CN113383655A - Method for overcoming walnut high-junction decline and death - Google Patents
Method for overcoming walnut high-junction decline and death Download PDFInfo
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- CN113383655A CN113383655A CN202110841662.1A CN202110841662A CN113383655A CN 113383655 A CN113383655 A CN 113383655A CN 202110841662 A CN202110841662 A CN 202110841662A CN 113383655 A CN113383655 A CN 113383655A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G2/00—Vegetative propagation
- A01G2/30—Grafting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
Abstract
The invention is suitable for the technical field of walnut cultivation, provides a method for overcoming walnut high grafting recession and death, adopts a set of specific systematic method for improving walnut high grafting survival rate, and greatly shortens seedling period from grafting, bud grafting to management after grafting, and is systematic arrangement and innovation for walnut high grafting and excellent changing. The method is characterized in that the method is a key link for covering the west trunk by using waste chemical fiber fabrics or paperboards in the management process after grafting, the survival rate of high grafting of the walnut is improved and the vigor and the robustness of the tree are restored mainly by preventing the trunk from being burnt by sunlight, the survival rate of high grafting of the walnut and the early vigor of good-variety walnut are improved, the survival rate after grafting is more than 80%, and the yield is high and the tree vigor is robust.
Description
Technical Field
The invention belongs to the technical field of walnut cultivation, and particularly relates to a method for overcoming high-joint decline and death of walnuts.
Background
Walnut is a plant of juglans of juglandaceae, and is one of four dry fruits in the world. The kernel is nutritious and has high edible and medicinal value. The selection of the walnut scions is to use a good variety as a scion mother tree to establish a scion garden. The pure variety can be ensured by cutting the scions from the scion cutting garden. The scion mother tree should grow strongly without diseases and insect pests. The scions are about 1 meter long, 1-1.5 cm thick annual branches are required to be developed fully, the medulla is small, and 3-5 buds are reserved at the base.
At present, walnut grafting is mainly divided into scion grafting and bud grafting, but due to the influence of factors such as grafting period selection, grafting technology, stock quality, improper management after grafting and the like, the survival rate of walnut grafting is low; on the other hand, part of growers have low management level, extensive cultivation management and thin scientific and technical knowledge, so that the good varieties of the planted walnuts are not popularized in place, and seedlings are not good and uniform, thereby directly influencing the economic benefit of the growers.
Disclosure of Invention
The invention provides a method for overcoming high-connection decline and death of walnuts, and aims to solve the technical problems.
The invention is realized in such a way that a method for overcoming walnut high-connection decline and death comprises the following steps:
the method comprises the following steps: selecting the stock and the scion,
selecting a seedling walnut tree which is robust in growth and development and has good conditions in the field or an old inferior tree which has poor fruiting state and needs to be rejuvenated as a stock;
selecting strong growing branches or annual branches with plump buds and no diseases and insect pests, collecting, and storing at low temperature, wherein the branches can be buried by wet sand;
step two: the grafting adopts a method of inserting skin and tongue,
step S1: sawing off an upper branch section at a straight part of a trunk or a main branch of the stock, wherein the section is required to be smooth, and cutting off a rough old epidermis to expose a phloem;
step S2: selecting scions, cutting into branch sections with 2-3 bud mouths, and beveling into horse ear shapes;
step S3: inserting the scion xylem between the xylem and phloem of the rootstock;
step S4: immediately binding up the cut of the fruit tree with special adhesive tape or a jute bag, a plastic rope and the like, and firmly sticking or binding the scions;
step three: bud grafting, checking the survival condition of the branch grafting, performing square bud grafting on the tree body which does not survive,
step A: selecting full buds at the middle lower part of the scion, and taking a rectangular bud sheet as the scion;
and B: opening a mouth equivalent to the scion bud on a new branch in the current year;
and C: immediately putting the taken grafting buds into the opening, sticking, compacting and binding, and completely wrapping the bud sheets and the petioles tightly;
step four: after the grafting, the management is carried out,
after walnut grafting, timely protecting the west side of the trunk, covering the west side of the trunk by using waste chemical fiber fabrics or paperboards, simultaneously strengthening the protection of the grafted part, and using a healing agent or auxin is beneficial to improving the survival rate of the grafted walnut and reducing disease spots and death rate by more than 80%.
Preferably, in the second step, from 10 late autumn to 11 early autumn, and from 3 early spring to 4 early spring.
Preferably, in the third step, the temperature can be within 5-7 months, and the optimal time period is that the temperature is stabilized at 25-30 ℃.
Preferably, in the third step, step a: the method for taking the rectangular bud grafting sprout slice comprises the steps of cutting off the leaf stalk by 0.5 cm left by a knife, transversely cutting the upper part and the lower part of the bud by a knife at a position of 1 cm, vertically cutting the leaf stalk by a knife at a position of 0.5 cm on both sides of the bud, intersecting with a transverse cutting knife opening, pressing the leaf stalk by a thumb and a forefinger to transversely peel off, taking the next rectangular bud slice, and paying attention to a growing point on the rectangular bud slice, namely a small piece of bud meat tissue (growing point) at a concave position below the bud base on the inner surface of the bud slice.
Preferably, in step B of the third step, the method for opening the new branch comprises: selecting a smooth surface position on a new branch of the current year, grafting the new branch at a distance of more than 10cm from the base of the stock, completely removing lower leaves, leaving 2 compound leaves on the upper part, and opening a mouth equivalent to the scion bud.
Preferably, in the third step, survival condition is checked 7-10 days after grafting.
Preferably, the branch in the second step is bound with the support so as to prevent the young shoots from being broken by wind after growing out; in the third step, attention is paid to timely loose binding and release of the plastic strips, so that the obstruction of water and nutrient supply is reduced.
Preferably, in the second step, the scion for grafting is generally sealed by wax, so that the water loss can be prevented, and the grafting survival rate can be improved.
Compared with the prior art, the invention has the beneficial effects that: the method for overcoming walnut top grafting decline and death adopts a specific systematic method for improving walnut top grafting survival rate, and management is performed from grafting, bud grafting to grafting, so that the seedling period is greatly shortened, and the method is systematic arrangement and innovation for walnut top grafting change.
The method is characterized in that the method is a key link for covering the west trunk by using waste chemical fiber fabrics or paperboards in the management process after grafting, the survival rate of high grafting of the walnut is improved and the vigor and the robustness of the tree are restored mainly by preventing the trunk from being burnt by sunlight, the survival rate of high grafting of the walnut and the early vigor of good-variety walnut are improved, the survival rate after grafting is more than 80%, and the yield is high and the tree vigor is robust.
Drawings
FIG. 1 is a schematic flow chart of the operation of the present invention;
FIG. 2 is a schematic view of walnut bark grafting;
in fig. 2:
1. cutting the scions; 2. removing old skin of the stock; 3. inserting the scion; 4. inserting the scion in a side view; 5. binding;
FIG. 3 is a schematic diagram of walnut block budding;
in fig. 3:
1. scion and bud slice stripping; 2. opening the rootstock; 3. embedding and sticking bud slices; 4. the binding is tight.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a technical solution: a method for overcoming walnut high-connection decline and death comprises the following steps:
(1) preparing scions, selecting excellent varieties as scion stock trees, establishing a scion cutting garden, and cutting the scions from the scion cutting garden to ensure that the varieties are pure and healthy, and the scion stock trees grow robustly and do not have diseases and insect pests. According to the requirement, the mother tree in the cutting orchard can be used for cutting the scion for 3 times in one year. The scion for grafting is collected before germination in spring, and 3-5 buds of annual branches can be cut short to promote new branches. After scions are cut, the cut openings are timely painted with paint, the stock plants are protected, and the trees are prevented from being weakened due to excessive bleeding. And harvesting for the second time at the bottom of 5 months and in the middle of 6 months, wherein the ear harvesting amount is 60 percent of the new tip of the current year, and the rest branches are harvested when being grafted in the spring of the second year. And harvesting the young sprout in the late 7 th month for the third time, and harvesting the young sprout after the second time of harvest. The scion cutting garden needs to strengthen fertilizer and water management, promote the growth and the filling of branches and improve the quality of scions.
For the scion: selecting annual branches with the length of about 1 meter and the thickness of 1-1.5 cm, requiring full development, small medulla, leaving 3-5 buds at the base part for shearing, then grading according to the thickness and the length, binding 50 branches in one bundle, hanging variety labels, registering and making book, placing the harvested ears in a cellar in winter, burying the harvested ears with wet sand, and grafting as soon as the harvested ears are harvested in spring.
(2) The scions are treated, and the scions for grafting are generally sealed by wax, so that the water loss can be prevented, and the grafting survival rate can be improved. If the scions need to be transported, the scions can be transported in early spring or late autumn, the temperature is low, the scions cannot be frozen, and the scions need to be kept wet during transportation. The scions can be buried in wet sand in a cellar during storage, and the effect is good. The layering process takes care that each scion is in contact with wet sand, so the stored scion bundles cannot be too large.
The wax sealing method comprises placing commercially available paraffin (with good effect by adding small amount of beeswax) into container (aluminum pot or iron pot), heating with fire to dissolve the paraffin, inserting a thermometer into the liquid wax, and controlling the temperature of the liquid wax to 120-140 deg.C. After the wax liquid is melted, the scion is put into the wax liquid to be quickly dipped, and the redundant wax liquid is thrown off, so that the surface of the whole scion is coated with a layer of thin, uniform and transparent wax film. A small amount of scions can be dipped one by using clips or chopsticks, a large amount of scions can be used by a strainer, 10-20 scions can be processed at one time by using the strainer, and the temperature of wax cannot be reduced too much.
The specific operation method comprises the following steps: placing 10-20 scions in the strainer, quickly submerging the scions in the wax liquid, instantly taking out the strainer, lifting to enable part of the wax liquid to fall back into the pot, and throwing the scions on the ground paved with the plastic cloth with slight force to enable the scions to scatter around without piling up on one place, so that heat dissipation is facilitated, and the scions cannot be bonded together. Note that the temperature of the wax must not be too high or too low. The scion is easy to be killed by scalding due to overhigh temperature, and the container can be removed from a heat source to be cooled. When the temperature is too low, the wax layer on the scion is too thick, and the scion is easy to crack and fall off, and needs to be heated again. The temperature can be conveniently controlled by heating with an induction cooker. A small amount of water can be added into the container, the container is indirectly heated by the water, and the temperature of the wax liquid is controlled within the range of 90-100 ℃, so that the scion can be protected from being scalded, but the wax sealing effect is not as good as that of direct heating by fire due to low temperature. The scions sealed by the wax are not required to be piled together, and the scions are required to be dispersed to promote the heat to be rapidly dissipated so as to protect the scions from being scalded. The grafting is not carried out immediately after wax sealing, and the scion can be wrapped by wet cloth and put into a refrigerator or buried in cellar wet soil for temporary storage.
And 3-5 days before grafting, taking out the scion stored in winter, and cutting the scion into branch sections which are 15-20 cm long, 3-4 full buds and 1-2 cm away from the first bud.
The first bud is preferred, and the quality of the first bud is of particular concern because the first bud will grow the best shoots.
(3) The grafting is mainly grafting by inserting a bark into a tongue, and referring to fig. 2, after the rootstock is sawn off, a smooth part is selected to cut off an old bark from bottom to top, the length is 5-7 cm, the width is 1-1.5 cm, and the bark layer is exposed.
The scion is cut into 6-8 cm single-cut surfaces in a horse ear shape, and the cortex behind the cut surfaces is pinched off by hands to separate the cut surfaces from the xylem.
Inserting the xylem of the scion bevel between the xylem and the cortex of the stock where the epidermis is cut off, covering the bevel of the stock with the cortex pinched open by the scion, and finally tightly binding with plastic cloth.
In this case, since the scion is difficult to be pinched without peeling, the scion to be inserted into the skin is subjected to a pregermination treatment in advance to peel the scion from the skin.
(4) Preparation and treatment of budding scions. Referring to FIG. 3, the growing branches of the current year, which are already lignified, are selected from the bottom of 5 months to the middle of 6 months, and the buds are full and have high maturity, which is adopted at any time.
The leaves are removed immediately after the scions are cut off, leaf stalks about 2 cm are left, the leaves cannot be too short, otherwise the wound is too large, meanwhile, one leaf is cut off, a pile of leaves is not cut off, the cut scions are bundled (20 or 30 strips in each bundle), the scions are wrapped by wet cloth, the variety is marked, and grafting is carried out as soon as possible.
Wherein, the scions are preferably picked and used at the same time locally, so that long-distance transportation is avoided. When in transportation, the wood chips are wrapped by plastic films, and the wet wood chips are placed in the plastic films, which cannot be sealed and need to be properly ventilated. The short-term storage can be suspended in a water well 10cm away from the water surface, or in a cold storage, and the temperature is kept above 0 ℃ without freezing. The survival rate of grafting is reduced along with the prolonging of the storage time of the scion of bud grafting, and the storage period is generally not more than 5 days. When grafting in the field, the scions are wrapped by wet cloth and placed in a cool place to avoid sunshine. The scions of the bud grafting are also required to be sealed by grafting wax after collection so as to reduce the loss of moisture. The product can be used without wax sealing, and is wrapped with wet cloth.
The specific method of bud grafting comprises the following steps: cutting off the leaf stalk by a knife about 0.5 cm, transversely cutting the upper and lower parts of the bud by a knife 1 cm, vertically cutting the leaf stalk by a knife 0.5 cm on both sides of the bud, intersecting with the transverse cutting knife, pressing the leaf stalk by a thumb and a forefinger, transversely peeling, taking a rectangular bud slice, and paying attention to a growth point on the rectangular bud slice, namely a small piece of bud meat tissue (growth point) at the concave position of the inner bud base of the bud slice.
And transversely cutting a smooth part of the sprout strip 20 cm from the base part transversely, transversely cutting a knife on the knife edge, wherein the distance between the two knives is equal to the length of the bud, and vertically cutting a knife which is communicated with the upper transverse knife opening and the lower transverse knife opening.
And (3) opening a door by picking the cortex, putting the scion bud, abutting one side of the scion bud against a vertical knife edge, tearing off the bark picked up by the stock according to the transverse width of the scion bud, and paying attention to that the removed bark is slightly wider than a scion bud sheet by 1-2 mm so that the scion bud is tightly combined with a cambium.
And cutting the thick mulching film into plastic strips with the width of 3 cm for binding, and paying attention to tightly wrap the sections of the petioles to expose bud points.
And finally, 1-2 compound leaves are left on the stock top above the connector by using pruning shears, so that the vegetative growth of the stock is controlled, and the survival of the grafted bud is facilitated.
Wherein, the square bud grafting is preferably carried out from the bottom of 5 months to the middle of 6 months, and the bud grafting can germinate into strong strips in the current year. Grafting is carried out in 7-8 months, but after grafting, the grafted buds sprout late or do not sprout (stuffy buds) in the current year, and the stocks are cut and sprout into strips in the second year, so that the method is mainly used for the supplementary grafting of the stocks which do not survive in 5-6 months.
(5) And selecting the rootstock strips, wherein the joints of the big trees which do not survive after high grafting can sprout 3-5 young shoots (rootstock strips) with different lengths, and the method is the same as the method for high-position grafting. The branch grafting is bound with the supporting column so as to prevent the young shoots from being blown and broken by wind after growing out, and the bud grafting is required to pay attention to timely loose binding and release plastic strips so as to reduce the obstruction of water and nutrient supply.
(6) And (5) managing after grafting. The west trunk is covered by waste chemical fiber fabric or paper board, the protection of the grafting part is strengthened, and a healing agent or auxin is used.
Example 1:
a method for overcoming walnut high junction decline and death is provided. The method comprises the following specific steps:
(1) and (3) preparing the graft scions. Selecting annual branches with the length of about 1 meter and the thickness of 1-1.5 cm, requiring full development, small medulla, leaving 3-5 buds at the base part for shearing, then grading according to the thickness and the length, binding 50 branches in one bundle, hanging variety labels, registering and making book, placing the harvested ears in a cellar in winter, burying the harvested ears with wet sand, and grafting as soon as the harvested ears are harvested in spring.
(2) And (5) scion treatment. The scions for grafting are wax-sealed. And 3-5 days before grafting, taking out the scion stored in winter, and cutting the scion into branch sections which are 15-20 cm long, 3-4 full buds and 1-2 cm away from the first bud.
(3) And (5) grafting. After the rootstock is sawed off, a smooth part is selected, an old bark is cut from bottom to top, the length of the old bark is 5-7 cm, the width of the old bark is 1-1.5 cm, and the cortex is exposed. The scion is cut into 6-8 cm single-cut surfaces to form a horse ear shape, a cortex behind the cut surfaces is pinched off by hands to be separated from a xylem, the xylem of the scion cut surfaces is inserted between the xylem and the cortex of the stock where the epidermis is cut off, the cortex pinched off by the scion covers the cut surfaces of the stock, and finally the scion is tightly bound by plastic cloth.
(4) And (5) bud grafting. And checking the survival rate, and carrying out bud grafting on the part which does not survive. And (4) selecting lignified current-year-growing branches from the bottom of 5 months to the middle of 6 months, wherein the buds have high maturity and are full. It is used at any time. The leaves are removed immediately after the scions are cut off, leaf stalks about 2 cm are left and cannot be too short, and one leaf is cut off. The scions are preferably picked and picked at the same time locally, avoiding long distance transportation. During transportation, the wood chips are wrapped by plastic films, and the wet wood chips are placed in the plastic films, cannot be sealed and need to be properly ventilated. The short-term storage can be suspended in a water well 10cm away from the water surface, or in a cold storage, and the temperature is kept above 0 ℃ without freezing. The survival rate of grafting is reduced along with the prolonging of the storage time of the scion of bud grafting, and the storage period is generally not more than 5 days. When grafting in the field, the scions are wrapped by wet cloth and placed in a cool place to avoid sunshine. The scions of the bud grafting are also required to be sealed by grafting wax after collection so as to reduce the loss of moisture. The product can be used without wax sealing, and is wrapped with wet cloth.
The specific method of bud grafting comprises the following steps: cutting off the leaf stalk by a knife about 0.5 cm, transversely cutting the upper and lower parts of the bud by a knife 1 cm, vertically cutting the leaf stalk by a knife 0.5 cm on both sides of the bud, intersecting with the transverse cutting knife, pressing the leaf stalk by a thumb and a forefinger, transversely peeling, taking a rectangular bud slice, and paying attention to a small piece of bud meat tissue at a concave position below the inner bud base of the bud slice, which is a growing point on the rectangular bud slice. A smooth part of the rootstock, which is about 20 cm from the ground, is transversely cut, a cut is transversely cut on the cut, the distance between the two cuts is equal to the length of the scion bud, a cut is vertically cut, the two cuts are communicated with an upper transverse cut and a lower transverse cut, a door is opened on the cortex, the scion bud is placed in, one side of the scion bud is close to the vertical cut, the bark picked up by the rootstock is torn according to the transverse width of the scion bud, and the removed bark is slightly wider than a scion bud slice by 1-2 mm so that the scion bud is tightly combined with the cambium. And cutting the thick mulching film into plastic strips with the width of 3 cm for binding, and paying attention to tightly wrap the sections of the petioles to expose bud points. And finally, 1-2 pieces of compound leaves are left on the anvil tips above the connector by using pruning shears. The square bud grafting is preferably carried out from the bottom of 5 months to the middle of 6 months, and the grafted buds can germinate into seedlings in the same year. Grafting is carried out in 7-8 months, but the grafted bud does not germinate in the current year (stuffy bud), and the stock is cut and germinates into seedlings in the second year, so that the method is mainly used for the replanting of stock seedlings which do not survive in 5-6 months.
(5) And (5) managing after grafting. The west trunk is covered by waste chemical fiber fabric or paper board, the protection of the grafting part is strengthened, and a healing agent or auxin is used.
The invention provides a specific systematic method for improving the survival rate of walnut top grafting, which is used for management from grafting and bud grafting to grafting, greatly shortens the seedling period and is systematic arrangement and innovation for walnut top grafting and excellent change.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A method for overcoming walnut high-connection decline and death is characterized in that: the method comprises the following steps:
the method comprises the following steps: selecting the stock and the scion,
selecting a seedling walnut tree which is robust in growth and development and has good conditions in the field or an old inferior tree which has poor fruiting state and needs to be rejuvenated as a stock;
selecting strong growing branches or annual branches with plump buds and no diseases and insect pests, collecting, and storing at low temperature, wherein the branches can be buried by wet sand;
step two: the grafting adopts a method of inserting skin and tongue,
step S1: sawing off an upper branch section at a straight part of a trunk or a main branch of the stock, wherein the section is required to be smooth, and cutting off a rough old epidermis to expose a phloem;
step S2: selecting scions, cutting into branch sections with 2-3 bud mouths, and beveling into horse ear shapes;
step S3: inserting the scion xylem between the xylem and phloem of the rootstock;
step S4: immediately binding up the cut of the fruit tree with special adhesive tape or a jute bag, a plastic rope and the like, and firmly sticking or binding the scions;
step three: bud grafting, checking the survival condition of the branch grafting, performing square bud grafting on the tree body which does not survive,
step A: selecting full buds at the middle lower part of the scion, and taking a rectangular bud sheet as the scion;
and B: opening a mouth equivalent to the scion bud on a new branch in the current year;
and C: immediately putting the taken grafting buds into the opening, sticking, compacting and binding, and completely wrapping the bud sheets and the petioles tightly;
step four: after the grafting, the management is carried out,
after walnut grafting, timely protecting the west side of the trunk, covering the west side of the trunk by using waste chemical fiber fabrics or paperboards, simultaneously strengthening the protection of the grafted part, and using a healing agent or auxin is beneficial to improving the survival rate of the grafted walnut and reducing disease spots and death rate by more than 80%.
2. The method for overcoming walnut high-connection decline and death according to claim 1, wherein: in the second step, from 10 late autumn to 11 early spring, from 3 early spring to 4 early spring.
3. The method for overcoming walnut high-connection decline and death according to claim 1, wherein: in the third step, the temperature can be within 5-7 months, and the optimal time period is that the temperature is stabilized at 25-30 ℃.
4. The method for overcoming walnut high-connection decline and death according to claim 1, wherein: step A in the step three: the method for taking the rectangular bud grafting sprout slice comprises the steps of cutting off the leaf stalk by 0.5 cm left by a knife, transversely cutting the upper part and the lower part of the bud by a knife at a position of 1 cm, vertically cutting the leaf stalk by a knife at a position of 0.5 cm on both sides of the bud, intersecting with a transverse cutting knife opening, pressing the leaf stalk by a thumb and a forefinger to transversely peel off, taking the next rectangular bud slice, and paying attention to a growing point on the rectangular bud slice, namely a small piece of bud meat tissue (growing point) at a concave position below the bud base on the inner surface of the bud slice.
5. The method for overcoming walnut high-connection decline and death according to claim 1, wherein: step B in the third step, a method for opening the new branch comprises the following steps: selecting a smooth surface position on a new branch of the current year, grafting the new branch at a distance of more than 10cm from the base of the stock, completely removing lower leaves, leaving 2 compound leaves on the upper part, and opening a mouth equivalent to the scion bud.
6. The method for overcoming walnut high-connection decline and death according to claim 1, wherein: and in the third step, the survival condition is checked 7-10 days after grafting.
7. The method for overcoming walnut high-connection decline and death according to claim 1, wherein: in the second step, the branch is bound with the support so as to prevent the young shoots from being blown and folded by wind after growing out; in the third step, attention is paid to timely loose binding and release of the plastic strips, so that the obstruction of water and nutrient supply is reduced.
8. The method for overcoming walnut high-connection decline and death according to claim 1, wherein: in the second step, the scions for grafting are generally sealed by wax, so that the water loss can be prevented, and the grafting survival rate is improved.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT202100023810A1 (en) * | 2021-09-15 | 2023-03-15 | Sichuan Acad Of Forestry | METHOD FOR SPLIT GRAFTING AND BINDING OF SINGLE SPRING WALNUT BUDS |
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