Why do you brush a layer of lime powder under the trunk of the tree in winter?
Lime has certain bactericidal and insecticidal functions, and can kill some overwintering fungi, bacteria and pests that are parasitic on the trunk of trees.
The trunk is often painted white, look far, neat and beautiful. However, it was painted white, mainly do not care about this white thing is nice. People add 20 pounds to 40 pounds of lime into lime water in 100 pounds of water. The whitewashed trees have water, so several advantages: first, lime has a certain kill...
In winter, the temperature is very low in the night. During the day, when the sun is shining, the temperature rises, and the trunk is dark brown, which is easy to absorb heat, and the temperature of the tree trunk rises rapidly. Such a hot and cold, so that the trunk easily donglie. Especially big trees, trunks thick, dark color, and the toughness of the organization is relatively poor, easier to crack. With lime water, the lime is white, can make 40% - 70% sunlight reflected off the trunk, so little difference in temperature between day and night, is not easy to open. In agriculture, lime is often mixed with other things to make use of pesticides. The famous "pesticide Bordeaux" is made of lime and copper sulfate mixture. Bordeaux is the main chemical composition of copper sulfate, is a pesticide has strong sterilization ability.
