CN112514590A - Drainage transformation method for soil layer of cohesive soil before tree planting - Google Patents
Drainage transformation method for soil layer of cohesive soil before tree planting Download PDFInfo
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- 239000002689 soil Substances 0.000 title claims abstract description 148
- 238000011426 transformation method Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims description 19
- 238000002715 modification method Methods 0.000 claims 7
- 230000035699 permeability Effects 0.000 abstract description 7
- 230000035764 nutrition Effects 0.000 abstract description 2
- 235000016709 nutrition Nutrition 0.000 abstract description 2
- 230000002262 irrigation Effects 0.000 description 17
- 238000003973 irrigation Methods 0.000 description 17
- 239000011159 matrix material Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 12
- 210000000481 breast Anatomy 0.000 description 8
- 238000005507 spraying Methods 0.000 description 8
- 230000004083 survival effect Effects 0.000 description 7
- 235000005087 Malus prunifolia Nutrition 0.000 description 4
- 244000070406 Malus silvestris Species 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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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
- 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
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- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
- E02B11/005—Drainage conduits
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- Environmental Sciences (AREA)
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- Cultivation Of Plants (AREA)
Abstract
The invention discloses a drainage reconstruction method of a soil layer before planting trees in cohesive soil, which comprises the following steps: (1) digging a plurality of planting pits on the surface of the cohesive soil; (2) laying hidden pipes which are flush with the bottoms of the planting pits on one sides of the planting pits, wherein a plurality of through holes are formed in one sides of the hidden pipes facing the planting pits, palms wrap the through holes, and water filtering materials are laid between the palms and the planting pits; (3) and arranging loam in the planting nest. The method of the invention can improve the air permeability and the nutrition condition of the viscous soil, and fundamentally solves the loss caused by soil waterlogging after the trees are planted.
Description
Technical Field
The invention relates to the technical field of soil improvement, in particular to a drainage reconstruction method for a soil layer before planting of cohesive soil.
Background
Along with the development of society, in urban construction process, afforestation is more and more taken more and more by people, because some region soil stickness is too strong, the proportion that clay content accounts for in the cohesive soil is very big, and the granule is thin, and the fine pore is many between the granule, and the coarse pore leads to soil structure, permeability poor, and the poor gas exchange that can reduce of air permeability of soil, therefore trees grow badly, and serious can make the tissue die by suffocation even. Because the soil in the tree planting pit is excavated and backfilled to cause the difference of the firmness of the soil inside and outside the pit, the root system of the tree can not penetrate the firm soil layer outside the pit to form abnormal distribution around the wall of the tree planting pit, and the growth condition of the tree is also worsened. In addition, after irrigation or rainfall, the vertical leakage and horizontal diffusion of water in the pit are blocked, so that water is accumulated in the pit, and the tree is rotten to kill the root. Meanwhile, the extension of the root system of the tree is hindered along with the hardening of the soil and the increase of the firmness.
Therefore, the landscape effect of landscaping planting is closely related to the characteristics of soil, and the improvement of the soil characteristics is very important for obtaining good planting effect.
Disclosure of Invention
The invention provides a drainage transformation method for a soil layer before planting of cohesive soil, which aims to provide a good environment for the growth and development of trees and enhance the growth vigor of the trees by improving the air permeability and water permeability of the soil and reducing the soil hardening degree.
In order to solve the technical problems, the invention adopts a technical scheme that:
the method for improving the drainage of the soil layer before planting the trees in the cohesive soil comprises the following steps:
(1) digging a plurality of planting pits on the surface of the cohesive soil;
(2) laying hidden pipes which are flush with the bottoms of the planting pits on one sides of the planting pits, wherein a plurality of through holes are formed in one sides of the hidden pipes facing the planting pits, palms wrap the through holes, and water filtering materials are laid between the palms and the planting pits;
(3) and arranging loam in the planting nest.
The invention transversely buries the hidden pipe with the through hole at the bottom of the planting nest, when raining or irrigating, when the gravity water in the soil layer is too much, the large pores of the soil layer are communicated with the hidden pipe without obstacles, under the condition of ensuring the sufficient water needed by the trees, the redundant water in the planting nest is smoothly discharged, and the waterlogging of the root system is prevented; further, the inventor finds that wrapping the concealed pipe with the palm not only can prevent the through holes on the concealed pipe from being blocked by the viscous soil, but also can improve the water and air permeability of the soil, and the palm can be used as a fertilizer for plants after being decomposed for a long time.
The planting medium of the planting nest is loam, so that certain nutrition can be provided for plants, the ventilation and drainage performance is good, and the growth vigor of trees can be increased.
In a specific embodiment of the present invention, the concealed conduit is laid in a manner that: the inclination is 2-10 degrees, preferably 4-7 degrees and more preferably 4 degrees when the brick is laid; the concealed conduit is laid obliquely outwards, so that redundant water can be fully discharged out of the plantation.
In a specific embodiment of the invention, the diameter of the concealed pipe is 6-10 cm, and preferably 8 cm.
In a specific embodiment of the invention, the diameter of the through hole is 1-5 cm, preferably 3-5 cm;
in a specific embodiment of the invention, the number of the wrapping layers of the palm is 2-6, and preferably 4.
In a particular embodiment of the present invention,
the laying thickness of the water filtering material is 6-15 times, preferably 10 times of the diameter of the through hole;
further, the paving width of the coarse sand gravel layer is the width from the palm to the tree planting nest;
still further, the water-filtering material is coarse sand gravel.
The water filtering layer formed by the coarse sand gravel layer can temporarily play a certain role in storing the water infiltrated into the soil layer to prolong the permeation time of surface runoff to deep soil, and can play a role in draining by combining a concealed pipe.
In the embodiment of the invention, when the number of the through holes on one side of the concealed conduit is more than 1, the distance between the through holes is 10-26 cm, preferably 16-20 cm.
In the embodiment of the invention, when the hidden pipes are positioned between the two planting nests, the hidden pipes are staggered by 5-13 cm towards the through holes on the two sides of the planting nests, and are preferably staggered by 8-10 cm.
In the embodiment of the invention, the paving depth of the loam is 20-50 cm, preferably 25-40 cm.
In a specific embodiment of the invention, the loam is selected from one or more of sandy soil, light soil, medium soil and heavy soil.
In the specific embodiment of the present invention, after the tree is planted, the method further comprises a step of managing and protecting the tree, which specifically comprises: wrapping the water retaining belt on the trunk, covering the tree crown with a sunshade net, carrying out film uncovering irrigation on the planting pit, recovering the mulching film after irrigation, and spraying water on the tree crown until the tree survives.
The invention has the following beneficial effects:
(1) the method can solve the problem of water accumulation in the viscous soil planting nest in rainy season and improve the growth condition of trees.
(2) The method can improve the drainage and air permeability of the cohesive soil, so that the tree root system can better penetrate through the solid cohesive soil layer, and the growth vigor of the trees is enhanced.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Based on the embodiments of the present invention, other embodiments obtained by a person of ordinary skill in the art without any creative effort belong to the protection scope of the present invention.
In the embodiment of the invention, the test nursery stock is treated by setting a test by using a crabapple tree planted in 2018 and 1 month, and the breast diameter is 6-8 cm as a target tree species.
Example 1
(1) Positioning and excavating the tree planting pits: and determining the row pit distance of 2m multiplied by 2m by using a stay wire according to the specification required by the forest establishment of the trees, wherein the diameter of the dug pit is 40cm larger than the diameter of the soil ball and the depth is 25cm larger than the thickness of the soil ball according to the size of the trees and the size of the soil ball.
(2) Ditching and laying concealed pipes among rows of trees: and laying a concealed pipe with the diameter of 8cm between every two adjacent rows, wherein the position of the concealed pipe is flush with the bottom of the nest and is inclined at 4 degrees.
(3) Chiseling a water outlet: through holes with the diameter of 3cm are drilled on the left side and the right side of the concealed pipe which is opposite to the root system of the tree, and the through holes on the left side and the right side are arranged in a staggered mode by 10 cm.
(4) Wrapping and cushioning the palm: wrapping 4 layers of palms at the through hole, and bundling with a palm rope.
(5) Laying a coarse sand gravel layer: the thickness of the coarse sand gravel layer is 10 times of the diameter of the through hole, so that water can be conveniently filtered, and the coarse sand gravel layer extends to the tree planting nest.
(6) The quality of the planting nest is improved: according to the requirements of tree planting, the soil texture of the planting nest is configured into light soil planting matrix soil.
(7) Planting trees: firstly, filling 25cm thick planting matrix soil in a pit, placing a tree soil ball in the pit and centering the tree soil ball, wherein the height of the soil ball is flush with the original soil surface, righting a trunk, filling the periphery with the planting matrix soil with improved texture, tamping, watering root fixing water until the root fixing water is fully wet, covering a mulching film for water retention, and building a tree support frame.
(8) Managing and protecting before survival: wrapping the tree trunk with a water-retaining tape; in the seasons of high temperature and strong sunshine, the tree crown is covered with a sunshade net; according to the soil humidity and the demand of the overground part, uncovering the film in the pit for irrigation, recovering the ground film after irrigation, or spraying necessary crown water until the tree survives.
Example 2
(1) Positioning and excavating the tree planting pits: and determining the row pit distance of 2m multiplied by 2m by using a stay wire according to the specification required by the forest establishment of the trees, wherein the diameter of the dug pit is 40cm larger than the diameter of the soil ball and the depth is 25cm larger than the thickness of the soil ball according to the size of the trees and the size of the soil ball.
(2) Ditching and laying concealed pipes among rows of trees: a concealed pipe with the diameter of 6cm is laid between every two adjacent rows, the position of the concealed pipe is flush with the bottom of the nest, and the concealed pipe is inclined according to 10 degrees.
(3) Chiseling a water outlet: through holes with the diameter of 5cm are drilled on the left side and the right side of the concealed pipe which is opposite to the root system of the tree, and the through holes on the left side and the right side are arranged in a staggered mode by 12 cm.
(4) Wrapping and cushioning the palm: wrapping 2 layers of palms at the through hole, and bundling with a palm rope.
(5) Laying a coarse sand gravel layer: the thickness of the coarse sand gravel layer is 6 times of the diameter of the through hole, so that water can be conveniently filtered, and the coarse sand gravel layer extends to the tree planting nest.
(6) The quality of the planting nest is improved: according to the requirements of tree planting, the soil texture of the planting nest is configured into the planting substrate soil with heavy soil.
(7) Planting trees: firstly, filling 40cm thick planting matrix soil in a pit, placing a tree soil ball in the pit and centering the tree soil ball, wherein the height of the soil ball is flush with the original soil surface, righting a trunk, filling the periphery with the planting matrix soil with improved texture, tamping, watering root water until the root water is fully wet, covering a mulching film for retaining water, and building a tree support frame.
(8) Managing and protecting before survival: wrapping the tree trunk with a water-retaining tape; in the seasons of high temperature and strong sunshine, the tree crown is covered with a sunshade net; according to the soil humidity and the demand of the overground part, uncovering the film in the pit for irrigation, recovering the ground film after irrigation, or spraying necessary crown water until the tree survives.
Example 3
(1) Positioning and excavating the tree planting pits: and determining the row pit distance of 2m multiplied by 2m by using a stay wire according to the specification required by the forest establishment of the trees, wherein the diameter of the dug pit is 40cm larger than the diameter of the soil ball and the depth is 25cm larger than the thickness of the soil ball according to the size of the trees and the size of the soil ball.
(2) Ditching and laying concealed pipes among rows of trees: a concealed pipe with the diameter of 15cm is laid between every two adjacent rows, the position of the concealed pipe is flush with the bottom of the nest, and the concealed pipe is inclined according to 7 degrees.
(3) Chiseling a water outlet: through holes with the diameter of 1cm are drilled on the left side and the right side of the concealed pipe which is opposite to the root system of the tree, and the through holes on the left side and the right side are staggered by 8 cm.
(4) Wrapping and cushioning the palm: wrapping 6 layers of palms at the through hole, and bundling with a palm rope.
(5) Laying a coarse sand gravel layer: the thickness of the coarse sand gravel layer is 15 times of the diameter of the through hole, so that water can be conveniently filtered, and the coarse sand gravel layer extends to the tree planting nest.
(6) The quality of the planting nest is improved: according to the requirements of tree planting, the soil texture of the planting nest is configured into planting matrix soil of sandy soil.
(7) Planting trees: firstly, filling 50cm thick planting matrix soil in a pit, placing a tree soil ball in the pit and centering the tree soil ball, wherein the height of the soil ball is flush with the original soil surface, righting a trunk, filling the periphery with the planting matrix soil with improved texture, tamping, watering root water until the root water is fully wet, covering a mulching film for retaining water, and building a tree support frame.
(8) Managing and protecting before survival: wrapping the tree trunk with a water-retaining tape; in the seasons of high temperature and strong sunshine, the tree crown is covered with a sunshade net; according to the soil humidity and the demand of the overground part, uncovering the film in the pit for irrigation, recovering the ground film after irrigation, or spraying necessary crown water until the tree survives.
Example 4
(1) Positioning and excavating the tree planting pits: and determining the row pit distance of 2m multiplied by 2m by using a stay wire according to the specification required by the forest establishment of the trees, wherein the diameter of the dug pit is 40cm larger than the diameter of the soil ball and the depth is 25cm larger than the thickness of the soil ball according to the size of the trees and the size of the soil ball.
(2) Ditching and laying concealed pipes among rows of trees: a concealed pipe with the diameter of 3cm is laid between every two adjacent rows, the position of the concealed pipe is flush with the bottom of the nest, and the concealed pipe is inclined according to 7 degrees.
(3) Chiseling a water outlet: through holes with the diameter of 4cm are drilled on the left side and the right side of the concealed pipe which is opposite to the root system of the tree, and the through holes on the left side and the right side are staggered by 5 cm.
(4) Wrapping and cushioning the palm: wrapping 5 layers of palms at the through hole, and bundling with a palm rope.
(5) Laying a coarse sand gravel layer: the thickness of the coarse sand gravel layer is 8 times of the diameter of the through hole, so that water can be conveniently filtered, and the coarse sand gravel layer extends to the tree planting nest.
(6) The quality of the planting nest is improved: according to the requirements of tree planting, the soil texture of the planting nest is configured into planting matrix soil of the medium soil.
(7) Planting trees: firstly, filling 20cm thick planting matrix soil in a pit, placing a tree soil ball in the pit and centering the tree soil ball, wherein the height of the soil ball is flush with the original soil surface, righting a trunk, filling the periphery with the planting matrix soil with improved texture, tamping, watering root water until the root water is fully wet, covering a mulching film for retaining water, and building a tree support frame.
(8) Managing and protecting before survival: wrapping the tree trunk with a water-retaining tape; in the seasons of high temperature and strong sunshine, the tree crown is covered with a sunshade net; according to the soil humidity and the demand of the overground part, uncovering the film in the pit for irrigation, recovering the ground film after irrigation, or spraying necessary crown water until the tree survives.
Comparative example 1
Compared with example 1, comparative example 1 is that the water filtering layer is combined with the hidden pipe, and the soil texture in the planting nest is not changed.
(1) Positioning and excavating the tree planting pits: and determining the row pit distance of 2m multiplied by 2m by using a stay wire according to the specification required by the forest establishment of the trees, wherein the diameter of the dug pit is 40cm larger than the diameter of the soil ball and the depth is 25cm larger than the thickness of the soil ball according to the size of the trees and the size of the soil ball.
(2) Ditching and laying concealed pipes among rows of trees: and laying a concealed pipe with the diameter of 8cm between every two adjacent rows, wherein the position of the concealed pipe is flush with the bottom of the nest and is inclined at 4 degrees.
(3) Chiseling a water outlet: and 3 cm-diameter through holes are drilled on the left side and the right side of the concealed pipe opposite to the root system of the tree, and the through holes on the left side and the right side are staggered by 10 cm.
(4) Wrapping and cushioning the palm: 4 layers of palms are wrapped at the hole chiseled position of the hidden pipe and bundled by a palm rope.
(5) Laying a coarse sand gravel layer: the diameter of the coarse sand gravel layer is 10 times of the diameter of the pipe hole, so that water can be conveniently filtered, and the coarse sand gravel layer extends to the tree planting nest.
(6) Planting trees: firstly, filling 25cm thick planting matrix soil light soil in a pit, placing tree soil balls in the pit and centering the tree soil balls, wherein the height of the soil balls is flush with the original soil surface, righting a trunk, filling the periphery with the planting matrix soil with improved texture, tamping, watering root water until the root water is fully wet, covering a mulching film for retaining water, and building a tree support frame.
(7) Managing and protecting before survival: wrapping the tree trunk with a water-retaining tape; in the seasons of high temperature and strong sunshine, the tree crown is covered with a sunshade net; according to the soil humidity and the demand of the overground part, uncovering the film in the pit for irrigation, recovering the ground film after irrigation, or spraying necessary crown water until the tree survives.
Comparative example 2
Comparative example 2 is to change the soil texture in the planting pot without a closed pipe and a water filtration layer, compared with example 1.
(1) Positioning and excavating the tree planting pits: and determining the row pit distance of 2m multiplied by 2m by using a stay wire according to the specification required by the forest establishment of the trees, wherein the diameter of the dug pit is 40cm larger than the diameter of the soil ball and the depth is 25cm larger than the thickness of the soil ball according to the size of the trees and the size of the soil ball.
(2) The quality of the planting nest is improved: the planting nest soil is configured into light planting matrix soil.
(3) Planting trees: firstly, filling 25cm thick planting matrix soil light soil in a planting nest, placing tree soil balls in the nest and centering, wherein the height of the soil ball is flush with the original soil surface, righting a trunk, filling the periphery with planting soil with improved texture, tamping, watering roots until the roots are sufficiently wet, covering a mulching film for retaining water, and building a tree support frame.
(4) Managing and protecting before survival: wrapping the tree trunk with a water-retaining tape; in the seasons of high temperature and strong sunshine, the tree crown is covered with a sunshade net; according to the soil humidity and the demand of the overground part, uncovering the film in the pit for irrigation, recovering the ground film after irrigation, or spraying necessary crown water until the tree survives.
Comparative example 3
In comparison with example 1, comparative example 3 was conducted by changing the texture of soil in a planting hole, installing a closed pipe, and removing a water filtration layer.
(1) Positioning and excavating the tree planting pits: and determining the row pit distance of 2m multiplied by 2m by using a stay wire according to the specification required by the forest establishment of the trees, wherein the diameter of the dug pit is 40cm larger than the diameter of the soil ball and the depth is 25cm larger than the thickness of the soil ball according to the size of the trees and the size of the soil ball.
(2) Ditching and laying concealed pipes among rows of trees: and laying a concealed pipe with the diameter of 8cm between every two adjacent rows, wherein the position of the concealed pipe is flush with the bottom of the nest and is inclined at 4 degrees.
(3) Chiseling a water outlet: and 3 cm-diameter through holes are drilled on the left side and the right side of the concealed pipe opposite to the root system of the tree, and the through holes on the left side and the right side are staggered by 10 cm.
(4) Wrapping and cushioning the palm: 4 layers of palms are wrapped at the hole chiseled position of the hidden pipe and bundled by a palm rope.
(5) The quality of the planting nest is improved: according to the requirement of the crabapple tree species, the soil texture of the planting nest is configured into light soil planting soil.
(6) Planting trees: firstly, filling 25cm thick planting matrix soil light soil in a pit, placing tree soil balls in the pit and centering the tree soil balls, wherein the height of the soil balls is flush with the original soil surface, righting a trunk, filling the periphery with the planting matrix soil with improved texture, tamping, watering root water until the root water is fully wet, covering a mulching film for retaining water, and building a tree support frame.
(7) Managing and protecting before survival: wrapping the tree trunk with a water-retaining tape; in the seasons of high temperature and strong sunshine, the tree crown is covered with a sunshade net; according to the soil humidity and the demand of the overground part, uncovering the film in the pit for irrigation, recovering the ground film after irrigation, or spraying necessary crown water until the tree survives.
Analysis of test results
The sequence is a process number according to the embodiment.
Example 1: improving soil in the planting pit and completely draining water.
Comparative example 1: the water filtering layer is combined with the hidden pipe, and the soil texture in the planting pit is not changed.
Comparative example 2: the soil texture in the planting nest is changed, and the planting nest has no hidden pipe and no water filtering layer.
Comparative example 3: changing the soil texture in the planting nest, arranging a hidden pipe and having no water filtering layer.
TABLE 1 Crabapple tree test recording sheet
And (4) analyzing results:
example 1: the planting nest has good drainage effect, the tree growth condition is good in rainy season, yellow leaves do not exist, the growth potential of the crabapple tree is strong, and the ranking is first.
Comparative example 1: a small amount of accumulated water is reserved from the hidden pipe to the edge of the planting nest and can be drained, the trees are affected in rainy season, 1/3 yellow leaves exist, and the growing vigor is ranked the second.
Comparative example 2: the planting nest has serious water accumulation, and the growth vigor is ranked fourth when the yellow leaves of the trees are above 2/3 in rainy seasons.
Comparative example 2: the planting nest has serious water accumulation, and has no water filtering layer above yellow leaves 2/3 of trees in rainy season, which obstructs the drainage channel of water in the nest and a hidden pipe, and the yellow leaves are above 2/3, and the growth vigor is ranked the third.
Therefore, the method can effectively solve the problem of water accumulation in the cohesive soil tree pocket in rainy season, moisten and ventilate the soil, ensure that the root system of the tree better penetrates through the solid cohesive soil layer, enhance the growth vigor of the tree, and is a cost-saving and efficient method.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A drainage transformation method for a soil layer before planting trees in cohesive soil is characterized by comprising the following steps:
(1) digging a plurality of planting pits on the surface of the cohesive soil;
(2) laying hidden pipes which are flush with the bottoms of the planting pits on one sides of the planting pits, wherein a plurality of through holes are formed in one sides of the hidden pipes facing the planting pits, palms wrap the through holes, and water filtering materials are laid between the palms and the planting pits;
(3) and arranging loam in the planting nest.
2. A drainage modification method as claimed in claim 1, wherein the concealed conduit is laid inclined at an angle of 2 ° to 10 °, preferably 4 ° to 7 °, more preferably 4 °.
3. The drainage modification method of claim 1, wherein the diameter of the concealed pipe is 6-10 cm, preferably 8 cm.
4. The drainage modification method of claim 1, wherein the diameter of the through hole is 1-5 cm, preferably 3-5 cm.
5. The drainage modification method of claim 1, wherein the number of the palm wrapping layers is 2-6, preferably 4.
6. The drainage modification method according to claim 1, wherein the drainage material is laid to a thickness of 6 to 15 times, preferably 10 times, the diameter of the through-hole;
further, the laying width of the drainage material is the width from the palm to the tree planting nest;
still further, the water-filtering material is coarse sand gravel.
7. The drainage modification method of claim 1, wherein when the number of the through holes on one side of the concealed conduit is greater than 1, the distance between the through holes is 10-26 cm, preferably 16-20 cm.
8. The drainage modification method of claim 1, wherein when the concealed pipe is located between two planting nests, the concealed pipe is staggered by 5-13 cm, preferably 8-10 cm, towards the through holes on both sides of the planting nest.
9. The method of claim 1, wherein the loam is laid to a depth of 20-50 cm, preferably 25-40 cm.
10. The method of claim 1, wherein the loam is selected from one or more of sandy soil, light soil, medium soil and heavy soil.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20060124528A (en) * | 2005-05-31 | 2006-12-05 | 솔렌스(주) | Plant structure of tree for protecting sectional incline face at road |
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