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The healing time is different depending on the grafting season, and the grafting healing is faster in spring and summer, because the plants are in the active growth period at this time. Autumn is slower, and in winter, it is estimated that only a small number of them will survive.
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(1) Maintain the excellent traits of the varieties and directly sow the fruit trees that grow from seeds, which are used for gardening, planting and fruiting, and are often easy to lose the excellent traits of the original varieties. This is because fruit trees have the genetic characteristics of both parents after cross-pollination and fruiting, and the offspring traits are separated, and the performance is different, and the consistency of the original mother plant variety is lost. The scion of grafted seedlings is mostly collected from the mother plant with mature and stable traits, and its genetic traits have been stabilized, so there will be no mutation after grafting, and the excellent traits of the mother plant can be maintained.
Therefore, most fruit trees, such as apples, pears, peaches, plums, citrus, etc., are generally propagated by grafting. (2) Early fruiting and early yieldingFruiting trees propagated by seeds flowered and fruited late, while grafting propagated could produce early flowering and fruiting. This is due to the fact that the scion used in grafting is generally required to be collected from large trees that have been fruitful, and they have entered the flowering and fruiting stage, and the grafted plants can quickly bloom and bear fruit as long as the tree grows to a certain size and has a certain nutritional base.
The seedlings of the same fruit tree generally take 7 8 or even 10 years after sowing to bear fruit, while the grafted seedlings generally only need 2 to 3 years to bear fruit. The early fruiting trait of dwarf anvil fruit trees was more obvious. (3) Most of the rootstocks used for grafting fruit trees to enhance stress resistance are wild and semi-wild species, which have strong adaptability to adverse environments, and can significantly enhance the stress resistance of fruit trees when used as rootstocks.
For example, in production, the mountain stator or begonia is commonly used as rootstock to graft apples, autumn pears or pears are used as rootstocks to graft pears, sour oranges are used as rootstocks to graft citrus, and Huaili or mountain lypin are used as rootstocks to graft lychees, all of which have improved the ability of these fruit trees to be drought tolerance, salt and alkali tolerance, barren resistance, cold resistance, disease resistance and other aspects to varying degrees. (4) Accelerate the breeding of excellent varieties of fruit trees sowing and reproduction is easy to change traits, cuttings are not easy to take root, and the use of grafting technology can accelerate reproduction, such as the propagation of apple dwarf anvil: graft the dwarf anvil to the begonia or apple tree, and then use the greenhouse to propagate, 4000 5000 seedlings can be propagated in a year.
5) Grafting the dwarf fruit tree on the dwarf rootstock can make the tree dwarf, which is not only easy to manage, but also can have early fruit, high quality, stable yield and high yield, and is suitable for dense planting and cultivation.
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Most of the fruit tree seedlings are propagated by grafting. So, what exactly is the role of fruit tree grafting? Why not straight.
What about sowing and propagating seeds from the seeds of the production variety? There are several reasons for this: 1. The "characteristics" of the variety can be maintained through graftingMany fruit trees such as apples and pears are cross-pollinated plants, and the seeds produced contain the genetic characteristics of both parents.
For example, if the seeds of the marshal variety are sown, the fruit of the tree will no longer be "marshal", but will show other traits. Even seeds taken from the fruit of the same tree will produce a variety of offspring after planting. Therefore, only by using the grafting method can the original variety be maintained.
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Grafting of fruit trees has the following benefits:
1. The propagation speed is fast (a bud can propagate a fruit tree seedling), and if it is grafted in spring, it can be nursed in autumn;
2. Grafting will not change the genetic characteristics of the scion, and the genetic characteristics of the scion can be kept unchanged, so that the genetic traits of the same batch of fruit tree seedlings can be consistent, and the quality traits of the fruits produced can be consistent;
3. Compared with the seedlings, the fruit trees propagated by grafting have passed the childhood stage because the mother tree of the collected scion has passed the childhood, and the fruit begins to bear fruit relatively early (most fruit tree grafted seedlings begin to bear fruit in the third year after planting, and a small number of tree species can bear fruit in the second year after planting);
4. If the measures are taken properly, multiple varieties can be grafted on a tree, and when it grows up, it can produce fruits of various colors, and even different kinds of fruits (for example, on the peach tree, you can graft the scion of multiple tree species such as apricot trees, plums, apricot plums, honey fruits, almonds, etc.), and cultivate colorful fruit trees.
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It can maintain the excellent characteristics of the original variety. Seedlings are formed quickly and bloom early. The grafted seedlings rely on the root system of the rootstock to obtain sufficient nutrients and water, and the growth is vigorous and the flowering is early.
It is suitable for some cuttings, strips are not easy to survive the precious flowers, such as the survival rate of plum with cuttings and strip propagation is not high, but the use of dogtooth plum or plum seedlings as rootstocks, early spring with cutting method for grafting, the survival rate is higher. Because grafting often uses wild plants as rootstocks, it can improve the ability of flowers and trees to resist cold, drought, diseases and pests. It can improve the ornamental value of flowers.
For example, on flowers and trees such as Yueji, rhododendron, peony, etc., branches and buds of different varieties and colors are grafted on a rootstock to produce colorful flowers.
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As long as the temperature and humidity are suitable, grafting can be carried out all year round. However, the survival rate is higher at the optimal time of grafting.
The appropriate period of grafting varies depending on the grafting method. Taking grafting as an example, it is generally advisable to carry out 2 to 3 weeks before budding in spring, that is, from late February to mid to late March. Because during this time, the cambium layer of the rootstock has begun to move, which can provide the water and nutrients needed by the scion to promote the formation of healing tissue.
During this time, the buds of the scion have just sprouted, so it is easy to survive after grafting. At this time, the grafting method is mostly cut or split. Autumn is the best time for bud grafting, which is generally carried out around the beginning of autumn.
This period is the period when the shoots are fully developed and the sap flow is vigorous, and the bark of most flowering rootstocks is easy to peel off, so the survival rate is high. However, grafting in autumn should not be too late, otherwise due to the gradual decrease in temperature, not only the rootstock cortex and xylem are not easy to peel off, but also easy to suffer from frost damage, and the survival rate is not high.
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Five measures to improve the survival rate of fruit tree grafting.
1. Choose rootstocks and scion with strong affinity.
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The best marriage for fruit trees.
Pick-up time should be.
From April to July.
Servings or so. That time.
The moisture is high and it is easy to survive.
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1. Barbecue.
Some foods (e.g. sweet potato, golden mushroom, etc.) must be wrapped in aluminum foil to avoid burning. Wrap it in aluminum foil to roast seafood, golden mushroom dishes, etc., to preserve the umami.
The role of tin foil when used for barbecue:
The first is to prevent food from sticking to the baking sheet.
The second is to prevent the food from sticking to dirty things.
The third is to facilitate the brushing of baking sheets.
Fourth, some food has seasonings when baking, and the fillings are wrapped in tin foil for fear of falling apart.
The fifth is to prevent water loss and keep it fresh.
2. Electric hair. Some hairstylists wrap their hair in aluminum foil to heat the hair and have a better heat transfer effect. Improper use of aluminum foil can lead to burns, poor hair quality and other problems.
3. Oil absorption. Crumple the aluminum foil into a ball and open it to absorb the oil from the soup. The principle is that in the process of crumpling the aluminum foil, the surface tension of the aluminum foil will be amplified.
Tin foil ** is very cheap, specific** according to the variety, a store has one**. Ordinary aluminum foil and aluminum foil paper trays can be purchased in supermarkets, department stores and home aluminum foil can be purchased in hardware stores and industrial materials companies.
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Hello, tin foil is a film-like metallic paper like silver, mostly silvery-white, actually aluminum foil, which is a kind of thin sheet with a thickness of less than processed by an aluminum foil rolling mill.
It is mainly used in the kitchen to cook, hold food, or make some materials that can be easily cleaned. Thousands of tons of aluminum foil are used around the world to protect and package food, cosmetics, and chemicals. Most aluminum foil is shiny on one side and matte on the other.
Aluminum foil for food can be used to wrap food on both sides, and it is usually recommended to wrap it on a shiny surface to enhance heat conduction.
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What kind of paper is used for anti-infrared scanning.
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1. Grafting in a timely manner.
Generally, in spring, summer and autumn for low-level grafting and replanting, spring before the branches germinate, summer and autumn to the branches after the old maturity, the selected scion branches should be fully aged and lignified. Since the age of the replanted tree and the anvil pile are relatively large, the diameter of the scion should be between centimeters and 1 centimeter, otherwise it will affect survival.
Second, the grafting method.
First, the anvil pile will be sawed off at 20 cm to 30 cm from the ground, and the anvil pile head will be flattened with a sharp grafting knife, and the 3 cm long interface will be cut from top to bottom on the cutting plane, deep into the xylem, depending on the size of the anvil pile to determine the number of connected tree heads, and the anvil pile with a diameter of 3 cm to 5 cm must be grafted with 3 branches, and attention should be paid to the uniform distribution. The scion used is 5 cm long, the bud eyes are retained more than 5, the lower part of the scion is cut obliquely from 1 cm to the back, and then the epidermis is cut off at the opposite back centimeter, and the xylem can be deep, and then the scion is inserted into the anvil and aligned with the cambium layer on one side. After cuttings, fix the scion, spray a new high-fat film to prevent and control the invasion of germs, and wrap the grafted agricultural film strip with a width of 4 cm in the right hand from bottom to top, wrap the anvil pile head, and then wrap the scion.
3. Post-grafting management.
After grafting, spray the agent and add 800 times the new high-lipid film to prevent insects and ants from biting through the agricultural film, and pour 10 kg to 15 kg of farmer's manure water on each anvil pile tree tray, and then combine loosening soil weeding once every 15 days, and at the same time use the new high-lipid film 800 times to improve the utilization rate of the active ingredients of the agent. About 10 days after grafting, a large number of "wild buds" will be extracted at the base of the anvil pile, which should be erased in time. At the budding stage and leaf development stage of scion, spray 2 to 3 times with insecticide, acaricide and disease prevention drugs.
When the tips of each batch are 10 cm to 15 cm long, they should be topped to promote more branches after aging.
What does a grafted fruit tree look like?
No, if there are signs of dehydration in the scion, soak in water for 10-20 minutes.