Answer: Buried method. On the ground, the method of burying the earth is to gently push the tree down and place it on the ground in parallel, bundle it with a straw rope, and directly cover the soil with a suitable thickness of 40 centimeters. Under the ground method, dig trenches between the rows, and the size of the trench The overwhelming tree is degree, and the main and lateral branches are bundled on the center trunk and placed in the trench to cover the earth. The thickness of the soil is 20 cm above the ground. Buried method is only suitable for 1-2 years old saplings. The trunk is white. 30 parts of water, 9 parts of quicklime, 1.5 parts of lime sulfur stock solution, 1.5 parts of salt, 0.5 parts of animal and vegetable oil, and 1 part of tree maintenance general were used as the whitening agent to brush the trunk. In addition, the freezing water should be poured 1 time before and after the freezing of the soil in about the middle or late November. This will increase the ability of the tree to resist cold and reduce the occurrence of bolting and freezing damage.
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