Cleaning, shaping, disinfection, painting and filling.

First, the tree hole cleaning

Protect the barrier protection system and carefully remove rotten and insect-eaten xylem.

Second, the shaping of tree holes.

Internal plastic surgery: eliminate water bag to prevent water accumulation.

Third, the tree hole reinforcement

1. Bolt reinforcement:

Precautions: the drilling position should be at least 5 cm away from the healthy cortex and cambium of the wound; The washer and nut must completely enter the countersink, and the depth should be enough to cover the surface of the formed healing tissue; All drilling holes should be disinfected and covered with tree paint.

2. Screw reinforcement

Note: For long tree holes, bolts or screws should be installed on the intact wooden parts at the upper and lower ends for reinforcement.

Fourth, disinfection and painting.

Disinfection: Apply creosote or 3% copper sulfate solution to all xylem on the inner surface of the tree hole.

Painting: After disinfection, all exposed xylem and cortex coated with lac paint should be painted.

Verb (abbreviation of verb) filling in tree holes

Methods of covering and filling tree holes

1. Hole coverage

Cover the hole with a metal or new material plate.

The surface of the cover is waterproof and can be decorated properly.

2. Tree hole filling

Large and deep tree holes that are easy to accumulate water and water, as well as tree holes near bifurcation positions or ground wires, should be filled.

In order to fix the filler better, wooden strips coated with creosote or asphalt can be nailed evenly on the inner wall longitudinally.

If filled with cement, there must be drainage and drainage measures.

Tree hole filling filler:

Cement mortar: 2 parts of clean sand or 3 parts of gravel and 1 part of cement, add enough water and stir.

Asphalt mixture: heat and melt 1 part of asphalt, add 3-4 parts of dry hard wood chips, fine shavings or wood chips, and stir while adding materials to make it into a paste-like granular mixture.

Polyurethane plastics:

Other fillers: including wood blocks, wood bricks, cork, rubber bricks, etc.

Quality requirements for tree hole filling:

Packing should be completely compacted and tightly packed, leaving no gaps.

The outer surface of the filler is not higher than the stratum.

Check regularly.