CN113728868A

CN113728868A - Gradual structure adjustment and updating rejuvenation method for degenerated scattered bamboo garden

Info

Publication number: CN113728868A
Application number: CN202111186300.XA
Authority: CN
Inventors: 金雅琴; 范俊俊; 王文君; 冯宗清
Original assignee: Jinling Institute of Technology
Current assignee: Jinling Institute of Technology
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2021-12-03
Anticipated expiration: 2041-10-12
Also published as: CN113728868B

Abstract

The invention discloses a gradual structure adjustment and updating rejuvenation method for a degenerated scattered bamboo garden, which comprises the following steps: (1) surveying the whole garden; (2) dividing a cell; (3) labeling the bamboo age; (4) 4, old people are thinned and young children are nourished; (5) cultivating and nourishing bamboo; (6) and controlling and harvesting the bamboo shoots. The technical method provided by the invention can realize organic updating of the degraded bamboo forest in steps and in a short time and recover the healthy bamboo forest which is reasonable in structure and full of vitality; on the other hand, through the ingenious partition and alternate operation design, the bamboo shoots can be stably harvested while the requirements of orderly updating of the bamboo forest and the reasonable bamboo standing degree are kept, so that the condition that the updated bamboo forest is uniformly illuminated and fully nourished is ensured, and the continuous shoot growth and the continuous utilization of the bamboo forest are promoted.

Description

Gradual structure adjustment and updating rejuvenation method for degenerated scattered bamboo garden

Technical Field

The invention relates to the technical field of bamboo production and bamboo forest management and management, in particular to a gradual structure adjustment and updating rejuvenation method for a degenerated scattered bamboo garden.

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. The bamboo has various varieties and wide application, can provide various forest product services for human beings, and has the remarkable characteristics of strong vitality and long-term income after one-time bamboo planting, thereby being preferred by people.

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. In general, sympodial bamboos are suitable for growing in tropical and subtropical regions, while scattered bamboos are suitable for growing in temperate and northern subtropical regions. The bamboo shoots form multiple-section false shoots, the buds on the joints have no roots, the top buds grow into stalks, the bamboo stalks are densely gathered on the ground, the scattered bamboo shoots are densely crossed under the ground, and the bamboo stalks grow dispersedly on the ground after the bamboo shoots grow. When bamboo farmers manage and manage bamboo forests, due to the lack of professional knowledge, a uniform management mode is often adopted for different types of bamboo forests, and in addition, the management of the bamboo forests is increasingly extensive due to the lack of labor force in recent years, the bamboo forests which are managed for years are in embarrassment of aging of the bamboo forests, decline of growth vigor, sharp reduction of bamboo shoot generation amount and difficulty in production.

At present, the updating technology of the aged bamboo forest is generally lacked, the updating mode is still single one-time bamboo forest felling one-time reseeding, and the operation mode has the advantages of simple technology, convenience in operation and high implementation efficiency. However, this conventional update mode has the fatal drawbacks as follows: firstly, the high consistency of the updating starting time tends to form a peer forest with a simple structure, and the strong competitive effect causes the productivity of the bamboo forest to be sharply reduced after a plurality of years; secondly, the plant laminas in the updating mode are simple, forest lands are exposed in a short time, weeds are easy to breed, and much labor is consumed to maintain management and maintenance; more importantly, the bamboo forest is not subjected to selective felling and gradual supplement in the updating mode, the green quantity and the accumulated quantity of the forest disappear instantly, the bamboo shoots of the bamboo forest are broken for years, the consumption requirements of people on the bamboo shoots cannot be met, and the requirements of sustainable management cannot be met.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to solve the technical problem of providing a gradual structure adjustment and updating rejuvenation method for a degenerated and scattered bamboo garden aiming at the current situations that the current bamboo forest tends to age, has poor structure, gradually declines the productivity and gradually lowers the utilization rate of forest land resources.

In order to solve the technical problem, the invention discloses a gradual structure adjustment and updating rejuvenation method for a degenerated scattered bamboo garden, which comprises the following steps:

step (1) carrying out full-circle investigation;

step (2) dividing the cells;

step (3) labeling the bamboo ages;

step (4), old people are thinned and rejuvenated;

step (5) cultivating and raising bamboos;

and (6) controlling bamboo shoots and harvesting.

The method comprises the following steps of (1) comprehensively checking the existing degraded bamboo forest, and checking the area of the bamboo garden, the shape of the bamboo garden, the total number of plants, the planting age, the name of bamboo species, the source of mother bamboo, the soil texture and the soil fertility, and the occurrence conditions of plant diseases and insect pests and natural disasters of the bamboo forest.

The division of the cells in the step (2) is carried out according to the shape of the bamboo garden, if the shape of the bamboo garden is nearly rectangular, the long sides of the cells are arranged in parallel to the edge lines of the bamboo forest, the length of the cells is equal to the edge lines of the bamboo forest, and the width of the cells is 4-6 meters; if the bamboo garden is nearly circular or elliptical, the cells are radially arranged, the cell boundaries are divided from the center to the edges, the radiation angle is 30-35 degrees, and the cell widths are different.

After the subdistricts are divided, digging isolation trenches with the width of 20-24 cm and the depth of 25-30 cm between the subdistricts; the bamboo cards in the districts are distinguished and marked clearly by Roman letters I, II and III in turn.

The bamboo age label in the step (3) is to comprehensively judge the bamboo age according to the colors of bamboo leaves, twigs and bamboo stalks (Table 1), divide age levels and mark old bamboos with paints of different colors; the young bamboos of less than 5 years are not marked, the young bamboos of 6 to 7 years are marked with yellow, the young bamboos of 8 to 9 years are marked with black, and the young bamboos of 10 years and more are marked with red.

TABLE 1 rough judgment of bamboo age

Wherein, the step (4) is to carry out felling operation in the area I of the current year, and all the bamboos marked with red are dug out with roots; in 2 nd year, bamboo marked with black color and red old bamboo in area II are harvested in area I; in 3 rd year, cutting yellow marked bamboos in the area I, cutting black marked bamboos in the area II and cutting red old bamboos in the area III to finish a cycle; after each felling, cleaning and preparing the soil, regularly digging holes, and replanting the same 1-year-old young bamboos; and if one round is not enough for all the updates, starting a second round at the right moment until the updates are completed, and recovering the vitality of the bamboo forest. Typically harvesting operations are scheduled around 10 months per year.

Wherein the step (5) of cultivating and fostering the bamboos comprises soil improvement, organic covering, intertillage weeding, irrigation and fertilization after young bamboos are planted.

The soil improvement comprises the steps of adjusting the pH value of soil according to the previous bamboo forest cleaning results, applying quicklime or calcium cyanamide if the pH value of the soil is less than 6.5, applying the quicklime in a broadcasting mode, applying the calcium cyanamide in a hole mode, wherein the dosage of the quicklime is 20-25 kg/mu, and the dosage of the calcium cyanamide is 250-300 g/plant.

The organic covering is to apply organic matters with the thickness of 2-3 cm on the surface of the bamboo forest additionally, the organic matters are a mixture of crushed bamboo branches and bamboo leaves harvested in a bamboo garden and fully fermented chicken and duck manure, the grain size of the crushed bamboo garden is required to be less than 0.5cm, and the mixing volume ratio of the crushed bamboo garden to the chicken and duck manure is 4.5-5: 1.

Wherein, the intertillage weeding is weeding operation which is carried out more than 3 times per year, and the weeds on the surface of the bamboo forest are required to be removed completely, so that the weed competition is reduced.

Wherein, the irrigation and fertilization comprises two aspects of water regulation and fertility improvement; the water regulation requires timely water supplement for soil according to the soil moisture content of the earth surface, a Hydra Probe soil moisture temperature sensor produced by Stevens corporation in America is used for soil moisture detection, and irrigation water supplement is carried out when the volume water content of the soil is lower than 30%; the fertility is improved to 4-5 months per year, soil topdressing is carried out on the bamboo forest 1 time per year, the topdressing mode is that furrows are opened around the bamboo stalks by 50-55 cm, the depth of the furrows is 20-25 cm, soil is covered and backfilled after application, and the fertilizer is fully decomposed organic fertilizer or inorganic fertilizer.

The bamboo shoot control harvesting in the step (6) is to selectively harvest bamboo shoots according to pre-divided cells so as to control the density of new bamboo shoots and ensure that the density of bamboo forests is moderate; after the harvesting operation is completed, bamboo shoots are harvested in the area I, bamboo shoots are cultured in the areas II and III, bamboo shoots are harvested in the area II in the 2 nd year, bamboo shoots are harvested in the areas I and III in the 3 rd year, bamboo shoots are cultured in the areas I and II, and the bamboo shoot harvesting operation is performed by parity of turns by parity of reasoning, so that harvesting is realized every year, and bamboo reserves are reserved every year.

The selective bamboo shoot picking method is characterized in that the selective bamboo shoot picking method mainly comprises the step of removing poor bamboo shoots with too concentrated density, disease insect bamboo shoots and obvious defects, 18-20 bamboo shoots are reserved per 100 square meters in the density control principle, and the poor bamboo shoots are not picked when the density is lower than the index.

Has the advantages that: aiming at the technical defects of updating and improvement in the current bamboo industry production and bamboo forest management, the invention provides a mode which is simple and convenient in actual operation, is beneficial to improving soil and improving bamboo forest productivity, and can continuously provide gradual bamboo forest updating and structure adjustment of bamboo products. The technology provided by the application can realize organic updating of the degraded bamboo forest in steps and in a short time and orderly manner on one hand, and recover the healthy bamboo forest which is reasonable in structure and full of vitality; on the other hand, through the ingenious partition and alternate operation design, the bamboo shoots can be stably harvested while the requirements of orderly updating of the bamboo forest and the reasonable bamboo standing degree are kept, so that the condition that the bamboo forest is uniformly illuminated and fully nourished after being updated is ensured, and the proper density, continuous bamboo shoot generation and continuous utilization of the bamboo forest are promoted.

Drawings

FIG. 1 is a schematic diagram of a partition structure of a nearly rectangular bamboo garden plot;

fig. 2 is a schematic diagram of a division structure of a nearly circular or oval bamboo garden plot.

In the figure, 1 is the bamboo garden boundary, 2 is the isolation trench, and 3 is the operation cell.

Detailed Description

The invention will be better understood from the following examples. The description of the embodiments is intended to be illustrative of the invention and should not, nor should it be taken to limit the invention to the details set forth in the claims.

Example 1

In 2013, 10 months to 2019, 10 months, a degraded bamboo garden structure adjustment and updating test is carried out in an experiment forest farm in Yizhen City (Small copper mountain in Yizhen city, Jiangsu province), and the implementation process is as follows:

(1) and (3) surveying in the whole garden: in 2013, 20-22 months, carrying out comprehensive investigation on the existing degraded moso bamboo (Phyllost axes rheo cv. Pubescens) forest by applying field survey, wherein the implementation area of the bamboo garden is 32 mu, the shape of the bamboo garden is nearly rectangular (the irregular bamboo forest at the outer edge is not implemented), the unit area of the bamboo forest is 328 plants/mu, and the plants are dense but distributed unevenly. The planting age is about 2000 spring, and after years of operation, the bamboo forest loses the pipe and is obviously aged. The pH value of the forest soil is 6.2, the soil thickness is 25-35 cm, the texture is sticky, the fertility is moderate, the bamboo forest has fewer plant diseases and insect pests, and severe snow disaster hazards are experienced in 2008.

(2) Cell division: the bamboo garden is nearly rectangular, the long side of the operation district is parallel to the edge line of the bamboo forest, and the width of the district is 4-5 m. Isolation trenches with the width of 20cm and the depth of 25-30 cm are dug between the communities. Bamboo cards are inserted at the end parts of the communities, and are marked with I, II and III in sequence (figure 1).

(3) The bamboo age is labeled as follows: the ages of the bamboos are comprehensively judged according to the table 1, age levels are divided, and the old bamboos are marked by paints with different colors. The marking method comprises the steps of marking the young bamboos of less than 5 years old with yellow marks, marking the bamboos of 6-7 years old with black marks for 8-9 years, and marking the bamboos of 10 years old or more with red marks.

(4) And (3) aging and young nourishing: carrying out felling operation in the area I from 2013, and digging out all red-marked bamboos with roots; harvesting black labeled bamboos and red old bamboos in the area II in the next year; in 3 rd year, cutting yellow marked bamboos in the area I, cutting black marked bamboos in the area II and cutting red old bamboos in the area III to finish a cycle; after each felling, clearing and soil preparation, standard digging, and replanting the same 1-year-old young bamboos.

(5) Cultivating and nourishing bamboos: after young bamboos are planted, soil improvement, organic covering, intertillage weeding, irrigation and fertilization are carried out. Due to the fact that the pH value of soil is low, quicklime is spread on the soil surface to improve the soil, and the using amount is 20-25 kg/mu. And applying organic matters with the thickness of 2-3 cm on the ground surface after the bamboo forest is renewed, wherein the organic matters are a mixture of bamboo branches cut in a bamboo garden, crushed bamboo leaves (the particle size is less than 0.5cm) and fully fermented chicken and duck manure, and the mixing volume ratio is 5: 1. And 4 months from 2013, the weeding operation is carried out more than 3 times per year, and the weed competition is reduced. During the growth period, the volume water content of the soil is measured by using a Hydra Probe soil moisture temperature sensor produced by Stevens corporation in the United states every 20 days, and irrigation water replenishing is carried out when the volume water content of the soil is lower than 30%. And (3) performing soil topdressing on the bamboo forest for 1 time a year by using fully decomposed organic fertilizer 4-5 months every year, wherein the topdressing mode is furrow application, furrowing is performed around the bamboo stalks by 50-55 cm, the depth of the furrows is 20-25 cm, and soil is covered and backfilled after the furrow application.

(6) Controlling and harvesting the bamboo shoots: in 2016, bamboo shoots are collected in a first area, bamboo shoots are cultured in a second area, bamboo shoots are collected in the second area, bamboo shoots are cultured in the first area, bamboo shoots are collected in the third area, and bamboo shoots are cultured in the first area and the second area.

(7) The implementation effect is as follows: the bamboo forest was investigated from 12 months in 2020. The bamboo forest grows thick, the canopy is good, and the distribution is even. The existing density of the bamboo forest is 168 plants/mu, the density is proper, the bamboo shoots can normally shoot every year, the average shoot rate is 82%, the number of the shoot per unit area is 450-500 kg/mu, and the economic benefit is considerable.

Example 2

In 2014 10-2020 10, degraded Mao bamboo forest structure adjustment and update tests are carried out in Lishui area forest farms in Nanjing, and the implementation process is as follows:

(1) bamboo forest exploration: 10-20 days 10 months in 2014, a degraded moso bamboo (P hylostochys heterocylia cv. pubescens) forest which is operated for many years is comprehensively checked through field survey, the implementation area is 40 mu, the shape of the bamboo garden is nearly elliptical, the density of the bamboo forest is 339 plants/mu, the bamboo garden is dense, and part of single bamboos are prone to lodging due to snow disasters. The bamboo forest is originally built in 2002, is extensive in operation and is obvious in aging. The soil pH value is 6.4, the soil thickness is 35-45 cm, the texture is sticky and heavy, the fertility is good, and part of single bamboo loses the pipe and falls down.

(2) Cell division: the bamboo garden is nearly elliptical, the cells are radially arranged and are wedge-shaped, the cell boundaries are divided from the center to the edges, the radiation angle is 30-35 degrees, and the cell widths are different. Isolation trenches with the width of 20cm and the depth of 25-30 cm are dug between the communities. Bamboo cards are inserted at the end of each cell, and are marked I, II and III (figure 2).

(3) The bamboo age is labeled as follows: and judging the age of the bamboos according to the experience, dividing the age levels, and marking the aged bamboos by using paints with different colors in the same way as before.

(4) And (3) aging and young nourishing: starting to carry out felling operation in the area I at the end of 2014, and completely felling red-marked bamboos; harvesting black labeled bamboos and red old bamboos in the area II in the next year; in 3 rd year, cutting yellow marked bamboos in the area I, cutting black marked bamboos in the area II and cutting red old bamboos in the area III to finish a cycle; after felling, tending treatment was carried out according to the method of example 1.

(5) Cultivating and nourishing bamboos: after young bamboos are planted, measures such as appropriate soil improvement, organic covering, intertillage weeding, irrigation and fertilization and the like are implemented. And (3) spreading quicklime on the ground surface to improve the soil, wherein the using amount is 20-25 kg/mu. And applying organic matters with the thickness of 2-3 cm on the ground surface. The organic matter is a mixture of crushed bamboo garden (grain size less than 0.5cm) and fully fermented chicken manure (mixing volume ratio is 5: 1). And weeding operation is carried out for more than 3 times per year after young bamboos are planted. And when the volume water content of the soil is lower than 30%, irrigation and water supplement are timely carried out. And (3) performing soil topdressing on the bamboo forest for 1 time a year by using fully decomposed organic fertilizer 4-5 months every year, wherein the topdressing mode is furrow application, furrowing is performed around the bamboo stalks by 50-55 cm, the depth of the furrows is 20-25 cm, and soil is covered and backfilled after the furrow application.

(6) Controlling and harvesting the bamboo shoots: and (3) beginning to collect bamboo shoots in a first area, cultivating bamboo shoots in a second area, collecting bamboo shoots in the second area, cultivating bamboo shoots in the first area, cultivating bamboo shoots in the third area, collecting bamboo shoots in the third area and cultivating bamboo shoots in the first area and the second area in the bamboo garden in 2017.

(7) The implementation effect is as follows: the bamboo forest was investigated from 12 months in 2020. At present, the old bamboos in the bamboo forest for more than 10 years are basically updated, the bamboo forest is closed, and the vitality is recovered. The existing density of the bamboo forest is 149 plants/mu, the bamboo forest grows well and normally shoots, the average shoot rate is 79 percent, the average shoot rate per unit area is 430 kg/mu, and the economic benefit is considerable.

Comparative example 1

In 2017, 10 months to 2019, 10 months, and the construction of agricultural ecological gardens (tea shed communities in Puchant) in Nanjing pearl spring gardens, the adjustment and the updating project of the structure of bamboo forest of Phyllostachys nigra and Carcinia Maultflora champ in gardens are implemented. The bamboo garden is in a shape of a nearly oval, the area of the bamboo garden is 20 mu, the density of the bamboo forest is 342 plants/mu, and the bamboo garden is highly dense. The planting age is about 2003, and the bamboo forest tends to age after leaving and losing pipes for years, and the bamboo shoot amount per year is very small. In 2008, serious snow disaster damage is experienced, some bamboos bloom and age, and the bamboo standing degree of the bamboo forest is not uniform. Harvesting is carried out on the bamboo forest for three times in 10 months in 2017, the harvesting mode is that the bamboo forest is harvested for two times, 10 mu on one side is harvested in 2017, 6 mu adjacent to the bamboo forest is harvested in 2018, and the remaining 4 mu is harvested in 2019. The young bamboos of the same 1 year are replanted every time of harvest, intertillage weeding and irrigation fertilization are carried out on the surface of the bamboo forest at proper time, but the soil improvement and organic coverage are not implemented.

Continuous follow-up survey was conducted on bamboo groves from 12 months in 2019. The bamboo forest is basically updated, but the age of the bamboo forest is close, the surface weeds are luxuriant, and the soil tends to be hardened; the existing density of the bamboo forest is medium (210 seedlings/mu after young bamboo cultivation), the young bamboo part is provided with bamboo shoots, but the young bamboo shoots are distributed unevenly, the average bamboo shoot rate is not high (39%), and the yield of the bamboo shoots per unit area is less than 100 kg/mu.

The present invention provides a thought and a method for gradually adjusting the structure of a degenerated scattered bamboo garden and updating and rejuvenating the degenerated scattered bamboo garden, and a method and a way for implementing the technical scheme are many, and the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. A gradual structure adjustment and renewal and rejuvenation method for a degenerated scattered bamboo garden is characterized by comprising the following steps:

(1) and (3) surveying in the whole garden: understanding the current situation of the degraded bamboo garden;

(2) cell division: dividing the bamboo garden into cells, arranging isolation trenches between adjacent cells, and circularly marking all the cells according to I, II and III in sequence;

(3) the bamboo age is labeled as follows: marking all bamboos according to four age levels of young bamboos growing less than 5 years, 6-7 years, 8-9 years, 10 years and above;

(4) and (3) aging and young nourishing: carrying out felling operation only in the area I in the current year, and felling all bamboos for 10 years or more; felling 8-9 year marked bamboos in the area I in the 2 nd year, and felling 10 years or more of bamboos in the area II; cutting 6-7 year marked bamboos in a region I, 8-9 year marked bamboos in a region II and 10 or more years marked bamboos in a region III in the 3 rd year to finish a cycle; replanting the same 1-year-old young bamboos after each felling; starting a second round at the right time when one round is not enough for all updates until the old bamboos are completely updated, and recovering the bamboo forest from survival;

(5) cultivating and nourishing bamboos: soil improvement, organic coverage, intertillage weeding, irrigation and fertilization after young bamboo planting;

(6) controlling and harvesting the bamboo shoots: after the completion of one round of cutting operation, bamboo shoots are harvested in the area I, bamboo shoots are cultivated in the areas II and III, bamboo shoots are harvested in the area II in the 2 nd year, bamboo shoots are harvested in the areas I and III in the 3 rd year, bamboo shoots are cultivated in the areas I and II, and the rest is done in turn to harvest bamboo shoots.

2. The progressive structure adjustment and renewal rejuvenation method for a degraded scattered-growth bamboo garden as claimed in claim 1, wherein in step (1), the overall survey is a comprehensive survey of the existing degraded bamboo forest, and the area, shape, total number of plants, year of planting, name of bamboo species, source of mother bamboo, texture and fertility of soil of the bamboo garden, and occurrence of plant diseases and insect pests and natural disasters of the bamboo forest are surveyed.

3. The gradual structure adjustment and renewal rejuvenation method for a degraded scattered bamboo garden as claimed in claim 1, wherein in step (2), the cells are divided according to the shape of the degraded bamboo garden, and if the shape of the bamboo garden is nearly rectangular, the long sides of the cells are arranged parallel to the edge lines of the bamboo forest, and the length of the cells is equal to the edge lines of the bamboo forest; if the bamboo garden is nearly circular or elliptical, cells are radially arranged from the center to the edge of the bamboo forest, and the radiation angle is 30-35 degrees.

4. The gradual structure adjustment and renewal and rejuvenation method for a degenerated scattered bamboo garden as claimed in claim 1, wherein in step (2), after the division of the cells is completed, an isolation trench with a width of 20-24 cm and a depth of 25-30 cm is dug between adjacent cells.

5. The progressive structure adjustment and renewal rejuvenation method for a degenerated scattered bamboo orchard, as recited in claim 1, wherein in the step (3), the age of the bamboo is determined according to the comprehensive judgment of the colors of the bamboo leaves, twigs and stalks.

6. The progressive structure adjustment and renewal rejuvenation method for a degraded scattered bamboo garden as claimed in claim 1, wherein in step (5), the soil improvement is to adjust the acidity and alkalinity of the soil according to the previous bamboo forest exploration result, and if the pH value of the soil is less than 6.5, quick lime or calcium cyanamide is additionally applied, the quick lime is applied in a broadcasting way, the calcium cyanamide is applied in a hole way, the amount of the quick lime is 20-25 kg/mu, and the amount of the calcium cyanamide is 250-300 g/plant.

7. The progressive structure adjustment and renewal rejuvenation method for a degraded scattered bamboo garden as claimed in claim 1, wherein in step (5), the organic covering is organic matter with a thickness of 2-3 cm applied to the surface of the bamboo forest.

8. The progressive structure adjustment and renewal and rejuvenation method for a degenerate and scatter-grown bamboo orchard as claimed in claim 1, wherein in step (5), said intertillage weeding is carried out 3 or more times per year.

9. The progressive structural adjustment and renewal and rejuvenation method for a degraded scattered bamboo garden as claimed in claim 1, wherein in step (5), the irrigation and fertilization comprises two aspects of water regulation and fertility improvement; when the volume water content of the soil is lower than 30%, irrigation and water supplement are carried out; the fertility is improved to 4-5 months per year, soil topdressing is carried out on the bamboo forest, the topdressing mode is that 50-55 cm of furrows are dug around the bamboo stalks, the depth of the furrows is 20-25 cm, soil is covered and backfilled after application, and the type of the fertilizer is fully decomposed organic fertilizer or inorganic fertilizer.

10. The progressive structure adjustment and renewal and rejuvenation method for a degenerated scattered bamboo orchard, as claimed in claim 1, wherein the bamboo shoot control harvesting in step (6) is to selectively harvest bamboo shoots, so as to control the density of new bamboo shoots to be 18-20 plants per 100 square meters, and the density below the index is not harvested.