How do trees spend the winter?

Question 1: How do trees spend the winter? Trees hibernate for the winter. "Dormancy" means sleeping, but trees are usually "dormant" in winter. After autumn, the temperature gradually decreases and the sunshine time is shorter day by day. In order to adapt to climate change, trees have changed from the rapid growth stage in summer to the slow growth and stop growth stage. At this time, the cell division activity of trees slows down, the lignification degree of branches accelerates, and the organic matter made by leaves is transported to roots, stems and branches for storage. The buds of trees will grow layers of scales, and some scales are covered with a layer of fine hair. Winter buds are wrapped tightly, just like being wrapped in a quilt. After the weather turns cold again, the leaves of most trees fall off, while the wax layer on the surface of conifers or evergreen broad-leaved trees becomes thicker, which can reduce water evaporation and improve cold resistance, so the leaves do not fall off. When trees spend the winter, on the surface, they seem to temporarily stop growing. In fact, the whole winter, the tree is still moving slowly, and the leaf buds and flower buds of the tree are constantly developing and enriching. After the arrival of spring, the buds grow up slowly, the scales gradually fall off, the branches spit out young leaves and new branches, and the buds bloom with beautiful smiles.

Question 2: Do you know which trees spend the winter? Fertilization is very important for flowers and trees in winter, but not all flowers need fertilization. Fertilization should be stopped in dormant and semi-dormant balcony potted plants; For foliage plants with vigorous growth, 0.3% urea solution can be sprayed or poured, and multi-element compound fertilizer particles can also be sprayed on the basin surface; For flowers and trees that mainly enjoy flowers and fruits, such as white orchid, Milan, pomegranate, crape myrtle, jasmine and so on. It is necessary to continue topdressing available phosphorus and potassium fertilizer; Used for elm, broom, holly, Podocarpus, triangle maple, Myrica rubra, boxwood seeds, etc. After each pruning, you can apply a thin fertilizer again. The flowers on the balcony in winter are also very particular about watering and spraying water. In terms of water temperature, don't be too different from soil temperature and air temperature; The watering time can be before 10 in the morning or after 4 pm. While watering, don't neglect to loosen the soil for potted plants. It is best to put a small amount of ferrous sulfate in some ornamental plants. Because the leaves of some flowers wither in winter, they should be pruned in time. Especially the stump bonsai needs to be pitted or pruned. In addition, it is necessary to do a good job in pest control and use trichlorfon and other drugs to prevent the occurrence of pests and diseases. Some plants spend the winter by keeping buds, such as poplars and willows; Some plants rely on seeds for winter, such as sunflowers and soybeans; Some plants rely on roots for winter, such as dahlias and sweet potatoes; Some plants rely on seedlings for winter, such as winter wheat and spinach. Plants first accumulate a lot of nutrients in winter, and then shed leaves in autumn, so trees lose transpiration and reduce the emission of heat and water in the body. As the saying goes, the water flows forever! Adding snow water that can be obtained directly in winter can be said to be a breeze!

Question 3: How do flowers and trees spend the winter? In what way? Some plants spend the winter by keeping buds, such as poplars and willows; Some plants rely on seeds for winter, such as sunflowers and soybeans; Some plants rely on roots for winter, such as dahlias and sweet potatoes; Some plants rely on seedlings for winter, such as winter wheat and spinach.

Plants first accumulate a lot of nutrients in winter, and then shed leaves in autumn, so trees lose transpiration and reduce the emission of heat and water in the body. As the saying goes, the water flows forever! Adding snow water that can be obtained directly in winter can be said to be easy.

Question 4: How do those trees spend the winter? Trees are also pitiful in winter. Pay attention to keep the trees warm. Logarithms can be whitened.

Question 5: How to protect flowers and trees in winter? Flowers and trees should overwinter according to the method-

1. Flowers and trees that can't overwinter outdoors should be moved indoors or in a sunlight greenhouse.

2. For indoor immobile flowers and trees, leave them 20-30cm off the ground, cut off the rest and cover them with soil or weeds or plastic film.

For those cold-resistant flowers and trees, just paint them white with lime.

Trees, flowers and trees can be tied to the trunk with straw rope or straw. .

Question 6: How can trees and trees spend the winter safely? In recent years, the greening area in Liaocheng City has greatly increased, and the tree species have become increasingly rich, especially the introduction of southern tree species, which has greatly improved the greening effect of our city and made the winter color no longer single. However, due to the long winter time, dryness and drastic temperature changes in our city, it is very harmful to trees, especially some evergreen species, newly introduced species and some seedlings with weak cold resistance. Some measures should be taken in order to make the trees overwinter safely and prevent freezing injury in winter.

First, pour frozen water in time.

Before the soil freezes, water the trees once in time to fully meet the water demand of the trees. Trees absorb enough water and store a lot of water, which can effectively slow down the transpiration of water in the trees in winter and keep enough water in the trees. At the same time, due to the increase of soil moisture, it is beneficial to improve the microclimate and reduce or avoid bolting, dryness or death of young trees.

Generally, when the ground temperature is higher than 5℃, the plant roots absorb water, and when it is lower than 5℃, the plant roots cannot absorb water. Therefore, before the ground temperature is below 5℃, it must be watered 1 time. Therefore, winter irrigation should be carried out in the middle and late period of 1 1.

Second, strengthen anti-freezing and heat preservation measures.

1. Cover the soil for cold protection: Before the soil is frozen, the newly planted young trees with poor cold resistance can be directly pressed down and buried with fine soil with a thickness of 15 ~ 20cm. Pay attention to the smoothness and compactness of the soil surface when covering the soil to avoid air leakage and rain leakage. Check frequently after covering the soil, and cover the bare seedlings in time.

The method of covering soil with cold is suitable for evergreen coniferous seedlings such as Pinus tabulaeformis and Pinus sylvestris var. mongolica. Quercus mongolica, spruce, Platycladus orientalis and Sabina vulgaris, and some deciduous flowering shrubs such as roses, Chinese rose and evergreen boxwood. This method is not suitable for moldy tree species.

65438+ 0~2 weeks before seedling raising in the next spring, when the temperature is stable at about 5℃, the soil should be cultivated twice, not in windy days, which is beneficial to delaying seedlings and gradually adapting them to the changes of environmental conditions. The soil should not be removed too late, otherwise the soil will thaw and sink and attach to the seedlings, which will affect the growth and make the operation inconvenient. Irrigation should be done in time after digging to prevent spring drought.

2. Root neck cultivation: After irrigation in winter, cultivate a mound with a diameter of 50-80 cm and a height of 30-50 cm on the root neck of the tree, or cultivate a crescent ridge with a height of 50-60 cm on the north side of the root trunk to prevent the root neck and root system from freezing injury, and at the same time, reduce the evaporation of soil moisture and change the microclimate conditions around the root body, thereby increasing the soil temperature and reducing freezing injury.

The time for burying trees for cold protection or root neck cultivation in Liaocheng is generally165438+1late October.

3. Erecting wind barriers: In order to reduce the freezing damage caused by cold, dry and strong winds, wind barriers can be erected in the windward direction of trees. Windshield materials are often plastic tarpaulins, sorghum stalks or corn stalks, and their height is higher than that of trees. Chinese fir, bamboo pole, etc. It is usually fixed or nailed with stakes to prevent strong winds from blowing down. It can also be wrapped in plastic tarpaulins. This method is used for cold protection of evergreen conifer seedlings or some precious tree species and newly introduced broadleaf seedlings.

4. Tree trunks turn white: In winter, due to the sudden change of temperature, tree trunks or branches are directly exposed to the sun during the day, and the local temperature rises, and bark cells are active, while at night, the temperature drops sharply, and bark tissue cells can't adapt to it, resulting in tissue freezing and necrosis. After the trunk is painted white, part of the heat can be refracted back by the white reflected light, so that the temperature of the tree body will not rise rapidly and remain stable, and there will be no icing phenomenon, which can reduce or avoid the occurrence of sunburn.

The formula and usage of whitening agent: 0/0 part of quicklime/kloc-,2 parts of sulfur mixture, 0/0 part of salt/kloc-,2 parts of clay and 36-40 parts of water. First, slake the lime with water, filter out the dregs, pour in the melted salt, and then mix in the stone sulfur mixture and clay. Salt mainly deliquesces, which can prevent dry cracking and peeling after coating, clay plays an adhesive role, and the mixture of sulfur and stone can also kill overwintering eggs and prevent pests and diseases. Coating liquid preparation should be dry and thin, and it is advisable not to lose when brushing.

5. Covering with plastic film: the seedbed is supported into an arch with steel bars and bamboo pieces, and the plastic film is covered on the seedbed to make a small arch shed, and the surrounding is tightly buried with soil. Suitable for wintering and cold protection of all kinds of shrubs and grass flowers in road isolation zones. In addition, bottom water should be poured before plastic film mulching. The method has the advantages of heat preservation and moisture retention, proper temperature and humidity and convenient management. If it is cold in winter, you can cover the plastic arch shed with a thick straw curtain to prevent cold and keep warm.

6. Trunk binding: For tree species and varieties with poor cold resistance, the trunk and main branches can be wrapped around the big tree with straw handles or chicken skin bags, and all the young trees can be wrapped.

7. Chemical control method: spray antifreeze with antifreeze before freezing, usually for 3~5 times.

8. Clear the snow on the roots in time: some tree species and varieties have poor cold resistance, and the root neck is long in winter and spring. & gt

Question 7: How do birch trees spend the winter? Betula platyphylla is a pioneer tree species in the secondary forest, because it grows on the hillside or forest at an altitude of 400-465,438+000 meters, with strong adaptability and wide distribution, especially suitable for wetting soil. There are pure forests in Daxing 'anling, Xiaoxing 'anling and Changbai Mountain in China, and they are also common tree species in broad-leaved deciduous forests and mixed coniferous and broad-leaved forests in the mountainous areas of North China Plain and Loess Plateau and southwest China.

I like light, but I don't like shadows. Cold-resistant Strong adaptability to soil, like acid soil, swamp, dry sunny slope and wet shady slope can grow. Deep roots, barren tolerance, often mixed with Korean pine, larch, aspen, Mongolian oak or pure forest. Good natural regeneration, fast growth, strong germination and short life.