How do plants survive the winter?

In winter, there is a gust of cold wind outside. On the indoor windowsill, the cat stretches in the sun, the dog sleeps on the carpet, the friends in the South quietly put on the autumn pants, and the friends in the north have already put on the down clothes. How do thousands of plants in nature survive in the cold winter? Here is a wonderful way for plants to spend the winter.

Method 1. Take off the "leaves" on your body

It's common for us to see bare plants standing there in winter, because the decrease of temperature changes their bodies, which leads to the beginning of leaf falling. When the weather is getting cold and the time of day is shortened, it begins to transmit the nutrition in the leaves to the branches, which makes the leaves begin to wither and the plants enter the dormancy period. After entering winter, the plant "takes out" the previously stored nutrients, decomposes these nutrients under the action of enzymes, so as to increase the concentration of plant cell fluid, so as not to be easily frozen.

Method 2. Adjust the water content of the body.

Plants, like us, have physiological changes all the time. In winter, plants will reduce energy consumption and enhance cold resistance. Take conifer for example, it can survive at minus 40 degrees, which shows its very strong survival ability. In winter, we find that many outdoor plants will wither, but don't mistake it for dead plants. This is the way they protect themselves from frostbite in winter. Plant wilt is to reduce the performance of water absorption, reduce the water content in the body.

Method 3. Other ways

1. The way that pine and cypress spend the winter looks very advanced. Their leaf structure is relatively unique. In order to resist the cold in winter, they mainly achieve the goal by avoiding the moisture emission. The epidermis cell wall of the plant leaf is very thick. When the weather is cold, the cells of the lower skin close. At the same time, the activity of the root system is reduced, and the water content in the body is reduced.

2. Some plants have their own tips for heat preservation. Most of the annual plants will store their energy in the seeds, and the seeds will continue to reproduce after transmission. For perennial plants, they will store nutrients in the root system before winter comes, so as to accumulate strength for the next year.

3. In addition, some plants do not hide these necessary nutrients in seeds or roots, but reduce free water to resist severe cold, such as winter wheat, rape, etc., which store a lot of nutrients in their bodies.

Chinese rose