Why is the trunk white lime brushed only one meter? 5

One meter is enough.

The big trees on the side of the road are painted with white lime, not white paint, for the following reasons:

1. Lime has a certain bactericidal and insecticidal effect, which can kill some overwintering fungi, bacteria and pests parasitic on the trunk. In winter, some pests on the trees will burrow into the ground for the winter, and in the fall, they will not be able to come down after being brushed with lime, and they will freeze to death in winter. Brush it again in the spring of the next year, and it will not be easy for the insects that hibernate underground to climb the tree to cause harm.

Because lime can dehydrate the bugs and die, they will all stay away. But flying pests are useless.

2. In winter, the temperature is very low at night; During the day, the temperature rises when exposed to sunlight, and the trunk is black-brown and easily absorbs heat, and the temperature of the trunk rises rapidly. In this way, the trunk is easy to freeze and crack. Especially large trees, the trunk is thick, the color is dark, and the tissue toughness is relatively poor, so it is more likely to crack.

Coated with lime water.

Finally, because the lime is white, it can reflect 40 70 sunlight, so the temperature of the trunk is not much different during the day and night, and it is not easy to crack.

Whitening the trunk has a great effect, in addition to being beautiful, it can also prevent insects and frost. In the past, white lime was often used for whitewashing, and now it is used to coat the trunk with environmentally friendly whitening agent, and the happy forest is good, and the insecticidal and sterilization effect is better than lime. Under normal circumstances, trees on the side of the road are brushed about one meter, but not all are brushed one meter, like fruit trees, many people like to paint the whole tree white in winter, and the insect control effect is better.

Hello, very high and rough to serve you, for you to make the following slag answer: if the trunk of the white ash height is too high, it may cause the trunk to freeze, causing the trunk to break, leaves to fall, and even death. Reason:

1.If the white ash coating on the trunk is too thick, it will reduce the temperature of the trunk surface and make the trunk freeze, which will lead to breakage, leaf litter, death, etc. 2.

If the white ash coating on the trunk is too thick, it will reduce the temperature of the surface of the trunk, causing the trunk to freeze, which will lead to cracks in the trunk. Workaround:1

Choose the right coating: Choose a paint with good thermal conductivity, such as aluminum silicate coating, which can increase the temperature of the trunk surface and thus avoid freeze damage. 2.

Reasonable control of coating thickness: the coating thickness on the trunk should not be too thick, generally not more than 3mm, so as not to reduce the temperature of the trunk surface and make the trunk frozen. 3.

Apply antifreeze appropriately: You can apply an appropriate amount of antifreeze to the trunk to increase the cold resistance of the trunk. 4.

Adequate fertilization: Timely fertilization can be applied to make the growth of the trunk more robust, thereby enhancing the frost resistance of the trunk. Personal Tips:

When the trunk is white-ashed, it is necessary to choose a coating with good thermal conductivity, control the thickness of the coating, apply antifreeze appropriately, and apply fertilizer in time, which can effectively prevent the trunk from freezing, so as to protect the healthy growth of the trunk.