Is Nata oak evergreen or deciduous trees?

Nata oak is a deciduous tree with an erect trunk, spreading branches and a tower-shaped crown. It is 30 meters high, 0.3-0.9 meters in diameter and 12 meters in width. It usually turns red at the beginning of November and leaves fall in February of the following year.

First, what are the difficulties in planting Nata oak on a large scale?

1. Limitation of source

There are great technical difficulties in oak cutting propagation, which are currently propagated through seeds, which need to be imported from the United States. Americans usually count the number of seeds picked that year in September, while the Chinese often do not plan to buy seeds for the coming year until the end of the year. As a result of this time lag, when the Chinese want more seeds, the mountains in the United States as far away as the Western Hemisphere have been covered with snow and there is no way to pick them.

two。 Lack of stock

Compared with beech, camphor and other tree species commonly used in landscaping, the storage of Nata oak is far less than that of oak. At present, the planting area of Nata oak is about 10-20 million mu. However, the large-size boutique Nata oak is almost blank. At present, it is difficult for Nata oak with a DBH of more than 15 on the market to purchase 1000 plants in bulk. If you want to cultivate high-quality Nata oak, you can only plant 40 trees per mu, and the existing planting area is far from enough.

Second, what are the advantages of planting Nata oak?

1. Price advantage

In recent years, the price of Nata oak seedlings has declined, but the price of engineering seedlings is still strong. The price of a 15cm Nata oak is about 6000 yuan, which can only be compared with other conventional tree species. And Nata oak's growth rate is very fast, can reach 2-3 centimeters a year, the benefit is extremely high.

two。 The Institute of Forestry, Chinese Academy of Forestry Sciences began to introduce Nata oak in 1997. After more than 20 years of experiments, it has been proved that Nata oak is indeed an excellent tree species for afforestation. Not only the tree shape is tall, the crown is symmetrical, the branches and leaves are dense, the leaf shape is beautiful, the color is colorful, the red leaf period is long, can change the single forest phase. At the same time, it also has the functions of purifying air and anti-pollution. In addition, its fruit can also provide winter food for small animals in the forest, make up for the lack of ecological chain, and turn the dead forest into a living forest.

3. economic performance

Nata oak has high economic value. Its wood is hard, fine-grained and expensive. It is an important raw material for the production of flooring and furniture. Even if it is used in wood production, the benefit of Nata oak is considerable.