马尾松产脂量与针叶形态特征的关系

以广西凭祥27 a马尾松人工林为研究材料，通过分析马尾松不同产脂类型针叶形态特征差异，探讨产脂量与针叶形态特征的关系，为马尾松高产脂优树选择提供理论基础。结果表明:1）针叶长度:2年生针叶>1年生针叶，高产脂类型>低产脂类型。2）针叶鲜重:2年生针叶>1年生针叶，高产脂类型>低产脂类型。3）针叶叶柄厚度:2年生针叶>1年生针叶，高产脂类型>低产脂类型。4）马尾松产脂量与1年生针叶和2年生针叶形态特征均呈正相关关系。与1年生针叶长度相关性最大，相关系数为0.743。马尾松不同产脂类型的针叶形态特点不同，通过了解产脂量与针叶形态特征的相关关系，为下一步进行马尾松高产脂优树的早期选择提供理论基础。

Relationship between the Resin Yield and Needle Morphology Characteristics of Pinus massoniana

Pinus massoniana plantations with the age of 27 a occurring in Pingxiang of Guangxi,China,were taken as the research objects.By analyzing the difference in the morphological characteristics of different resin yield types in P.massoniana needles,the relationship between the morphological characteristics of the needles and the resin yields was discussed.The objective of this study was to provide a theoretical basis for the selection of high-yield-resin trees of P.massoniana.The results showed that 1) for the needle length:2-year needle>1-year needle,and the high-yield-resin type>the low-yield-resin type.2) For the needle fresh weight:2-year needle>1-year needle,and the high-yield-resin type > the low-yield-resin type.3) For the needle thickness of petiole:2-year needle>1-year needle,and the high-yield-resin type>the low-yield-resin type.4) The resin yield was positively correlated with the morphological characteristics of 1-year needle and 2-year needle.The correlation coefficients of 1-year needle length was 0.743.Different resin yield types corresponded with different needle morphological characteristics.The results of this study indicated that the morphological characteristics of P.massoniana needles were different among different resin yield types,which could be used as a theoretical basis for the early selection of high-resin trees of P.massoniana.