CN108293456A - A kind of big fruit fibert tiltedly plants layering seedling growth method - Google Patents

Abstract

The invention discloses a method for raising seedlings of hazelnut with oblique planting and layering. The mother tree of hazelnut with large fruit is planted obliquely by using a concave border; the base of the sprouting tiller is covered with dry sawdust, and the seedlings are pressed with the technique of covering the sawdust with soil; special overflow tools and The C-shaped iron ring overflows the base of the seedlings; lays a hose pipe between the rows of hazel trees, and leaves a water spray hole on the hose to ensure that the sawdust at the root is moistened by spraying water, and the integrated irrigation and fertilization of water and fertilizer is carried out through the pipe; topping and pruning are adopted The method of combining the tops controls the growth of the upper part and promotes rooting; adopts the spring seedling method to reduce the damage to the seedlings caused by improper false planting in autumn; different colors of plastic binding ropes are used to indicate different varieties. It can effectively save land, improve the number of seedlings and root quality, effectively save labor, improve efficiency, and improve the uniformity and standardization of seedlings.

Description

A method for growing seedlings of hazelnut with oblique planting and layering

technical field

The invention relates to a method for raising seedlings of hazelnuts with large fruits, in particular to a method for raising seedlings of hazelnuts with oblique planting and layering.

Background technique

Hazel is a plant of the genus Corylus in the family Corylaceae. Hazel is an important economic and ecological tree species. It is also known as the "four major nuts" in the world together with walnuts, almonds, and cashews. The large-fruited hazelnut, scientific name Pingou hybrid hazel (C.heterophylla Fisch.×C.avellana L.), is a new variety bred by interspecific cross-breeding with Pingzhen as the female parent and the imported European hazel as the male parent. The excellent genetic traits of the two are concentrated, which not only has the characteristics of strong cold resistance, strong adaptability, and resistance to barrenness, but also has the characteristics of European hazelnuts with large nuts, high kernel yield, and excellent flavor. The emergence of large-fruited hazelnuts ended the history of my country's hazelnuts without cultivated species, and enabled my country's hazelnut industry to realize the transformation from wild resource utilization to artificial horticultural cultivation, and realized the transformation from traditional "snacks" to modern industries. The emergence of large hazelnuts has led to the development of an industry. China's hazelnut industry has entered a stage of rapid development, and the cultivated area has increased rapidly. According to incomplete statistics, by the end of the spring tree planting in 2017, the national Pingou hybrid hazel cultivated area Reached 750,000 mu.

With the continuous expansion of the planting area of hazelnuts all over the country, especially in the north, there is a strong demand for hazelnut seedlings. The seedling raising methods of hazelnut mainly include layering, cutting and tissue culture propagation. These methods have their own characteristics. Because cutting seedlings need to build ear gardens, greenhouses, humidification and cooling equipment, and skilled workers and management personnel, the investment cost is high, the management risk is high, and it cannot be successful in the past. seedlings, and therefore have not been adopted on a large scale. Tissue culture expansion requires the establishment of a tissue culture room, and at the same time requires specialized technical personnel to operate and a sterile environment. The conditions are relatively high. There are only a few laboratory seedlings, and there is no large-scale promotion. The layering seedling raising technology is to use the characteristics of the strong germination ability of the root tiller of the large fruit hazelnut, and treat the base of the semi-lignified root seedling of the year with a rooting agent, and at the same time create moisture and heat preservation conditions to promote its rooting technology. Layering seedling raising technology has the characteristics of simple and direct operation, and can grow seedlings in the same year. It is the most widely used seedling raising method for large-fruited hazelnuts. However, many of the current large-fruit hazelnut nurseries focus on both fruiting and seedling cultivation. Due to the large distance between the mother trees and the gradual opening of the mother trees, the growth of the root seedlings in the lower part is covered. The quantity is not good.

Prior art one:

Upright layering is a common method for raising seedlings of hazelnuts at present, which is a method of asexual reproduction using root tillers of hazelnuts. After the big-fruited hazelnut is planted, from the second year, root tillers will start to sprout under the tree. When the sprouted branches grow to 60cm, the leaves of the lower 20cm will be removed. Bind the iron wires, brush the rooting agent on the upper part of the iron wires, and then use wooden boards, thick plastic or linoleum paper to form a cylinder with a height of about 30cm, and pour wet sawdust into the enclosed space. After the sprouts take root in autumn, the sprouts are separated from the mother tree to obtain root tiller seedlings.

The shortcoming of prior art one:

Existing vertical layering seedling raising methods, many are carried out in the existing big-fruit hazelnut orchard, often result and carry out simultaneously with seedling raising, not special seedling raising nursery. This type of nursery garden is planted according to the standard of building an orchard when planting the mother tree, and the distance between the plants and the rows is often very large. And because of the needs of the results, enough fruiting branches should be left, and often pruned into an open tree shape, which also causes a covering effect on the seedlings at the base of the tree. The light is not sufficient, resulting in a small number of seedlings per unit area and weak growth. In addition, the method of filling sawdust in this enclosing hole requires a lot of labor due to complicated operation. In order to grow more seedlings, it is often necessary to remove a large number of branches of the mother tree. If the amount of branches left by the mother plant is too small, a large number of mother plants will die after a few years. will drop.

Prior art two:

Cutting is also a common method for raising seedlings of large-fruited hazelnuts. Cutting seedlings first need to establish a cutting shed. The cutting shed is generally built with a steel frame structure, with an arched top, about 14 meters long and 2.5 meters wide. It is covered with PVC film and a sunshade net is built on the shed. The bottom of the matrix is paved with pebbles, and the upper layer is evenly covered with a layer of fine river sand about 10 cm thick to form a slotting bed. In the middle of the slotting bed, pave an aisle with a width of about 40 cm with bricks to prepare for personnel operation and the laying of water spray pipes and spray equipment. Generally, in June-July, the twigs of the upper part of the developed branches are taken for cuttings, and the twigs are cut into cuttings of about 15cm. Generally, two leaves are left, and half of the leaves are cut. Cuttings were carried out after dipping the base 5cm of the cuttings in the hormone.

The shortcoming of prior art two:

To grow seedlings by cuttings, it is first necessary to establish cutting sheds that meet the requirements, laying beds, and humidification and cooling equipment, which requires a large cost. At the same time, to raise seedlings by cuttings, it is necessary to establish a special ear garden for making cuttings. Cutting seedlings are often carried out in summer, and the temperature is often very high. At this time, it is necessary to cool down, and at the same time, there must be a certain humidity in the cutting shed. These need to be precisely controlled, and continuous care and management are required. In addition, the high temperature and high humidity environment can easily cause bacteria to grow in the cutting bed, resulting in rotten ears and roots of cuttings. Since the cuttings need to take root after cutting, the upper part often grows slowly. After the leaves fall in autumn, they can only grow to a height of about 30-40cm, which is less than the standard for going out of the nursery. This requires removing the cutting shed in autumn for seedling hardening, then burying the seedlings for overwintering, replanting them in spring, and leaving the nursery after one year of growth. Cuttings are labor-intensive and time-consuming.

Contents of the invention

The object of the present invention is to provide a method for cultivating seedlings of hazelnut with oblique planting and layering.

The purpose of the present invention is achieved through the following technical solutions:

The oblique planting layering seedling raising method of hazelnut with large fruit of the present invention mainly comprises the following steps:

A. Choose land with flat terrain, fertile soil and high organic matter content;

B. Whole furrow, the middle of the furrow is low and the sides are high, forming a concave furrow;

C. Adopt the method of oblique planting in the same direction to plant the female parent tree, select seedlings with full buds and no damage, and plant them obliquely in the center of the concave furrow. In the middle and early July, the trunk will be completely placed, and the trunk will be buried shallowly to prevent sunburn;

D. From late July to early August, topdress the roots once and irrigate them;

E, the 2nd year spring before germination, the 1-year-old shoots that grow on the main trunk of the buried soil parallel to the ground are cut short;

F. After thawing, apply quick-acting fertilizers to the roots and irrigate them;

G. From late May to early June, when the growth height of sprouted tillers reaches 60cm and is not fully lignified, layering is carried out to remove the leaves within 20cm from the base of green branches, and within 2cm above the base of sprouts, use special overflow Use tools and C-shaped iron rings to overflow, spray 1‰ of indole butyric acid within 20cm above the overflow, spray it around the shoots, then cultivate 25-30cm thick dry sawdust at the base of green branches, and then cover with soil 5cm;

H. In the middle and early June, after layering, lay hose pipes between the rows of hazel trees. Spray holes are left on the hoses to ensure that the sawdust at the roots is moist by spraying water. The integrated irrigation and fertilization of water and fertilizer is carried out through the pipes, and the compound liquid is soluble in drip irrigation. Fat;

1, when the pruning branch grows to 120cm, adopt the method that topping and pruning top combine, seedling height is controlled at 120cm-150cm, to promote the growth of bottom root;

J. In the area south of the Yellow River in Shandong, the soil can be cultivated at the base of the seedlings in autumn to survive the winter, and the seedlings can start to rise after the soil thaws in spring.

As can be seen from the above-mentioned technical solutions provided by the present invention, the oblique planting and layering seedling raising method of hazelnuts provided by the embodiments of the present invention can effectively save land, improve the number of seedlings and root quality, effectively save labor, improve efficiency, and improve Uniformity and standardization of seedlings.

Description of drawings

Fig. 1 is a structural schematic diagram of a green branch base overflow tool and a C-shaped ring in an embodiment of the present invention.

In the figure: 1, the overflowing tool at the base of the green branch, 2, the C-shaped ring.

Detailed ways

The embodiments of the present invention will be further described in detail below. The content not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.

The method for cultivating seedlings of hazelnut with oblique planting and layering of the present invention, its preferred specific implementation mode is:

It mainly includes the following steps:

A. Choose land with flat terrain, fertile soil and high organic matter content;

B. Whole furrow, the middle of the furrow is low and the sides are high, forming a concave shape;

C. Adopt the method of oblique planting in the same direction to plant the female parent tree, select seedlings with full buds and no damage, and plant them obliquely in the center of the concave furrow. In the middle and early July, the trunk will be completely placed, and the trunk will be buried shallowly to prevent sunburn;

D. From late July to early August, topdress the roots once and irrigate them;

E, in the spring of the 2nd year, before germination, the 1-year-old shoots grown on the main trunk of the buried soil parallel to the ground are shortened;

F. After thawing, apply quick-acting fertilizers to the roots and irrigate them;

G. From late May to early June, when the growth height of sprouted tillers reaches 60cm and is not fully lignified, layering is carried out to remove the leaves within 20cm from the base of green branches, and within 2cm above the base of sprouts, use special overflow Use tools and C-shaped iron rings to overflow, spray 1‰ of indole butyric acid within 20cm above the overflow, spray it around the shoots, then cultivate 25-30cm thick dry sawdust at the base of green branches, and then cover with soil 5cm;

H. In the middle and early June, after layering, lay hose pipes between the rows of hazel trees. Spray holes are left on the hoses to ensure that the sawdust at the roots is moist by spraying water. The integrated irrigation and fertilization of water and fertilizer is carried out through the pipes, and the compound liquid is soluble in drip irrigation. Fat;

1, when the pruning branch grows to 120cm, adopt the method that topping and pruning top combine, seedling height is controlled at 120cm-150cm, to promote the growth of bottom root;

J. In the area south of the Yellow River in Shandong, the soil can be cultivated at the base of the seedlings in autumn to survive the winter, and the seedlings can start to rise after the soil thaws in spring.

In the step A, the pH of the land is between 6.5-8.0, the annual average temperature is 10-15°C, the frost-free period is more than 150 days, the precipitation is more than 700mm, and the sunshine hours are more than 2100 hours.

In the step B, the width of the furrow is 50 cm, the middle is low and the sides are high, the slope is about 20°, forming a concave shape, the distance between the centers of the two furrows is 2 meters, and drainage ditches are dug around the nursery.

In the step C, select seedlings with full buds and no damage, and plant them obliquely in the center of the concave furrow with a plant spacing of 1m and a row spacing of 2m. Length 60cm.

In the described step D, apply compound fertilizer containing N, P, K at the root, 100g per plant, fertilization method: dig a shallow ditch about 5cm deep in the tree both sides apart from the tree 20-30cm, evenly spread the compound fertilizer, Cover the soil and water it along the way.

In the step E, the pile height is 1cm after the short cut.

In the step F, apply compound fertilizer containing N, P and K at the root, 150-200g per plant, fertilization method: dig a shallow ditch about 5cm deep on both sides of the tree at a distance of 30-50cm from the tree, and spread the compound fertilizer evenly Enter, cover with soil, and carry out irrigation along the way.

In the step G, the special overflow tool is in the shape of pliers, and the C-shaped iron ring is clamped at the front opening of the special overflow tool.

In the step H, the dosage of drip irrigation compound liquid water-soluble fertilizer is 10 L/mu, fertilization is performed once every 15 days, and fertilization is performed 2-3 times.

In said step J, when cultivating soil for overwintering at the seedling base in autumn, the height of cultivating soil is 10 cm, and antifreeze water is poured; when the seedlings start to rise after the soil is thawed in spring, the cultivated hazelnut seedlings are first-class seedlings, and the seedling height is 120 cm-150 cm. There are more than 15 lignified lateral roots with a length of 30 cm, and 50 seedlings are bundled into a bundle with plastic ropes, and the colors of the plastic ropes represent different varieties.

The oblique planting and layering seedling raising method of large-fruit hazelnut of the present invention establishes a special large-fruit hazelnut nursery nursery to increase the number of seedlings per unit area; adopts integrated water and fertilizer sprinkler irrigation to improve the growth of the mother tree, promote rooting, and improve the quality of seedlings. There are about 15 lateral roots, and the length is up to 30cm; the method of combining topping and trimming the top is used to control the height of the seedlings at 120cm-150cm, and the base diameter is about 1.0cm; it is different from false planting in autumn, but in spring With the planting, it can prolong the growth period, ensure sufficient moisture in the roots, and have a high survival rate; use different color binding ropes to indicate different seedling species, which is conducive to the identification of seedling species, simple and direct; using a special overflow tool and C-shaped iron Ring; can effectively save labor, improve efficiency and production.

It mainly includes the following steps:

(1) Site selection

Choose land with flat terrain, fertile soil, high organic matter content, pH between 6.5-8.0, average annual temperature of 10-15°C, frost-free period of more than 150 days, precipitation of more than 700 mm, and sunshine hours of more than 2100 hours.

(2) Soil preparation

For the whole plot, the width of the plot is 50 cm, the middle is low and the sides are high, the slope is about 20°, forming a concave shape, the distance between the centers of the two plots is 2 meters, and drainage ditches are dug around the nursery.

(3) Colonization of female parent trees

Adopt the way of oblique planting in the forward direction to plant the female parent tree, select the seedlings with full buds and no damage, and plant them in the center of the concave furrow with a distance of 1m and a row spacing of 2m. 5-8cm, fixed dry length 60cm. In mid-to-early July, the main trunk should be fully placed, and the main trunk should be buried in shallow soil to prevent sunburn.

(4) topdressing

From late July to early August, topdress the roots once, and apply 100g of compound fertilizer (including N, P, K) per plant. Fertilization method: Dig a shallow ditch about 5cm deep on both sides of the tree 20-30cm away from the tree, spread the compound fertilizer evenly, cover the soil, and irrigate in the forward direction.

(5) Female tree pruning

In the spring of the second year, before germination, the 1-year-old shoots grown on the main trunk parallel to the ground are cut short, and the pile height is 1 cm after the short cut.

(6) Apply quick-acting fertilizer

After thawing, apply quick-acting fertilizer to the roots, and apply compound fertilizer (containing N, P, K) 150-200g per plant. Fertilization method: Dig a shallow ditch about 5cm deep on both sides of the tree 30-50cm away from the tree, spread the compound fertilizer evenly, cover the soil, and irrigate in the forward direction.

(7) layering seedling cultivation

From the end of May to the first ten days of June, when the growth height of the shoots reaches 60 cm and is not fully lignified, layering is carried out to remove the leaves within 20 cm from the base of the green branches. Use the special overflow tool and C-shaped iron ring shown in the figure to carry out overflow. Spray 1‰ of indole butyric acid within 20cm above the overflow site. Spray all around the shoots, and then cultivate 25-30cm thick dry sawdust at the base of the green branches. Then cover with soil 5cm.

(8) Apply water-soluble fertilizer

In mid-to-early June, after layering, lay hose pipes between the rows of hazel trees. Water spray holes are left on the hoses to ensure that the sawdust at the roots is moist by spraying water. Water and fertilizer integrated irrigation and fertilization are carried out through pipes, and compound liquid water-soluble fertilizers are drip-irrigated. The dosage is 10L/mu. According to the climate and soil moisture, generally fertilize once every 15 days, and generally fertilize 2-3 times.

(9) Management after layering treatment

When the layered branches grow to 120cm, use the method of topping and pruning the top to control the height of the seedlings at 120cm-150cm to promote the growth of the lower roots.

(10) Seedling raising and bundling

The method of the present invention carries out earth-building overwintering at seedling base in autumn, and the height of earth-building is 10cm, and pours antifreeze water. Seedlings begin to rise after the soil is thawed in spring. The hazelnut seedlings cultivated by the present invention are first-grade seedlings with a seedling height of 120cm-150cm, more than 15 lignified lateral roots, and a length of 30cm. The 50 seedlings were tied into a bundle with plastic ropes. The colors of the plastic ropes represented different varieties, and the types of varieties represented by the colors of the plastic ropes were shown in Table 1.

Table 1 The color of the binding rope of the seedling species

The present invention utilizes concave furrows to carry out oblique planting of large fruit hazel mother trees; uses dry sawdust to cover the base of sprouting tillers, and presses the seedlings by covering soil on the top of the sawdust; uses a special overflow tool and a C-shaped iron ring to overflow the base of seedlings; Hose pipes are laid between the rows of hazel trees, and water spray holes are left on the hoses to ensure that the sawdust at the roots is moist by spraying water, and the integrated irrigation and fertilization of water and fertilizer is carried out through the pipes; the method of combining topping and pruning the top is used to control the growth of the upper part and promote rooting ; Use spring seedlings to reduce damage to seedlings caused by improper false planting in autumn; use different colors of plastic binding ropes to indicate different varieties. It can effectively save land, improve the number of seedlings and root quality, effectively save labor, improve efficiency, and improve the uniformity and standardization of seedlings.

Specific examples:

In 2013, a 10-acre large-fruit hazelnut nursery was established in Dongjia Town, Jinan, Shandong Province. Seedlings with full buds and no damage were selected. The row spacing of planting plants was 1m×2m, and they were planted obliquely in the center of the concave furrow. The inclination angle is 45°, the root system is buried in the soil 5-8cm, the fixed length is 60cm, and a total of 3,000 mother trees are planted. Start to overwhelm the main trunk around July 10. When overwhelmed, shake it slightly, do not overwhelm it all at once, to prevent the main trunk from breaking. Parallel, then cover a small amount of soil on the main trunk. In the spring of 2014, before the buds germinate, prune the sprouting branches of the main trunk except the top shoots, and leave a pile of about 1cm. After pruning, basically each tree can germinate 10-15 branches. At the end of May and early June, wait for the seedlings to grow to more than 60cm At the same time, remove about 20cm of the basal leaves, use a special overflow tool and a C-shaped iron ring to overflow at a distance of 1cm from the ground, and spray 1‰ of indole butyric acid within 20cm above the overflow. After dissolving, mix with water. Then cultivate the sawdust to the base of the green branches to a thickness of 25-30cm, and then cover with soil 5cm. After the soil covering work is completed, drip irrigation should be carried out immediately to ensure the moistness of the roots. In the fall of that year, no seedlings were raised, and after the leaves fell in autumn, the base of the seedlings was covered with soil about 10 cm, and then watered with antifreeze water. The seedlings are raised after thawing in spring, and the seedlings raised can keep the root system moist and have a high survival rate. A bundle of 50 plants after emergence, with plastic ropes of different colors to represent different varieties, which can be temporarily planted. In 2014, 6,050 first-grade seedlings emerged, in 2015, 9,700 first-grade seedlings, in 2016, 32,800 first-grade seedlings, and in 2017, 50,580 first-grade seedlings.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technical field can easily conceive of changes or changes within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. a kind of big fruit fibert tiltedly plants layering seedling growth method, which is characterized in that mainly include the following steps that：

A, selection topography is flat, fertile soil, the high soil of the content of organic matter；

B, whole furrow, the low both sides in furrow centre are high, form spill；

C, it takes the mode that direct motion is tiltedly planted to be colonized stock tree, chooses the full harmless nursery stock of bud, tilt and transplant in recessed furrow center, It waits for early or mid July, trunk is thoroughly put into, and shallow embedding soil is carried out to trunk, prevent day from burning；

D, in early August late July-, root top dressing is primary, and pours water；

E, the 2nd year spring is short to being parallel to the raw branch progress in 1 gone out year grown on the trunk for burying soil on ground before rudiment It cuts；

F, after thawing, quick-acting fertilizer is applied in root, and pours water；

G, early June late May-carries out press strip when sprout tillers growing height reaches 60cm and not complete lignifying, will be green Blade removal within branch base portion 20cm, within the scope of the above 2cm of coppice shoot base portion, is carried out with special brimming tool and c-type iron hoop It overflows, the indolebutyric acid of spraying 1 ‰, coppice shoot surrounding to be sprayed onto within the above 20cm ranges in position that overflow, then toward green branch base Train the dry sawdust of 25-30cm thickness, subsequent earthing 5cm in portion；

H, early or mid June, after press strip, hoseline was in the ranks laid in hazel, there are hole for water spraying on hose, is passed through to spray water and is ensured Root sawdust moistening, water-fertilizer integral fertigation, trickle irrigation composite fluid Water soluble fertilizer are carried out by pipeline；

I, when marcotte grows to 120cm, the method being combined using pinching and trimming top is controlled height of seedling in 120cm- 150cm, to promote lower part root growth；

J, in seedling base portion earth up after fall foliage overwintering, and pour anti-freezing water, start lifting after soil thaws in spring.

2. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step A, soil PH is between 6.5-8.0, and average annual temperature is at 10-15 DEG C, 150 days frost-free periods or more, precipitation 700mm or more, sunshine time 2100 hours or more.

3. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step B, furrow are wide 50cm is spent, intermediate low both sides are high, 20 ° or so of the gradient, form spill, two 2 meters of furrow centre distances, garden ground surrounding drainage trenching canal.

4. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step C, choose The full harmless nursery stock of bud tilts plant in recessed furrow center, seedling stem is inclined with ground direct motion at 45 ° with spacing in the rows 1m, line-spacing 2m Oblique angle, root system bury native 5-8cm, surely dry length 60cm.

5. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step D, root Apply the composite fertilizer containing N, P, K, every plant of 100g, fertilizing method：The deep about 5cm of shallow ridges is dug away from tree 20-30cm direct motions in tree both sides, will be answered Hefei is uniformly sprinkled into, and blinding, direct motion is poured water.

6. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step E, cutting back Stubble height 1cm afterwards.

7. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step F, root Apply the composite fertilizer containing N, P, K, every plant of 150-200g, fertilizing method：The deep about 5cm of shallow ridges is dug away from tree 30-50cm direct motions in tree both sides, Composite fertilizer is uniformly sprinkled into, blinding, direct motion is poured water.

8. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that described in the step G Special brimming tool is pliers shape, and the c-type iron hoop is clamped in the front opening position of the special brimming tool.

9. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step H, trickle irrigation Composite fluid Water soluble fertilizer dosage is 10L/ mus, and every fertigation in 15 days is primary, is applied fertilizer 2-3 times.

10. big fruit fibert according to claim 1 tiltedly plants layering seedling growth method, which is characterized in that in the step J, in Autumn, earthed up height 10cm, and pours anti-freezing water when seedling base portion carries out earthing up overwintering；Start lifting after soil thaws in spring When, the fibert seedling of cultivation is that level-one seedling, height of seedling 120cm-150cm, lignifying lateral root 15 or more, and length reach 30cm, with modeling Material rope beats 50 seedlings to be tied for 1, and plastic ties color represents different kinds.