Tea tree post-frozen management technical measures
After the tea tree has suffered freezing damage, it must actively take effective measures in accordance with the degree of damage, and quickly restore its tree vigor to facilitate the resumption of production as soon as possible.
1, actively protect the leaves. Victim-tolerant trees tend to shed a lot of fallen leaves or leaf curling after freezing. After the temperature rises, they apply foliar topdressing 0.3% to 0.5% urea and spray 2 or 3 times in succession to remove the unrecoverable leaves in time.
2, timely pruning, cut dry. Before germination, pruning is performed in time according to the degree of damage of the tree body to promote new shoots and restore the tree vigor.
3. Strengthen soil management and enhance root absorption. After the temperature rises in the spring, it is necessary to promptly open up the rammed soil; pay attention to trench drainage, timely cultivating and weeding, improve soil permeability, and increase soil temperature to promote root activity.
4, increase fertilizer material. After the tree is frozen, it will lose a lot of nutrients and weaken the tree vigor. In order to restore the tree vigor as soon as possible, nitrogen fertilizer must be added to supplement the nutrients. Soil fertilization can be applied thinly, while spraying 0.5% urea plus 0.2% potassium dihydrogen phosphate for extra-root dressing can have a significant effect on restoring tree vigor.
5, prevention and control of pests and diseases. After the freeze, the tree vigor is weak and the wounds are increased. The resistance to pests and diseases is relatively weakened, and various pests and diseases are prone to occur. Therefore, timely removal of dead branches, frostbite, pest control, in order to maintain a robust tree.
Note: When spraying foliar dressings, select high daytime temperatures (9:00 am – 2:00 pm).
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