What is the best way to protect the sapling from freezing in winter

1) Pour antifreeze water.

Proceed before the soil freezes. The closer to the freezing time, the better the effect. After watering the soil once before freezing, and the soil contains more water, the surface ground temperature will not drop too low or too fast in severe winter, and the surface ground temperature will rise slowly in spring.

Watering back to green water is generally carried out in early spring, due to the large temperature difference between day and night in early spring, timely watering back green water can make the surface temperature difference between day and night relatively small, to avoid spring cold damage to plant roots.

2) Bury cold-proof soil.

Fully buried: suitable for seedlings with smaller sizes and elastic stems. Proceed before the soil freezes.

Press the seedlings down in the anterior, cover the seedlings tightly from both sides, and cover the soil thickness of 10 15 cm. Soil cultivation is carried out after deciduous seedlings and other leaves have fallen. To one-year-old juniper, small-leaved boxwood.

The seedlings can be covered with a puff bag piece first, and then covered with soil and compacted.

Soil cultivation: suitable for seedlings with large specifications or hard and brittle dry stems, such as privet, pomegranate, cedar, and transplanted seedlings in the current year. After pouring frozen water, the soil is cultivated around the seedlings, and the soil is 30 to 50 cm high.

The burial time should not be too early, and the burial should start a little before the soil freezes. Seedlings buried too early are perishable. The time of soil removal in the spring of the second year is also very important, early withdrawal is prone to physiological drought, and late withdrawal is easy to cover up the seedlings and even rot. Mulch soil should be withdrawn in two phases at the time of seedling emergence or before the seedlings begin to grow.

3) Build a wind barrier.

It is used for evergreen tree seedlings, such as cedar, dragon cypress, and large-leaved boxwood.

Cold-proof seedlings such as big-leaved privet. Generally, in autumn and winter, straw or plastic cloth is used, and now polypropylene color strip woven cloth is mostly used to make wind barriers around the periphery of the plant to prevent cold. Wind barriers should be erected on the north and west sides of the seedling area. The effective cold protection distance of the wind barrier is 10 times that of the wind barrier.

4) Scientific fertilization.

Less nitrogen fertilizer is applied in autumn to control the growth of seedlings, promote the growth of seedlings, and enhance their own cold resistance.

5) Dried seedlings wrapped.

For large seedlings, mostly before winter, the seedlings are wound or wrapped with straw rope or sack pieces, and the height can be about meters.

6) The seedlings are dried and whitened.

For large seedlings, generally carried out in autumn, with lime water.

Add salt or stone sulfur mixture.

The seedlings are whitened, and the white is used to reflect sunlight to reduce the absorption of solar radiation heat by the seedlings, so as to reduce the temperature difference between day and night of the seedlings and prevent the bark from freezing. The focus is on the southwest side of Miaogan. In addition, this method also has a certain effect on the prevention of pests.

Perform before freezing. Coat the stems with hydrated lime.

A protective film is formed. For some seedlings with poor cold resistance and seedlings that are afraid of sunburn, such as toon and persimmon.

Acacia, plane tree, horse chestnut.

This method is commonly used. The concentration of the whitening agent should not be too viscous, and an appropriate amount of adhesive should be added to prevent the coating from falling off. The formula of the whitening agent: 5 kg of lime, kg of sulfur, 20 kg of water.

Sketch: What is the best anti-freezing method in winter, if this is the case, it should be possible to figure one, that lime, that can prevent insects and freeze.

In winter, the temperature is relatively low, plants, animals and humans, too, should pay attention to keeping warm in the low temperature environment, otherwise they will freeze or even freeze to death, except for a small number of particularly cold-tolerant animals and plants. So in the winter, we often see outdoor trees being wrapped around ropes or other things, just to keep warm.

1. Apply a layer of white paint containing quicklime to the trunk. The white paint can reflect light during the day, reduce the temperature difference between day and night at night, prevent plants from being frostbitten, effectively kill pests on tree trunks, and make plants overwinter smoothly.

2. In the low temperature environment in winter, in order to avoid frost damage to trees, from October to November, after the plants enter a dormant state, wrap a layer of straw or wheat straw around the soil, tie them tightly with ropes or wrap them on the suitcase. A layer of plastic film to keep you warm and cold.

3. If the tree is small and the height is about 1 meter, you can bag it to keep warm. In the afternoon, when the weather is sunny and the light is sufficient, it is necessary to open the bag in time to strengthen air circulation. When the temperature rises, proper watering is required to keep the soil growing in a slightly moist state.

4. At the beginning of November every year, it is necessary to water antifreeze water and accumulate soil at the base, which can effectively improve the cold resistance of plants. In addition, it is necessary to prune diseased branches and dead branches to improve the ventilation and ventilation between branches and leaves, so that the leaves can fully photosynthesize and grow more vigorously.

Perennial shoots are frost damaged, and the bark is often partially frost damaged. The frozen part has slight discoloration and sag at first, which is not easy to find. If you pick it up hard, you will find that the bark has turned brown; It gradually dries and dies, and the bark cracks and falls off.

If the cambium is not frozen, it can recover gradually. When the trunk freezes, some longitudinal cracks will form, commonly known as "freeze cracking". Young tree trunks that grow too large are susceptible to frost damage, and these wounds can easily lead to rot.

Branchial frostbite has a variety of manifestations. Some cortex and cambium turn brown after freezing, and then the trunk is depressed. The smaller the angle between the main branch and the bottom of the trunk, the more serious the frost damage at the bottom corner of the branch.

These properties vary depending on the degree of frost damage and the species and species. When the root neck is frozen, the bark first changes color and then dries up, which can occur locally or in a ring shape. Frostbite on the root neck is very harmful to plants.

If the whole plant freezes to death, it cannot survive. If only the above-ground part dies while the underground root system continues to grow, it will continue to germinate and grow again next spring. This condition generally refers to perennial herbaceous plants that survive on underground root systems.

Underground roots can survive for more than ten years. If the growing environment exceeds their tolerance limit, they will recycle nutrients and go into a dormant state.

1. Increase the application of phosphorus and potassium fertilizer to promote the lignification of seedlings. From November, potassium dihydrogen phosphate should be fertilized outside the roots every ten days to half a month, and sprayed three times in a row. Or apply 4-5 quintals per mu with plant ash each time, twice in a row. Nurseries will stop applying nitrogen fertilizer after autumn.

2. Boron is sprayed outside the root to improve cold resistance. From November, borax liquid or mixed with potassium dihydrogen phosphate is sprayed every 10 days. Squirt three times in a row.

3. Winter protection, seedlings with weak cold-resistant eggplant ability can be buried in the soil for wintering, and precious seedlings can be built with anti-freeze greenhouse (greenhouse). Alpine nurseries can be set up with wind barriers, that is, hanging pine firewood branches on the windward side to resist the cold wind. Sprinkle a layer of straw or thatch on the seedlings to keep warm.

4. Irrigation and anti-freezing, on the eve of frost, diving in the nursery can make the soil temperature not lower than 0, and the seedlings will not freeze to death.

5. Smoke and cold, especially cold weather, you can set up 2-3 smoke piles around the nursery, light the smoke when the temperature drops to 0, and keep the smoke until sunrise.

1. Whitening method: In winter, the branches of the trees are painted white with quicklime and stone sulfur mixture, which can help prevent insects and frost.

2. Wrapping method: covering the upper periphery and above the trees with a layer of film, or wrapping the trees with straw, can play the role of windproof and anti-freeze residue. If the tree is very tall, you can build a greenhouse around it to prevent it from freezing.

3. Irrigation of frozen water: In areas where the soil is easy to freeze in winter, before the land is frozen, fill enough water once, which is called "frozen water". The time of pouring frozen water should not be too early, otherwise it will affect the cold resistance.

Generally, it is advisable to irrigate during the period of "daily and night freezing", so that after the freezing, a permafrost layer will be formed around the roots of the trembling tree to maintain a relatively stable temperature and not cause damage to the plants due to sudden changes in the external temperature.

AbstractThe method of anti-freezing of fruit trees is actually relatively simple, which can generally be carried out in winter by irrigating water before freezing, whitening the trunk, wrapping the tree body, increasing the temperature of fumigation and fertilizing the tree, etc., and the method is also quite effective.

1. Irrigation before freezing.

Watering the orchard fruit trees once before the soil freezes is conducive to water storage and moisture increase, stabilize the ground temperature, and prevent frost damage to fruit trees.

2. Paint the trunk white.

Before winter, the trunk and main branches of the fruit tree are evenly whitened with a whitening agent, which can not only prevent frost and sunburn, but also kill the germs, eggs and adults hidden in the trunk. When brushing, it is necessary to be meticulous, so that the whitening agent can penetrate into the cracks of the tree, especially the diseased branches, bark cracks, and branches should be focused on brushing.

3. Tree wrapping.

For fruit trees with poor cold resistance, you can use grain grass or grass rope to wrap on the trunk or main branch, which can not only prevent the invasion of cold wind, but also reduce the loss of water from the trunk, and the anti-freezing effect is better.

4. Smoke heating.

When the weather is colder, you can use weeds, sawdust, chaff shells, etc. as fuel, light it at about 12 o'clock at night, pay attention to control the fire, and it is advisable to use the dark fire smoke to make the smoke fill the entire orchard, and stop the smoke until dawn in the morning, so that it can play a good anti-freezing role.

5. Fertilize and strengthen the tree.

Before the arrival of winter, apply some fertilizer to the fruit trees, which can play a role in strengthening the trees and enhance the cold resistance of the fruit trees, so that it can have a good anti-freezing effect.

How to prevent freezing of fruit tree seedlings.

The method of anti-freezing of fruit trees is actually relatively simple, generally through irrigation before freezing, whitening of the trunk, wrapping the tree body, fumigation and warming, and fertilizing the tree, etc., can be anti-freezing in winter, and the method is also quite effective. 1. Irrigation before freezingWatering the orchard fruit trees once before the soil freezes, which is conducive to water storage and moisture increase, stabilize the ground temperature, and prevent frost damage to fruit trees. 2. Whitening the trunk Before winter, the trunk and main branches of the fruit tree should be evenly whitened with a whitening agent, which can not only prevent freezing and sunburn, but also kill the germs, eggs and adults hidden in the trunk.

When brushing, it is necessary to be meticulous, so that the whitening agent can penetrate into the cracks of the tree, especially the diseased branches, bark cracks, and branches should be focused on brushing. 3. For fruit trees with poor cold resistance, you can wrap grain grass or grass rope around the trunk or main branch, which can not only prevent the invasion of cold wind, but also reduce the loss of water from the trunk, and the anti-freezing effect is better. 4. When the smoke warms up and the weather is colder, you can use weeds, sawdust, chaff shells, etc. as fuel, ignite it at about 12 o'clock at night, pay attention to control the fire, and take the dark fire smoke as appropriate, so that the smoke fills the entire orchard, and the smoke can be stopped at dawn in the morning, so that it can play a good anti-freezing role.

5. Before fertilizing and strengthening the tree before winter, apply some fertilizer to the fruit tree, which can play a role in strengthening the tree and enhance the cold resistance of the fruit tree, so that it can have a good anti-freezing effect.

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The method of cold protection of evergreen trees is to build a cold wind barrier.

Types and methods of cold protection:

Erection of wind barriers: For the requirements of cold-proof wind barriers for evergreen plants, they should be erected on the windward side and the adjacent sides. In the windward direction, the size is suitable, the height exceeds the height of the plant in meters, and the distance from the horizontal distance of the plant is kept in meters.

The wind resistance of the wind barrier is required to reach level 8 or above, the distance between the two vertical rods is required to be meters, the distance between the crossbars is not more than meters, and it must be straight, and the main frame of the wind barrier must be reinforced with diagonal braces. Moreover, the cold-proof pole can not exceed the cold-proof cloth, and the cold-proof cloth is required to be tied with nylon grass, and the spacing is not more than 10cm. The wind barrier is required to be stable, the shape is regular, the height is consistent, and the beauty is beautiful.

Applicable plants for cold barriers: For evergreen conifer seedlings or some precious tree species and newly introduced broad-leaved tree seedlings, when their growth is weak, the barrier cold protection method can be adopted.

Trees and shrubs: trunk insulation.

Effect requirements: the grass and mulch should be wound from the rhizosphere to the branch point or a certain height, and the trunk epidermis can not be exposed when winding the grass and straw, and it is required to be compact and not fall off. The covering soil is regular and highly consistent, so as to achieve a unified and beautiful effect.

Winter planting seedlings need to pay special attention to cold resistance, cold winter is very easy for seedlings to frost damage, if you do not pay attention to protection, seedlings need more care after frost damage. I would like to introduce you to the key points of planting winter seedlings.

When planting seedlings in winter, you need to pay attention to cold protection.

1. Root watering is sufficient and thorough: immediately after planting, irrigate once permeable to ensure that the roots of the tree are closely integrated with the soil, promote the development of the root system, irrigate 2 or 3 times in a row, and seal the tree tray with fine soil in time after irrigation.

2. Watering frozen water: while irrigating enough root water, if the soil is dry before the soil is frozen, it should be watered again. The time of pouring frozen water should not be too early, otherwise it will affect the cold resistance.

Generally, it is advisable to irrigate during the period of "daily and night freezing", so that after freezing, a permafrost layer will be formed around the roots to maintain a relatively stable root temperature and not cause damage to plants due to sudden changes in external temperature.

3. Backfill filling: The soil should be compacted in layers when planting, and it should be filled in time when the soil sinks after irrigation. In winter construction, more attention should be paid to the planting permafrost to be broken and fine, and large frozen blocks should be picked out to avoid the frozen soil backfilling to cause voids and cause wind to the root system.

4. The planting depth should be reasonable: the planting depth should generally be level with the original soil marks, or slightly shallow but not deep, so as not to suffocate the seedlings and die if they are too deep, and avoid water accumulation.

5. Timely treatment of pruning wounds: whether it is roots or branches, wound healing ointment should be applied in time after pruning to promote wound healing and prevent water loss from causing dead branches and root rot.

6. Reasonable arrangement of planting and seedling progress: to achieve seedlings with arrival, planting, seedlings into the field should be arranged reasonably, the seedlings on the same day to be planted, no backlog of seedlings, not overnight.