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Detailed Explanation of the Top-Bud Cleft Grafting Technique for Korean Pine
Korean pine (Pinus koraiensis Sieb. et Zucc.) is a tall tree of the genus Pinus in the family Pinaceae, with a full and straight trunk. In natural Korean pine forests, the average tree height can reach 25-30 m, the diameter at breast height can reach 40-80 cm, and the lifespan can reach 300-400 years. In places with suitable growing conditions, the tree height can reach 40 m, the diameter at breast height can reach 200 cm, and the lifespan can reach about 500 years; its timber is excellent, with straight grain, strong compressive strength, rich in resin, strong decay resistance, and high craft value.