Science How plants survive the winter, how plants survive the winter

How to safely enter the autumn and winter of flowers and plants, remember these points to ensure that the plants are not frozen and damaged.

Falling leaves, plants will fall off their leaves after cooling down in winter, reducing their own consumption of nutrients and water, and better wintering; Regulate the function, physiological reactions will occur in the plant in the low temperature environment in winter, and the leaves will wither, which is to avoid frostbite; Root overwintering, many years of plants will concentrate nutrients into the root system for overwintering; Seeds overwinter, the seeds of plants will fall early before the onset of winter, and they will continue to grow after the temperature warms up.

Plants are very sensitive to temperature during the growth period, and chemical changes will occur in the body after the autumn cooling, the most common state is to lose leaves, after the leaves fall will reduce the loss of nutrients and water from the plant itself, better wintering. Under the action of enzymes, the concentration of cell fluid in the plant will also increase, thereby improving its own cold resistance.

Physiological reactions will also occur in the plant in the low temperature environment in winter, which will make its cold tolerance reach its peak, so as to adapt to changes in the external environment. Seeing that most of the plants are in a withered state after winter is a protective function of the plants themselves to avoid frostbite in winter.

Perennial plants store nutrients in the root system, and even if the aboveground parts are wilted, more nutrients can be stored inside the root system, and they will germinate and grow again when the temperature stabilizes in winter. The roots of common leek and lotus root plants will wither in winter and continue to grow in the following year.

Some rhizome plants will drop their seeds in advance before falling leaves, and when they encounter rainfall or other external forces, they will bury their seeds in the soil, and when the temperature rises in spring, the seeds will sprout from the soil and take root, and plants such as lotus root and leeks rely on seeds to overwinter.

Some plants will enter a state of self-frost protection after winter, and will secrete a waxy protective film from the inside of the trunk and attach to the surface of the plant, which plays a role in keeping warm, and can also reduce the evaporation of water and the consumption of nutrients. Common apricot and locust trees secrete gum during the winter to overwinter.

Plants spend the winter by dropping leaves and regulating water.

1. Drop leaves.

In winter, it is common for beautiful plants to stand there, because the temperature drops and changes in the plants' bodies, causing them to start losing their leaves. When the weather gets colder and the daylight hours are shorter, the plant begins to transfer nutrients from the leaves to the branches, causing the leaves to begin to wither and the plant to enter the dormant period.

In winter, plants "take out" the nutrients they have stored before, and under the action of enzymes, break down these nutrients, with the aim of increasing the concentration of plant cell sap, so that they will not be easily frozen.

2. Regulate moisture.

Plants, like humans, undergo physiological changes all the time. In winter, plants reduce energy consumption and increase their ability to withstand cold. In winter, many plants outside will wither, but don't make the mistake of thinking that plants are dead, this is their way of protecting themselves from frostbite in winter.

The wilting of plants is a manifestation of reduced water absorption, reducing the amount of water in the body.

The seasonal changes of plants

1. Spring budding.

Spring is the season of recovery, most plants will start to germinate seedlings after the temperature rises and the temperature stabilizes at 15 degrees, at this time, the underground roots and seeds will continue to absorb the water and nutrients in the soil, and then grow stems, leaves, roots and other vegetative organs.

2. Leaf blooming in summer.

Plants mostly stretch their leaves in summer, enter the peak growth period and early flowering, when the plant shape is upright and erect, the leaves are wide and verdant, which can carry out sufficient photosynthesis and promote the growth and flourishing of the plant.

3. Autumn harvest and fallen leaves.

Plants produce fruit in autumn, which can be harvested after the fruit is ripe, and when the temperature begins to drop, the plant will produce hibernation to inhibit growth, prevent excessive nutrient consumption, and promote the safe wintering of the plant, while the lower tissue of the petiole will produce delamination cells, resulting in defoliation.

4. Winter dormancy.

Plants will stop vegetative growth in winter, at this time deciduous trees and evergreens will convert the protein and starch in the body into sugar, and dissolve in water, thereby increasing the concentration of cell sap, thereby preventing the occurrence of bark freezing and cracking, in addition to a small number of plants will flower and bear fruit in winter, such as plum blossoms, camellias, jujube trees, golden wither, etc.

Deciduous overwintering: Ginkgo biloba is a common deciduous overwintering plant whose leaves fall when the temperature drops. Leave seeds for the winter:

Most annual plants store nutrients in their seeds and overwinter on them. Regulate water: Plants will reduce their own nutrient consumption after winter.

Rooting for winter: bulbous plants wither on the ground in winter.

1. Falling leaves for winter

Some plants can overwinter by the method of falling leaves, when the temperature drops in autumn, the plant will gradually drop the leaves to reduce the loss of water, and under the action of enzymes, the concentration of cell sap of the plant will increase, thereby improving the ability to resist cold, among which the more common plants are ginkgo biloba.

2. Keep seeds for winter

Most annual plants will store nutrients in seeds, and then when the temperature is right, the seeds can germinate and grow into new plants, in addition, willows, poplars, apples and other plants will produce seeds in the autumn of each year, and when the seeds are ripe, they will fall to the ground, note that the seeds will be dormant in a low temperature environment.

3. Regulate moisture

After entering the winter, plants will reduce their own nutrient consumption to enhance the cold resistance of plants, such as coniferous trees, which can tolerate low temperatures of minus 40 degrees, in addition to the cold climate in winter, some plants will regulate the water and nutrients in the body, resulting in yellow leaves, dead leaves, etc.

4. Stay rooted for the winter

Plants with roots can overwinter with the help of their root systems, such as sunflowers, peonies, daylilies, etc., whose above-ground leaves wither and wither to reduce nutrient consumption, and overwinter in the soil in the form of bulbs.

In winter, it is more common for bare plants to stand there, because the temperature drops and changes in their bodies, which cause them to start losing their leaves. As the weather gets colder and the daylight hours are shorter, it begins to transfer nutrients from the leaves to the branches, causing the leaves to fall and the plant to enter the dormant period. In winter, plants "take out" the nutrients they have stored before, and under the action of enzymes, break down these nutrients, with the aim of increasing the concentration of plant cell fluid, so that it will not be easily frozen.

Plants, like humans, undergo physiological changes all the time. In winter, plants reduce energy consumption and increase their ability to withstand cold. For example, conifers can survive at minus 40 degrees Celsius, which shows its strong ability to survive.

In winter, we find that many plants outside wither, but don't make the mistake of thinking that plants are dead, this is their way of protecting themselves from frostbite in winter. The wilting of plants is a manifestation of reduced water absorption, reducing the amount of water in the body.

1. The way of spending the winter in pines and cypresses looks very advanced. They have a unique leaf structure and are designed to withstand the cold of winter, mainly by avoiding the release of moisture. The epidermal cell wall of the leaves of the plant is very thick, and the cells of the lower skin are closed when it is cold, and the root activity is reduced, which reduces the water content in the body.

2. Some plants have their own tips for conserving heat, and most annual plants will hide the energy in their bodies in the seeds, and the seeds will continue to multiply through dispersal. For perennials, they concentrate nutrients in their roots before winter to build up strength for the coming year.

3. In addition, there are some plants that neither hide these necessary nutrients in the seeds nor in the root system, but reduce free water to resist the cold, such as wheat, rape, etc. in winter, and they store a lot of nutrients in their bodies.