What is the function of walnut tree?

Walnut has beautiful tree shape, huge crown, dense branches and leaves, green shade covering the ground, and good shading effect in the courtyard. It is an excellent tree species combined with garden production and should be used as shade trees and street trees. It can be planted singly or in clumps in scenic spots, parks, courtyards, lawns and crevices of gardens, in front of houses and behind houses, under slopes in front of courtyards, at the foot of hillsides, on both sides of valleys and pastoral areas as economic forests and shelter forests, or as scenic spots and convalescent areas in artificial sanatoriums. The volatile smell of flowers, fruits and leaves has the function of sterilization and health care. It can also be planted as a street tree with thick leaves and excellent shading effect, but if it is a street tree, it is necessary to choose a variety with good dry shape. Walnut is one of the four major woody oil-bearing trees in China.

Walnut is rich in vitamins, protein and fat, and its oil content can reach 60% ~ 70%. It is a nourishing and strong food with rich nutrition. It can be eaten raw or made into cakes and sweets, and walnut oil can be used as high-grade food and industrial oil. Excellent wood material, purplish brown heartwood, reddish brown sapwood, smooth wound surface, beautiful texture, no cracking, tenacity, compactness, elasticity and impact resistance.

It is an excellent material for national defense industry, military industry, sports and aviation, as well as furniture, buildings and bridges. Bark, leaves and pericarp are rich in tannin, which can be used to extract tannic acid, and the shell can be used to make activated carbon.