Management of walnut seedlings after grafting, how to manage walnut tree seedlings after grafting

1. It is to do a good job of irrigation, and the heavenly stem is irrigated once in 20 days.

2. Do a good job of removing wild seedlings.

3. It is to prevent pests and diseases, and do a good job of spraying and fertilizing in time.

1. Fertilization: Nitrogen and potassium are the main components of walnut, and nitrogen is more than potassium, increasing nitrogen fertilizer can significantly improve yield and quality, phosphorus and calcium must also be supplemented in phosphorus-deficient soil, and organic fertilizer must also be added. Fertilization of young trees should take the principle of thin application and diligent application, top dressing from the year of planting to germination, once a month, to the end of September to apply a base fertilizer, the second 4th year, a total of 4 times of fertilizer in March, June, August and October every year.

Adult trees (referring to the 4th and 5th years after the planting of grafted seedlings) can apply basal fertilizer once a year and top dressing 2 times. The basal fertilizer was applied in autumn after fruit picking combined with soil deep ploughing and pressing green (September to October), and 5000 kg of organic fertilizer (livestock and poultry manure), 50 kg of phosphate fertilizer, 100 kg of plant ash, and 15 kg of urea were applied per mu. Top dressing was applied twice, the first top dressing was applied before germination, 1500 kg of pig manure and 20 kg of urea per mu.

The second top dressing is applied in the hard core period (6 July) to increase fruit weight and promote flower bud differentiation, 2500 kg of pig manure can be applied per mu, 30 kg of urea, 20 kg of potassium sulfate, and 20 kg of superphosphate. 2 Irrigation. Walnuts like moisture, and irrigation is an effective measure to increase yield.

During the growth period, if the soil is dry and lacks water, the fruit setting rate is low, the peel is thick, and the kernel is not full. If you do not irrigate after fertilization, you will not be able to give full play to the fertilizer effect. Therefore, irrigation should be carried out at the right time during various periods such as flowering, rapid fruit growth, and fertilization. For the garden with poor site conditions, fertilizer leakage, water leakage, and barren soil, soil improvement can be carried out by means of guest soil and more organic fertilizer to maintain the normal growth and fruiting of the tree.

1. Leave a certain growth space for grafted trees, and remove weeds and crop seedlings within a meter range around the trunk in time to facilitate their survival and growth;

2. Germination: When the bud of the graft scion has germinated and slowly picks up the branches, the sprout on the rootstock should be removed in time;

3. Wind break: When the new shoots of the scion grow to about 30 cm, a wooden stick with a length of 4 feet and a thickness of 6 minutes should be tied at the interface in time, and the new shoots should be gently tied to the wooden stick to prevent the branches from breaking due to wind or heavy rain;

4. Loosening: loosen the scion when the sock tip grows to 1 foot, and after 60-80 days of grafting, the interface binding rope should be relaxed once, but it cannot be removed;

5. Unbinding: Trees that grow faster after grafting should be untied within 30 days after loosening the binding rope to prevent the rootstock from breaking due to too deep strangulation;

6. Topping: When the length of the new shoot reaches about 2 feet, cut off or remove 1-2 leaflets at the top of the new shoot to promote the growth of thickening;

7. Fertilization: 5 to 20 kg of farm fertilizer is applied to the grafted trees in August in the autumn of the same year, and the specific increase or decrease is appropriate according to the size of the tree.

Summary. Hello, 15 to 20 days after grafting, the scion can sprout, at this time you can tear open a small plastic bag on the scion, so that the new shoots are exposed, and when the new shoots grow to 20 cm, you can remove the bandage. At the same time, proper topdressing and irrigation of the mother tree, strengthening the control of pests and diseases, regular soil loosening, weeding and other management are conducive to the survival of grafting.

Hello, after grafting 15 20 days, the scion can sprout, this reputation can be the scion on the small plastic bag to tear open a hole, so that the new sprouts dew out of the mountain, when the new shoots grow to 20 cm, you can lift the bandage. At the same time, proper topdressing and irrigation of the mother tree, strengthening the control of pests and diseases, regular soil loosening, weeding and other management are conducive to the survival of grafting.

Hope mine is helpful to you.

Walnut seedlings grafted at the end of April and early May of the lunar calendar, can also be based on the growth of local walnut trees, that is, the length of the newly plucked branches of the grafted rootstock is about one foot, and the dryland and mountainous areas can also be less short, and the small walnut of the superior mother tree to be picked scion grows to the size of quail eggs to the size of a table tennis ball, which is too early and too tender, and it is not conducive to survival when the heart is white late.

The selection of rootstock and scion, choose one-year-old to perennial walnut seedlings with strong affinity, and can also be used for the replacement of old trees, and the old trees should be pruned in advance to facilitate grafting. The scion selects the branches of the walnut that grows in the current year of the superior mother tree (so that the grafting survives in the current year and can bear fruit in the second year) or the branches that bear fruit in the second year on the superior mother tree.

Grafting method, cut 5 9 cm (length depends on the density of ear buds) scion, leave 1 2 full buds on it, the lower end of the scion with a sharp thin blade on both sides into a wedge, the bevel must be natural and smooth, and reserve 4 6 leaves on the rootstock.

Cut off the tender tip, split the length to be slightly longer than the inclined plane of the scion, insert the scion, the scion and the rootstock should be as thick as possible, if different, to be aligned on one side, and then use the film strap from the bottom to the top together with the scion to tie tightly, be sure to tighten some to prevent contact is not real, check the survival rate after seven days, in case of drought, half a month later to replenish water to facilitate the germination of ear buds. If it still does not survive after the second grafting, wait for mid to late May to use the skin bud grafting method to make up the grafting, the specific method is to take the newly plucked branches on the mother tree of the year to make the scion, and cut off the leaves and tender tips immediately after cutting. Take a full bud up and down with a knife, the whole bud is 2 4 cm long, 1 2 cm wide, don't be busy removing it after cutting, but cut the same size of bark in the middle of 1 2 leaves at the base of the rootstock, pay attention to the lower end of the bark left a millimeter wide and one centimeter long to put the trough to facilitate survival, and then quickly remove the bud piece on the scion and stick it on the rootstock, and also tie it tightly with a film bandage.

The management after grafting and transplanting is very important, which is related to the survival rate of seedlings and the quality of seedlings. The focus should be on the following management work.

When the ear buds break the soil, the mulch should be removed in time to prevent the seedlings from being burned at high temperature. The unwrapping time depends on the local climate. Transplanted in March in the seedling area of Zhejiang, 10 to 15 days to remove the film; Transplanted in early April, the film is removed in about 7 days.

If the temperature exceeds 20 continuously, or in the area with strong solar radiation on the Yunnan-Guizhou Plateau, the observation should be strengthened and the film should be removed in time.

Inspect the soil. Too little soil is easy to expose the ear head and lose water and dry up, affecting survival, so it is necessary to press fine soil in time; If the soil is too thick or the soil surface is crusted, it is difficult for the spike buds to top the soil surface and cause stuffy buds. After most of the buds are unearthed, use small bamboo pieces to gently pick up the soil of the ungerminated plants to facilitate the spike buds to stand out.

Peel off the anvil buds. When the rootstock and scion of the grafted seedlings germinate, the rootstock buds will consume a part of the nutrients and affect the normal growth of the ear buds, so the rootstock buds should be peeled off in time.

Fertilization fertilizer is a necessary substance for the growth of mulberry seedlings, fertilization should be mastered in a timely and appropriate amount, when the ear buds are all grown to grow 5 leaves, apply the first seedling fertilizer, 10 15 kg of compound fertilizer per mu; At the end of May, 10 kg of urea per mu was applied. In mid-July, 15 kg of urea per mu was applied. In late August, 15 kg of urea per mu was applied.

The fertilization method should be sprinkled between the rows, clear the ditch and cover the soil, reduce the loss of fertilizer, and pay attention to prevent the fertilizer from being sprinkled on the leaves to avoid burning. Due to the different soil quality and fertility in different places, the amount of fertilizer varies greatly.

Drainage and irrigation water. Mulberry seedlings can not grow without water, in the whole process of cultivating mulberry seedlings, to observe the water situation of the nursery at any time, should be irrigated in time when drought, it is advisable to drain the water immediately after the seedbed is soaked in the evening. When there is too much rain, dredge the drainage ditch in time to prevent water accumulation in the nursery.

Cordyceps control.

The damage of Cordyceps will affect the healthy growth of mulberry seedlings. Therefore, during the growth period of mulberry seedlings, it should be observed diligently and the prevention and control should be strengthened, and the control methods of mulberry diseases and insect pests can be referred to.

Erase the buds from the rootstock; After the scion survives, it is necessary to prevent and control the harm of hookworm; Also prevent the wind from breaking the saplings. All other management is the same.

Walnut seedlings are actually grafted once and cut slightly twice.

Grafting process: Cut the one-year rootstock slightly flat (leave 50-100 cm in height), so that it is slightly easier to graft with a new vigorous growth. Grafting is carried out in early to mid-June (generally with bud grafting), after the grafting survives, cut off the part above the interface (be careful not to hurt the solution buds) to prevent it from robbing the nutrients of the grafted buds, which is conducive to the rapid growth of the grafted buds.

Grafting: One of the methods of artificial vegetative propagation of plants. That is, the branches or buds of one plant are grafted onto the stems or roots of another plant, so that the two parts that are joined together grow into a complete plant.

The methods of grafting are divided into branch grafting and bud grafting. When grafting, the scion should be tightly integrated with the cambium layer of the rootstock to ensure the survival of the scion. The grafted branch or bud is called the scion, and the grafted plant body is called the rootstock or table wood.

Seedlings with 2 to 4 buds are generally selected for scion, which become the upper or top of the plant body after grafting, and rootstock becomes the root part of the plant body after grafting.

I guess I'm one of the more knowledgeable, hehe.

First of all, negate your question: walnut seedlings are not grafted twice, but once.

The process of grafting is often sowing in one year, growing rootstock seedlings, flat stubble in the second year, and then leaving a new one that grows vigorously, and the height can reach 50-100 cm in early to mid-June. The "two grafts" you are talking about are actually the two "bends" left by the "flat stubble" in the spring and the "cutting anvil" after grafting, not "two grafting".

As for the extra points, no need, as long as it helps you.