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Some of the walnut trees have silver buds at the base of the branches, and some have them in the middle and bottom of the branches, so for the parts that are already barefoot, they can only be sawn on the silver teeth in the bare-legged position, and deep into the xylem to force new branches. The amount of forced new shoot growth depends on the thickness of the base branch and the depth of the sawn timber, with a length of more than 1 2 m (this method can be used for bald areas), and the shallow sawn timber can only grow shoots of less than 30 cm. With this method, fruiting branches can be achieved or new stems can be cultivated in the bare leg position.
If the new shoots of the early chamber walnut grow well, it will bloom the next year, and some of the early chamber trees will bloom in the same year, and if they germinate, they will bloom in the same year, and the sprouts of the full chamber tree will take three years to bloom.
In the case of large non-backbone branches, the effect of circular sawing from the hidden buds to the xylem weakens the growth tendency of such branches, and the growth of young shoots in the lower part fills the space of the bare parts, the effect is similar to that of forcing the branches with a saw, but the effect is more intense. Spiral Daegu chainsaws are safer. Walnut trees, unlike other fruit trees, are prone to injuries from scissors when pruning, so strong trees become weaker and weak trees are cut down and die.
Most fruit trees usually undergo winter pruning during the winter dormant period, why don't walnut trees advocate winter pruning?
When a walnut tree is pruned during the dormant period after losing its leaves, the sap (i.e., the nutrients of the tree) may run down the wound or even run out, and the tree can easily die the next spring. So far, no effective way to prevent the flow of injuries has been found. Therefore, it is best to try to avoid pruning the dormant period of the fruit trees of the walnut tree.
When is the right time to prune a walnut tree? Thinning and alleviation: When the branches of fruit trees are too dense, they should be thinned.
Improve the well-ventilated light transmission conditions and promote flower bud differentiation. Moderation is also a technique of trimming. That is, without cutting, the buds on the eggplant sprout freely.
Relief not only eases the growth momentum but also contributes to the results of the armpits. After the branches are slowly loosened with flower buds, they can be re-shrunk and are often used for pruning young and king trees.
The topping is the shallow growth point at the top of the new shoot, and the end is the tip of the long tip. Its effect can inhibit the growth of branch tips, save the nutrients needed for flowering and fruiting, avoid unnecessary waste, improve fruit setting rate, and promote the formation of flower buds and flowering and fruiting in other fruit branches. Topping can promote root growth, lateral bud germination, and promote the growth of secondary branches.
Rubbing with your hands or cutting a bud with scissors is called a bud. Budding is when the new shoots start to grow rapidly, ignoring the new shoots that are too dense. Smearing buds and buds conserves nutrients, promotes the growth of remaining buds, and enriches their growth.
Sideways, removing side branches can improve light, help with branch enrichment, eye differentiation and improve fruit quality. Removing unhelpful buds and buds as soon as possible can later reduce the large wounds caused by large branches and the huge waste of nutrients.
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In this way, the tree receives plenty of sunlight, and at the same time, it can also increase the yield of the walnut tree, and it will also give a more aesthetically pleasing appearance.
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Walnut trees are best pruned before flowering after budding in the spring. The advantage is that it is conducive to ventilation, temperature and humidity regulation, etc. In addition, proper pruning is also very helpful in adjusting the balance of the tree. If there are too many male flowers during the pruning process, you can choose a better than inferior operation to ensure good growth.
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It is best to prune walnut trees after fruit harvest and before leaf drop, or after walnut trees have budded in spring and before male flowers have fallen. The advantage of pruning is to improve the utilization rate of light energy, and at the same time it is conducive to ventilation, temperature and humidity adjustment and other convenient operation. In addition, proper pruning is also very helpful to adjust the balance of the tree, if the number of male flowers is too large during the pruning process, you can choose to remove the superior and inferior operations to ensure good growth.
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One of the reasons for the formation of too many male flowers in walnut trees is the variety relationship, for example, the density of male and female flowers of early-fruiting varieties is significantly greater than that of late-fruiting varieties of walnut;
Another main reason is that the lack of water and fertilizer and the amount of fruit are too large, resulting in the weakening of walnut trees, which will cause the reduction of female flowers, the production of a large number of male flowers, and even the appearance of only male flowers, no female flowers "male flower branches".
If there are too many male flowers and too many male flower branches, the following points should be noted:
1. Increase water and fertilizer, enhance tree potential, and promote tree balance;
2. Moderate thinning of flowers and fruits, especially the removal of male flower branches;
3. Moderate pruning and retraction to enhance the tree's potential.
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Summary. Dear, yes, walnut trees are grafted in spring, and the time is generally selected around early April to early May, when the main grafting is the main one. If you want to do budding, it is recommended to postpone the time and choose it around mid-May to late June.
Dear, yes, walnut trees are grafted in spring, and the time is generally selected around early April to early May, when the main grafting is the main one. If the bud grafting is carried out, the time and auspiciousness should be postponed, and it is recommended to choose the banquet from mid-May to about the end of June Hongzhou.
Hello dear! Not only is grafting very important for walnut trees, but walnut tree pruning is also very important. Trim.
Walnut trees are usually pruned in the fall. Pruning in other seasons can easily lead to bleeding and loss of large amounts of nutrients and water, weakening the trees and dying branches, which can affect yields in severe cases. Trim so that it remains single-headed, and there can be no more than one split sock.
Its main purpose is to nurture the skeleton of the tree, lay a good foundation, and rapidly expand the canopy to promote early fruiting and early yield. Kai sedan chair.
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No, there are some and there are not.
Walnut tree, also known as walnut tree, belongs to the Juglans family, and the varieties are divided into wild pecans and artificially grafted improved varieties of walnut. Native to Central Asia, it is cultivated all over China, and it is generally chosen to plant artificially improved varieties, because the improved varieties have higher yields than wild varieties and have thin shells, commonly known as pickled walnuts. The wild shell is thick, large, oily and other characteristics, and it tastes more fragrant, commonly known as iron walnut.
Walnut trees can be used as shelterbelts for road greening; Due to its toughness and elasticity, wood is also a superior material used in industry; Walnut shells can be processed into works of art. Walnuts are called together with almonds, cashews, and hazelnuts in the international market"Four big nuts"。Walnut trees are adapted to the ecological environment of deep, loose, fertile, moist and warm climate.
Cultivation management. Planting time in March before and after the germination of walnut in October, planting 1 2-year-old seedlings with high survival rate, after planting should be watered thoroughly, and strengthen water and fertilizer management, often loosen the soil and weed, pay attention to drainage in the rainy season, and pay attention to the prevention and control of pests and diseases in June and July. Pruning should be carried out during the growth period, and the stem height should be kept above 3m. Do not prune after falling leaves, otherwise it is easy to cause damage and affect the growth of the tree.
Planting time deciduous fruit trees are generally suitable in winter, evergreen fruit trees are suitable in spring, and they should be standardized when planting to achieve horizontal and vertical rows. When planting, the grafting interface should be exposed to the ground, the root system should be extended, and then the soil should be cultivated, steadfast, irrigated, and then sealed after water infiltration, so as to facilitate water retention.
Tall walnut trees have a long lifespan, and the hundred-year-old trees can still maintain high yields. The tree is tall, thick and leafy, and the crown diameter of a large walnut tree can reach more than 10 meters, covering an area of 100 200 square meters.
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The budding period of Xiangling walnut is late March, and the leaf development period is early to mid-April, when the leaf curtain is basically formed, and new branches are extracted at the same time as germinating and spreading leaves, and the growth period of new shoots is from early April to late July. The pollination period of male flowers is mid to late April, and the flowering period of females is in late April. The fruit development period is from early May to late August, and the ripening period is mid to late August.
The defoliation period is from late October to early November. The growth period of new shoots of Xiangling walnut tree is from early April to late July, the spring and autumn shoots are not obvious, the stop period is short, there are two or three branches, and there are two growth peaks throughout the year, which are early May and late June, respectively. There was a secondary growth phenomenon, and the average growth of new shoots was 42 1 cm.
Fruit growth and development law Xiangling walnut fruit began to develop from early May to late August. From the beginning of May to the beginning of June, the fruit growth was the fastest, the volume growth accounted for more than 90 of the total growth of the year, the weight accounted for about 70, and the average daily growth was more than 1 mm. From the beginning of June to the beginning of July, the second growth peak of the volume, during which from June 20, the husk began to harden, and the fruit size was basically finalized by July 10, and the second peak of weight increase from early July to late August, the oil content increased rapidly, and the weight was also finalized. Ripens in late August.
Xiangling walnut is a male first variety, and female first varieties should be configured as pollinator trees when planting. Xiangling walnut fruit has one peak development from early May to early June and from early July to late August, during which it is extremely important to strengthen fertilizer and water management to increase yield and improve quality. The fruit ripening period is in late August, and early harvesting should be avoided in order to improve the yield and quality of walnut nuts.
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Summary. Okay, no problem The growth process of a walnut tree can be divided into four stages: germination, growth, maturity, and dormancy.
In the autumn of harvest, the walnut trees go into a dormant period. At this time, the temperature becomes colder and the daylight hours become shorter, causing the hormones and nutrients in the tree's body to be transferred to the roots in order to maintain adequate nutrients during the winter**. At the same time, due to the low temperature, the metabolic rate of the tree also decreases, causing the growth of new shoots to stop.
During the dormant period, walnut trees do not absorb water and nutrients from the soil, but rely on the energy stored in the trunk and roots to sustain life activities. At this time, for the management of walnut trees, the main thing is to carry out winter protection and maintenance work. For example, a protective layer can be added around the trunk to protect it from freezing and spring pests and diseases.
When spring comes, the temperature rises and the sunshine hours are extended, and the walnut trees enter the growing season. At this point, the growth of the shoots also starts again, and the trees absorb nutrients and water from the soil to support the growth of the shoots. At this stage, for the management of walnut trees, timely pruning and fertilization are required to ensure the healthy growth of the trees.
Hi there, glad to answer Yes, the stop of walnut shoots usually occurs after harvest. After harvesting, the walnut trees enter a dormant period and the growth of new shoots also stops. At this time, the walnut tree will stop absorbing nutrients and water and prepare for the winter.
When spring comes, the walnut trees will start growing again, and the new shoots will start to grow again. I hope mine is helpful to you
Can you add, I don't quite understand it.
Okay, no problem The growth process of a walnut tree can be divided into four stages: germination, growth, maturity, and dormancy. In the autumn of harvest, the walnut trees go into a dormant period.
At this time, the temperature becomes colder and the daylight hours become shorter, causing the hormones and nutrients in the tree's body to be transferred to the roots in order to maintain adequate nutrients during the winter**. At the same time, due to the low temperature, the metabolic rate of the tree also decreases, causing the growth of new shoots to stop. During the dormant period, walnut trees do not absorb water and nutrients from the soil, but rely on the energy stored in the trunk and roots to sustain life activities.
At this time, for the management of walnut trees, the main thing is to carry out winter protection and maintenance work. For example, a protective layer can be added around the trunk to protect it from freezing and spring pests and diseases. When spring comes, the temperature rises and the sunshine hours are extended, and the walnut trees enter the growing season.
At this point, the growth of the shoots also starts again, and the trees absorb nutrients and water from the soil to support the growth of the shoots. At this stage, for the management of walnut trees, timely pruning and fertilization are required to ensure the healthy growth of the trees.
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Generally in September, the new shoots that have not stopped growing should be properly topped, and the winter pruning should be appropriately advanced in October, which can effectively promote the development and enrichment of branches and enhance their overwintering ability.
Overwintering summer cultivation of walnut grafted seedlings.
1.The budding time should be as early as possible, and the grafting time is to make the new sprout seedlings fully lignified and thick during the growth period, so that the seedlings can safely overwinter in winter. The best time to do this is from the end of May to the end of June.
At this time, the branches are full and strong; The buds are full and accumulate more nutrients, which helps to improve the survival rate of bud grafting.
2.At the end of August, the grafted seedlings are controlled with water and fertilizer, so as to control the growth of seedlings, if the degree of lignification of seedlings is not enough, it is easy to frostbite in winter, and the wintering performance is poor.
The month to stop growing, water control, fertilizer, the month is to control the growth of grafted seedlings, so that grafted seedlings can safely overwinter.
4.The grafted seedlings of intercropping should be controlled with large water and fertilizer, and the management of water and fertilizer should be strengthened before the end of July, and the new shoots that stopped growing in August should be properly topped to promote the thick branches, and the seedlings should be fully lignified and safely overwintered in winter.
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Share with you the best grafting time for walnuts, but pay attention to distinguish the male flower buds, otherwise it will fail!
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