CN112586259A

CN112586259A - Winter cuttage seedling raising method for sympodial bamboos for bamboo shoots

Info

Publication number: CN112586259A
Application number: CN202011474303.9A
Authority: CN
Inventors: 徐振国; 梁晓静; 梁萍; 杨慧敏
Original assignee: Guangxi Zhuang Autonomous Region Forestry Research Institute
Current assignee: Guangxi Zhuang Autonomous Region Forestry Research Institute
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-04-02

Abstract

The invention discloses a winter cuttage seedling raising method for sympodial bamboos for bamboo shoots, which comprises the following working procedures of bamboo plexus management, greenhouse construction, branch collection, branch treatment, seedbed preparation, cuttage and management after cuttage. The method can fully utilize the bamboo branches for bamboo shoots to perform cuttage in winter, the cuttage survival rate reaches more than 90 percent, the winter cuttage survival rate of the sympodial bamboos for bamboo shoots is improved, the capability of resisting natural disasters is improved, the quality and the quantity of the bamboo shoots are ensured, and the method has good economic benefit, social benefit and ecological benefit.

Description

Winter cuttage seedling raising method for sympodial bamboos for bamboo shoots

Technical Field

The invention belongs to the technical field of plant vegetative propagation, and particularly relates to a clump bamboo shoot cuttage seedling culture method for bamboo shoots.

Background

Bamboo shoots, which are buds of bamboo, are regarded as 'rare food in vegetables' from ancient times, are traditional delicacies in China, are fragrant and crisp in taste, have certain medicinal value, have the effects of clearing heat, reducing phlegm, tonifying qi and harmonizing stomach, have the characteristics of low fat and multiple fibers, can promote gastrointestinal motility, have the effect of helping digestion, and can prevent intestinal and gastric cancers to a certain extent. Bamboo shoots have been eaten and cultivated for a long time, with a history of nearly 3000 years. Therefore, the sympodial bamboo for planting the bamboo shoots has the advantages of low investment, quick response, high benefit, and remarkable economic, ecological and social benefits. In recent years, introduction and cultivation are widely performed in rural areas. At present, the nursery stock supply of the sympodial bamboos for bamboo shoots is mostly planted by transplanting mother bamboos, and the propagation rate is extremely low. The cutting propagation is simple and easy to implement, is an important means for cultivating forest seedlings and one of important ways for quickly breeding bamboos, and the bamboo branches can independently grow into complete plants under proper conditions. The bamboo shoots grow vigorously by using the sympodial bamboos, the survival rate of the bamboo shoots is high and the bamboo shoots grow fast after being subjected to cuttage for 2-3 months, however, the cuttage by using the shoots of autumn or late autumn is always carried out from 11 months to the next 1 month, the bamboo plants enter the dormancy stage in winter, the photosynthesis is weakened, the rooting of cutting slips is influenced at low temperature even without rooting, the branch cutting seedlings are difficult to pass the winter, the seedlings are easy to die, and meanwhile, the transportation of nutrient substances is also influenced, so that the survival rate of the cuttage of the bamboo shoots by using the sympodial bamboos in winter is low, and the.

Disclosure of Invention

The invention overcomes the defects and provides the method for raising the seedling of the sympodial bamboo for the bamboo shoot by cutting in winter, which can fully utilize the bamboo branches for the bamboo shoot and improve the survival rate of the cuttage in winter.

In order to achieve the above object, the technical solution of the present invention is as follows:

a winter cuttage seedling raising method for sympodial bamboos for bamboo shoots comprises the procedures of bamboo plexus management, greenhouse construction, branch collection, branch treatment, seedbed preparation, cuttage and management after cuttage, wherein main branches or secondary branches which are strong in growth and have full hidden buds are collected as scion wood through management and protection of mother bamboos, the scion wood is subjected to chemical soaking treatment, cuttage is carried out in a built greenhouse from the middle ten days of 11 months to the last 12 months, the scion wood is subjected to cuttage in the seedbed in the greenhouse, and cuttage wood seedlings of the sympodial bamboos for bamboo shoots are obtained after the management procedures of heat preservation, disinfection, fertilization and weeding and soil loosening; the method mainly comprises the following steps:

(1) bamboo bundle management:

a. reasonably keeping the bamboo: selecting strong bamboo shoots without diseases and insect pests as mother bamboos for obtaining branches in the middle ten days of 8 months;

b. cutting off the top: in winter, after the bamboo shoots are formed into bamboos and before the leaves are grown, the upper parts of the bamboo shoots are cut off, and the main stalks are kept for 3-4 meters;

c. fertilizing: fertilizing the truncated mother bamboos 1 month after the next year, wherein 0.2kg of organic fertilizer is applied to each mother bamboo;

e. preventing and controlling diseases: ventilating bamboo stands according to a conventional method to prevent plant diseases and insect pests; if the occurrence of plant diseases and insect pests is found, spraying 50% volume concentration of insecticide, and spraying for one time within 10-15 days, wherein the spraying is carried out twice in each time; for plants with serious diseases and insect pests, the plants are cut off and burnt; the pesticide is a mixed solution of carbendazim and trichlorfon according to the volume ratio of 1: 1;

(2) and (3) constructing a greenhouse: the greenhouse is arranged north to south, occupies 2.7 meters of land and has a length of 10 meters; the rectangular pipe is arched, the arch height is 2.5 meters, a drainage ditch is made, a power supply is connected, and a lamp tube is installed;

(3) ear harvesting: selecting strong main branches or secondary branches with plump hidden buds from the truncated mother bamboos, cutting the main branches or the secondary branches off from the bases of the branches by sticking stalks with a knife, avoiding tearing branch roots and damaging root points as much as possible, and adopting the branches and the secondary branches as needed;

(4) ear treatment: removing shoot sheaths, trimming the collected branches, and soaking the base parts of the branches in a medicament solution for 120 min;

(5) preparing a seedbed: repairing a seedling bed in the greenhouse, wherein the width of the seedling bed is 1.2m, the height of the seedling bed is 30cm, and a passageway is reserved for 30 cm; bedding the seedling bed with stones or coarse sand, spreading a cuttage matrix in the seedling bed, applying well-stirred decomposed organic fertilizer, pesticide and bactericide in a mixing manner, spreading loess with the length of 10-20cm at the upper part, and spraying the same pesticide and bactericide to sterilize the loess;

(6) cuttage:

a. cutting time: cutting in the middle of 11 months to the last 12 months;

b. cutting is carried out immediately after the root is pulped;

c. the cuttage method comprises the following steps: burying the scion wood and the ground at an included angle of 30 degrees at a row spacing of 10cm multiplied by 20cm, inserting the scion wood into the cuttage matrix until only the third section of the branch is exposed, compacting the cuttage matrix around the scion wood, watering and thoroughly leaching, filling 3mL of 10mg/L ABT 2 solution into the exposed third bamboo joint, and sealing by a plastic film;

(7) managing after cuttage:

a. and (3) heat preservation: covering a greenhouse film on the built greenhouse, paving a thin quilt on the greenhouse film, covering the greenhouse film at night, rolling up the greenhouse film in the daytime, and opening a lamp tube day and night;

b. and (3) disinfection: spraying and disinfecting with 12.5% carbendazim solution every 10 days after cuttage, and spraying for 2-3 times;

c. fertilizing: fertilizing once every 20 days;

d. weeding and loosening soil: combined with intertillage weeding, the soil is loosened once every 30 days.

As further technical improvement, the seedling bed is also provided with an electric radiator and a humidifying device; the electric heating sheets are connected in series around the seedling bed; the humidifying device comprises a U-shaped buckle, a frame, a bottom plate, a lithium battery and a humidifier; the U-shaped buckle is connected with the top of the frame, and the bottom plate is connected with the bottom of the frame; the frame is provided with semiconductor thermoelectric generation sheets which are connected in series; the bottom plate is provided with a humidifier and a lithium battery connected with the semiconductor thermoelectric generation sheet; the humidifier is connected with the lithium battery through a lead; the top of the humidifier is connected with a spray head through a pipeline. During the use, the U type is detained and is put the frame clamp on the electric heater piece, the insulating ceramic wafer in the N type semiconductor on the semiconductor thermoelectric generation piece and the P type semiconductor outside contacts with the high temperature electric heater piece that the heating generates heat respectively, the insulating ceramic wafer of semiconductor thermoelectric generation piece opposite side contacts with indoor air, the difference in temperature that utilizes the insulating ceramic wafer of semiconductor thermoelectric generation piece both sides face to produce takes place, and in the electric energy storage to the lithium cell with producing, the lithium cell passes through the wire and connects the humidifier, for the humidifier provides its work of electric energy supply, keep growing seedlings the air humidity around the bed.

As a further technical improvement, the lamp tube installed in the greenhouse is an incandescent lamp with power of 3000W, and one incandescent lamp is installed every 2m × 3 m. The temperature in the greenhouse is kept at 25-27 ℃ when the greenhouse is matched with a seedling bed.

As a further technical improvement, the pruning method of the branch in the step (4) is to cut the branch into a horse ear shape by a knife at the position 2cm above the uppermost section of the branch so as to irrigate water during cuttage.

As a further technical improvement, the medicament solution in the step (4) is prepared by mixing indole-3-acetic acid (IAA), naphthylacetic acid (NAA), gibberellin and lanthanum nitrate (La (NO)₃)³·6H₂Preparing mixed solution of 1500-2000 mg/L of O), salicylic acid and tung oil according to the mass ratio of 5: 1: 2: 1: 0.2, and then adding 0.5% of polyporus frondosus solution by volume concentration; the solution of the agent is maintained at 25 ℃ by a water bath during use.

As a further technical improvement, the cutting substrate is prepared by uniformly mixing clean fresh yellow core soil, clean river sand and decomposed oyster mushroom residues according to the volume ratio of 3: 1.

As a further technical improvement, the pulp root in the step (6) is prepared by mixing yellow core soil and water at 30 ℃ into pasty slurry.

As a further technical improvement, the fertilizers applied in the step (1) and the step (7) are both compound fertilizers with the ratio of N to P to K being 20 to 10; the organic fertilizer in the step (5) is a biological organic fertilizer, wherein the organic matter accounts for 46 percent, the N + P + K accounts for 6 percent, the effective viable count is 0.2 hundred million/g, and the humic acid accounts for 19 percent.

Compared with the prior art, the invention has the advantages and beneficial effects as follows:

1. the greenhouse is built, the heat preservation performance is good, the temperature of the seedling culture environment is kept, the bamboo shoots for the bamboo shoots can be fully utilized for cuttage in winter, the cuttage survival rate reaches over 90 percent, the cuttage survival rate of the sympodial bamboos for the bamboo shoots in winter is improved, the capability of resisting natural disasters is improved, the quality and the quantity of the bamboo shoots are ensured, and the greenhouse has good economic benefit, social benefit and ecological benefit.

2. The seedling bed has the functions of heating and moisturizing, the temperature difference between the two sides of the semiconductor temperature difference power generation sheet is used for power generation, the generated electric energy is stored in the lithium battery, the energy is saved, the environment is protected, the electric energy can be provided for the humidifier for a long time, the humidity in the greenhouse is kept, a good seedling environment is provided for cuttage seedlings, the growth of seedlings is promoted, and the cuttage survival rate of the clustered bamboo shoots for bamboo shoots in winter is further improved.

3. The invention carries out medicament soaking treatment on the scion, the used medicament is a rooting agent which is selected in proper proportion according to the growth characteristics of the sympodial bamboos for bamboo shoots, thus effectively avoiding the problems of too fast cell differentiation and vigorous physiological metabolic activity of the sympodial bamboos for bamboo shoots caused by single use of the rooting agent, and solving the problems of serious callus, poor root system quality, low later-stage survival rate or slow rooting; meanwhile, lanthanum nitrate is added into the agent, so that the nitrogen content of the sympodial bamboo for bamboo shoots as a high-nitrogen growth demand variety is met, and the root differentiation forming capability of a plant growth agent can be effectively improved by matching the mineral substance with the growth agent, so that the occurrence of the nutrient deficiency of the cutting seedlings is avoided; the added salicylic acid and the rooting hormone gibberellin also have the function of regulating the physiological activity of the sympodial bamboos for bamboo shoots, and the stress resistance of plants is improved; the tung oil in the agent is helpful for keeping the temperature of the agent, has the effects of moisturizing and sterilizing, obviously improves the adaptability of the cutting seedlings, and is more beneficial to cutting treatment in winter.

4. The invention adopts the serous root for the scion wood and then carries out cuttage immediately, thereby not only ensuring that the stump of the branch can obtain the maximum water, but also ensuring the pesticide effect after the stump is soaked by using a reagent solution, and improving the cuttage rooting rate and the survival rate of the nursery stock.

Drawings

Fig. 1 is a schematic structural view of a seedling bed of the present invention.

The attached drawings are as follows:

1-seedling raising bed, 2-electric heater, 3-U-shaped button, 4-frame, 5-semiconductor thermoelectric generation piece, 6-bottom plate, 7-humidifier, 8-lithium battery and 9-spray head.

Detailed Description

The present invention will be further described with reference to the following examples.

Example 1:

a winter cutting seedling method of sympodial bamboos for bamboo shoots mainly comprises the following steps:

(1) bamboo bundle management:

c. fertilizing: fertilizing the truncated mother bamboos 1 month after the next year, wherein 0.2kg of organic fertilizer is applied to each mother bamboo; the applied fertilizer is a compound fertilizer with the weight ratio of N, P, K to 20, 10 and 10;

(2) and (3) constructing a greenhouse: the greenhouse is arranged north to south, occupies 2.7 meters of land and has a length of 10 meters; the rectangular pipe is arched, the arch height is 2.5 meters, a drainage ditch is made, a power supply is connected, and a lamp tube is installed; the lamp tube installed on the greenhouse is an incandescent lamp with power of 3000W, and one incandescent lamp is installed every 2m by 3 m; the temperature in the greenhouse is kept at 25-27 ℃ when the plant cultivation bed is matched with a seedling bed;

(4) ear treatment: removing shoot sheaths, trimming the collected branches, and soaking the base parts of the branches in a medicament solution for 120 min; the pruning method is to cut the branches into a horse ear shape by a knife at the 2cm position of the upper part of the uppermost section of the branches so as to irrigate water during cuttage; the medicinal solution is prepared from indole-3-acetic acid (IAA), naphthylacetic acid (NAA), gibberellin, and lanthanum nitrate (La (NO)₃)³·6H₂O), salicylic acid and tung oil are prepared into 1500mg/L mixed solution according to the mass ratio of 5: 1: 2: 1: 0.2, and then 0.5 percent of polyporus frondosus solution in volume concentration is added; the medicament solution is kept at 25 ℃ through a water bath when in use;

(5) preparing a seedbed: repairing a seedling bed in the greenhouse, wherein the width of the seedling bed is 1.2m, the height of the seedling bed is 30cm, and a passageway is reserved for 30 cm; bedding the seedling bed with stones or coarse sand, spreading a cuttage matrix in the seedling bed, applying well-stirred decomposed organic fertilizer, pesticide and bactericide in a mixing manner, spreading loess with the length of 10-20cm at the upper part, and spraying the same pesticide and bactericide to sterilize the loess; the organic fertilizer is a biological organic fertilizer, wherein organic matters account for 46 percent, N + P + K accounts for 6 percent, the number of effective viable bacteria is 0.2 hundred million/g, and humic acid accounts for 19 percent;

the cutting substrate is formed by uniformly mixing clean fresh yellow core soil, clean river sand and decomposed oyster mushroom residues according to the volume ratio of 3: 1;

(6) cuttage:

a. cutting time: cutting in the middle of 11 months to the last 12 months;

b. cutting is carried out immediately after the root is pulped; the serous root is prepared by mixing yellow core soil and water at 30 ℃ into pasty slurry;

(7) managing after cuttage:

c. fertilizing: fertilizing once every 20 days; the applied fertilizer is a compound fertilizer with the weight ratio of N, P, K to 20, 10 and 10;

The seedling bed 1 is also provided with an electric radiator 2 and a humidifying device; the electric heating pieces 2 are connected in series around the seedling bed 1; the humidifying device comprises a U-shaped buckle 3, a frame 4, a bottom plate 6, a lithium battery 8 and a humidifier 7; the U-shaped buckle 3 is connected with the top of the frame 4, and the bottom plate 6 is connected with the bottom of the frame 4; the frame 4 is provided with semiconductor thermoelectric generation sheets 5 which are connected in series; the bottom plate 6 is provided with a humidifier 7 and a lithium battery 8 connected with the semiconductor thermoelectric generation sheet 5; the humidifier 7 is connected with a lithium battery 8 through a lead; the top of the humidifier 7 is connected with a spray head 9 through a pipeline. During the use, U type is detained 3 and is buckled frame 4 clamp on electric heater piece 2, the insulating ceramic wafer in the N type semiconductor on the semiconductor thermoelectric generation piece 5 and the P type semiconductor outside contacts with the high temperature electric heater piece 2 that the heating generates heat respectively, the insulating ceramic wafer of semiconductor thermoelectric generation piece 5 opposite side contacts with indoor air, utilize the difference in temperature that the insulating ceramic wafer of semiconductor thermoelectric generation piece 5 both sides face produced to send out some, and in the electric energy storage lithium cell 8 with producing, lithium cell 8 passes through the wire and connects humidifier 7, supply its work of electric energy supply for humidifier 7, keep educating the air humidity around the bed 1.

Example 2:

(1) bamboo bundle management:

(4) ear treatment: removing shoot sheaths, trimming the collected branches, and soaking the base parts of the branches in a medicament solution for 120 min; the pruning method is that the uppermost section of the branch is trimmedCutting 2cm from the upper part into a horse ear shape by a knife so as to facilitate watering during cuttage; the medicinal solution is prepared from indole-3-acetic acid (IAA), naphthylacetic acid (NAA), gibberellin, and lanthanum nitrate (La (NO)₃)³·6H₂O), salicylic acid and tung oil are prepared into 1800mg/L mixed solution according to the mass ratio of 5: 1: 2: 1: 0.2, and then the solution of the polyporus frondosus with the volume concentration of 0.5 percent is added; the medicament solution is kept at 25 ℃ through a water bath when in use;

(6) cuttage:

a. cutting time: cutting in the middle of 11 months to the last 12 months;

(7) managing after cuttage:

Example 3:

(1) bamboo bundle management:

(4) ear treatment: removing shoot sheaths, trimming the collected branches, and soaking the base parts of the branches in a medicament solution for 120 min; the pruning method is to cut the branches into a horse ear shape by a knife at the 2cm position of the upper part of the uppermost section of the branches so as to irrigate water during cuttage; the medicinal solution is prepared from indole-3-acetic acid (IAA), naphthylacetic acid (NAA), gibberellin, and lanthanum nitrate (La (NO)₃)³·6H₂O), salicylic acid and tung oil are prepared into 2000mg/L mixed solution according to the mass ratio of 5: 1: 2: 1: 0.2, and then 0.5 percent of polyporus frondosus solution in volume concentration is added; the medicament solution is kept at 25 ℃ through a water bath when in use;

(6) cuttage:

a. cutting time: cutting in the middle of 11 months to the last 12 months;

(7) managing after cuttage:

Comparative example 1:

the difference from the embodiment 1 is that when the greenhouse is built, the greenhouse is arranged in the north to south direction, the occupied land width is 2.7 meters, and the length is 10 meters; the rectangular tube is arched, the arch height is 2.5 meters, a drainage ditch is made, and two incandescent lamp tubes are arranged in the shed and only used for illumination; the seedling bed repaired in the greenhouse has no heating or moisturizing structure. The rest of the procedure was the same as in example 1.

Comparative example 2:

the difference from the example 1 is that the agent solution used in the ear treatment of the step (4) is 1500mg/L indole-3-acetic acid (IAA) solution, and then 0.5% by volume of the solution of the prodigiosin is added; the solution of the agent is maintained at 25 ℃ by a water bath during use. The rest of the procedure was the same as in example 1.

Comparative example 3:

the difference from the example 1 is that the agent solution used in the treatment of the scion in the step (4) is naphthylacetic acid (NAA) of 1500mg/L, and then 0.5% by volume concentration of the solution of the prodigiosin is added; the solution of the agent is maintained at 25 ℃ by a water bath during use. The rest of the procedure was the same as in example 1.

Comparative example 4:

the difference from the embodiment 1 is that the cutting in the step (6) does not need the root pulp, the treated scion wood is directly cut in the prepared seedbed, and the rest steps are the same as the embodiment 1.

According to the method of the above examples and comparative examples, the rooting rate was observed and counted after 90 days of cutting, and the specific results are shown in table 1, wherein the rooting rate is (number of rooted single plants/total number of cuttings in the group) × 100%.

TABLE 1 rooting percentage obtained by raising seedlings of sympodial bamboos for bamboo shoots by cutting in winter according to the methods of examples 1 to 3 and comparative examples 1 to 4

	Example 1	Example 2	Example 3	Comparative example 1	Comparative example 2	Comparative example 3	Comparative example 4
								Rooting percentage (%)	96.7	95.8	96.1	70.6	73.8	71.6	82.9

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A winter cuttage seedling raising method for sympodial bamboos for bamboo shoots is characterized by comprising the following steps: the method comprises the following steps of bamboo grove management, greenhouse construction, branch collection, branch treatment, seedbed preparation, cuttage and post-cuttage management, wherein mother bamboos are managed and protected, main branches or secondary branches which grow robustly and have full hidden buds are collected as scion wood, the scion wood is subjected to chemical soaking treatment, cuttage is carried out in a built greenhouse from the middle ten days of 11 months to the last 12 months, the scion wood is planted in the seedbed in the greenhouse, and cuttage wood seedlings of the sympodial bamboos for bamboo shoots are obtained after the management steps of heat preservation, disinfection, fertilization, weeding and soil loosening; the method mainly comprises the following steps:

(1) bamboo bundle management:

(6) cuttage:

a. cutting time: cutting in the middle of 11 months to the last 12 months;

b. cutting is carried out immediately after the root is pulped;

(7) managing after cuttage:

c. fertilizing: fertilizing once every 20 days;

2. The winter cutting seedling method of sympodial bamboo for bamboo shoots as claimed in claim 1, characterized in that: the seedling bed (1) is also provided with an electric radiator (2) and a humidifying device; the electric heating sheets (2) are connected in series around the seedling bed (1); the humidifying device comprises a U-shaped buckle (3), a frame (4), a bottom plate (6), a lithium battery (8) and a humidifier (7); the U-shaped buckle (3) is connected with the top of the frame (4), and the bottom plate (6) is connected with the bottom of the frame (4); the framework (4) is provided with semiconductor thermoelectric generation sheets (5) which are connected in series; the bottom plate (6) is provided with a humidifier (7) and a lithium battery (8) connected with the semiconductor thermoelectric generation sheet (5); the humidifier (7) is connected with the lithium battery (8) through a lead; the top of the humidifier (7) is connected with a spray head (9) through a pipeline.

3. The winter cutting seedling method of sympodial bamboo for bamboo shoots as claimed in claim 1, characterized in that: the lamp tube installed on the greenhouse is an incandescent lamp with power of 3000W, and one incandescent lamp is installed every 2m by 3 m; the temperature in the greenhouse was maintained at 25 ℃.

4. The winter cutting seedling method of sympodial bamboo for bamboo shoots as claimed in claim 1, characterized in that: and (4) pruning the branches by cutting the branches into a horse ear shape at a position 2cm above the uppermost section of the branches so as to irrigate water during cuttage.

5. The winter cutting seedling method of sympodial bamboo for bamboo shoots as claimed in claim 1, characterized in that: the medicament solution in the step (4) is prepared by mixing indole-3-acetic acid (IAA), naphthylacetic acid (NAA), gibberellin and lanthanum nitrate (La (NO)₃)³.6H₂Preparing mixed solution of 1500-2000 mg/L of O), salicylic acid and tung oil according to the mass ratio of 5: 1: 2: 1: 0.2, and then adding 0.5% of polyporus frondosus solution by volume concentration; the solution of the agent is maintained at 25 ℃ by a water bath during use.

6. The winter cutting seedling method of sympodial bamboo for bamboo shoots as claimed in claim 1, characterized in that: the cutting matrix is formed by uniformly mixing clean fresh yellow core soil, clean river sand and decomposed oyster mushroom residues according to the volume ratio of 3: 1.

7. The winter cutting seedling method of sympodial bamboo for bamboo shoots as claimed in claim 1, characterized in that: and (6) the serous root is prepared by mixing yellow core soil and water with the temperature of 30 ℃ into pasty slurry.

8. The winter cutting seedling method of sympodial bamboo for bamboo shoots as claimed in claim 1, characterized in that: the fertilizers applied in the steps (1) and (7) are both compound fertilizers with N: P: K =20:10: 10; the organic fertilizer in the step (5) is a biological organic fertilizer, wherein the organic matter accounts for 46 percent, the N + P + K accounts for 6 percent, the effective viable count is 0.2 hundred million/g, and the humic acid accounts for 19 percent.