湿地松增脂剂筛选与不同起割林龄的采脂产量分析  

Selection of Resin Accelerators and Analysis on Resin Yield of Different Forest Stand Ages of Initial Resin-tapping of Pinus elliotti

作　　者：黄逢龙[1] 周日巍 吴茂隆 龚伟[1] 周序言 罗亨龙 杨曙刚 HUANG Fenglong;ZHOU Riwei;WU Maolong;GONG Wei;ZHOU Xuyan;LUO Henglong;YANG Shugang(Ji'an Institute of Forestry Research,Ji’an Jiangxi 343011,China)

机构地区：[1]江西省吉安市林业科学研究所,江西吉安343011

出　　处：《浙江林业科技》2025年第2期52-56,共5页Journal of Zhejiang Forestry Science and Technology

基　　金：中央财政林业科技推广示范项目(JXTG〔2019〕17号)。

摘　　要：为开发安全环保的新型湿地松Pinus elliotti采脂剂和探索适宜的湿地松采脂起割林龄,本文通过采脂试验分析了8种不同增脂剂处理的增产率差异和3种不同起割林龄(9 a、13 a和15 a)的采脂产量和生长差异。结果显示:(1)不同增脂剂处理的松脂增产率差异显著。5号增脂剂的松脂增产率为30.69%,仅次于最高的对照CK1,两者没有显著差异,但5号增脂剂绿色环保、无腐蚀性。(2)不同起割林龄的湿地松林的采脂产量差异显著。起割林龄15 a湿地松林的单刀产脂量在2018年和2019年分别为86.18 g和76.49 g,均显著高于起割林龄13 a、9 a的湿地松林。经2 a采脂后,各林龄的采脂树与对照树的树径生长率均差异显著。起割林龄15 a的采脂树的树径受2 a采脂的影响最小,其生长率只减少了4.15%。以上结果表明,5号增脂剂是本试验中湿地松采脂安全环保的最佳增脂剂。综合考虑采脂产量和树径生长率,湿地松采脂起割林龄以15 a为佳。In order to develop safe and environmentally friendly resin accelerator and explore the appropriate stand age of initial resin-tapping of P.elliotti,the differences of increasing ratios of resin yield among different resin accelerator treatments and the differences of resin yield and growth of three forest stand ages(9 a,13 a and 15 a)of initial resin-tapping of Pinus elliottii were analyzed respectively by resin-tapping test in this paper.The results showed that:(1)There were significant differences among those resin yield increasing ratios of resin accelerators in different treatments.The resin yield increasing ratio of No.5 resin accelerator was 30.69%,the second highest increasing ratio of resin yield,next to the control resin accelerator CK1,with no significant difference between the two.While No.5 resin accelerator was non-corrosive and environmentally friendly.(2)There were significant differences on resin yield among different forest stand ages of initial resin-tapping of P.elliottii.The resin yields per tapping of forest stand with initial resin-tapping age of 15 a in 2018 and in 2019 were 86.18 g and 76.49 g respectively,were significantly higher than those of forest stand with initial resin-tapping age of 13 a and 9 a.The diameter growth rate was significantly different between resin-tapping trees and control trees after 2 years of resin tapping.The diameter growth of trees tapped at the initial age of 15 a was minimally affected by two years of tapping,its growth rate was only reduced by 4.15%.The above results indicate that,the firth resin accelerator was the optimal resin accelerator of P.elliottii for safety and environmental protection in this study.Considering resin yield and diameter growth rate,the optimal forest stand age of initial resin-tapping of P.elliottii was 15 a.

关 键 词：湿地松 采脂 增脂剂 起割林龄 采脂产量 

分 类 号：S791.246[农业科学—林木遗传育种]