The latest course of cold protection techniques and methods for walnut trees in winter

Walnut is very suitable for planting in the north, but most walnut trees are difficult to survive in winter because of their high moisture content and poor cold resistance. Freeze-damaged young walnut trees, light will affect the coming annual yield, heavy will cause the death of the whole plant, so how to protect walnuts from cold in winter? Come and have a look with the editor.

1. Tree trunk whitening

Friends living in the north must be no stranger to white trunks, whether they are their own fruit trees and roadside ornamental trees, they all need to be painted white before winter, which can play an excellent role in preventing cold. Similarly, white painting also has a certain effect on the cold protection of young walnut trees. Whitening is, generally choose to use 0.5 kg of salt, 6 kg of quicklime, 15 kg of water, after adding an appropriate amount of adhesive and insecticide to stir evenly, smear tree trunks and branches.

2. Apply plant antifreeze

Plant antifreeze can significantly improve the freezing resistance of plants, avoid plant freezing damage, and even restore the frost-damaged parts of plants and make them return to normal. The main component of antifreeze is polyvinyl alcohol. First boil the water to 50 degrees, then add 1/20 polyvinyl alcohol, stir until all boils, then simmer for 20 minutes, wait for it to cool naturally, and finally add insecticidal, germicidal agents and adhesives to use.

3. Irrigation frozen water

Frozen water is generally irrigated from the defoliation of the plant to the soil before freezing, which can form a permafrost layer near the tree root when the soil is frozen, and maintain the relative stability of the root temperature to prevent the plant from freezing.

4. Cultivate soil to prevent frost

The cold resistance of young walnut trees is poor, so it can be irrigated with frozen water, and then cultivate soil at the root neck. The best diameter and height are kept between 30 cm and 50 cm. This can not only reduce water loss, but also prevent low temperature freezing injury to the root neck of young trees, but also add appropriate amount of pesticides to prevent the reproduction of overwintering pests.

The above is the introduction of cold protection technology of walnut trees in winter. I hope it can help you. If you want to know more about it, please follow us.