The white paint brush on the tree is generally limestone, not paint. The ingredients are relatively simple, not very complex. You can mix 10 parts of quicklime, 2 parts of stone sulfur mixture, 2 parts of edible salt and 2 parts of clay, and then add water to it, so that mixing can be made into work. When you brush the trees, you'd better brush twice, which will have a good effect. The effect of one time is not very obvious. The first time is after the fallen leaves of fruit trees, and the second time is in early spring.
1. Insecticidal: the substances in lime can play a role in killing insects, and can kill fungi and pests in bark. Not only can kill insects, but also can prevent insects, because insects like to grow in black places, if painted white, can reduce the possibility of pests.
2. Heat preservation: it's very cold in winter night. Brush these on the tree body to keep it warm. And the temperature of the day will rise, if a cold and a hot easy to make the tree dry, brush this can also play this role
3. Reminder: brush white things on the tree, which will reflect light under the sunshine, and can remind pedestrians.
