Seedling planting quality requirements

The quality of seedlings directly affects the effect of greening and beautification, so the quality of seedlings should meet the requirements of nursery quality standards and seedling quality design. The specific requirements are as follows:

1, tree quality standard: the trunk should be straight without obvious bending, with no more than two small bends, without dry pests and unhealed mechanical damage. The height of branch point is 2.5-2.8m, the crown is full, the branches are evenly distributed, there are no serious pests and diseases, and the color of evergreen leaves is normal. Developed root system, no serious pests. When transplanting, the size of root system or soil ball should be 8- 10 times that of seedling DBH.

2. Shrub quality standard: the root system is developed, the growth is robust, there is no serious pest, the shrub is symmetrical, the branch distribution is reasonable, the height should not be less than 1.5m, the clustered shrub should have at least 4-5 branches, and the trunk of the shrub with trunk should be obvious.

3. Quality standard of hedge seedlings: the height of coniferous evergreen seedlings shall not be less than 1.2m, and the height of broad-leaved evergreen seedlings shall not be less than 50cm. The seedlings should be full, with dense branches and leaves, normal development, developed roots and no serious pests and diseases.

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