Function and principle of tree whitening

The function and principle of tree whitening are as follows:

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1, sterilize, prevent bacterial infection and accelerate wound healing.

2, insecticidal, insect-proof. Kill dry insects in overwintering eggs and bark. Because pests generally prefer black and dirty places to white and clean places. When the trunk is coated with snow-white limewater, the pests in the soil will not dare to climb up the tree along the trunk to make trouble, and the bark will be prevented from being bitten by animals.

3. Prevent freezing injury and sunburn, and avoid freezing injury in early spring. In winter, the temperature is very low at night; During the day, due to sunlight, the temperature rises, the trunk is dark brown, which is easy to absorb heat, and the temperature of the trunk also rises rapidly.

This makes the trunk easy to freeze and crack. Especially for big trees, the trunk is thick, the color is dark, the tissue toughness is poor, and it is easier to crack. After limewater is applied, because lime is white, it can reflect 40%-70% of sunlight, so the temperature of the trunk has little difference between day and night, and it is not easy to crack. Postpone the germination and flowering period of fruit trees to prevent freezing injury in early spring.

It is convenient to walk at night. When trees are painted white, they will reflect light. Pedestrians at night can see the road more clearly and beautify it, giving people a very neat feeling.

Albino tree species

In view of the occurrence of pests and diseases, the evergreen trees in Sophora japonica, Elm, Lagerstroemia indica, Albizia Albizia, Populus, Luan, Willow, Cherry Blossom and Rosaceae, some trees harmed by scale insects, Cerambycidae and aphids, and trees susceptible to freezing injury, such as Du Ying and Michelia, can be painted with emphasis, while other trees less harmed by pests and diseases, such as Metasequoia glyptostroboides, can be painted with emphasis.

Whitening material

Quicklime, water, salt, adhesive (such as clay, grease, etc. ), sulfur mixture stock solution, in which quicklime and sulfur have bactericidal and insect-proof functions, salt and adhesive can prolong the action time, and a small amount of targeted pesticides can also be added.

First, dissolve the quicklime with water, filter off the residue, pour in the melted salt, and finally add the lime-sulfur mixture, adhesive, etc. And stir evenly. Whitening liquid should be used together and not stored for too long.