The tree trunks grow straight and unobtrusive, which can increase the output rate and use value of timber species and increase the economic benefits of tree planting households. Here are some simple measures that can be used to straighten out the wood, make it full, and have no knots.
First, choose quality trees. When planting, should choose 2 to 3 years old, dry-shaped tall, full of top buds, dry and strong ability of the excellent tree species, and try to choose large seedlings and strong seedlings.
Second, the pruning of science. After the planting and survival, from the second year onwards, proper pruning should be carried out from the bottom to the top according to the growing trend of the trees. Trimming of branches, competition branches, diseased branches and dead branches should be promptly carried out. The thick branches that really need to be repaired should be short-cut first, and then removed from the base after the trunk grows thick in the second year. When pruning, try to make the cut at the pruning section smooth, and the width of the wound plane does not exceed 1/4 of the plane around the same part of the trunk. Maintain a reasonable dry-to-height ratio, that is, the height of the trees does not exceed 1/3 of the height of the tree. During the pruning, disinfection and protection measures should be taken to prevent the pests and diseases from infecting. Commonly used methods of wound disinfection include: smearing the wound with 5 to 10 Baume degrees of lime sulfur; 16 parts of cow dung, 8 parts of hydrated lime, 8 parts of plant ash, and 1 part of fine river sand. Add water to make a paste and apply the wound; 1% ~ 2% of copper sulfate solution, etc. for disinfection protection.
Third, make curved trees straight. For the timber trunk that is affected by the external conditions and the cow is bent, it can use the knife to draw 3 to 5 vertical cuts up to the xylem inside the curved part of the trunk to stimulate the tree to heal the wound and accelerate the growth of the recess. If the year does not reach the desired standard, it can be continued until it grows straight.
Fourth, cure trunk damage. No matter what the cause of the trunk wounds should be promptly protected and treated to prevent expansion and promote healing. 1 The local scars that cause the bark to fall off or fall off due to mechanical operation damage can be cured in a timely manner by patching and binding. When the tree bark is detached due to mechanical damage, just pick up the bark in time, gently wipe off the debris inside the bark, stick to the trunk according to the original part, and wrap it with plastic film or wet straw, and use a rope. Tighten, under normal circumstances can be healed within the next month; if the bark crack did not fall off, first hand tightly pressed, so that the bark of the stem and the trunk closely connected, and then tied with a rope, can be healed within a week. 2 Treatment of wounds. First, the tissue around the wound was shaved and flattened with a knife to make the edge of the skin smooth and tidy, and then it was sterilized with a Bordeaux mixture or lime sulfur stock solution. To promote wound healing, apply 0.01% to 0.1% alpha-naphthylacetate ointment.
Fifth, science fills the tree hole. First remove the decayed wood inside the hole and the hole, disinfect it with chemicals, then add water and cement gravel to reconcile and fill the cave.
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