CN111226674A - Newly-built scattered-growth bamboo garden three-dimensional multi-effect planting structure and construction method thereof - Google Patents

Abstract

The invention discloses a newly-built scattered bamboo garden three-dimensional multi-effect planting structure and a construction method thereof, wherein the structure comprises a landscape scattered bamboo planting belt, a precious shade-resistant broad wood planting belt, an economic herb planting belt and a hardening separation footpath; the landscape scattered bamboo planting zone is a framework formed by longitudinally planting scattered bamboos in rows to form a forest community, and occupies the upper layer of the forest zone to fully utilize light energy; the precious shade-resistant broad wood planting belts are positioned between two adjacent landscape scattered bamboo planting belts and occupy the centers of the adjacent bamboo forest belts; the economic herbal planting belts are positioned below the vertical projection of the scattered bamboos of the landscape scattered bamboo planting belts and between two adjacent precious shade-resistant broad wood planting belts; the hard separation footpath is longitudinally arranged in the center of the precious shade-resistant broad wood planting belt, is parallel to the landscape scattered bamboo planting belt, is of a downward-sunken trapezoidal groove type structure, is used as a drainage channel and a management footpath, and is beneficial to summer drainage and daily tending and managing.

Description

Newly-built scattered-growth bamboo garden three-dimensional multi-effect planting structure and construction method thereof

Technical Field

The invention relates to the technical field of various operations of bamboo industry production and forestry, in particular to a newly-built scattered bamboo garden three-dimensional multi-effect planting structure and a construction method thereof.

Background

Bamboo, known as Bambusoideae, is a common name of the bamboo subfamily of the family Gramineae, and is a perennial woody plant. Bamboo, deficiency of heart, hardness, evergreen and wind-proud cold. People love bamboos because the bamboos are various in types and wide in application, and can provide various forest product services for human beings. The full understanding of the biological and ecological characteristics of different bamboo species is a prerequisite for the rational management of bamboo forests. The bamboo species mainly include 3 types of single-axis scattered type, cluster type and mixed type according to the distribution condition of overground parts of bamboo and the growth habit of stems. Generally, the environmental conditions of sympodial bamboos are higher than those of scattered bamboos, which have underground stems walking transversely and are not completely the same as those of sympodial bamboos in cultivation methods. When bamboo farmers manage and manage bamboo forests, because professional knowledge is less, the bamboo farmers often adopt a uniform management mode for different types of bamboo forests, so that the growth vigor of the bamboo forests is not strong, and the yield and the productivity of bamboo shoots are difficult to improve.

At present, the most common planting mode of newly-built scattered bamboo gardens in villages in China is still a single pure forest, and the planting mode has the advantages of tidy forest, simple cultivation and convenient management. However, the traditional planting mode has the following fatal defects: firstly, soil hardening and trace element shortage are easily caused by single plant planting, and the later soil quality can be reduced year by year; secondly, the planting mode is simple in plant layer slice, weeds are easy to breed in the space under the forest, and much labor is consumed to maintain management and cultivation; more importantly, the planting mode has insufficient utilization of the space on the ground and low forest productivity, and can not meet the current requirements of people on various forest products.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to solve the technical problems that the space of the ground is idle at the initial stage of building the garden of newly-built scattered bamboo gardens in China and the utilization rate of forest land resources is not high, and provides a three-dimensional multi-effect planting mode so as to solve the technical problems of monotonous plant configuration, low space utilization rate, serious pest and disease damage and low productivity in the bamboo industry production and scattered bamboo garden building in China.

In order to solve the technical problem, the invention discloses a newly-built scattered bamboo garden three-dimensional multi-effect planting structure, which comprises landscape scattered bamboo planting belts, precious shade-resistant broad wood planting belts, economic herb planting belts and a hardening separation footpath;

the landscape scattered bamboo planting zone is a framework formed by longitudinally planting scattered bamboos in rows to form a forest community, and occupies the upper layer of the forest zone to fully utilize light energy;

the precious shade-resistant broad wood planting belts are positioned between two adjacent landscape scattered bamboo planting belts and occupy the centers of the adjacent bamboo forest belts;

the economic herbal planting belts are positioned below the vertical projection of the scattered bamboos of the landscape scattered bamboo planting belts and between two adjacent precious shade-resistant broad wood planting belts;

the stereoplasm separation pavement vertically sets up at precious shade-resistant broad wood planting area central authorities, and is parallel with the scattered living bamboo planting area of view, and it is the trapezoidal slot type structure of undercut, does benefit to summer drainage and daily tending the management and protection as drainage channel and management pavement.

Specifically, the outer edge of the precious shade-resistant broad wood planting strip is aligned with the strip-shaped projection of the primarily planted bamboo crown in the landscape scattered bamboo planting strip; a low isolation wall is arranged between the precious shade-resistant broad wood planting zone and the economic herb planting zone, and 2/3 parts of the low isolation wall are buried in soil to prevent underground stems from fleeing outwards.

Further, a fixed cross rod is arranged between two adjacent landscape scattered bamboo planting belts; two ends of the fixed cross rod are fixed above the two corresponding scattered bamboos, and a movable sunshade net is arranged on the fixed cross rod.

The fixed cross rod is made of a dry straight 6-7-year-old bamboo rod with the length of 2.8-3.0 m and the thickness of 6-8 cm, the surface of the fixed cross rod is flattened, branches are cut off, two ends of the fixed cross rod are sawed into hollow horseear-shaped parts, a hole is drilled at the top end of the fixed cross rod, and the fixed cross rod is fixed on a newly-planted scattered bamboo trunk.

The sunshade net is a commercially available six-needle encrypted sunshade net, and the net width is 2-2.2 m; one side of the sunshade net is fixed, and the other side is movably arranged, so that a proper woodland illumination condition is created according to the seedling growing requirement.

Preferably, the bottom groove of the hard separation footpath has a width of 40-50 cm and a depth of 20-25 cm.

The invention also provides a construction method of the three-dimensional multi-effect planting structure of the newly-built scattered bamboo garden, which comprises the following steps:

(1) full reclamation and land preparation:

(2) ditching and digging a hole;

(3) planting bamboo seeds;

(4) interplanting the medicinal herbs;

(5) burying a low wall;

(6) transplanting the broad seedlings;

(7) paving a footpath;

(8) fixing the cross bar;

(9) movable sun shading;

(10) and (5) later-period management and protection.

Specifically, in the step (3), the bamboo species is a scattered bamboo, including any one of bamboos such as Phyllostachys nigra (phylostachys vivax), Phyllostachys nigra (phylostachys glabrata), Phyllostachys nobilis (phylostachys prominens) or Phyllostachys fulvus (phylostachys vivax 'Aureocaulis'); the planting mode is single-row symmetrical strip planting, the planting distance is 3-3.5 m, the row distance is 4-5 m, and landscape scattered bamboo planting strips are formed.

In the step (4), the medicinal herbs are interplanted below the bamboo crowns of the landscape scattered bamboo planting belt, the varieties are any one or combination of lycoris radiata, lily brown, Platycodon grandiflorum and Bletilla striata, the planting mode is multi-row close planting, and 40-45 plants are planted in each square meter to form the economic medicinal herb planting belt.

In the step (6), the broad seedlings are precious shade-resistant broad wood seedlings of Phoebecheikiangensis, Phoebesheareri, Machilus thunbergii or Zhejiang Guinea (Cinnamomum chekiangense), the transplanting mode is that the broad width is 0.6-0.8 m, the plant spacing is 0.2m multiplied by 0.2m, and 16-20 plants are planted in each square meter to form the precious shade-resistant broad wood planting belt.

Has the advantages that:

aiming at the technical defects existing in the construction of new scattered bamboo gardens in China at present, the technical method provided by the invention provides a novel three-dimensional multi-effect planting structure which is rich in variety of species, high in space utilization rate, beneficial to drainage and irrigation and capable of providing various forest products. On one hand, the structure mode fully utilizes the woodland empty space of the newly-built bamboo forest to cultivate precious shade-resistant broad wood and economic herb plants, and can harvest precious saplings and traditional Chinese medicines while operating a bamboo garden, thereby greatly increasing economic benefits; on the other hand, through ingenious plant configuration design and forest shading, soil hardening and soil drought are effectively prevented, the full-light growth of bamboo and wood is met, meanwhile, a half-shading and half-sun habitat space is reserved for the shading-resistant precious broad wood and economic herbaceous plants, young bamboo is not inclined, and benefit complementation and harmonious symbiosis among different ecological niche plants are facilitated.

Drawings

The foregoing and/or other advantages of the invention will become further apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic cross-sectional view of a multi-effect planting structure of the present invention.

Fig. 2 is a schematic cross-sectional view of a hardened separation walkway for multi-effect planting structures according to the invention.

FIG. 3 is a schematic view of the low isolation wall of the multi-effect planting structure of the present invention.

Fig. 4 is a schematic view of the fastening connection mode of the fixing cross rod and the scattered bamboo trunk in the multi-effect planting structure of the invention.

Fig. 5 is a schematic view of a direct-view structure of a fixed cross bar in the multi-effect planting structure of the invention.

Wherein each reference numeral represents:

1, landscape scattered bamboo planting belts; 2 fixing the cross bar; 3, a sunshade net; 4, planting precious shade-resistant broad wood; 5 hardening the separation footpath; 6, isolating the low wall; 7, an economic herbal planting belt; 8, relieving the wall; 9 side walls; 10 a bottom wall; 11, drilling a hole; 12 a hollow horse ear-shaped buckling part;

Detailed Description

The invention will be better understood from the following examples.

Examples

As shown in figure 1, the newly-built scattered bamboo garden three-dimensional multi-effect planting structure comprises landscape scattered bamboo planting belts 1, precious shade-resistant broad wood planting belts 4, economic herb planting belts 7 and a hardening separation footpath 5.

Wherein, the landscape scattered-living bamboo planting zone 1 is a framework formed by longitudinally planting scattered-living bamboos in rows to form a forest community and occupies the upper layer of the forest zone so as to fully utilize light energy; the precious shade-resistant broad wood planting belts 4 are positioned between two adjacent landscape scattered bamboo planting belts 1 and occupy the centers of the adjacent bamboo forest belts; the economic herb planting belts 7 are positioned below the vertical projection of the scattered bamboos of the landscape scattered bamboo planting belts 1 and between two adjacent precious shade-resistant broad wood planting belts 4; a low isolation wall 6 is arranged between the precious shade-resistant broad wood planting belt 4 and the economic herb planting belt 7, and 2/3 parts of the low isolation wall 6 are buried in soil to prevent underground stems from jumping out. In addition, the hard separation footpath 5 is longitudinally arranged in the center of the precious shade-resistant broad wood planting belt 4, is parallel to the landscape scattered bamboo planting belt 1, has a downward-concave trapezoidal groove structure, is used as a drainage channel and a management footpath, and is beneficial to summer drainage and daily tending and managing.

In 2018, 10 months to 2019, 11 months, a three-dimensional interplanting planting test of Phyllostachys bambusoides (Phyllostachys prominens) is carried out in Taicheng city flourishing agricultural ecological garden Limited company (Taicheng jujube forest bay), and the test scale is 20 mu. The test process is as follows:

(1) full reclamation and land preparation: and in 2018, 10 and 20 days, using an excavator to comprehensively turn over the garden soil, then using an agricultural rotary cultivator to deeply turn over, smash and level, wherein the turning depth is unified to 45cm, and applying base fertilizer in combination with land preparation, wherein the type of the base fertilizer is domestic agricultural compound fertilizer, and the application amount is 15-20 kg/mu.

(2) Ditching and digging a hole: after soil preparation, drainage ditches are arranged on the ground every 2.60m by a manual operation method, the south direction and the north direction are arranged, the ditching specification is trapezoidal, the bottom width is 20cm, the upper opening width is 40cm, and the depth is 25 cm. The ditching soil is placed on two sides and is moderately leveled. And (3) digging bamboo planting holes in parallel strips in the centers of the two rows of grooves, wherein the depth of each hole is 45-50 cm, the diameter of each hole is 50-55 cm, and the distance between every two holes is 2-2.5 m.

(3) Planting bamboo species: and in 12 months in 2018, 1-2-year-old high-noded bamboo seedlings with excellent plant types, robust growth and no damage are selected to construct the landscape scattered-growth bamboo planting belt 1. The thickness of the bamboo seedlings is 3-4.5 cm, the branches are kept for 3 discs, then the tips are cut off, bamboo bags are kept intact, and the diameter of soil balls is 15-20 cm. The depth of the planting is 2-3 cm deeper than the original soil layer trace, and soil covering and treading are performed in time after planting.

(4) Interplanting of medicinal herbs: in 3 months in 2019, after the landscape scattered bamboo planting belt 1 is moderately leveled on two sides, the Lycoris radiata seedballs are planted in a line drawing mode, and an economic herb planting belt 7 is constructed. Single-row banded mixed planting is adopted, the bandwidth is 0.5m, and 40-45 plants are planted per square meter. The outer edge of the formed economic herb planting belt 7 is required to be roughly aligned with the vertical projection of the upper bamboo crown.

(5) Burying a low wall: after the medicinal herbs are planted, an isolation short wall 6 is buried below the vertical projection of the bamboo crown, the isolation short wall 6 is formed by building cement and yellow sand according to the proportion of 0.5:1.5 (see figure 3), the thickness of the isolation short wall is 4-5 cm, the overall height is 45cm, the surface is naturally rough, and the exposed soil after the isolation short wall is buried is 8-10 cm.

(6) Broad seedling transplanting: selecting pre-cultivated Phoebe chekiangensis (Phoebe chekiangensis) bud seedlings to construct a precious shade-resistant broad wood planting zone 4, and transplanting the bud seedlings close to the isolation short wall 6. The planting mode is strip-shaped close planting, the bandwidth is 0.6m, the row spacing of the plants is 0.2m multiplied by 0.2m, and 16-20 plants are planted per square meter.

(7) Paving a footpath: the hardened separation walkway 5 is a ladder-type groove structure (see fig. 2). The groove type monomer is built by mixing cement and yellow sand according to a conventional proportion, and different monomers are naturally spliced. The specification of the finished product is as follows: the width of the bottom wall 10 of the bottom groove is 40cm, the opening width is 50cm, the bottom depth is 25cm, the wall thickness is 4-4.5 cm, and the longitudinal length of the single block is 45-50 cm. The slope design of lateral wall 9, the gradient is about 45 degrees, and 5cm wide gentle wall 8 is left at the lateral wall top, and the lock is pressed native naturally.

(8) Fixing the cross bar: the fixed cross bar 2 is made of a dry type straight 6-7-year-old bamboo pole with the length of 2.8-3.0 m and the thickness of 6-8 cm. The fixed cross bar 2 is required to be cut flat on the surface, two ends of the fixed cross bar are sawed into hollow horse ear-shaped buckling parts 12 (shown in figure 5) after branches are cut off, holes 11 are drilled on two sides, the aperture is 0.5cm, and the fixed cross bar is fixed on a newly planted bamboo pole by screws. The buckling style of the fixed cross bar 2 and bamboo wood is shown in figure 4.

(9) Erecting a movable sunshade net: the sun-shading net 3 is made of a commercially available six-needle-bar-shaped encrypted sun-shading net, the net width is 2.2m, and the erection height is 1.8 m. One side of the movable rod is fixed on the fixed cross rod through a metal wire, the other side of the movable rod is movably fixed on the stem rod on the opposite side through a rope, and the movable rod is controlled to open and close according to the illumination requirement in the seedling raising period so as to create a suitable forest habitat condition. Sunshade in winter and windproof on the side.

(10) And (3) later-period management and protection: necessary soil loosening and weeding are carried out according to weather and soil conditions in growing seasons, and irregular irrigation is carried out according to soil moisture in dry seasons; in 6 middle of the month, 1 additional foliar fertilization was performed with urea of 0.5% concentration.

Planting effect: the bamboo garden survey is carried out in 12 months in 2019, and the result shows that young bamboos grow normally and the preservation rate is 99.8%. After the bamboo is fixed, no deflection is seen after several months. The weeds on the earth surface are rare, the weeding operation is carried out for 3 times all the year round, the labor efficiency is improved, and the labor cost is greatly reduced. The broad wood seedlings in the forest grow well, the average ground distance is 4.5cm, the maximum growth amount reaches 5.1mm, the average height is 15.50cm, and the maximum growth amount reaches 25.5 cm; the lycoris radiata is well produced, flowering of the plants is realized, 2600kg of seed balls are harvested at the end of the year, and the economic benefit is considerable.

Comparative example 1

In 2018, 10 months to 2019, 11 months, a contrast planting test of Phyllostachys bambusoides (Phyllostachys prominens) is synchronously carried out in the Ministry agricultural ecological park (Taizi Bay) grown in Taizheng city, and the test scale is 10 mu. Before planting, finely and fully cultivating and preparing the land, ditching and digging holes, planting bamboo seeds and planting 460 bamboo seedlings in total according to the method. After planting, the low isolation wall 6 is buried and the broad wood seedlings are transplanted. The precious broad-leaved tree species are selected from the bud seedlings of the Zhejiang nan (Phoebechekeikiangensis), the bud seedlings are transplanted close to the isolation dwarf wall 6, the plant-row spacing is 0.2m multiplied by 0.2m, and 20 plants are planted per square meter. After the bud seedlings are transplanted, the separation footpath 5 is correspondingly paved, and the separation footpath 5 is of a trapezoidal groove type structure and has the same specification as the previous one. Finally, a fixed cross rod 2 and a sunshade net 3 are erected between the bamboos to control the illumination intensity between the bamboos.

The growth effect of the bamboo forest is counted in 12 months in 2019, the young bamboo is found to grow still, and the preservation rate is 98.9%. In 2019, the bamboo is dry in summer, but due to the adoption of sun-shading operation, the soil moisture conservation performance of the bamboo is good, 2 irrigation operations are carried out all the year round, and young bamboos do not fall or incline. Since the uneventful economic herbs under bamboos and a certain amount of weeds grow on the ground surface, the common weeds such as goosegrass (Eleusine indica), hispid Arthraxon (Arthraxon hispidus), Plantago asiatica (Plantago major), Eclipta prostrata (Eclipta prostrata) and the like are weeded 4 times all the year round, and the labor cost is relatively increased. The wide wood Zhejiang nan seedlings in the forest grow well, the average ground distance is 4.1cm, the maximum growth amount reaches 4.8mm, the average height is 18.5cm, and the maximum growth amount reaches 29.5 cm. The interplanting operation of the medicinal herbs is not carried out, and the income of the medicinal materials is zero.

Comparative example 2

In 2018, 10 months to 2019, 11 months, a yellow-stalk Wuyi-fed Phyllostachys bambusa (Phyllostachys vivax 'Aureocaulis') planting test is synchronously carried out in Taiyang city flourishing agricultural ecological garden Limited company (Taiyang jujube Bay), and the test scale is 5 mu. Before planting, the steps of the method are carried out for careful full-reclamation land preparation, ditching and hole digging and bamboo species field planting. However, the above-mentioned interplanting of herbs, burying of short walls, transplanting of broad seedlings, paving of footpaths, fixing of cross bars and movable shading are not performed. The growth effect of the bamboo forest is counted in 12 months in 2019, the young bamboo is found to grow still, and the preservation rate is 96.2%. However, due to the drought in summer of 2019, 5 times of irrigation operations are carried out all the year round, and the lodging rate of part of young bamboos is 15%, so that the workload of field management and maintenance is greatly increased. The interplanting of bamboo forest is not implemented, the sunlight among the bamboos is sufficient, the growth of the weeds on the ground surface is particularly luxuriant, particularly the growth of the malignant weeds such as Vicia hirsuta, Geranium wilfordii (Geranium carolinaum), Eclipta prostrata (Eclipta prostrata) and the like is vigorous, and the labor cost of weeding the bamboo forest is the largest. After weeding operation, the earth surface is exposed, the sunlight is sufficient, the soil is obviously hardened, and the structure is poor.

The invention provides a thought and a method for building a three-dimensional multi-effect planting structure of a scattered bamboo garden and a construction method thereof, and a method and a way for realizing the technical scheme are many. All the components not specified in the present embodiment can be realized by the prior art.

Claims (10)

1. A newly-built three-dimensional multi-effect planting structure of a scattered bamboo garden is characterized by comprising landscape scattered bamboo planting belts (1), precious shade-resistant broad wood planting belts (4), economic herb planting belts (7) and a hardening separation footpath (5);

the landscape scattered bamboo planting zone (1) is a framework formed by longitudinally planting scattered bamboos in rows to form a forest community, and occupies the upper layer of the forest zone to fully utilize light energy;

the precious shade-resistant broad wood planting belts (4) are positioned between two adjacent landscape scattered bamboo planting belts (1);

the economic herb planting belts (7) are positioned below the vertical projection of the scattered bamboos of the landscape scattered bamboo planting belts (1) and between two adjacent precious shade-resistant broad wood planting belts (4);

the hard separation footpath (5) is longitudinally arranged in the center of the precious shade-resistant broad wood planting belt (4), is parallel to the landscape scattered bamboo planting belt (1), and is of a downward-sunken trapezoidal groove type structure.

2. The newly-built scattered bamboo garden three-dimensional multi-effect planting structure as claimed in claim 1, wherein the outer edge of the precious shade-tolerant broad wood planting strip (4) is aligned with the strip-shaped projection of the primarily-planted bamboo crown in the landscape scattered bamboo planting strip (1); a low isolation wall (6) is arranged between the precious shade-resistant broad wood planting belt (4) and the economic herb planting belt (7), and 2/3 parts of the low isolation wall (6) are embedded in soil to prevent underground stems from channeling outwards.

3. The newly-built scattered bamboo garden three-dimensional multi-effect planting structure as claimed in claim 1 or 2, characterized in that a fixing cross bar (2) is arranged between two adjacent landscape scattered bamboo planting belts (1); two ends of the fixed cross rod (2) are fixed above the two corresponding scattered bamboos, and a movable sunshade net (3) is arranged on the fixed cross rod (2).

4. The newly-built scattered bamboo garden three-dimensional multi-effect planting structure as claimed in claim 3, wherein the fixing cross bar (2) is made of 6-7 year-old bamboo poles with dry straight type, length of 2.8-3.0 m and thickness of 6-8 cm, the surface of the fixing cross bar is flattened, after branching, two ends of the fixing cross bar are sawed into hollow horse-ear-shaped parts, the top end of the fixing cross bar is drilled, and the fixing cross bar is fixed on the newly-planted scattered bamboo trunk.

5. The newly-built scattered bamboo garden three-dimensional multi-effect planting structure as claimed in claim 3, wherein the sunshade net (3) is a commercially-available six-needle encrypted sunshade net with a net width of 2-2.2 m; one side of the sunshade net (3) is fixed, and the other side is movably arranged, so that a proper woodland illumination condition is created according to the seedling growing requirement.

6. The newly-built scattered bamboo garden three-dimensional multi-effect planting structure as claimed in claim 1 or 2, wherein the bottom groove of the hardening separation footpath (5) is 40-50 cm wide and 20-25 cm deep.

7. The method for constructing the three-dimensional multi-effect planting structure of the newly-built scattered bamboo garden of claim 1, is characterized by comprising the following steps:

(1) full reclamation and land preparation:

(2) ditching and digging a hole;

(3) planting bamboo seeds;

(4) interplanting the medicinal herbs;

(5) burying a low wall;

(6) transplanting the broad seedlings;

(7) paving a footpath;

(8) fixing the cross bar;

(9) movable sun shading;

(10) and (5) later-period management and protection.

8. The method for constructing the three-dimensional multi-effect planting structure of the newly-built scattered bamboo garden as claimed in claim 7, wherein in the step (3), the bamboo species is scattered bamboo, including any one of pleioblastus nigromaculatus, pleioblastus giganteus, or phyllostachys pubescens; the planting mode is single-row symmetrical strip planting, the planting distance is 3-3.5 m, the row distance is 4-5 m, and the landscape scattered-growing bamboo planting strip (1) is formed.

9. The construction method of the three-dimensional multi-effect planting structure of the newly-built scattered bamboo garden as claimed in claim 7, wherein in the step (4), the herbs are interplanted below the bamboo crowns of the landscape scattered bamboo planting belts, the species is any one or combination of lycoris radiata, lily, platycodon grandiflorum and bletilla striata, the planting mode is multi-row close planting, and 40-45 plants are planted per square meter to form the economic herb planting belts (7).

10. The method for constructing the three-dimensional multi-effect planting structure of the newly-built scattered bamboo garden as claimed in claim 7, wherein in the step (6), the broad seedlings are precious and shade-resistant broad wood seedlings of Phoebe chekiangensis, Phoebe thunbergii, Phoebe serrulata or Pimenta thunbergii, the transplanting mode is that the broad width is 0.6-0.8 m, the plant spacing is 0.2m x 0.2m, and 16-20 plants are planted per square meter to form the precious and shade-resistant broad wood planting belt (4).

Images