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湿地松(Pinus elliottii Engelm.Var.clliottii)不仅是优良的工业用材树种,而且是松属树种中松脂产量最高、质量最好的树种之一。其采脂收益一直在林分总收益中占重要比重。 从本世纪40年代起,美国就开始了提高湿地松产脂力的林木遗传改良工作。建立在
Pinus elliottii Engelm. Var.clliottii is not only a good species of industrial timber, but also one of the best pine tree species with the highest yield of pine resin. Its fat harvesting has always accounted for a significant share of the total returns. Since the 1940s, the United States began to improve the fat production of Pinus elliottii forest genetic improvement. Established