There is a piece of white under the trunk I stick my index finger on it, smell it, then pinch it with my thumb, and finally put it in my mouth to taste. I'm sure it's bird droppings Looking back on my previous education, food practice is the only criterion for testing bird droppings. I am happy to learn and use it.
The roots of big trees are super developed. Many of them partially protrude from the surface.
Elm: also known as spring elm and white elm. , known as the "elm bush", is a deciduous tree of elm. The bark of young trees is smooth, grayish brown or light gray, and the bark of big trees is dark gray, irregular and rough. Branchlets glabrous or hairy, without swollen cork layer and raised cork wings; Winter buds are nearly spherical or ovoid.
Leaves are oval, oval, etc. The leaves are smooth and hairless, the back of the leaves is pubescent when they are young, then they become hairless or some veins have tufted hairs, and the petiole surface is pubescent. The leaves of flowers bloom first and cluster in the axils of branches. Samara sparsely obovate, rounded.
Positive tree species are light-loving, drought-tolerant, cold-tolerant, barren-tolerant and adaptable. Developed root system, strong wind resistance and soil conservation. Strong germination and pruning resistance.
Fast growth and long life. Resistant to dry and cold climate and moderate salinity, but not to water and humidity, resistant to waterlogging in rainy season. It has anti-pollution and strong dust retention ability for leaves.