Why are tree trunks often painted white?

Insect repellent. Antifreeze. For deciduous trees:

White, which increases the reflection of sunlight and thus delays the date of high temperature in the root neck, so that the date of germination is delayed, and in the spring, once it encounters the spring cold, the shoots will not be frostbitten. Global warming, there is no need to prevent freezing; Tubai is mainly for the leaders to see.

The white is lime water, which can prevent moths.

The reasons why the trunk is often painted white are as follows:

1. Kill germs and prevent germ infection: quicklime and salt in the whitening agent have the effect of sterilization and disinfection, which can eliminate all kinds of germs at the base of the trunk, and can also protect the wounds of fruit trees after whitening.

2. Insecticide and insect control: the lime and sulfur in the whitening agent have a certain killing effect on fruit tree pests, because pests generally like to hide in dark places, and the trunk will also play a good role in avoiding pests after being whitened.

3. Anti-frost damage and sunburn: The temperature is low at night in winter, and during the day, the temperature rises when exposed to sunlight, and the trunk is black-brown, which is easy to absorb heat, and the temperature of the trunk also rises quickly. In this way, the trunk is easy to freeze and crack.

4. Prevent animal bites: After the trunk is painted white, it can also prevent livestock from gnawing the bark.

Precautions for whitening the trunk

Stir the paste well before applying. Apply evenly and avoid too thick. Whiten the area:

The height of whitening is meters from the ground, focusing on the root neck of the trunk of the white, and the south side of the trunk should be whitened for large trees, diseased trees, and trunks with incomplete crowns. Ordinary branches and current branches should not be painted white, so as not to burn the cortex. Paint the trunk of the tree, and the ground diameter should not be left blank.

Duration of application of whitening agent

The best time to dry is before winter; after the spring thaw; After the planting of newly planted trees (prevention of rot, canker, sunburn in spring and summer; prevention of frost damage in autumn and winter); Choose a sunny day when applying dry, and the temperature is above 0.

The trunk is often painted white to keep it warm and insect repellent. The white stuff is lime water made from quicklime, which has a certain bactericidal effect and can also slow down the rate of heat absorption. In addition to whitening the trees, you can also wrap the trees with thick rope to keep them warm, or you can cover the bottom of the trunk with plastic film or straw mats to keep them warm.

The trunk is often painted white because it keeps the trunk warm and insect repellent in winter. The white thing is the lime water made by people adding 20 to 40 catties of quicklime to 100 catties of water, and the lime water has a certain bactericidal effect, which will kill the overwintering fungi and pests that parasitize on the trunk.

Lime water also keeps the trunk warm, and in winter the night temperature is very low, and during the day the trunk is exposed to the sun, and the trunk is dark brown and absorbs a lot of heat. If the temperature changes too much in a short period of time, it will lead to the freezing and cracking of the tree trunk, which will make it more difficult to maintain and manage the tree trunk in the future.

In winter, in addition to whitening the trees, you can also wrap the trees dry. Thicker ropes can be used to wrap the roots of the trunk in a tight nut, which also keeps the trunk warm for the winter, and also prevents the trunk from directly absorbing heat and causing the bark to crack.

In addition to wrapping the trunk, you can also cover the bottom of the trunk with plastic film or cover the bottom of the trunk with a straw mat. This is effective in keeping the roots of the tree warm, but it can still cause cracks in the bark of the tree.

There are two main purposes: on the one hand, to prevent cold winters, and on the other hand, to prevent pests and diseases.

After the plant is whitewashed, the white color can reflect the sunlight and various radiation during the day, avoid the temperature in the plant from being too high, greatly weaken the temperature difference between day and night, and avoid the plant from being damaged by sudden temperature change.

In addition, in the late autumn and early winter, many insects like to lay eggs in the cracks of old tree bark for the winter, and the whitening agent has a killing effect on many pests.

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Ask why tree trunks are often painted white.

Hello, there are the following reasons for brushing white: it has the effect of killing germs and insects, and the white coating can also effectively reflect sunlight, alleviate the impact of the temperature difference between day and night on trees, prevent cracking, and can play a role in protecting trees.