How to distinguish the types of seedlings

Can be distinguished from the purpose.

1. Garden trees, including deciduous trees and evergreen trees, are the main ornamental trees, mainly used for landscape nodes, waters and open lawns. This kind of seedlings have the highest quality requirements, and the selection criteria are: specifications meet the design requirements, beautiful posture and full crown.

2. Skeleton trees can be divided into deciduous trees and evergreen trees, which are often used as trunk trees, street trees or background trees. This kind of tree requires higher quality and larger specifications, and the height is generally 5-8 meters. Selection criteria: the specifications meet the design requirements, the crown is full, the branches above the third level are reserved, the branches are evenly distributed and the crown is not biased.

3. Small trees and shrubs constitute the middle and lower layers of the flora, with a height of 2-5 meters, including flowering small trees and shrubs, colored small trees and shrubs, and evergreen small trees and shrubs. Through Da Qiao and ground cover plants, we can create landscape effects with diverse colors and rich seasonal changes. Selection criteria: the specifications meet the design requirements, the crown is full and the plants are robust.

4. Ground cover plants and lawn ground cover plants refer to the low plant groups that cover the ground, including biennial and perennial low herbs, ferns, and some low and creeping shrubs, bamboos and vines, the height of which is generally below 0.5m Lawn is to quickly cover the soil layer with perennial low plants to create grass rolls or grass blocks similar to carpet effect, which plays a role in protecting and beautifying the environment.

Extended data

The grade of seedlings is determined according to the quality of seedlings, and the quality standards of different tree species, different seedling ages of the same tree species and different regions of the same tree species are different.

According to the current national standards, seedlings are divided into three grades: first-class seedlings, second-class seedlings and equal-outer seedlings. Among them, first-class and second-class seedlings can be used for afforestation, while equal-outer seedlings cannot be used for afforestation and need to be cultivated or eliminated.

The specific quality standards are generally determined according to the height of seedlings, ground diameter, height-diameter ratio, number and length of lateral roots, and the intact rate of terminal buds of pine trees. The main afforestation tree species can refer to the relevant national standards, and the rest can refer to regional standards or be formulated by growers themselves.