What are the tutorials and precautions for transplanting seedlings?

All planted seedlings should be selected as far as possible to meet the local ecological and climatic conditions.

Soil ball excavation standard

(1) When digging seedlings, the diameter of the soil ball should be 8- 10 times of the DBH of the seedlings, and its depth depends on the depth of the root disk of the seedlings.

(2) After digging the ball, wrap the ball with straw bag first, then tie it with straw rope, and then tie it horizontally; And then obliquely binding and cross-binding, and packaging the soil balls according to a 3-angle or 4-angle binding method. Finally, after the trunk is tied and fixed with rope, the seedlings can be dug down and taken out. After taking out, the bottom packaging of the soil ball should be based on not exposing the soil.

(3) The straight roots or thicker roots below the seedlings should be sawed with a hacksaw, and the incision should be neat and not torn, especially not hacked with a round shovel.

(4) After the seedlings land, the leaves and young branches of broad-leaved trees should be cut off, while conifers should not be cut off.

(5) Pruning branches should focus on maintaining the graceful posture of the tree, and keep thick branches to cut off bad branches. Branches other than lateral branches should make the crown easy to ventilate and light, and prevent pests and diseases.

Seedling planting standard

(1) As shown in the planting diagram, first plant large main seedlings, and then configure small trees and shrubs.

(2) The seedling materials should be buried vertically in the soil, and the planting depth should be 5- 10 cm below the planting hole line, which should not be too deep or too shallow, and the sinking degree of the new fill should be considered.

(3) When planting, the hole bottom should be loosened with a thickness of 10-20Cm, a certain amount of fertilizer mixed soil should be used when backfilling, and the surrounding soil should be buried by stages. At the same time, the roots should be fully compacted with 0/00 times solution of Bikagan plexus/KLOC-0, and attention should be paid to avoid damaging the roots and soil balls, and then the soil surface should be loosened with 1 layer to absorb water and air.

When transplanting

① Strict row direction, row spacing and plant spacing in the field.

Unified row direction, row spacing and plant spacing are actually effective measures to ensure uniform ventilation and illumination in the field, which can avoid various diseases caused by poor ventilation and uneven illumination.

② Make rational fertilization.

Improper fertilization during transplanting is easy to cause fertilizer to burn seedlings. Burning heavy fertilizer will directly lead to the death of seedlings after transplantation, while light fertilizer may also lead to "burning" roots, resulting in short-term or even late plant death.

③ Do a good job of sanitation during transplanting.

In the process of contact transplanting seedlings, relevant operators and tools must be fully disinfected, and smoking is strictly prohibited during transplanting.

(4) Select strong seedlings for transplanting, and practice weak seedlings again.

Selecting strong seedlings and transplanting will be completed, but it is very undesirable to discard the remaining relatively weak seedlings. On the one hand, the bought seedlings are wasted, on the other hand, the number of transplanted plants cannot be guaranteed. Weak seedlings can reach the standard of high-quality seedlings if they continue to be tempered in the seedling hardening pool for one or two days, and all seedlings should be transplanted.

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After transplanting is completed, the field should be inspected regularly to check whether there are pre-related symptoms of pests and diseases. If there are early symptoms, we should adhere to the concepts of "prevention first, combination of prevention and treatment" and "green ecology and high quality" and treat them early. If we can use biological, physical and green means, we should use less chemical means to detect and treat field pests and diseases as early as possible.