How to plant saplings in summer? Improve the survival rate?

In the process of garden construction, we still often encounter the problem of tree transplanting in summer, because the high temperature causes large transpiration of branches and leaves, which affects the survival of trees. Therefore, in order to improve the survival rate of summer seedlings, it is necessary to take some necessary measures.

I. the choice of planting seedlings

As summer is a non-planting season, with high temperature and large evaporation, it is easy to cause plant dehydration, and the requirements for planting plants themselves are even higher. in material selection, seedlings with developed roots, strong growth and no diseases and insect pests should be selected as far as possible.

Under the condition that the specification and shape meet the design requirements, the following principles should be followed: first, select small seedlings as far as possible, the rooting ability of small seedlings is stronger than that of large seedlings, and the survival rate of transplanting is higher. Second, it is best to use false planting seedlings, false planting time short seedlings, root activity is more exuberant; if there is no false planting seedlings should choose nearly 2 years of transplanting seedlings, such seedlings have more roots, soil balls are not easy to break, strong water absorption capacity, the survival rate of seedlings is higher. In addition, we should also pay attention to the measures of root cutting and transplanting in advance.

Second, the treatment of planting soil and digging holes

The summer planting soil must be thick enough to ensure that the soil is fertile and loose, good air permeability and good drainage performance. For plots with harmful substances such as construction waste, it is necessary to remove the waste soil, replace it with good soil suitable for plant growth, and apply rotten organic fertilizer as base fertilizer. When planting seedlings in summer, the size of the planting hole must meet the standard requirements.

III. Seedling emergence and transportation

Seedling raising and transportation are the key links to ensure the survival of planting, and the control of soil ball quality and intermediate transport speed is very important. The starting and transportation of seedlings should pay attention to weather changes, generally choose to start seedlings on cloudy days, transport them to the scene overnight, and ensure that the branches and leaves of seedlings are fresh and the soil balls are complete and dense.

Increase the size of the soil ball during seedling emergence.

The diameter of soil ball is generally 1.2 to 1.5 times that of transplanting in normal season. The larger the soil ball is, the more complete the root system is, and the easier it is to survive. Seedling transplantation as far as possible to avoid high temperature and dry weather, seedling emergence is best arranged in the morning or after 4: 00 p. M., in order to reduce seedling water loss. Anti-transpiration agent can be sprayed on the crown before the seedling, and transported immediately after the seedling is raised. If the soil is loose and not easy to ball, the root can be dipped in mud immediately after seedling emergence to keep the root moist.

Small flowering shrubs can be potted in spring

Such as Populus tomentosa, Sabina vulgaris, Ligustrum lucidum, Berberis, brocade belt, rose, etc., can be planted in the 20~30cm black basin, the basin matrix with the original bed soil to add appropriate amount of fertilizer for normal fertilizer and water conservation. When you need to transplant, remove the flowerpot directly and implant it into the hole. The soil balls of the seedlings are not scattered, and the survival rate can reach 100%.

Timely planting

After the seedlings are transported to the construction site, organize manpower and mechanical unloading in time; pay attention to protection when unloading, do not damage trees and soil balls; after unloading in sunny days, closely discharge seedlings neatly, and cover soil balls with sunshade nets in time to avoid direct sunlight. When it cannot be planted on that day, fake planting or water spraying should be carried out to keep the soil ball moist. The exposure time of bare-root seedlings from the beginning of seedlings should not exceed 8 hours and must be finished on the same day. When planting, the large flower shrub wood hole can be mixed with rooting powder and a certain amount of phosphorus-based compound fertilizer, fill to about 70%, and then fill to level with the ground; and build an irrigated soil bank with a height of 10 ~ 375px and pour through water.