Maple leaves are very ornamental. There are four most famous scenic spots in China, also known as the four major scenic spots in China. They are Xiangshan in Beijing, Tianping Mountain in Suzhou, Qixia Mountain in Nanjing and Yuelu Mountain in Changsha, Hunan.

The degree to which maple leaves turn red is related to time, drought, pollution, especially nitrogen deficiency. The red maple leaves are actually the result of maple trees responding to natural pressure. The red reaction actually acts as a sunscreen. It makes the maple leaf stay on the tree for a longer time and makes the tree absorb more nutrients.

Extended data:

cultivation techniques

Planting hole: the planting hole depends on the size of the maple mound, and the hole diameter is greater than 20% of the diameter of the mound.

Pruning clods and tree crowns: Before planting, properly prune clods, prune damaged branches and over-dense branches, and trim tree crowns and shapes.

Planting method: put the tree in the center of the planting hole, straighten the tree, make the planting hole face the same as the crown, fill the soil evenly, and tamp it in layers.

Irrigation: water in time after planting, and then cover the soil to keep it moist.

Infusion: Infusion is needed after big seedlings are planted. From the active growth of trees to the stop growth of trees, it depends on the specific situation of trees. At the base of the trunk, at an angle of 45 degrees from top to bottom, holes are drilled into the pith evenly and alternately, and the number depends on the tree body, generally 3-5.

Hang the infusion bottle above the infusion hole, insert the needle into the infusion hole, straighten the infusion tube, and turn on the infusion switch to make the liquid flow into the tree at a uniform speed. The continuous infusion time of the same infusion hole should be controlled below 15 d, and the infusion hole should be blocked with a cotton plug after infusion.