Why don t the leaves of the pine cypress tree fall in winter?

The pine tree was originally a tree that grew in the cold zone and high mountains, and because it lived in a cold environment for a long time, it formed its unique structure to protect against the cold. The leaves of the pine tree are needle-shaped, and due to the small leaf area, they are xerophytic in shape and structure, and are able to tolerate low temperatures and drought, thus allowing them to live longer. The elongated needle is semicircular in cross-section, the epidermal cell wall is thick, and it has a thick stratum corneum.

Within the epidermis there are several layers of thick-walled cells, and the stomata sink into the thick-walled tissue under the epidermal layer. The wall of the mesophyll tissue cell forms a protrusion inward, which penetrates deep into the cell cavity, and the chloroplast is distributed along the surface of the deep protrusion, which increases the distribution area of chloroplasts and also expands the area of photosynthesis. Keep the chlorophyll from disintegrating, stay green, and don't fall leaves.

Most of the pine trees do not lose their leaves in winter, such as masson pine, five-needle pine, etc.; But some of them fall off their leaves in winter, such as larch. It depends on which species of pine it is.

Reasons: 1. Pine cypress is a tree that grows in the cold zone and high mountains, and has lived in a cold environment for a long time, forming a unique cold-proof structure.

2. The leaves of pine and cypress are needle-shaped, the leaf area is small, and the shape and structure have the characteristics of drought-stricken relatives, which can tolerate low temperature and drought.

3. The slender needle is semicircular in the cross-section, and the epidermal cell wall is thick, with a thick layer of cuticle. The epidermis is made up of thick-walled cells, and the stomata sink into the thick-walled tissue under the epidermal layer. The wall of the mesophyll tissue cell forms a protrusion inward, which penetrates deep into the cell cavity, and the chloroplast is distributed along the surface of the deep protrusion, which increases the distribution area of chloroplasts and expands the area of photosynthesis.

4. This characteristic can keep the chlorophyll base without disintegration and keep it green, so the pine and cypress trees will not lose their leaves in winter.

Pine trees do not lose their leaves in winter, because their leaves are needle-shaped, and there is a waxy layer, which has good water retention capacity and can protect the plant from frost damage.

Pine trees do not lose their leaves in winter, because their leaves are needle-shaped, and there is a waxy layer, which has good water retention capacity and can protect the plant from frost damage.

Pine trees like a warm environment, and when the temperature drops in winter, they should often be taken outside to receive sunlight to improve their cold resistance, and they also need to open windows when the weather is fine to improve air circulation to avoid breeding germs.

Pine trees in the usual maintenance, the demand for water is large, after winter, the water evaporation rate slows down, the frequency of watering should also be reduced, keep the soil in a dry state, watering should pay attention to the water temperature can not be too low, it is recommended to replenish water for the plant at noon.

After winter, to stop fertilization, to avoid pine roots are burned, you can just start winter, apply phosphorus and potassium fertilizer, promote the growth of plant branches, improve the probability of safe winter, wait until the end of winter, after the temperature rises, a small amount of fertilizer.