CN110326442B - Grafting method for improving walnut yield - Google Patents
Grafting method for improving walnut yield Download PDFInfo
- Publication number
- CN110326442B CN110326442B CN201910782382.0A CN201910782382A CN110326442B CN 110326442 B CN110326442 B CN 110326442B CN 201910782382 A CN201910782382 A CN 201910782382A CN 110326442 B CN110326442 B CN 110326442B
- Authority
- CN
- China
- Prior art keywords
- girdling
- walnut
- branches
- grafting
- months
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Abstract
The invention relates to a method for improving walnut yield, in particular to a method for selecting walnut trees with low yield and poor quality, wherein semi-girdling is carried out on main branches outside a trunk from late 3 months to late 4 months, the girdling width is 0.3-0.5 cm, the girdling circumference is 1/3-2/3 of the main branch circumference, a healing agent is smeared at the girdling opening after girdling, when 25-30 cm of lateral branches grow out at the girdling position, topping is carried out to enable the lateral branches to grow thick in the same year, and budding is carried out on the newly grown lateral branches within 6-7 months; and after the fruits above the girdling part are harvested, cutting off the semi-girdling part at the tail end of the main branch in the late 9 months, and reserving the lateral branches growing at the girdling part. The method does not affect the growth of the walnut in the current year of grafting, the fruit can be picked still, grafting is carried out on the side branch newly grown at the girdling part, fruiting branches are increased, the increment of the walnut is increased, the walnut tree above the grafting part is still subjected to photosynthesis and nutrient delivery by adopting a semi-girdling mode, and the grafted branches are germinated from the main branch, so that the growth of the branches is facilitated, and the branches are not easy to wind break and split.
Description
Technical Field
The invention belongs to the technical field of grafting cultivation, and particularly relates to a grafting method for improving walnut yield.
Background
Grafting is one of artificial propagation methods of plants, and is performed by utilizing the function of a plant having a wound healing function after being wounded. The walnut tree has relatively high tannin content, so that the walnut tree has low grafting survival rate. The high tannin content can cause the wound of the walnut tree to be oxidized and blackened rapidly in the grafting process, and the activity of the cells for obtaining the slices is reduced, so that the grafting survival rate is influenced.
The high-grafting and head-changing of walnut trees are to change the defects of late bearing, low yield, poor quality, no disease resistance and the like of the trees with good bearing and low yield by utilizing the characteristics of early bearing, high yield and high quality of good varieties. The traditional big tree height head switching method has two types: firstly, low-yield inferior branches are sawed from 3 late ten days to 4 early months of the year, and new buds are germinated to bud and graft in 6-7 months. One method is to use reserved hard branch scions to perform near-row grafting immediately after low-yield inferior branches are sawed from 3 late ten days to 4 early months. Both have the common defect that the walnut fruits cannot be harvested and sold after 9 months and middle ten days of maturity even if part of branches are sawn off. And moreover, the sawed branches have no leaves, so that photosynthesis is lost, the root system length of the tree body is influenced to a certain extent, the walnut tree cannot be subjected to photosynthesis to cause the phenomenon of death of the whole plant, and then the healing part of the grafting wound of the hardwood is easy to wind and break or split. For example, according to the method for changing the head of the walnut tree by high grafting provided by the chinese patent application CN106718529A, the high grafting head is caused by incompatibility or poor affinity between the rootstock used for grafting and the scion variety, or due to viruses, etc., which can cause high grafting diseases, the total growth amount is reduced by 25-50%, the yield is reduced by 20-60%, and the fruit quality is reduced. Secondly, in the prior art, after grafting, because the walnut tree stock has a large section, the simple adoption of a grafting belt has poor fixing effect, and the existing healing agent is easy to cause infection. In addition, most bearing branches of walnuts are concentrated at the tail ends of the branches, fruits hardly grow at the middle lower parts of the branches, and more branches grow in the crowns with larger empty spaces, which is also an important reason for low walnut yield. Therefore, a method capable of improving the walnut yield and increasing the survival rate after grafting is urgently needed to be developed.
Disclosure of Invention
Aiming at the problems of low walnut yield, low grafting survival rate and influence on the growth of the walnut in the current year in the prior art, the invention provides a grafting method for improving the walnut yield.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a grafting method for improving walnut yield comprises the following steps:
(1) in the late 3 th ten days to the early 4 th days, selecting main branches of walnut trees except trunks for semi-girdling, wherein the width of a girdling opening is 0.3-0.5 cm, the girdling circumference is 1/3-2/3 of the girdling position main branch circumference, and smearing a healing agent at the girdling opening after girdling;
(2) when 25-30 cm of lateral branches grow at the girdling position, topping to enable the lateral branches to be thick in the current year, and carrying out bud grafting on the new lateral branches within 6-7 months;
(3) and in the last ten days of 9 months, cutting off the semi-girdling part at the tail end of the main branch.
Preferably, the width of the girdling cut in the step (1) is 0.5cm, and the girdling perimeter is 1/3 of the perimeter of the main branch at the girdling position.
Preferably, the walnut tree is a walnut tree with low yield and poor quality.
Preferably, the girdling position in the step (1) is positioned on the upper main branch of the fruiting branch of the walnut.
Preferably, the distance between the two girdling positions on the main branch in the step (1) is 30-40 cm.
Preferably, the girdling is performed by adopting a girdling knife, and the girdling opening reaches the xylem deeply.
Preferably, the step (3) is carried out by harvesting the walnut fruits above the girdling section before the cutting.
In the invention, a semi-girdling mode is adopted, the walnut fruits on the bearing branches above the girdling part can still normally grow, the picking of the walnut grafted in the current year is not influenced, the economic benefit is enlarged, the girdling position is positioned on the overgrown main branch which does not bear fruits originally, and bearing branches are increased after the bud grafting, so that the increment and the yield increase of the walnut are facilitated.
Has the advantages that:
(1) the method for grafting the low-yield inferior walnut tree does not affect the growth of the walnut tree in the current year of grafting, the walnut fruits above the grafting part can be picked, the economic benefit of a grower in the current year of grafting is enlarged, and the bearing branches are added on the original non-bearing bare branches by carrying out bud grafting on the newly grown side branches at the girdling parts, so that the method is more beneficial to increment and yield increase of the walnut.
(2) The walnut tree body grafting above the grafting position can still carry out photosynthesis in the year by adopting a semi-girdling mode, the nutrient is conveyed to the upper part of the walnut tree body through the xylem by the walnut tree body, and the nutrient is conveyed to the root part of the walnut tree body through the photosynthesis by the walnut tree leaves, so that the walnut tree body is a circulation effect, and the grafted branches are emitted from the buds of the branches, so that the walnut tree is more favorable for the growth of the branches and is not easy to wind break and split.
Drawings
FIG. 1 is an overall schematic view of walnut grafting and girdling;
FIG. 2 is an enlarged, partially encircled view of A in FIG. 1;
FIG. 3 is an enlarged, partially cut-away view of B of FIG. 2;
fig. 4 is a schematic diagram of partial grafting of B in fig. 2.
The specific implementation mode is as follows:
the following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Embodiments of the present invention will be described with reference to the accompanying drawings 1 to 4,
example 1
(1) Selecting walnut trees with low yield and poor quality, selecting main branches except for trunks in the last 3 months, performing semi-girdling at the positions without bearing branches at the upper ends of bearing branches by using a girdling cutter, wherein the girdling cut reaches the xylem deeply, the width of the girdling cut is 0.5cm, the girdling circumference is 1/3 of the girdling part of the main branches at the girdling position, the distance between every two girdling positions is 30cm, and timely smearing a healing agent after girdling;
(2) when 25cm of lateral branches grow at the girdling position, topping to enable the lateral branches to be long and thick in the current year, and carrying out bud grafting on the newly grown lateral branches in 6 months;
(3) cutting off at the top girdling position and at the tail half girdling position of the main branch in the middle 9 th of the month after the walnut fruits above the girdling position are harvested, and reserving a new branch growing at the girdling position;
the statistical survival rate of the grafted walnut sprouting is 99.8%, and the walnut after the next year of sprouting can be fruited.
Example 2
(1) Selecting walnut trees with low yield and poor quality, selecting main branches except trunks in the last ten days of 4 months, performing semi-girdling at the positions without fruiting branches at the upper ends of fruiting branches by using a girdling cutter, wherein the girdling cut reaches the xylem deeply, the width of the girdling cut is 0.5cm, the girdling circumference is 1/3 of the girdling part of the main branches at the girdling position, the distance between every two girdling positions is 35 cm, and coating a healing agent at the girdling cut in time after girdling;
(2) when 28cm of lateral branches grow at the girdling position, topping to enable the lateral branches to be long and thick in the current year, and carrying out bud grafting on the newly grown lateral branches in 7 months;
(3) after the walnut fruits above the girdling part are harvested, cutting off the girdling part at the top end of the main branch in the last 9 th month, and reserving a new branch growing at the girdling part;
the statistical survival rate of the grafted walnut germination is 100%, and the walnut after the next year of bud grafting can bear fruit.
Example 3
(1) Selecting walnut trees with low yield and poor quality, selecting main branches except for trunks in the last 3 months, performing semi-girdling at the positions without bearing branches at the upper ends of bearing branches by using a girdling cutter, wherein the girdling cut reaches the xylem deeply, the width of the girdling cut is 0.5cm, the girdling circumference is 1/3 of the girdling part of the main branches at the girdling position, the distance between every two girdling positions is 40 cm, and coating a healing agent at the girdling cut in time after girdling;
(2) when 30cm of lateral branches grow at the girdling position, topping to enable the lateral branches to be long and thick in the current year, and carrying out bud grafting on the newly grown lateral branches in 6 months;
(3) cutting off at the top girdling position and at the tail half girdling position of the main branch in the middle 9 th of the month after the walnut fruits above the girdling position are harvested, and reserving a new branch growing at the girdling position;
the statistical survival rate of the grafted walnut sprouting is 99.5%, and the walnut after the next year of sprouting can be fruited.
Claims (6)
1. The grafting method for improving the walnut yield is characterized by comprising the following steps:
(1) in the late 3 th ten days to the early 4 th days, selecting main branches of walnut trees except trunks for semi-girdling, wherein the width of a girdling opening is 0.3-0.5 cm, the girdling circumference is 1/3-2/3 of the girdling position main branch circumference, and smearing a healing agent at the girdling opening after girdling;
(2) when 25-30 cm of lateral branches grow at the girdling position, topping to enable the lateral branches to be thick in the current year, and carrying out bud grafting on the new lateral branches within 6-7 months;
(3) cutting off the semi-girdling part at the tail end of the main branch in the last ten days of 9 months;
and (3) collecting the walnut fruits above the girdling part before cutting.
2. The grafting method according to claim 1, wherein the width of the girdling cut in the step (1) is 0.5cm, and the girdling perimeter is 1/3 times the perimeter of the main branch at the girdling position.
3. The grafting method according to claim 1, wherein the walnut tree is a walnut tree with low yield and poor quality.
4. The grafting method according to claim 1, wherein the ring-cutting position in step (1) is located on the upper main branch of the fruiting branch of the walnut.
5. The grafting method according to claim 4, wherein the distance between the two ring-cutting positions on the main branch in step (1) is 30-40 cm.
6. The grafting method according to claim 1, wherein the girdling is performed by girdling with a girdling knife, the girdling cut reaching as deep as the xylem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782382.0A CN110326442B (en) | 2019-08-23 | 2019-08-23 | Grafting method for improving walnut yield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782382.0A CN110326442B (en) | 2019-08-23 | 2019-08-23 | Grafting method for improving walnut yield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110326442A CN110326442A (en) | 2019-10-15 |
| CN110326442B true CN110326442B (en) | 2021-06-01 |
Family
ID=68150214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910782382.0A Active CN110326442B (en) | 2019-08-23 | 2019-08-23 | Grafting method for improving walnut yield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110326442B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111418427A (en) * | 2020-04-21 | 2020-07-17 | 张晓霞 | Method for dynamically balancing yin and yang waning and growing of fruit trees and high-joint head replacement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101849492A (en) * | 2010-06-07 | 2010-10-06 | 云南省农业科学院热区生态农业研究所 | Method for retaining trunk and molding green date tree |
| CN102197774A (en) * | 2010-03-23 | 2011-09-28 | 郑怡 | Novel method for changing varieties of fruit-trees (economic forest) |
| CN102422781A (en) * | 2011-09-15 | 2012-04-25 | 卢家旺 | Grafting method for thin-bark walnut tree |
| CN106718529A (en) * | 2016-11-29 | 2017-05-31 | 河南科技大学 | A kind of best fruiting period walnut grafting high and changing head method |
| CN110050626A (en) * | 2019-04-30 | 2019-07-26 | 攀枝花市农林科学研究院 | A kind of mango tree crown update cultural method |
-
2019
- 2019-08-23 CN CN201910782382.0A patent/CN110326442B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102197774A (en) * | 2010-03-23 | 2011-09-28 | 郑怡 | Novel method for changing varieties of fruit-trees (economic forest) |
| CN101849492A (en) * | 2010-06-07 | 2010-10-06 | 云南省农业科学院热区生态农业研究所 | Method for retaining trunk and molding green date tree |
| CN102422781A (en) * | 2011-09-15 | 2012-04-25 | 卢家旺 | Grafting method for thin-bark walnut tree |
| CN106718529A (en) * | 2016-11-29 | 2017-05-31 | 河南科技大学 | A kind of best fruiting period walnut grafting high and changing head method |
| CN110050626A (en) * | 2019-04-30 | 2019-07-26 | 攀枝花市农林科学研究院 | A kind of mango tree crown update cultural method |
Non-Patent Citations (2)
| Title |
|---|
| 核桃高接换优技术总结;高智辉等;《西北园艺(果树)》;20100610(第03期);第27-29页 * |
| 荫蔽柑桔园的更新改造技术;杨小平;《柑桔和亚热带果树信息》;20030530;第19卷(第5期);第26-27页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110326442A (en) | 2019-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105027995B (en) | The method planted is changed in a kind of advanced age pear tree improvement | |
| CN111837791B (en) | Method for quickly establishing clonal seed orchard of castanopsis hystrix and application thereof | |
| Howard | Propagation techniques | |
| Ozkan et al. | Early performance of cv. Jonagold apple on M. 9 in five tree training systems. | |
| CN110326442B (en) | Grafting method for improving walnut yield | |
| CN111386879B (en) | In-tree culture method of dragon fruit fattening stock | |
| CN111406525B (en) | Method for accelerating blooming and fruiting of high-grafting citrus varieties by adopting interstock combination | |
| CN107969238A (en) | The breeding method of color silk flosssilk wadding wood | |
| CN114711040B (en) | Chinese chestnut underground grafting method for promoting branching and improving yield | |
| CN114747382B (en) | Pruning and management method beneficial to yield increase of peppers | |
| CN106888816B (en) | High-yield and high-quality blueberry grafting method | |
| Hrotkó | Developments in high density cherry production in Hungary | |
| CN108450168B (en) | High-latitude kiwi fruit secondary grafting method | |
| CN113317100A (en) | Cherry round-table type close planting cultivation technology | |
| CN111802151A (en) | Method for top grafting crown replacement of American hickory large tree by adopting square bud grafting | |
| Usenik et al. | Effects of summer pruning on vegetative growth, fruit quality and carbohydrates of'Regina'and'Kordia'sweet cherry trees on'Gisela 5' | |
| CN113141998A (en) | Sweet potato germplasm resource preservation method | |
| CN111713284A (en) | Method for pre-maturing Korean pine | |
| Fumuro | Comparison of growth, yield, and fruit quality of pot-planted mango cv. Aikou using own-rooted trees propagated by air layering and grafted trees propagated by conventional methods | |
| CN109644711A (en) | A kind of peach stump is short to connect new varieties swap method | |
| CN115088542B (en) | Stock capable of improving nitrogen absorption and utilization efficiency of peach tree, and cultivation method and application thereof | |
| CN113854031B (en) | Cultivation method of simplified main trunk tree form of blueberry | |
| CN102415280A (en) | Grafting method for increasing leaf area through plant approach grafting | |
| CN114158412B (en) | Method for seamlessly updating grape variety by trunk high-position grafting | |
| CN102007851A (en) | Rejuvenizing method for grafted rootstock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |