马尾松不同径级产脂量及松脂成分差异研究

Study on resin yield and turpentine composition differences of Pinus massoniana with different diameter classes

采用长期定位观测,定时、定株收获的方法,研究了马尾松9种径级与产脂量以及6种径级与松脂成分之间的关系。分析结果表明:不同径级产脂量差异显著,随着径级的增大,产脂量也随之增加,呈正相关关系,初步认定马尾松产脂林采割起始径级不小于18 cm;不同径级的松脂主要成分一致,各成分含量存在一定差异,含油量有随着径级增大而增加的趋势,α-蒎烯含量高是马尾松松节油的特征。

By adopting long-term positioning observation, timing-harvesting method,ifxed tree harvesting method, The relations among nine kinds ofPinus massonianaDBH and resin yield, and six kinds of DBH and turpentine composition were investigated studied. The results show that the different DBH tree’s resin yield were signiifcantly different, the resin yields increased with the DBH increasing, there was a positive correlation between the DBH and the resin yield; It was initially identiifed thatP. massonianaresin tapping forest starting DBH level of resin tapping was not less than 18 cm; The main components of turpentine were the same in different DBH, there were some differences in the content of each component; There were a trend of oil content increasing with the increasing of DBH, high levels ofα-pinene is the characteristic ofP. massoniana turpentine.