Pinus bungeana is a light-loving tree species, which is barren and cold-resistant, and has strong adaptability in dry and cold climate. Generally, it grows in the soil formed by mountain limestone at an altitude of 500- 1000 meters, but it can also grow on acidic rocky mountains or loess with cool climate. For the dry and cold climate of -30℃, the soil with PH value of 7.5-8 can still adapt. It grows well on calcareous soil and loess with cool climate, deep soil layer, fertile and moist. It grows in fertile, sunny, warm and well-drained places.

Pinus bungeana wood is easy to process, with flat texture, light and soft quality, shiny and patterned after processing, and strong corrosion resistance. It is usually used in building and manufacturing furniture and stationery. Seeds can be eaten or pressed for oil. Pinecone can be used as medicine to eliminate phlegm, relieve cough and asthma, and is mainly used to treat chronic tracheitis, asthma and cough. ?

Seedling raising techniques of Pinus bungeana

1. container seedling raising: container seedling raising has the advantages of saving nursery land and seeds, short seedling raising period, good seedling quality, high survival rate, quick seedling delay and convenient intensive management. The nursery place should be in the leeward and sunny place with flat terrain and sufficient water. Degradable plastic film is more suitable for containers.

1, the preparation of nutrient soil needs a nutrient-rich substrate with good porosity, ventilation, heat preservation and moisture retention. Choose to use according to local conditions.

2. When the container is filled with soil, the water content of nutrient soil should be 10% ~ 15%, and the filler should be compacted, placed neatly and sprayed once.

3. Select high-quality seeds for sowing, and sterilize and accelerate germination before sowing. Generally, there are 2 ~ 3 seeds in each container. When sowing, lightly press the seeds and soil, and then evenly cover the soil by 0.5 ~ 1.0 cm.

4. It is not suitable for watering at the early stage of emergence, and it should be watered several times in the future, and it should be kept moist during the fast-growing period.

2. Cutting seedling: collect annual branches from cuttings, the cutting length is 15 ~ 20 cm, and the cutting mouth is required to be smooth. The density of cuttings is 10CN× 10CM, and the depth is 1/2 ~ 2/3 of cuttings, then watering. The best cutting time is 1, February and March, and the rooting period of Pinus bungeana cutting is long, which needs careful management and shade, and the humidity is about 80%.

Planting density: Pinus bungeana grows slowly, and the initial density is higher, about 330 plants per mu. The spacing between plants in courtyard greening is 4M×5M, and the spacing between street trees is 4 ~ 5m. Planting seedlings, choose seedlings with intact terminal buds for more than 3 years, and plant them with the seeds. Pinus bungeana seedlings should pay attention to loosening soil and weeding to keep the soil loose. Water in time in case of drought, but Pinus bungeana is afraid of waterlogging, so it is necessary to control the amount of water. And do a good job in pest control in time.