it with a layer of black sunscreen netting. Steel wire rope or hemp rope should be used instead of straw rope for the binding.

[0062] ② Tie the sun-proof net firmly with wire around the outside. The wire should be crossed to form a mesh to ensure that there is no looseness or slippage around.

[0063] ③ Use hemp rope to tighten the loose parts between the wires. A mesh shape is also preferred.

[0064] ④ The overall soil wrapping depends on the situation of the roots wrapped around the stones. The binding force must be balanced, the roots must not be damaged, and the "tree and stone" must not be separated.

[0065] Spraying: 2 hours before excavation, dilute the transpiration inhibitor 500-1000 times with water and spray it. The transpiration inhibitor uses a composite natural transpiration inhibitor. It is based on the principles of natural safety, low toxicity and high efficiency. It uses a variety of plant sources and marine biological materials to synergistically act on the physical, chemical and physiological regulation pathways of plant stomata. It is suitable for evergreen seedlings and urban street trees such as camphor, nanmu, camphor, osmanthus, etc. It is especially suitable for foliar spraying and maintenance in hot and dry seasons, seedling transplanting, pruning and periods of high pest and disease pressure. It has the characteristics of rapid onset, lasting effect for 3 to 7 days, safe and no pesticide damage. Spray the roots and crowns evenly, especially the back of the leaves, which can effectively reduce water loss during the excavation process and transportation.

[0066] Step 3, hoisting: Through force analysis and trial lifting, find the center of gravity and hoist the large root-lifted tree onto the transport vehicle;

[0067] The site for mechanical lifting must have sufficient load-bearing capacity and be staffed with relevant professional technicians. Operators must strictly follow safety regulations. Before lifting, prepare auxiliary materials such as sandbags for fixing.

[0068] Lifting: After the soil ball is wrapped, conduct a thorough force analysis and test lift. The lifting position should be determined by combining the center of gravity position and force balance. Use a guy rope, using rocks or tree trunks as lifting points, and perform two- or three-point lifting to maximize the protection of the "tree and rock" from separation.

[0069] Loading: 1-2 traction ropes are tied to the lower roots of the "tree root hugging stone", and manual traction control is used to ensure smooth loading of the "tree body".

[0070] ① When loading, the soil ball should be close to the cab and the crown should be facing the rear of the vehicle.

[0071] ② Place sandbags, bundles of straw ropes, cotton strips and other soft materials on the contact surface between the trees and the carriage to evenly raise the height. Place the trees parallel to the length of the carriage and load them as close to the cab as possible.

[0072] ③ Use 8-10cm thick sack or other soft padding to pad the sharp edges of stones and the places where plant roots are tied to prevent the ropes from being cut or the roots from being injured.

[0073] Covering: Cover with waterproof and breathable tarpaulin + shade net to prevent heavy rain from dispersing the soil ball, reduce plant water evaporation, ensure ventilation of seedlings, and avoid long-term transportation of seedlings and accumulation of heat, which may lead to seedling burns.

[0074] Step 4: Transportation: Transport the large root-lifted stone trees to be transplanted to the designated planting location;

[0075] Long-distance transportation: Try to transport seedlings in the morning or evening, avoiding the strong midday sun to prevent rapid water loss due to sun exposure. Drive at a steady speed during transportation, and avoid sudden starts and stops. The speed on highways should not exceed 80 km / h. When encountering poor road conditions, the speed should be controlled at 20-40 km / h.

[0076] Spraying: Because the soil ball of the "Tree Root Boulder" contains little soil and the root system's own ability to supply water is limited, during the transportation of the "Tree Root Boulder", transpiration inhibitors are sprayed on the leaves every 4 hours to form a protective film on the leaf surface, close the stomata, slow down metabolism, reduce water evaporation, and increase the survival rate.

[0077] Water spraying: During long-distance transportation, pay attention to maintaining the humidity of the "tree root boulder". Spray the "tree root boulder" with water at the service area every 2-4 hours to replenish moisture and increase the humidity in the vehicle. During transportation, assign a dedicated person to escort the vehicle and keep good supervision and maintenance records.

[0078] Step 5: Pre-planting preparation: Prune branches and dig a planting hole that is the size of the root ball of the large root-lifted rock tree to be transplanted;

[0079] Pruning: Prune off broken branches, dead branches, drooping branches, diseased and insect-infested branches, and some branches that affect the shape to ensure the landscape shape. The cuts should be smooth when pruning, and a wound healing agent should be applied. The pruning amount should not exceed 1 / 5 of the crown.

[0080] Tree pit: Determine the size of the tree pit based on the shape of the soil ball where the tree roots embrace the rock.

[0081] ① The width of each side in the length and width direction is 20-40cm, and the depth is 30-50cm deeper than the soil ball. The planting hole must be dug vertically, with the same diameter at the top and bottom, and the walls must be straight and the bottom must be flat.

[0082] ② Lay the drainage layer at the bottom of the planting hole. The drainage layer structure adopts the form of "non-woven fabric + 15cm gravel + non-woven fabric" from bottom to top. The drainage layer must be connected to the external drainage network.

[0083] Improvement: Use the tree pit improvement method, referring to the rejuvenation treatment of the seedling source before planting. The improved soil should be loose and breathable, rich in organic matter, and have a balanced variety of nutrients to ensure rapid and healthy plant growth.

[0084] Step 6, Planting of Seedlings: Hoist the large root-lifted stone tree to be transplanted above the planting hole, adjust the orientation and slowly lower the large root-lifted stone tree to be transplanted into the planting hole, then adjust the center of gravity so that the weight of the large root-lifted stone tree is completely concentrated on the part where the roots are wrapped around the stone, and then fill the planting hole;

[0085] Trim: Trim the planting hole and check whether the drainage layer is qualified. Place sandbags, cotton strips, hemp rope and other soft materials as padding on one side of the planned planting hole.

[0086] Planting: It is done by manual labor, excavator and truck crane.

[0087] ①Hang the "tree root hugging the stone" above the planting hole and keep it still. Observe the tree shape and environment, move and adjust the crown position to the same direction as the original habitat.

[0088] ② Use manual cable wind ropes and crane to slowly and evenly lower the tree, with one side of the soil ball falling on the pad first to avoid sliding.

[0089] ③ Straighten the "root-embracing-rock" structure so that all weight is concentrated on the root-embracing-rock portion. Be careful not to pull directly on the upper portion of the structure to prevent separation of the roots and the rock. Use another sling to apply pressure to the rock above the center of gravity and with fewer roots. Use a 220 excavator to slowly and evenly pull the sling upward. Use the crane boom to coordinate with the excavator's diagonal pull, slowly lowering the soil ball to the designated position in the planting hole until the "root-embracing-rock" structure is in place.

[0090] ④ After the planting depth and viewing angle are no longer adjusted, the hemp rope, wire net, geotextile and other packaging materials used to wrap the soil ball are removed layer by layer from bottom to top along with the filling soil.

[0091] ⑤ Place four ventilation tubes symmetrically along the length and width of the soil ball, close to the sides, to increase air and water permeability, making it easier to monitor root dryness and wetness and to pump out water in a timely manner. Manually backfill the improved planting soil in layers and tamp it down.

[0092] Step 7, support and fixation: After the landfill is completed, support the large root-lifted stone trees. After the support is fixed, immediately water them to fix the roots;

[0093] Support: The support position of the "tree roots hugging rocks" is different from that of conventional seedlings. If it acts directly on the upper part, it will easily cause the roots to separate from the stones. Therefore, the support position is selected at the lower position, 1 / 2 of the overall height.

[0094] Watering: After the support is fixed, water the roots immediately.

[0095] ① For rooting, the first time you water the tree, it must be sufficient and thorough to ensure that the soil around the "roots hugging the rock" does not sink or crack.

[0096] ② During watering, you should observe in real time whether the "tree roots hugging the rock" are tilted and correct it in time.

[0097] ③ After watering thoroughly, the excavator first unloads the force evenly and slowly and removes the slings; the crane then unloads the force evenly and slowly, checks the force condition of the support, and removes the slings after confirming safety.

[0098] ④ A certain amount of rejuvenation agent can be added to the rooting water, such as 20,000 times of "Bihu" + 1,000 times of propiconazole + 500 times of Bacillus subtilis + 500 times of Bacillus amyloliquefaciens, spray first and then irrigate with small amounts of water.

[0099] Post-maintenance

[0100] During the early stages of transplanting a "root boulder" or during hot, dry seasons, regularly spray the crown with water to reduce evaporation. Newly transplanted "root boulder" trees are less cold-resistant, so wrap the trunk and branches tightly with straw rope or cold-weather cloth during winter, gradually removing them as temperatures rise. Add sphagnum moss to the gaps between the roots and the rocks to further increase root moisture.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and not to limit it; although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the application can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the present application, they should all be included in the scope of the technical solution requested for protection in this application.

Claims

1. A construction method for transplanting large root-lifted stone trees, characterized in that: The method comprises the following steps: Step 1: Pre-transplantation treatment: According to the size of the "roots hugging the rocks", support and root reduction treatment should be performed on the large root-lifted and rock-attached trees to be transplanted; Step 2: Excavation of the soil ball: While avoiding damaging the fibrous roots, the root ball of the large root-raising stone tree is completely excavated from the ground, and the excavated root ball is wrapped; Step 3, hoisting: Through force analysis and trial lifting, find the center of gravity and hoist the large root-lifted tree onto the transport vehicle; Step 4: Transportation: Transport the large root-lifted stone trees to be transplanted to the designated planting location; Step 5: Pre-planting preparation: Prune branches and dig a planting hole that is the size of the root ball of the large root-lifted rock tree to be transplanted; Step 6, Planting of Seedlings: Hoist the large root-lifted stone tree to be transplanted above the planting hole, adjust the orientation and slowly lower the large root-lifted stone tree to be transplanted into the planting hole, then adjust the center of gravity so that the weight of the large root-lifted stone tree is completely concentrated on the part where the roots are wrapped around the stone, and then fill the planting hole; Step 7, support and fixation: After the landfill is completed, support the large-scale root-attached stone trees. After the support is fixed, water them immediately to help them take root.

2. A construction method for transplanting large root-lifted stone trees according to claim 1, characterized in that: In step 1, the method for supporting and reducing the roots of the transplanted large root-lifted rock-attached trees includes the following steps: Step 11, Support: Depending on the size and growth environment of the "root-hanging rock", choose a sturdy wood or metal material as a support rod. The diameter of the support rod should be 2-3cm, and the length of the support rod should be half the overall height of the large root-hanging rock tree. The angle between the support rod and the ground should be 45 degrees. Step 12, root reduction: At least three months before the large-scale root-attached stone trees are ready for transplantation, their roots are cut off. The root cutting position is 30 cm along the outer diameter of the stone and the fibrous root. A working trench with a width of 50 to 70 cm is excavated downward in a circular manner. The roots are cut off and backfilled with improved soil. The components of the improved soil are, by weight, 35%-45% planting soil, 8%-12% perlite, 3%-7% vermiculite, 25%-35% weathered rock, 8%-12% peat soil, and 3%-7% organic fertilizer.

3. A construction method for transplanting large root-lifted stone trees according to claim 2, characterized in that: In step 2, the specific method of soil ball excavation includes the following steps: Step 21: When the transplanting time is in the dry season, since the soil moisture content is low, it is necessary to water it thoroughly 3 days before digging; Step 22: Dig at the location of the severed roots to avoid damaging the newly formed fibrous roots: First, dig a trench vertically downwards, 50 cm wide and 80 cm deep, and then remove excess soil at a 75-degree angle downwards along the soil ball. The root wounds severed during the digging process should be sharp and flush, without cracks. Apply wound healing agent in a timely manner, and ensure that the soil ball is excavated within 4 hours. Step 23, wrap a layer of geotextile on the excavated soil ball, and make the geotextile fit tightly with the soil ball and stones, then cover it with a layer of black sun-proof net, and then use steel wire rope to make a mesh binding around the sun-proof net, and then use hemp rope to tighten the loose parts between the steel wire ropes to make the binding firm.

4. A construction method for transplanting large root-lifted stone trees according to claim 3, characterized in that: Dilute the transpiration inhibitor 500-1000 times with water. Before wrapping the geotextile, spray the root system and crown evenly with the diluted transpiration inhibitor.

5. A construction method for transplanting large root-lifted and stone-attached trees according to claim 1, characterized in that: In step 3, the hoisting method specifically includes the following steps: Step 31, lifting: After finding the center of gravity, use rocks or tree trunks as lifting points, two-point or three-point lifting, and lift it above the car; Step 32, Preparation before loading: Adjust the direction of large root-lifted stone trees so that the soil ball is close to the cab and the crown is facing the rear of the vehicle, so that the tree body is placed parallel to the length of the vehicle. Place soft materials on the contact surface between the tree and the vehicle and evenly raise it. Use folded soft pads 8-10 cm thick to cushion sharp edges and corners of stones and where plant roots are tied. Step 33, loading: tie 1-2 traction ropes to the lower roots of the large root-lifted stone tree, and manually assist in traction control to ensure smooth loading; Step 34, Covering: After loading is completed, cover with waterproof and breathable tarpaulin + shade net, and ensure ventilation.

6. A construction method for transplanting large root-lifted and stone-attached trees according to claim 3, characterized in that: In step 4, when transporting over long distances, the leaves are sprayed evenly and comprehensively with the diluted transpiration inhibitor every 4 hours, and the roots of large root-raising and stone-attached trees are sprayed with water every 2-4 hours.

7. The construction method for transplanting large root-lifted and stone-attached trees according to claim 1, characterized in that: In step 5, the pre-planting preparation specifically includes the following steps: Step 51: Prune off broken branches, dead branches, drooping branches, diseased and insect-infested branches, and branches that affect the shape of the tree, and apply wound healing agent to the incisions. The amount of pruning should not exceed 1 / 5 of the crown. Step 52: Determine the size of the planting hole based on the shape of the soil ball. Specifically, the hole should be 20-40 cm wider than the length and width of the soil ball, and 30-50 cm deeper than the height of the soil ball. The hole should be dug vertically and the diameters of the top and bottom should be the same. Step 53: Lay a drainage layer at the bottom of the planting hole. The drainage layer is constructed from bottom to top in the following order: non-woven fabric, 15 cm gravel, and non-woven fabric. The drainage layer is connected to the external drainage network.

8. A construction method for transplanting large root-lifted and stone-attached trees according to claim 2, characterized in that: In step 6, the planting hole is corrected and the drainage layer is checked for quality. After the drainage layer is confirmed to be qualified, soft materials are laid in the planting hole as a liner. After the center of gravity of the large root-lifting stone tree is adjusted, the hemp rope, steel wire rope, geotextile and sun-proof net wrapped around the soil ball are removed layer by layer from bottom to top as the height of the landfill soil rises during landfill. Four air-permeable tubes are placed symmetrically close to the side of the soil ball in the length and width directions. The improved soil is used as the landfill soil.

9. A construction method for transplanting large root-lifted and stone-attached trees according to claim 1, characterized in that: In step 7, water the roots until they are thoroughly watered, then evenly de-energize the excavator, remove the slings, evenly de-energize the crane, check the support conditions and confirm that they are safe before removing the slings, and spray a rejuvenation agent before watering the roots. The rejuvenation agent includes 20,000 times diluted Bihu, 1,000 times diluted tebuconazole, 500 times diluted Bacillus subtilis, and 500 times diluted Bacillus amyloliquefaciens.

10. A construction method for transplanting large root-lifted and stone-attached trees according to claim 1, characterized in that: In the early stage after transplantation of large-scale root-lifted rock-attached trees or in hot and dry seasons, spray the crown of the tree regularly; in winter, wrap the trunk and main branches tightly with straw ropes or cold-proof cloth, and gradually remove them after the temperature rises; add sphagnum moss in the gaps between the roots and the stones.

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