CN103404349B - Cultivation method for dwarf potted rixianggui (variety of sweet-scented osmanthus) - Google Patents

Abstract

The invention relates to a method for cultivating dwarf potted Japanese osmanthus. With the development of urbanization, there are many high-rise buildings, and the residents of the buildings have an increasing demand for beautiful, easy-to-raise, and famous flowers to be transplanted into pots for indoor cultivation and appreciation. The evolution of technology is imperative. The object of the present invention is to provide a dwarf type potted cultivation method of Japanese osmanthus, which realizes indoor potted planting of Japanese osmanthus, significantly prolongs the flowering period, and greatly improves the ornamental value and economic value of Japanese osmanthus. The technical scheme of the present invention is: a cultivation method of dwarf potted Japanese osmanthus, comprising the following sequential steps: cutting propagation; seedling transplantation; seedling cutting; and potting the seedling. The invention realizes the ornamental potted plant of the Japanese osmanthus, significantly prolongs the flowering period, and greatly improves the ornamental value and economic value of the Japanese osmanthus.

Description

A kind of cultivation method of dwarf potted Japanese osmanthus

technical field

The invention relates to a method for dwarfing flowers, in particular to a method for cultivating dwarfed potted Japanese osmanthus.

Background technique

Osmanthus fragrans is one of the top ten famous flowers in China, and Japanese osmanthus is one of the rare varieties. It has luxuriant branches and leaves, long flowering period and large amount of flowers. It blooms continuously all year round, and the flowering period can reach more than 260 days. The length of its flowering period is unique among flowers. Domestic research on sweet-scented osmanthus mainly focuses on the investigation, classification and evaluation of variety resources, as well as breeding and application. Its cultivation is still limited to the ground planting model, and the degree of product market development is low. With the development of urbanization, there are many high-rise buildings, and the residents of the buildings have an increasing demand for beautiful, easy-to-raise, and famous flowers to be transplanted into pots for indoor cultivation and appreciation. The evolution of technology is imperative. Most domestic osmanthus varieties are mainly planted in the ground. The seedlings generally grow tall after many years, and it is difficult to adapt to potted plants. At the same time, the flowering period is short and only blooms in autumn. It is difficult to meet the growing consumption of potted plants as New Year's Eve flowers, and it is even more difficult to reach export. requirements. Therefore, the research on the dwarfing technology of Japanese osmanthus potted plants has far-reaching significance to promote the overall production and management level of the domestic horticultural industry, expand the application range of osmanthus fragrans, and expand the domestic and international consumer markets.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a method for cultivating dwarfed potted Japanese osmanthus, which realizes the indoor potted viewing of Japanese osmanthus, significantly prolongs the flowering period, and greatly improves the ornamental value and quality of Japanese osmanthus. Economic Value.

For realizing the purpose of the present invention, the technical scheme that adopts is:

A kind of cultivation method of dwarf type potted Japanese osmanthus, the cultivation method comprises the following sequential steps, cutting propagation, seedling transplantation, seedling cutting and drying, seedling potting:

(1) Cutting propagation: first prepare the cutting bed, the mother plant chooses healthy plants that are healthy and healthy for 3-6 years without diseases and insect pests, and the cuttings are taken from the middle and upper part of the canopy, facing the sun, semi-lignified branches that are strong and free of diseases and insect pests; the cuttings are selected at 5 From January to June, the cuttings are carried out before 10:00 am, after 3:00 pm or on cloudy days. After the cuttings are completed, cover the bed with plastic film, manage water and fertilizer, and control temperature and humidity;

(2) Transplanting of young seedlings: The cut seedlings are removed from the shade shed in October, and transplanted in the field nursery when the weather is cloudy or cloudy and the soil is wet in March-April of the following year. The slightly acidic sandy soil with humus is used as the cultivation nursery soil, and the cultivation nursery soil has a pH of 5.5-6.5; post-planting management includes water and fertilizer management, soil loosening, weeding, pruning, and pest control;

(3) Seedling cutting: After three years of transplanting and cultivating the cutting seedlings in the open field, when the diameter of the seedling reaches 2-3cm, the cutting can be carried out. The cutting of the seedling is divided into three times: the first cutting: from the end of February to the beginning of March , leaving only 20-30cm of the main trunk; the second cut: in May, when the first cut out branch grows 6 leaves, remove the terminal bud and promote the side bud, so that each branch can produce 2 branch; cut off for the third time: in August, when the branch cut off for the second time grows 6 leaves again, the terminal bud is removed, and the lateral bud is promoted;

(4) Seedlings are potted:

Potted and transplanted: From the end of August to the beginning of September, choose the Japanese osmanthus plants with strong growth and high ornamental value for potting. The pots should be glazed pots, purple sand pots or plastic pots, and small plants should not be planted in large pots; Cover the drainage hole at the bottom of the pot and cover with a small amount of coarse sand, then fill 1/3 of the substrate in the container, put the seedlings in the middle of the container, add a solid substrate, and the substrate is 1.0cm away from the container mouth. The proportion of colonizing soil is 1:1, and the water is poured thoroughly after being placed in the pot; it is placed in a plastic greenhouse, and the temperature in the shed is controlled at about 20°C;

Potted plant management: In line with the principle of "never dry or water, water thoroughly", the pot soil should not be too wet or waterlogged; during the growth period of new shoots, fertilize in time, and use 0.3% potassium dihydrogen phosphate to topdress the roots Prune some branches that affect the ornamental effect; the pest control method adopts 8% abamectin EC 4000-6000 times or 5% flubenzuron EC 1500-2000 times, and sprays once every 10-15 days at the initial stage of insect pests. Spray 2 to 3 times.

Further, the slotting bed is selected in leeward, sunny, flat land, thick plow layer, acidic or slightly acidic yellow soil that is good for drainage; when preparing the slotting bed, spread rice husk ash on the bed surface to make a slotting bed with a width of 120 cm and a height of 20 cm. Two beds Set up a drainage ditch with a width of 30 cm and a depth of 20 cm between them. At the same time, a circular drainage ditch with a width of 40 cm and a depth of 30 cm is established around the cutting bed. Or spray with 500 times liquid of 50% carbendazim wettable powder, and seal the sterilized cutting bed with a plastic film for 4 days before uncovering it for use.

Further, build a 2.5m-high shade shed around the slotting bed before cutting, and lay black nylon nets with 70%-80% shading degree on the roof and around the shed.

Further, the cutting bed should be poured with sufficient water before cutting, pinch the middle part of the cuttings with the index finger and thumb, insert the cuttings into the soil 3-4cm, and press the soil around the cuttings tightly. Row spacing is appropriate. If there are some tender branches, you can use bamboo sticks to punch holes before inserting. After inserting a small piece, water and moisturize. Spray thiophanate-methyl wettable powder once to prevent diseases and insects. After cutting, build an arched frame with bamboo strips at a distance of 70cm from the slotting bed, cover it with a 0.02mm thick plastic film, and compact the surrounding of the film with moist soil. ,seal.

Further, the length of the cuttings is controlled at 8-10cm, the lower leaves are removed, and the upper 2 leaves are kept, the upper cut is cut flat, 5mm-7mm away from the buds, the lower cut is cut obliquely, 5mm away from the buds, and the cut Rixianggui Align the lower ends of the cuttings, quickly dip them in 500mg/L-800mg/L α-naphthalene acetic acid for 3-5s or soak in 100mg/L rooting powder for 1.5h, and dip the base 3-4cm.

Further, after the cuttings are completed, carry out post-cutting management: pour water thoroughly after cutting, cover the surrounding area of the plastic film, do not water within one month, keep the relative humidity in the film at about 90%, and control the temperature at 18-28°C. Remove the film after the wound tissue is formed; spray 2000 times carbendazim solution once every 7 days after inserting; after rooting, spray 0.3% potassium dihydrogen phosphate every 10 days after the leaves are dried in the evening Add 0.1% urea, or special liquid fertilizer for seedlings; winter management: when the minimum outdoor temperature is ≤5°C, the seedbed is covered with a second film.

Further, when the seedlings are transplanted in step (2), they should be watered thoroughly before excavation, and the seedlings should be raised when the soil is moist and not bonded. At the root neck, gently lift the seedlings with your hands to stretch the root system, and then compact them. After planting, pour the root-fixing water thoroughly. During the process of raising seedlings, keep more roots and less damage to roots. Plant as soon as possible after picking seedlings, and pay attention to moisturizing , to prevent dehydration of seedlings.

Further, when transplanting the seedlings in step (2), the nursery was fully reclaimed once in the autumn and winter of the previous year, and the holes were dug according to the specifications of the plant row spacing 1m×1.5m and the planting hole 0.5m×0.5m×0.5m. After 2 years, when it grows thicker and taller, it can be removed every other plant, and the row spacing becomes 2m×1.5m, and 2-3kg of decomposed farmyard manure is applied to each hole, and 10g of phosphate fertilizer is used as base fertilizer. Apply the fertilizer after mixing well. After the fertilizer is fermented in autumn and winter, it is easy to be absorbed by the seedlings.

Further, the post-planting management of seedling transplantation includes water and fertilizer management, loosening the soil, weeding, pruning, and pest control:

Water and fertilizer management: water every 3-4 days after transplanting, watering at 8-10 am or _3-5 pm, and pay attention to watering thoroughly, repeat 2-3 times for each watering; fertilize 3 times a year , from late March to early April, spray N:P:K (1: ₁ :1) compound fertilizer every 10 days, and spray 3-5 times in total; shoots; apply quick-acting phosphorus and potassium fertilizers with a concentration of 0.1%-0.3% in early July to improve the drought resistance of seedlings; apply farmyard manure 0.5kg/plant in October to improve their winter cold resistance;

Soil loosening and weeding: loosening soil and weeding 3-4 times a year, covering the ground with grass to prevent drought before summer drought;

Plastic pruning: Rixianggui can take out shoots many times in spring and autumn, and pruning should be carried out in time, mainly thinning branches. The main trunk should be cultivated in the first 1-3 years, and weak branches, diseased branches, leggy branches, and parallel branches should be cut off to improve Under the condition of ventilation and light transmission, timely remove the sprouting branches from the base of the trunk;

Prevention and control of pests and diseases: The main pests and diseases of osmanthus are anthracnose, leaf spot, spider mite, etc., pay attention to prevent and control with thiophanate-methyl, Bordeaux mixture, and carbendazim.

The present invention proposes a dwarf type potted cultivation method of Japanese osmanthus through the research on cutting, shaping and pruning related technologies of Japanese osmanthus, which not only solves the problem of poor survival rate of Japanese osmanthus in the cutting process of conventional nurseries. Ideal, the quality of seedlings is not high, and the root system is not developed enough, and it provides relevant reference for the pruning of sweet-scented osmanthus, and realizes the indoor potted viewing of Japanese osmanthus, greatly prolonging the viewing period, and improving the viewing and economical performance of Japanese osmanthus value.

Detailed ways

Below in conjunction with specific embodiment the present invention is described in detail:

A method for cultivating dwarf potted Japanese osmanthus, comprising the following sequential steps, cutting propagation, seedling transplantation, seedling cutting, and seedling potting:

(1) Cutting propagation: first prepare the slotting bed, and the slotting bed is selected in acidic or slightly acidic yellow soil that is leeward, sunny, flat, thick, and good for drainage; when preparing the slotting bed, spread rice husk ash on the bed surface and make it 120 cm wide. , a 20cm high slotting bed, a drainage ditch with a width of 30 cm and a depth of 20 cm is set between the two beds, and a circular drainage ditch with a width of 40 cm and a depth of 30 cm is set around the cutting bed. Spray with 600 times liquid of thiophanate wettable powder or 500 times liquid of 50% carbendazim wettable powder, and seal the sterilized cutting bed with a plastic film for 4 days before uncovering it for use. Before cutting, build a 2.5m-high shade shed around the slotting bed, and lay a black nylon net with 70%-80% shading degree on the roof and around it. The mother plant is selected as a healthy plant that grows robustly and has no pests and diseases for 3-6 years. The cuttings are taken from the middle and upper part of the canopy, facing the sun, and semi-lignified branches that grow robustly and without pests and diseases in that year; the length of the cuttings is controlled at 8-10cm, and the lower leaves are removed. Cut the upper 2 leaves horizontally, 5mm-7mm away from the buds, cut obliquely at the bottom, 5mm away from the buds, align the lower ends of the cut Rixianggui cuttings, and use 500mg/L-800mg/L of α-naphthalene Quickly dip in acetic acid for 3-5s or soak in 100mg/L rooting powder for 1.5h, and immerse the base for 3-4cm. The cutting bed should be poured with enough water before cutting, pinch the middle part of the cutting with the index finger and thumb, insert the cutting into the soil 3-4cm, and press the soil around the cutting, the cutting density should not overlap between the leaves, and the row spacing of 5×10cm is If there are some tender branches, you can use bamboo sticks to punch holes before inserting. After inserting a small piece, water and moisturize it. After the entire seedbed is cut, water it thoroughly. Use 70% Spray thiophanate-methyl wettable powder once to prevent diseases and insects. After cutting, build an arched frame with bamboo strips at a distance of 70cm from the slotting bed, cover it with a 0.02mm thick plastic film, and compact the surrounding of the film with moist soil. ,seal. The cuttings are selected from May to June, and the cuttings are carried out before 10 am, after 3 pm or on cloudy days.

After the cuttings are completed, cover the bed with a plastic film and perform post-insertion management: water thoroughly after cuttings, cover the plastic film around, do not water within one month, keep the relative humidity in the film at about 90%, and control the temperature at 18 -28°C, remove the film after the callus is formed; spray 2000 times carbendazim solution once every 7 days after inserting; after rooting, spray 0.3 % potassium dihydrogen phosphate plus 0.1% urea, or special liquid fertilizer for seedlings; winter management: when the minimum outdoor temperature is ≤5°C, the seedbed is covered with secondary film.

(2) Transplanting of young seedlings: The cut seedlings are removed from the shade shed in October, and transplanted in the field nursery when the weather is cloudy or cloudy and the soil is wet in March-April of the following year. The slightly acidic sandy soil with humus is used as the cultivation nursery soil, and the cultivation nursery soil has a pH of 5.5-6.5. Before digging the seedlings, water them thoroughly, and raise the seedlings when the soil is moist and not sticky. Before planting, remove the lower side branches and excessive root systems of the seedlings. When planting, straighten the seedlings, bury the soil to the root neck, and gently lift the seedlings by hand. Stretch the root system, and then compact it. After planting, water the roots thoroughly. During the process of raising seedlings, keep more roots and less damage to roots. When transplanting seedlings, reclaim the nursery once in the autumn and winter of the previous year. Dig the holes according to the specifications of plant row spacing 1m×1.5m and planting holes 0.5m×0.5m×0.5m. After 2 years, wait for them to grow thicker and taller. Every other plant can be removed every other time, and the row spacing becomes 2m×1.5m. Apply 2-3kg of decomposed farmyard manure to each hole, and 10g of phosphate fertilizer as the base fertilizer. Mix the topsoil with the farmyard manure and apply it. Fermentation, easy to be absorbed by seedlings.

The post-planting management of seedling transplantation includes water and fertilizer management, loosening the soil, weeding, pruning, and pest control:

Water and fertilizer management: water every 3-4 days after transplanting, water at 8-10 in the morning or 3-5 in the evening, and pay attention to watering thoroughly, repeat 2-3 times for each watering; fertilize 3 times a year From late March to early April, the compound fertilizer of N:P:K (1:1:1) was sprayed every 10 days for a total of 3-5 times; shoots; apply quick-acting phosphorus and potassium fertilizers with a concentration of 0.1%-0.3% in early July to improve the drought resistance of seedlings; apply farmyard manure 0.5kg/plant in October to improve their winter cold resistance;

Soil loosening and weeding: loosening soil and weeding 3-4 times a year, covering the ground with grass to prevent drought before summer drought;

Plastic pruning: Rixianggui can take out shoots many times in spring and autumn, and pruning should be carried out in time, mainly thinning branches. The main trunk should be cultivated in the first 1-3 years, and weak branches, diseased branches, leggy branches, and parallel branches should be cut off to improve Under the condition of ventilation and light transmission, timely remove the sprouting branches from the base of the trunk;

Prevention and control of pests and diseases: The main pests and diseases of osmanthus are anthracnose, leaf spot, spider mite, etc., pay attention to prevent and control with thiophanate-methyl, Bordeaux mixture, and carbendazim.

(3) Seedling cutting: After three years of transplanting and cultivating the cutting seedlings in the open field, when the diameter of the seedling reaches _2-3cm , the cutting can be carried out. The cutting of the seedling is divided into three times: the first cutting: from the end of February to the beginning of March , leaving only 20-30cm of the main trunk; the second cut: in May, when the first cut out branch grows 6 leaves, remove the terminal bud and promote the side bud, so that each branch can produce 2 branch; cut off for the third time: in August, when the branch cut off for the second time grows 6 leaves again, the terminal bud is removed, and the lateral bud is promoted;

(4) Seedlings are potted:

Potted and transplanted: From the end of August to the beginning of September, choose the Japanese osmanthus plants with strong growth and high ornamental value for potting. The pots should be glazed pots, purple sand pots or plastic pots, and small plants should not be planted in large pots; Cover the drainage hole at the bottom of the pot and cover with a small amount of coarse sand, then fill 1/3 of the substrate in the container, put the seedlings in the middle of the container, add a solid substrate, and the substrate is 1.0cm away from the container mouth. The proportion of colonizing soil is 1:1, and the water is poured thoroughly after being placed in the pot; it is placed in a plastic greenhouse, and the temperature in the shed is controlled at about 20°C;

Potted plant management: In line with the principle of "never dry or water, water thoroughly", the pot soil should not be too wet or waterlogged; during the growth period of new shoots, fertilize in time, and use 0.3% potassium dihydrogen phosphate to topdress the roots Prune some branches that affect the ornamental effect; disease and pest control methods use 8% abamectin EC 4000-6000 times or 5% flubenzuron EC 1500-2000 times, spray once every 10-15 days in the early stage of pest damage , Spray 2 to 3 times in total.

The Japanese osmanthus potted plant obtained according to the above cultivation method realizes the indoor potted plant ornamental of the Japanese osmanthus, prolongs the flowering period to 260 days/year, and greatly improves the ornamental value and economic value of the osmanthus japonica.

Claims (8)

1. a kind of cultivation method of dwarf type potted Japanese sweet osmanthus, it is characterized in that: cultivation method comprises following sequential steps, cuttage propagation, seedling transplantation, nursery stock is cut and dried, and nursery stock is put into pots: (1) Cutting propagation: first prepare the cutting bed, the mother plant chooses healthy plants that are healthy and healthy for 3-6 years without diseases and insect pests, and the cuttings are taken from the middle and upper part of the canopy, facing the sun, semi-lignified branches that are strong and free of diseases and insect pests; the cuttings are selected at 5 From January to June, the cuttings are carried out before 10:00 am, after 3:00 pm or on cloudy days. After the cuttings are completed, cover the bed with plastic film, manage water and fertilizer, and control temperature and humidity; (2) Transplanting of young seedlings: The cut seedlings are removed from the shade shed in October, and transplanted in the field nursery when the weather is cloudy or cloudy and the soil is wet in March-April of the following year. The slightly acidic sandy soil with humus is used as the cultivation nursery soil, and the cultivation nursery soil has a pH of 5.5-6.5; post-planting management includes water and fertilizer management, soil loosening, weeding, pruning, and pest control; (3) Seedling cutting: After three years of transplanting and cultivating the cutting seedlings in the open field, when the diameter of the seedling reaches 2-3cm, the cutting can be carried out. The cutting of the seedling is divided into three times: the first cutting: from the end of February to the beginning of March , leaving only 20-30cm of the main trunk; the second cut: in May, when the first cut out branch grows 6 leaves, remove the terminal bud and promote the side bud, so that each branch can produce 2 branch; cut off for the third time: in August, when the branch cut off for the second time grows 6 leaves again, the terminal bud is removed, and the lateral bud is promoted; (4) Seedlings are potted: Potted and transplanted: From the end of August to the beginning of September, choose the Japanese osmanthus plants with strong growth and high ornamental value for potting. The pots should be glazed pots, purple sand pots or plastic pots, and small plants should not be planted in large pots; Cover the drainage hole at the bottom of the pot and cover with a small amount of coarse sand, then fill 1/3 of the substrate in the container, put the seedlings in the middle of the container, add a solid substrate, and the substrate is 1.0cm away from the container mouth. The proportion of colonizing soil is 1:1, and the water is poured thoroughly after being placed in the pot; it is placed in a plastic greenhouse, and the temperature in the shed is controlled at about 20°C; Potted plant management: In line with the principle of "never dry or water, water thoroughly", the pot soil should not be too wet or waterlogged; during the growth period of new shoots, fertilize in time, and use 0.3% potassium dihydrogen phosphate to topdress the roots Prune some branches that affect the ornamental effect; the pest control method adopts 8% abamectin EC 4000-6000 times or 5% flubenzuron EC 1500-2000 times, and sprays once every 10-15 days at the initial stage of insect pests. Spray 2 to 3 times. 2. The cultivation method of a kind of dwarf type potted Japanese osmanthus according to claim 1, characterized in that: the slotting bed is selected in leeward, sunny, flat land, thick plow layer, acidic or slightly acidic yellow soil that is beneficial to drainage; When preparing the slotting bed, spread rice husk ash on the bed surface to make a slotting bed with a width of 120 cm and a height of 20 cm. A drainage ditch with a width of 30 cm and a depth of 20 cm is set between the two beds. Ring-shaped drainage ditch, disinfect the cutting bed before cutting, spray with 600 times liquid of 70% thiophanate-methyl wettable powder or 500 times liquid of 50% carbendazim wettable powder, and seal the sterilized cutting bed with plastic film for 4 days Uncover and use. 3. The cultivation method of a kind of dwarf type potted Japanese osmanthus according to claim 1, characterized in that: before the cuttings, a 2.5m high shade shed is built around the bed, and 70%-80% of the shade is laid on the roof and around it Black nylon mesh for blackout. 4. The cultivation method of a kind of dwarf type potted Japanese osmanthus according to claim 1 is characterized in that: before cutting, the cutting bed will be poured with foot water, and the middle part of the cuttings will be pinched with the index finger and thumb, and the cuttings will be inserted into the soil for 3 -4cm, press the soil around the cuttings tightly, the cutting density should not overlap between the leaves, and the distance between plants and rows is 5×10cm. If there are some tender branches, you can use bamboo sticks to punch holes before cutting. After a small piece, it should be watered and moisturized. After the whole seedbed is cut, it should be watered thoroughly. Spray once with 70% thiophanate-methyl wettable powder to prevent diseases and insects. After cutting, use bamboo strips 70cm away from the cutting bed. Build an arch frame, cover it with a 0.02mm thick plastic film, and use moist soil to compact and seal the film around it. 5. the cultivation method of a kind of dwarf type potted Japanese osmanthus according to claim 1 is characterized in that: the length of the cuttings is controlled at 8-10cm, the lower leaves are removed, and the upper 2 leaves are kept, and the upper notch is cut flat , 5mm-7mm away from the buds, cut obliquely at the lower notch, 5mm away from the buds, align the lower ends of the cuttings of Rixianggui cuttings, dip them in 500mg/L-800mg/L α-naphthaleneacetic acid for 3-5s or rooting powder 100mg /L Soak for 1.5h, the base is immersed in 3-4cm. 6. A kind of cultivation method of dwarf type potted Japanese osmanthus according to claim 1, characterized in that: after the cutting is completed, carry out post-planting management: water thoroughly after cutting, cover the surroundings of the plastic film, and do not cut it within one month. Watering, the relative humidity in the film is kept at about 90%, the temperature is controlled at 18-28°C, and the film is removed after the callus is formed; after inserting, spray 2000 times of carbendazim solution once every 7 days; After rooting, spray 0.3% potassium dihydrogen phosphate plus 0.1% urea every 10 days after the water on the leaf surface dries up, or special liquid fertilizer for seedlings; winter management: when the minimum outdoor temperature is ≤ 5°C, the seedbed is covered with a secondary film. 7. The cultivation method of a kind of dwarf type potted Japanese osmanthus according to claim 1, is characterized in that: when step (2) seedlings are transplanted, water will be poured thoroughly before digging, and when the soil is moist and not bonded, carry out Raise the seedlings, remove the lower side branches and long roots of the seedlings before planting, straighten the seedlings when planting, bury the soil to the root neck, lift the seedlings lightly by hand to stretch the roots, and then compact them. In the process of raising seedlings, keep more roots and less damage to roots. Plant the seedlings as soon as possible after taking them, and pay attention to moisturizing to prevent the seedlings from dehydration. 8. The cultivation method of a kind of dwarf type potted Japanese sweet osmanthus according to claim 1, is characterized in that: when carrying out the seedling transplantation of step (2), in last year's autumn and winter season, the nursery field will be completely reclaimed once, Dig the holes according to the specifications of 1m×1.5m row spacing between plants and 0.5m×0.5m×0.5m planting hole. After 2 years, when they grow thicker and taller, every other plant can be removed, and the row spacing between plants will become 2m× 1.5m, apply 2-3kg of decomposed farmyard manure to each hole, and 10g of phosphate fertilizer as base fertilizer. Mix the topsoil and farmyard manure well before applying. The fertilizer is easily absorbed by the seedlings after fermentation in autumn and winter.