Whitening the trunk with white coating can not only prevent cold but also prevent and treat pests. Lime and sulfur can prevent freezing, prevent sunburn, and prevent disease and kill insects. Salt helps lime penetrate the bark to keep moisture and prevent lime cracking and peeling. Adding glue can enhance the adhesion of the whitening agent. The white part of the painting should be high. All the branches that scrape off the old skin should be painted white to prevent dry tips.

The old trees and holes in Mushudong are prone to breeding pests, and they are also wintering sites for pests such as Ziziphus orientalis and Mythimna. It is possible to use 10 parts of mastic in winter and 3 pieces of broken husks. Add a little insecticide to block the tree holes with water and mud slurry. To seal off the overwhelming insects.

Cutworm worms and worms were combined with pruning in winter to cut off the larvae damaged by the larvae. For severely damaging branchlets, the overwintering insects on them can be removed with a wire brush, and the overwintering bugs of the yellow thorn moth must be carefully removed.

There is a layer of wax shell on the surface of turtle wax because it is difficult to kill it by general chemical pesticides. It can be sprayed with diesel emulsion to eliminate it. Before the jujube sprouts, the entire tree should be sprayed evenly and thoroughly with Baume 5 degree lime sulfur, which can control red spider, pear orchard and other pests.

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