Persimmon Sapling Overwintering Technology
1, frozen water
Before freezing of the soil, about the middle or late November, irrigation of one frozen water can increase the ability of the tree to resist cold and reduce the occurrence of drawing and freezing damage.
2, trunk white
Whitening agent commonly used formula: 30 parts of water, 9 parts of lime, 1.5 parts of lime sulfur stock solution, 1.5 parts of salt, 0.5 parts of animal and vegetable oil, 1 part of tree maintenance general.
3, buried method
(1) Ground-buried method: gently push the tree over and place it on the ground, bundle it with a straw rope, and directly cover the soil with a thickness of 40 cm.
(2) Underground soil burial method: dig trenches between the rows, the size of the trenches is the degree of overwhelming trees, and the main and lateral branches are bundled on the center trunk and placed in the trenches. The soil thickness is preferably 20 cm above the ground. The buried method is only suitable for saplings of 1 to 2 years old.
4, spraying protection agent
Spraying new high-fat membranes and general tree maintenance can form a protective film on the surface of the tree, reduce transpiration, and improve cold resistance. In mid-February and mid-March, each sprayed Kaowang No. 3, forcing the top of the nourishment to prevent back-drawing, which has a remarkable effect.
5, science winter shear
Cut off part of the autumn shoot during winter cutting can reduce the evaporation of water, improve the anti-freezing and drought-resistance ability of the shoots, and prevent the big green leafhoppers from spawning on the branches to avoid drawing. Trimming wounds should be promptly smeared with anti-corrosion film to protect the growth of wound healing tissue and prevent infection from the wound.
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