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采用逐步回归和典型相关分析方法,对分布在广东、广西、福建、浙江、江西、安徽6省( 区) 的274 株优树的产脂力、含油率、软化点和松香、松节油化学组分等18 个因子与经纬度进行分析,结果表明,各因子之间存在着不同的地理变异:即随着纬度的降低,产脂力、长叶松酸+ 左旋海松酸、新枞酸和去氢枞酸的含量由北向南递增;而含油率、莰烯、石竹烯、山达海松酸的含量则由北向南递减;并显示出产脂力与含油率和某些化学组分含量同时受经纬度的双重控制。
The results of stepwise regression and canonical correlation analysis showed that the lipid yield, oil content, softening point and rosin, turpentine chemical components of 274 trees distributed in 6 provinces (districts) in Guangdong, Guangxi, Fujian, Zhejiang, Jiangxi and Anhui provinces, 18 factors and longitude and latitude were analyzed. The results showed that there were different geographical variations among the factors: With the decrease of latitude, the yield of lipids, palustric acid, levopimaric acid, neoabietic acid and dehydroabietyol Acid content increased from north to south; and oil content, camphene, carnalline, sandaracopimaric acid decreased from north to south; and showed that the fat production and oil content and some chemical composition of both latitude and longitude by the dual control.