华南地区主要油茶物种生长差异分析

Analysis of Growth Difference of Eight Oil-tea Camellia Species in South China

为了更好地了解华南地区主要油茶物种的生长特性,本研究对定植6年8个月的植株生长情况进行了调查,结果表明:不同油茶物种间,在株高、地径、冠幅以及茎、叶、花芽、果实和根系的生长方面均存在显著性差异,其中香花油茶(Camellia osmantha)株高、地径和冠幅分别达到5.39 m、103.92 mm、7.17 m2,根、茎、叶片、花芽和鲜果的质量则分别达到7.58、26.76、9.88、1.42、7.25 kg,在所有8个物种中均最高,生长势最强。利用主成分分析法得到综合得分值来评价8个物种的生长量,依次为香花油茶>陆川油茶(C. vietnamensis)>广宁红花油茶(C.semiserrata)>博白大果油茶(C. gigantocarpa)>普通油茶(C. oleifera)>南荣油茶(C. nanyongensis)>宛田红花油茶(C. polyodonta)>小果油茶(C. meiocarpa)。

To understand the growth characteristics of major oil-tea camellia species in south China,plants that were planted in field for 6 years and 8 months were investigated.Results showed that there were significant differences in plant height,ground diameter,crown width,stem,leaf,flower bud,fruit and root system among 8 species.The plant height,ground diameter,crown width,the quality of root,stem,leaf,flower bud and fresh fruit of Camellia osmantha was 5.39 m,103.92 mm and 7.17 m^2,7.58,26.76,9.88,1.42 and 7.25 kg,respectively,which was the best among the 8 species.It was believed that C.osmantha had the strongest growth potential.Principal component analysis(PCA)was used to evaluate the growth of eight oil-tea camellia species and the order was C.osmantha>C.vietnamensis>C.semiserrata>C.gigantocarpa>C.oleifera>C.nanyongensis>C.polyodonta>C.meiocarpa.