How to sell poplars?

According to the algorithm of cylinder, the volume of cylinder = bottom area × height, bottom area (area of circle) = π× radius, perimeter ÷ 3 (3. 14) ÷ 2 = radius, and the cross-sectional area of tree is equal to 3. 14× radius × radius, and then× height.

The industrial utilization of poplar mainly includes: large-diameter poplar is mainly used to produce plywood, laminated veneer lumber and furniture; Small-diameter poplar is used to produce fiberboard, particleboard, paper making and matches.

Generally, planting with large plant spacing is adopted, but in developing countries, close planting is mainly implemented, with short rotation period, and medium-diameter timber is produced for civilian use. There are some transitional types between the two.

Extended data:

Be distributed

Populus davidiana is produced in Liaoning, North China, Northwest China, Sichuan and other provinces. Born in valleys, river banks and shady foothills at an altitude of 800-3000 meters. Sexual preference for humid or dry and cold climate is a common tree species in northern China.

Populus davidiana is produced in Sichuan, Yunnan, Gansu and Shaanxi, mostly at the altitude of 1 100-4600 meters, and is often mixed with spruce or sometimes forms a massive pure forest. Populus yunnanensis is produced in Yunnan, Guizhou and Sichuan, and is born in the mountainous area with an altitude of 1300-2700 meters.

Populus nigra is produced in Xinjiang, China (Irtysh River and Ulungu River basins). There is also a small amount of introduction in northern China. It is distributed in south-central Soviet Union (Central Asia, Caucasus), parts of West Asia (Afghanistan, Iran), Balkans, Europe and other regions. Populus deltoides naturally grows in river banks and river bends, and there are few sand dunes along the coast.