CN113892386A - Tree planting method in 'reverse pot bottom' form and breathable aqueduct for tree planting - Google Patents
Tree planting method in 'reverse pot bottom' form and breathable aqueduct for tree planting Download PDFInfo
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- CN113892386A CN113892386A CN202111153236.5A CN202111153236A CN113892386A CN 113892386 A CN113892386 A CN 113892386A CN 202111153236 A CN202111153236 A CN 202111153236A CN 113892386 A CN113892386 A CN 113892386A
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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
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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
- 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
Abstract
The invention discloses a tree planting method in a 'reverse pot bottom' form, which is mainly characterized in that a ventilating water guide pipe is arranged in a soil pit: filling a small amount of nutrient soil into the soil pit, placing the air-permeable water guide pipe in the soil pit in a U shape in a manner that two sides of the air-permeable water guide pipe are tightly attached to the wall of the soil pit and the bottom of the air-permeable water guide pipe is tightly attached to the nutrient soil, wherein two ends of the air-permeable water guide pipe are higher than the upper edge of the soil pit; backfilling bottom-supporting nutrient soil in a reverse pot bottom mode; then carrying out subsequent planting work; the air-permeable water guide pipe comprises a water-permeable and air-permeable wrapping layer on the outer layer, a hollow pipe on the inner layer, and a water-draining and air-permeable filler between the wrapping layer and the hollow pipe; the hollow pipe is a plastic hose with air holes on the pipe body and is coated with a coating layer for blocking the drainage and ventilation filler and silt. The method can ensure the drainage and ventilation effect and improve the survival rate of the arbor. The invention also discloses a breathable aqueduct for planting arbors.
Description
Technical Field
The invention belongs to the technical field of arbor field planting, and particularly relates to an arbor field planting method in a 'reverse pot bottom' form and a breathable aqueduct for arbor field planting.
Background
The arbor is an important content for ensuring the landscaping effect in the landscaping of the city and the countryside, and is also an important component of the greening of the city and the countryside. In the construction cost of landscape architecture, the purchase, planting and maintenance of trees are one of the main costs. Therefore, the survival rate of each arbor is ensured, the realization of the overall effect of the landscape is ensured, and the important content of controlling the cost of the landscape engineering is realized.
In the practical process, the main influencing factors of the planting survival rate of the nursery stock, particularly the arbor, come from the quality of the nursery stock and the planting method. On the basis of a planting method, the fixed value survival rate of the arbor is influenced mainly by the following two aspects:
1. the density of the covering soil is lower than that of the original soil during planting, so that the roots die due to water accumulation. The problem is mainly that the soil ball and the soil can not be tightly combined, the density of the soil in the tree pit is lower than the density of the soil around the tree pit, water accumulation is easy to generate, and the roots are soaked in water for a long time to die; in addition, pores are easy to appear on the contact surface of the root system and the soil, and plant nutrients are easy to lose from the pores, so that the trees planted in the fields are difficult to root.
2. The planting soil is deep soil, and after contacting with soil balls and root systems, the root systems can not root and die. This problem arises primarily from two aspects: firstly, soil balls are hardened, and root systems cannot grow rapidly and effectively; secondly, after the arbor is transplanted from the nursery, the root system is injured, and the root is difficult to grow because of the change of factors such as soil property and the like.
In order to solve the problems, in the planting process of the arbor, a planting method in a form of 'reverse pot bottom' is often adopted to ensure the survival rate of the nursery stock. The method comprises the following specific steps:
the first step is as follows: digging a soil pit; as shown in figure 1, a proper soil pit is dug according to the size of a soil ball of a planned planting arbor, the depth of the soil pit is that the height of the soil ball is deepened by 0.5 meter, and the radius of the soil pit is that the radius of the soil ball is widened by 0.2 meter. The second step is that: filling broken stones; as shown in figure 2, broken stones with the diameter of 3-5 mm are adopted to be paved on the bottom of a soil pit, and the paving thickness is 10-20 cm. The third step: backfilling bottom-up nutrient soil; as shown in figure 3, the original soil dug out by digging the tree pit is mixed with fertilizer and stirred evenly, half of the soil is filled into the pit and is cultivated into a dune shape in a 'reverse pot bottom' mode, the middle of the soil is about 50cm thick, and the periphery of the soil is about 30cm thick. The fourth step: placing a ventilation pipe; as shown in fig. 4, the air permeability tube is generally made of plastic drainage tubes of DN50, DN75 and DN 100; before the air permeability pipe is used, a pipe body needs to be drilled, the aperture is 0.5cm, and the distance between holes is about 5cm, so that air permeability and drainage are facilitated; 3-4 ventilating pipes are needed to be used in each tree pit; the length of the air permeability pipe is determined by that the pipe tail directly props against the bottom of the soil ball, and the pipe head is 50cm higher than the top surface of the soil ball. The fifth step: lifting the arbor and arranging a support; as shown in fig. 5, the arbor is transported to the excavated planting hole and supported and fixed according to the design requirements. And a sixth step: backfilling core soil; filling core soil between the soil ball and the tree pit, slightly tamping the core soil until the filling soil is slightly higher than the ground surface, and slightly lifting the nursery stock up and down in the tamping process to ensure that the root system is closely contacted with the soil. The seventh step: enclosing a soil weir and pouring root fixing water; and after soil returning is finished, building a watering soil weir with the height of 10-15 cm at the periphery of the diameter of the planting hole, and immediately watering root water after the water weir is surrounded.
However, in the actual construction process, the existing planting method in the form of 'reverse pot bottom' still has the following two problems to reduce the survival rate of planted trees:
(1) because the maintenance in earlier stage after arbor field planting is more frequent, the number of times of manual watering is more, and the bed pad nutrient soil of backfilling is comparatively loose, leads to that tiny ingredient in the nutrient soil is brought into rubble drainage blanket by rivers in the in-process of watering, blocks up the hole on rubble drainage blanket, leads to the drainage efficiency of rubble drainage blanket to reduce and produce ponding.
(2) Because the permeability cell inserts in bedding nutrient soil to one side, the partial weight of arbor soil ball and arbor itself can be ballasted on the permeability cell, leads to the permeability cell to take place to warp and damage easily under the long-term effect, leads to the ventilation effect to worsen.
Disclosure of Invention
The invention aims to provide a planting method of trees in a 'reverse pot bottom' mode, which can ensure drainage efficiency, prevent water accumulation at the roots of the trees and ensure ventilation effect, thereby improving the survival rate of the trees.
The second purpose of the invention is to provide the air guide pipe for the permanent planting of the trees, which ensures the drainage efficiency and the air permeability of the roots of the trees.
In order to achieve the first object, the invention adopts the technical scheme that:
a planting method of arbor in the form of 'reverse pot bottom' comprises the following steps:
(1) digging a soil pit: excavating a soil pit according to the size of a soil ball of a tree;
(2) backfilling nutrient soil and arranging a breathable water guide pipe: mixing the original soil dug out from the dug soil pit with a fertilizer to obtain nutrient soil, and filling a small amount of nutrient soil into the soil pit to form a pot shape with a lower middle part and two higher sides as deep nutrient soil; then, the ventilating water guide pipe is placed in the soil pit in a U shape in a mode that two sides of the ventilating water guide pipe are tightly attached to the wall of the soil pit and the bottom of the ventilating water guide pipe is tightly attached to deep nutrient soil, and two ends of the ventilating water guide pipe are higher than the upper edge of the soil pit; backfilling the nutrient soil layer by layer, and tamping each layer to make the nutrient soil at the bottom of the mat in a hilly shape with high middle and low periphery;
the air-permeable water guide pipe comprises a wrapping layer positioned on the outer layer, a hollow pipe positioned on the inner layer and a drainage air-permeable filler between the wrapping layer and the hollow pipe; the hollow pipe is a plastic hose with air holes uniformly distributed on the pipe body, and the pipe body is coated with a coating layer for blocking the drainage and ventilation filler and the silt; the drainage breathable filler is a loose material with good stability, water permeability and air permeability; the wrapping layer is a water-permeable and air-permeable cloth layer which can prevent silt from entering;
(3) lifting the arbor into the soil pit, supporting and fixing the arbor, and backfilling the core soil;
(4) and (4) building a watering soil weir at the periphery of the planting hole of the arbor, then watering root fixing water, and performing daily maintenance in the later stage.
Aiming at the problem of reducing the survival rate of fixedly planted trees in the prior art, the invention improves the tree fixedly planting method in the form of 'reverse pot bottom', and the survival rate can be improved by adopting the ventilating drain pipe to fixedly plant trees through continuous practice and test.
The air-permeable water guide pipe can effectively realize the purposes of drainage and air permeability by utilizing the hollow pipe and the drainage air-permeable filler, the air-permeable water guide pipe is arranged between the deep-layer nutrient soil and the bedding nutrient soil in a U shape, the existing gravel layer and the air-permeable pipe are effectively replaced, and each air-permeable water guide pipe is arranged in a U shape and can be converted into two air-permeable pipes in the prior art. The hollow pipe is used as a vent pipe, so that the water drainage and ventilation in the ventilating water guide pipe can be kept smooth, and the unsmooth water flowing caused by air blockage in the water drainage and ventilation filler when water in the pipeline of the ventilating water guide pipe flows downwards is avoided; the drainage breathable filler has the drainage function, can play a role in slow ventilation and rainwater buffering in severe precipitation, and can effectively permeate into the surrounding soil while rainwater is drained at the highest speed; the wrapping layer of ventilative aqueduct can completely cut off soil grain impurity etc. and get into inside, ensures that hollow tube and drainage ventilative filler play drainage ventilation effect for a long time, reduces the condition that drainage ventilative passage is blockked up to appear, can effectively reduce the death that field planting arbor leads to because of ponding and gas permeability scheduling problem.
The hollow pipe in the breathable water guide pipe adopts a soft plastic pipe, and the pressure resistance and the deformability of the breathable water guide pipe are better than those of a rigid pipe; moreover, as the air-permeable water guide pipe is placed in the soil pit in a U shape, the weight of the arbor soil ball and part of the weight of the arbor are uniformly ballasted on the upper part of the air-permeable water guide pipe, the situations that the load is generated from an oblique direction and the single-point load is large in the prior art can not occur, and the deformation and the damage of the hollow pipe are reduced; in addition, the pot-shaped deep nutrient soil at the bottom of the breathable water guide pipe can prevent the breathable water guide pipe from being bent too strongly in the placing process, so that the breathable water guide pipe is prevented from being pulled and broken.
The proposal adopted by the invention is as follows:
the diameter of the breathable water guide pipe is 10-15 cm, the size can ensure sufficient breathable effect, and construction in the field planting process is facilitated.
The wrapping layer is made of polyester cotton core-spun yarn material, the material takes polyester filament as core yarn and wraps cotton fiber, and has the advantages of high strength, wear resistance, moderate elongation, good acid resistance, good alkali resistance at normal temperature, microorganism resistance, good light resistance, free expansion and contraction, good air and water permeability, low hygroscopicity, less strength reduction in long-term wet environment and the like, so that the hollow pipe and the drainage air-permeable filling can stably play a role in drainage and air permeability for a long time.
The hollow pipe is made of acid and alkali resistant plastics, the diameter of the hollow pipe is 5cm, the aperture of the air holes in the pipe body is 0.2-0.3 cm, and the hole distance is 1 cm. Because the tube body of the hollow tube is provided with the coating layer for blocking silt, the blockage is avoided, and the water and air permeable effect is ensured, so that the invention selects the air holes with smaller apertures and denser holes, thereby further improving the water and air permeable effect.
The coating layer is a non-woven fabric with 2-3 layers.
The drainage breathable filler is perlite.
The middle of the deep nutrient soil is 10cm high, the periphery of the deep nutrient soil is raised, and the deep nutrient soil is a circular arc chamfer with the radius of 30 cm.
The beam openings of the wrapping layers are bound to the positions 5-10 cm below the end heads of the two ends of the hollow pipe; the beam opening of the wrapping layer is 30cm higher than the upper edge of the soil pit.
One or more air-permeable water guide pipes can be arranged in the soil pit, so that the air-permeable and water-draining effects are ensured.
In order to achieve the second object, the invention adopts the technical scheme that:
a breathable water guide pipe for arbor planting comprises a wrapping layer positioned on an outer layer, a hollow pipe positioned on an inner layer and a drainage breathable filler between the wrapping layer and the hollow pipe, wherein the beam openings of the wrapping layer are tightly bound at two ends of the hollow pipe; the hollow pipe is a plastic hose with air holes uniformly distributed on the pipe body, and the pipe body of the hollow pipe is coated with a coating layer for blocking drainage and ventilation filler and soil; the drainage breathable filler is a loose material with good stability, water permeability and air permeability; the wrapping layer is a cloth layer which can prevent soil from entering and is permeable and breathable.
The diameter of the air-permeable water guide pipe is 10-15 cm; the beam openings of the wrapping layers are bound to the positions 5-10 cm below the end heads of the two ends of the hollow pipe.
The hollow pipe is made of acid and alkali resistant plastics, the aperture of the air holes in the pipe body is 0.2-0.3 cm, and the hole distance is 1 cm.
The coating layer is a non-woven fabric with 2-3 layers.
The drainage breathable filler is perlite.
Compared with the prior art, the invention has the following beneficial effects:
the method of the invention adopts the ventilating water guide pipe to replace the prior crushed stone layer and the ventilating pipe to realize the purposes of water drainage and ventilation. The hollow pipe is used as a vent pipe to keep smooth drainage and ventilation in the breathable water guide pipe; the drainage breathable filler can play a role in drainage, slow ventilation and rainwater buffering during severe precipitation; the wrapping layer of ventilative aqueduct can completely cut off soil grain impurity etc. and get into inside, ensures that hollow tube and drainage ventilative filler play drainage ventilation effect for a long time, reduces the condition that drainage ventilative passage is blockked up to appear, can effectively reduce the death that field planting arbor leads to because of ponding and gas permeability scheduling problem.
The hollow pipe in the breathable water guide pipe adopts a soft plastic pipe, and the pressure resistance and the deformability of the breathable water guide pipe are better than those of a rigid pipe; in addition, the method of the invention places the air-permeable aqueduct in a U shape in the soil pit, so that the weight of the soil ball of the arbor and the part of the weight of the arbor are evenly ballasted on the upper part of the air-permeable aqueduct, thereby reducing the deformation and damage of the hollow pipe.
The breathable aqueduct for planting the arbor is simple to manufacture, the process is not complex, the used materials are common materials in construction, the construction difficulty is not increased, the method for placing the breathable aqueduct is simple, and the planting process is simplified.
Drawings
FIG. 1 is a schematic view of a soil pit of a prior art "reverse bottom" type planting method;
FIG. 2 is a schematic diagram of a prior art "reverse bottom" type planting method after filling crushed stones;
FIG. 3 is a schematic diagram of a prior art 'reverse bottom' type planting method after backfilling bottom-up nutrient soil;
FIG. 4 is a schematic diagram of a prior art "reverse bottom" type planting method after placement of a gas permeable tube;
FIG. 5 is a schematic diagram of a prior art "reverse bottom" type planting method after placement of a tree and support;
FIG. 6 is an overall schematic view of the air permeable aqueduct of the present invention;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
fig. 8 is an enlarged view of a partial structure of the air guide duct of fig. 6;
FIG. 9 is a schematic view of the present invention after the deep nutrient soil is filled and the air permeable aqueduct is placed;
FIG. 10 is a breathable manifold profile for the method of the present invention;
FIG. 11 is a schematic view of the method of the present invention after filling the bedding nutrient soil;
FIG. 12 is a schematic representation of the method of the invention after permanent planting of trees.
Reference numerals: 1-a soil pit; 2-a crushed stone layer; 3-bedding nutrient soil; 4-ventilating pipe; 5-a support frame; 6-subsoil; 7-a breathable water conduit; 8-a wrapping layer; 9-hollow pipe; 10-a water-draining breathable filler; 11-a coating layer; 12-deep layer nutrient soil; 13-bundle mouth.
Detailed Description
The following examples are only for illustrating the present invention, and the scope of the present invention is not limited to only the following examples. The objectives of the present invention can be achieved by the ordinary skilled person in the art according to the disclosure of the present invention and the ranges of the parameters.
As shown in fig. 6 to 8, the diameter of the breathable aqueduct 7 for arbor field planting is 15cm, and the diameter range of 10 to 15cm can be adopted according to actual conditions; the drainage and ventilation filler comprises a wrapping layer 8 positioned on the outer layer, a hollow pipe 9 positioned on the inner layer and a drainage and ventilation filler 10 between the wrapping layer 8 and the hollow pipe 9; the tying openings 13 of the wrapping layer 8 are tightly tied to the positions 5-10 cm below the end heads of the two ends of the hollow pipe 9, namely the areas where the end heads of the two ends of the hollow pipe 9 are higher than the drainage breathable filler.
The hollow pipe 9 is an acid and alkali resistant plastic hose with the diameter of 5cm, air holes with the aperture of 0.2-0.3 cm and the hole pitch of 1cm are uniformly distributed on the pipe body, and 2-3 layers of non-woven fabrics are coated on the pipe body to serve as a coating layer 11; the drainage and air-permeable filler 10 is a loose material with good stability, water permeability and air permeability, and the most common perlite with air permeability, water permeability and light weight and stability is adopted in the embodiment; the wrapping layer 8 is a cloth layer made of polyester cotton core-spun yarn material.
The arbor planting method in the form of 'reverse pot bottom' of the invention comprises the following steps:
(1) digging a soil pit:
the depth of the soil pit is deepened by 0.5m based on the height of the soil ball, and the radius of the soil pit is widened by 0.2m based on the radius of the soil ball.
(2) Backfilling nutrient soil and arranging a breathable water guide pipe:
as shown in fig. 9-10, the original soil dug out by digging tree pits is mixed with fertilizer (generally, thoroughly cooked organic fertilizer) and stirred uniformly, and then the deep bottom nutrient soil is backfilled, wherein the middle of the deep bottom nutrient soil is 10cm high, the periphery of the deep bottom nutrient soil is raised, and the deep bottom nutrient soil is a circular arc chamfer with the radius of 30 cm; then, two air-permeable water guiding pipes of the above specific embodiment are placed in the soil pit in a crisscross manner, the number and the positions of the air-permeable water guiding pipes can be determined according to actual conditions, and the specific operation is as follows: placing the air-permeable water guide pipe in the soil pit in a U shape in a manner that two sides of the air-permeable water guide pipe are tightly attached to the wall of the soil pit and the bottom of the air-permeable water guide pipe is tightly attached to deep nutrient soil, and ensuring that a beam opening of the wrapping layer is 30cm higher than the upper edge of the soil pit; the invention adopts the breathable water guide pipe, so that the whole breathable effect is better, the protruding height of the breathable water guide pipe can be reduced, and the landscape effect is improved.
Then, as shown in fig. 11, the nutrient soil is backfilled layer by layer, each layer is tamped, so that the bottom-supporting nutrient soil is finally cultivated into a hill shape with the middle height of about 50cm and the peripheral height of about 30cm, namely, a shape of 'reverse pot bottom', and the backfilled bottom-supporting nutrient soil is tightly combined with the air-permeable water guide pipe.
(3) Handling arbor sets up the support frame:
and hoisting the trees to be fixedly planted in the soil pits by using mechanical equipment or manpower, and fixing by using a support frame according to the specification and design requirements.
(4) Backfilling core soil:
backfilling core soil into the soil pit, slightly tamping the core soil until the backfilled soil is slightly higher than the ground surface, and slightly lifting the nursery stock up and down in the tamping process to ensure that the root system is closely contacted with the soil; the subsoil is selected from planting soil with good quality, or raw soil which is used for screening out large soil blocks, stones, garbage and the like and mixing the impurities into completely decomposed organic fertilizer.
(5) Enclosing a soil weir, pouring root fixing water and performing later-stage daily maintenance:
after completion of backfilling the core soil, as shown in fig. 12; then, building a watering soil weir with the height of 10-15 cm on the periphery of the diameter of the planting hole, immediately watering root-fixing water after the water weir is surrounded, slowly watering, and thoroughly watering; and later maintenance is carried out according to the construction organization design.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The above-described embodiments of the present invention are to be considered in all respects as illustrative and not restrictive. Therefore, any minor modifications, equivalent changes and modifications to the above embodiments according to the spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A planting method of arbor in the form of 'reverse pot bottom', which is characterized by comprising the following steps:
(1) digging a soil pit: excavating a soil pit according to the size of a soil ball of a tree;
(2) backfilling nutrient soil and arranging a breathable water guide pipe: mixing the original soil dug out from the dug soil pit with a fertilizer to obtain nutrient soil, and filling a small amount of nutrient soil into the soil pit to form a pot shape with a lower middle part and two higher sides as deep nutrient soil; then, the ventilating water guide pipe is placed in the soil pit in a U shape in a mode that two sides of the ventilating water guide pipe are tightly attached to the wall of the soil pit and the bottom of the ventilating water guide pipe is tightly attached to deep nutrient soil, and two ends of the ventilating water guide pipe are higher than the upper edge of the soil pit; backfilling the nutrient soil layer by layer, and tamping each layer to make the nutrient soil at the bottom of the mat in a hilly shape with high middle and low periphery;
the air-permeable water guide pipe comprises a wrapping layer positioned on the outer layer, a hollow pipe positioned on the inner layer and a drainage air-permeable filler between the wrapping layer and the hollow pipe; the hollow pipe is a plastic hose with air holes uniformly distributed on the pipe body, and the hollow pipe body is coated with a coating layer for blocking the drainage and ventilation filler and the silt; the wrapping layer is a water-permeable and air-permeable cloth layer which can prevent silt from entering;
(3) lifting the arbor into the soil pit, supporting and fixing the arbor, and backfilling the core soil;
(4) and (4) building a watering soil weir at the periphery of the planting hole of the arbor, then watering root fixing water, and performing daily maintenance in the later stage.
2. The arbor planting method in the form of 'anti-pot bottom' according to claim 1, wherein the diameter of the air-permeable aqueduct is 10-15 cm.
3. The arbor field planting method in the form of 'reverse pot bottom' according to claim 2, characterized in that the wrapping layer is made of polyester cotton core-spun yarn material, and the bundle openings of the wrapping layer are bound at positions 5-10 cm below the ends of the two ends of the hollow pipe.
4. The planting method of trees in the form of 'reverse pot bottom' as claimed in claim 2 or 3, wherein the hollow pipe is made of acid and alkali resistant plastic, the diameter of the hollow pipe is 5cm, the aperture of the air holes on the pipe body is 0.2-0.3 cm, and the hole pitch is 1 cm.
5. The arbor planting method in the form of 'reverse pot bottom' as claimed in claim 1, wherein the coating layer is 2-3 layers of non-woven fabric.
6. The method of claim 1, wherein the drainage air-permeable filler is perlite.
7. The method of claim 1, wherein the deep nutrient soil is 10cm high in the middle, elevated at the periphery, and rounded off with a radius of 30 cm.
8. The method of claim 3, wherein the opening of the wrapping layer is 30cm higher than the upper edge of the pit.
9. A breathable water guide pipe for arbor field planting is characterized by comprising a wrapping layer positioned on an outer layer, a hollow pipe positioned on an inner layer and a drainage breathable filler between the wrapping layer and the hollow pipe, wherein the tying openings of the wrapping layer are tightly tied at two ends of the hollow pipe; the hollow pipe is a plastic hose with air holes uniformly distributed on the pipe body, and the pipe body of the hollow pipe is coated with a coating layer for blocking drainage and ventilation filler and soil; the wrapping layer is a cloth layer which can prevent silt from entering and is permeable and breathable.
10. The air-permeable aqueduct for arbor field planting according to claim 9, wherein the diameter of the air-permeable aqueduct is 10-15 cm; the beam openings of the wrapping layers are bound to the positions 5-10 cm below the end heads of the two ends of the hollow pipe; the hollow pipe is made of acid and alkali resistant plastic, the aperture of the air holes in the pipe body is 0.2-0.3 cm, and the hole pitch is 1 cm; the coating layer is 2-3 layers of non-woven fabrics; the drainage breathable filler is perlite.
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| CN114223454A (en) * | 2021-12-20 | 2022-03-25 | 蒙阴县林业局 | Seedling planting device and method for barren mountain area |
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