A method for cultivating large-diameter knotless larch-poplar mixed high-quality wood

By combining mixed planting of pine and broadleaf trees with scientific pruning techniques and the use of external growth regulators, the problem of backward technology in cultivating knot-free high-quality timber in Masson pine plantations has been solved, achieving efficient growth and improved ecological benefits of Masson pine, and producing high-quality knot-free timber.

CN118020555BActive Publication Date: 2026-06-16GUANGXI FORESTRY RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGXI FORESTRY RES INST
Filing Date
2024-02-07
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

At present, the technology for cultivating knot-free high-quality timber in Masson pine plantations is backward, resulting in many knots, poor trunk shape, and low timber quality. Furthermore, the ecological benefits of mixed forests have not been fully realized.

⚗Method used

By adopting a mixed planting method of pine and broadleaf trees, combined with the formula for the area of ​​Masson pine branch stump burial and the use of external growth agents, targeted pruning treatment is carried out. Through thinning methods such as cutting small trees and leaving large ones, cutting bent trees and leaving straight ones, cutting diseased and insect-infested trees, and cutting dense trees and leaving sparse ones, the forest density is adjusted to promote the growth of Masson pine and the formation of knot-free high-quality timber.

🎯Benefits of technology

It significantly improved the growth rate and timber quality of Masson pine, shortened the cultivation cycle of knot-free high-quality timber, enhanced the ecological and environmental benefits of forests, and increased the economic benefits per unit area.

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Abstract

The present application relates to the technical field of forest cultivation, and provides a large-diameter-grade knot-free fine timber cultivation method for pine-broadleaf mixed forest, which comprises the following steps: selecting a forestation site and then carrying out site preparation, planting pine seedlings and broadleaf tree species, pruning according to a pine branch stake embedding area formula, applying an external growth agent to the pruning mouth, thinning and adjusting the pine forest density, and harvesting the pine when it is matured. The pine and broadleaf tree species are planted and mixed at the same time, which can promote the growth of the pine, improve the soil environment, enhance the resistance to the outside world, and significantly improve the comprehensive benefits per unit area. In addition, after pruning and applying the external growth agent, the cultivation period of the knot-free pine fine timber is shorter.
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