CN103039233B - Root guiding and seedling raising method of arbor species for roof greening - Google Patents

Abstract

The invention discloses a root guiding and seedling raising method of arbor species for roof greening. The method includes eight steps: manufacturing root resistance plates; screening seedlings; marking; cutting off bottom roots; placing the root resistance plates; cutting off side roots; fixing the seedlings; and lifting the seedlings and planting to finally obtain the arbor species with the soil ball diameter ranging from 40cm to 60cm for roof greening. The special seedlings suitable for roof greening are cultivated by guiding the seedling roots of the arbor species to extend along the horizontal direction during seedling raising, the seedlings are used for roof greening after transplanted, the method solves the problem of difficulty in plating large arbor species due to roof bearing limitation and shallow planter soil, so that roof greening construction level is improved, and roof greening landscape effects are enriched.

Description

A kind of root-guiding seedling raising method for arbor tree species used for roof greening

technical field

The invention relates to a root-guiding seedling raising method for arbor tree species used for roof greening, and belongs to the technical field of horticulture.

Background technique

Landscaping plays an irreplaceable role in improving the quality of the urban environment, but the land for urban greening is extremely limited. Therefore, people have gradually changed the traditional greening method of planting on the ground, turned their attention to the sky, and started the exploration and practice of three-dimensional greening. Among them, the top of large-scale buildings has become the first choice for greening workers. However, since the roof of a building has a certain load-bearing range, the thickness of the roof planting soil cannot be increased without limit, and most trees and shrubs have deep root systems and cannot be directly planted in the thinner roof soil, which greatly reduces the effect of roof greening landscape. The present invention cuts off and suppresses the vertical root system of some tree species during the seedling raising period, promotes the growth of the horizontal root system, and cultivates some seedlings with shallow root system in advance, which solves the problem that fewer tree species can be selected for roof greening, and has the advantages of less investment, good effect, With the advantages of easy construction, it can be popularized and applied in large areas in urban green roofs.

Contents of the invention

The purpose of the present invention is to solve the difficulty of planting and surviving in the shallow soil of the roof due to the long vertical part of the root system of ordinary seedlings in roof greening. By guiding the roots of seedlings to extend horizontally during the seedling cultivation period, special seedlings suitable for greening the roof can be cultivated. The roof greening layer is enriched to provide a root-guiding seedling raising method for arbor tree species used for roof greening.

Technical scheme of the present invention

A kind of root-directing seedling raising method for arbor tree species used for roof greening, specifically comprises the following steps:

(1), make the root resistance board

Choose a perforated PVC plastic plate with a thickness of 0.3-0.5cm, a hole diameter of 0.1-0.3cm, a hole density of 25-100/m ² , evenly distributed, and cut the perforated PVC plastic plate into a square sheet with a side length of 30-50cm. That is, the root-blocking board is obtained;

(2), screening seedlings

In the nursery, choose native green trees with a root diameter of 5-10 cm as seedlings, and the rhizosphere soil of the seedlings is preferably clay or sticky loam, and there are no other seedlings or obstacles within the range of 1.5-2.0 m around the seedlings, which is convenient for seedling handling;

(3), mark

From November to February of the next year, use lime to mark a 30-50cm square centered on the root of the seedling selected in step (2), and smash stakes into the four corners as a long-term mark;

(4), broken root

Dig vertically downwards and outwards along the outside of the square marked in step (3), with an excavation width of 30-50cm, and after digging to a depth of 30-50cm, move along the direction parallel to the surface of the square marked in step (3). Dig down and inward horizontally to the other side corresponding to the square. The depth of the excavated soil is 10-15cm. At the same time, cut off the vertical root system of the seedlings and clean up the soil in the excavated space;

(5), discharge resistance root plate

Insert the root blocking plate prepared in step (1) into the gap at the bottom of the seedlings from the excavation opening of the broken root in step (4), corresponding to the square position on the ground, place it horizontally, and then backfill the root blocking plate with the excavated earth Step (4) Put 3-5kg of decomposed poultry and duck manure or ring manure into the bottom of the side of the excavation opening of the broken root, and pour the excavated earth backfill and compact it after watering;

(6), broken lateral root

After the seedlings that have been treated in step (5) grow for 1-3 years, restore the original square marked in step (3). In the square marked in step (3), except for the excavation side of the bottom root in step (4) The outer sides of the other three sides are excavated vertically outwards and downwards, the excavation width is 10-20cm, and the depth is 30-50cm, and the roots of the excavation openings on the other three sides are cut off, and then the Put 10-15kg of decomposed chicken and duck manure at the bottom, pour the water thoroughly, backfill and compact the excavated soil;

(7), fixed

  Fix the seedlings processed in step (6) by the well-tac-toe method with stakes to avoid lodging;

(8), seedling raising and planting

After the seedlings fixed in step (7) grow again for 1-3 years, the arbor tree species for roof greening can be obtained. According to the needs of roof greening, transplant with soil balls according to the conventional method, and the diameter of the soil balls should be kept at 40-60cm.

Beneficial effects of the present invention

A root-guiding seedling raising method for arbor tree species used for roof greening of the present invention, by guiding the root system of arbor tree seedlings to extend horizontally during the seedling raising period, to cultivate special seedlings suitable for roof greening, and the seedlings are used for roof greening after transplantation, solving the problem It solves the problems of roof load-bearing limitation, shallow planting soil, and difficulty in planting larger tree species, thereby improving the level of roof greening construction and enriching the effect of roof greening landscape. the

Detailed ways

The present invention is described in further detail below by way of examples, but the present invention is not limited.

Example 1

A kind of root-directing seedling raising method for arbor tree species used for roof greening, specifically comprises the following steps:

(1), make the root resistance board

Choose a 0.3cm thick PVC plastic plate with holes, the hole diameter is 0.1cm, the hole density is 25/m ² , evenly distributed, and the plastic plate is cut into a square sheet with a side length of 30cm;

(2), screening seedlings

In the nursery, choose the local greening trees with a root diameter of 5 cm as seedlings, and the rhizosphere soil of the seedlings is preferably clay or sticky loam, and there are no other seedlings or obstacles within 1.5m around the seedlings, which is convenient for seedling handling;

(3), mark

During November every year, use lime to mark a 30cm square with the root of the seedling selected in step (2) as the center, and smash into stakes at the four corners as a long-term mark;

(4), broken root

Use a shovel or other tools to excavate vertically outward and downward along the outside of the square marked in step (3), with an excavation width of 30cm. After digging to a depth of 30cm, move along the direction parallel to the surface of the square marked in step (3). Dig downward and inward horizontally to the other side corresponding to the square. The depth of the excavated soil is 10cm. At the same time, cut off the vertical root system of the seedlings and clean up the soil in the excavated space;

(5), discharge resistance root plate

Insert the root-blocking board prepared in step (1) into the hole at the bottom of the seedlings from step (4) into the gap at the bottom of the seedlings, corresponding to the square position on the ground, place it horizontally, and then use the excavated earth to backfill the root-blocking The bottom of the slab is compacted. In step (4), 3kg of decomposed chicken and duck manure is placed at the bottom of the side of the excavation opening of the broken root, and the excavated earth is backfilled and compacted after watering;

(6) Broken lateral roots: After the seedlings that have been treated in step (5) grow for one year, restore the square marked in step (3), and use a shovel or other tools to remove the square marked in step (3). (4) Excavate the outer sides of the other three sides outside the excavation side of the broken root, and excavate vertically outwards and downwards, with an excavation width of 10cm and a depth of 30cm. Put 10kg of decomposed chicken and duck manure into the bottom of the excavation opening on the side, and backfill and compact the excavated earthwork after watering;

(7), fixed

Fix the seedling stakes processed in step (6) according to the well-tac-toe method to avoid lodging;

(8) Seedling raising and planting: After the seedlings fixed in step (7) grow for another year, the arbor tree species for roof greening can be obtained. According to the needs of roof greening, transplant with soil balls according to the conventional method. The diameter of the soil balls is Keep it at 40cm.

Example 2

A kind of root-directing seedling raising method for arbor tree species used for roof greening, specifically comprises the following steps:

(1), make the root resistance board

Choose a 0.4cm thick PVC plastic plate with holes, 0.2cm hole diameter, 49 hole density/m ² , evenly distributed, and cut the plastic plate into a square sheet with a side length of 40cm;

(2), screening seedlings

In the nursery, select the local greening tree with a root diameter of 8 cm as the seedling, and the rhizosphere soil of the seedling is preferably clay or sticky loam, and there are no other seedlings or obstacles within the range of 1.8m around the seedling, which is convenient for seedling processing;

(3), mark

In January of each year, take the root of the seedling selected in step (2) as the center, mark a 40cm square with lime, and smash into stakes at the four corners as a long-term mark;

(4), broken root

Use a shovel or other tools to excavate vertically outward and downward along the outside of the square marked in step (3), with an excavation width of 40cm, and after digging to a depth of 40cm, then along the direction parallel to the surface of the square marked in step (3) Dig downward and inward horizontally to the other side corresponding to the square. The depth of the excavated soil is 12cm. At the same time, cut off the vertical root system of the seedlings and clean up the soil in the excavated space;

(5), discharge resistance root plate

Insert the root-blocking board prepared in step (1) into the gap at the bottom of the seedlings from the excavation opening in step (4), corresponding to the square on the ground, place it horizontally, and then backfill the root-blocking board with the excavated earthwork Step (4) put 4kg of decomposed ring fertilizer at the bottom of the side of the excavation opening of the broken root, pour the water thoroughly, backfill and compact the excavated earth;

(6), broken lateral root

After the seedlings treated in step (5) have grown for 2 years, restore the square marked in step (3) and use tools such as shovels to excavate in the square marked in step (3) except for the broken roots in step (4). The outer sides of the other three sides are excavated vertically outwards and downwards, with an excavation width of 15cm and a depth of 40cm. Put in 12kg of decomposed chicken and duck manure, pour the water and backfill and compact the excavated earth;

(7), fixed

Fix the seedlings processed in step (6) with wooden stakes according to the well-tac-toe method to avoid lodging;

(8) Seedling raising and planting: After the seedlings fixed in step (7) grow for another 2 years, the arbor tree species for roof greening can be obtained. According to the needs of roof greening, transplant with soil balls according to conventional methods. The diameter of the soil balls is Keep it at 50cm.

Example 3

A kind of root-directing seedling raising method for arbor tree species used for roof greening, specifically comprises the following steps:

(1), make the root resistance board

Choose a 0.5cm thick PVC plastic plate with holes, the hole diameter is 0.3cm, the hole density is 100/m ² , evenly distributed; the plastic plate is cut into a square sheet with a side length of 50cm;

(2), screening seedlings

In the nursery, choose the local greening tree with a root diameter of 10 cm as the seedling, and the rhizosphere soil of the seedling is preferably clay or sticky loam, and there are no other seedlings or obstacles within 2.0 m around the seedling, which is convenient for seedling handling;

(3), mark

During February every year, center on the root of the seedlings selected in step (2), mark a 50cm square with lime, and smash into stakes at the four corners as a long-term mark;

(4), broken root

Use a shovel or other tools to excavate vertically outward and downward along the outside of the square marked in step (3), with an excavation width of 50 cm. After digging to a depth of 50 cm, move along the direction parallel to the surface of the square marked in step (3). Excavate downward and inward horizontally to the other side corresponding to the square, digging the soil to a depth of 15cm, cutting off the vertical root system of the seedlings at the same time, and cleaning the soil in the excavated space;

(5), discharge resistance root plate

Insert the root-blocking plate prepared in step (1) into the gap at the bottom of the seedlings from the excavation opening of the broken root in step (4), corresponding to the square position on the ground, place it horizontally, and then use the excavated earth to backfill the root-blocking The bottom of the slab and compacted, step (4) put 5kg of decomposed ring fertilizer at the bottom of the side of the excavation opening of the broken root, pour the water thoroughly, backfill and compact the excavated earth;

(6), broken lateral root

After the seedlings treated in step (5) have grown for 3 years, restore the square marked in step (3) and use tools such as shovels to excavate in the square marked in step (3) except for the broken roots in step (4). The outer sides of the other three sides are excavated vertically outwards and downwards respectively, with an excavation width of 20cm and a depth of 50cm. 15kg of decomposed poultry and duck manure, backfill and compact the excavated soil after pouring water;

(7), fixed

Fix the seedlings processed in step (6) with wooden stakes according to the well-tac-toe method to avoid lodging;

(8), seedling raising and planting

After the seedlings fixed in step (7) grow for another 3 years, the arbor tree species for roof greening will be obtained. According to the needs of roof greening, transplant them with soil balls according to the conventional method, and the diameter of the soil balls will be kept at 60cm.

The above content is only a basic description of the concept of the present invention, and any equivalent transformation made according to the technical solution of the present invention shall fall within the scope of protection of the present invention.

Claims (2)

1. the arbor species of using for roof greening are led a root seedling-cultivating method, it is characterized in that specifically comprising the steps:

(1), make root resistance plate

Select the PVC plastic plate with holes of thick 0.3-0.5cm, aperture 0.1-0.3cm, hole density 25-100/m ², be uniformly distributed, PVC plastic plate with holes is cut into the square thin plate of length of side 30-50cm, obtain root resistance plate;

(2), screening nursery stock

In nursery, selecting the native soil greening arbor of root footpath 5-10cm is nursery stock, and Seedling rhizosphere soil is that clay or viscosity loam, nursery stock do not have other nursery stock or barrier within the scope of 1.5-2.0m around;

(3), mark

During annual February November to next year, centered by the selected nursery stock root of step (2), with lime, mark the square of 30-50cm, and pound into timber at four jiaos, as long-term mark;

(4), root of the disconnected end

Along under the square of step (3) mark lateral on one side, outside vertical excavation, excavation width 30-50cm, dig to degree of depth 30-50cm, along downward, the inside level of the direction parallel with the foursquare earth's surface of step (3) mark, excavate other one side corresponding to square again, excavation soil depth is 10-15cm, cut off the vertical root system of nursery stock simultaneously, and the soil digging out in space is cleaned out;

(5), put root resistance plate

The root resistance plate that step (1) is prepared is in advance filled in space, nursery stock bottom from the excavation mouth of root of the disconnected end of step (4), corresponding with ground square position, horizontal positioned, then bottom the tamping at root resistance plate with the backfilling of earthwork of excavating, the excavation mouth side bottom of root of the disconnected end of step (4) is put into the chicken and duck ight soil that 3-5kg becomes thoroughly decomposed, water permeable after by the backfilling of earthwork digging out compacting;

(6), disconnected lateral root

After the seedling growth 1-3 finishing dealing with until step (5), the square mark of the former delimitation of step (3) is restored, in the square of step (3) mark, except root of the disconnected end of step (4), excavating the outside on other three limit limit outwards distinguishes, excavates downward vertically, excavation width 10-20cm, dig to degree of depth 30-50cm, and the root system of the excavation mouth on other three limit is chopped off, then in the excavation mouth bottom on other three limit, put into the chicken and duck ight soil that 10-15kg becomes thoroughly decomposed, water permeable after by the backfilling of earthwork digging out compacting;

(7), fixing

The nursery stock timber that step (6) is finished dealing with is fixed by well word method, avoids lodging;

(8), lifting and planting

After the nursery stock regrowth 1-3 fixing until step (7), obtain the arbor species that roof greening is used.

2. the arbor species that the roof greening that a kind of arbor species of using for roof greening as claimed in claim 1 are led root seedling-cultivating method gained is used, is characterized in that the native bulb diameter of the arbor species that the roof greening of gained uses is at 40-60cm.