<正>为了比较柔化辊和光滑辊对旋切单板质量的影响，对加拿大Forintek研究所的一台小型旋切机进行了改造，安装了数字控制装置并配置了两种压辊。按照L9（34）正交试验组织试验，每组变量设定值重复实验2次，共旋切了45段云杉木段。在其他参数设置相同的情况下，考查了旋刀倾角（PA）、垂直间隙（VG）和水平间隙（HG）3个变量对单板旋切质量的影响，并比较了压辊形式对单板质量的影响。结果表明：采用柔化辊旋切的单板的湿单板卷曲率比光滑压辊下降了60%，单板厚度较均匀，厚度偏差较小；柔化辊与光滑压辊的最佳旋切设置完全不同。柔化辊的最佳旋切设置为：旋刀倾角90.5°，垂直间隙9.84mm，水平间隙2.79mm；光滑压辊的最佳旋切设置为：旋切倾角88.5°，垂直间隙11.75mm，水平间隙2.54mm。

While compiling Araliaceae for the Flora of China, the author exhaustively examined all of the specimens deposited in the main herbaria of Chinese and foreign countries such as BM. K. E. P. W. G. A. MO. PE. KUN?etc. The author also found some names of the genus or species should be revised. This paper reports a new combination, a new rank (status), a new variety and twenty synonyms for the genera Pentapanacc Seem. and Eleutherococcus Maxim. such as: Pentapanax lon～gipes (Mirr.) Shang et C. F. Ji, Eleutherococcus leucorrhizus var. setchuenensis (Harms) Shang & J. Y. Huang, E. trifoliatus var. integerrimus Shang &. P. Lowry and several taxa that must be placed in synonymy were discussed and cited in this paper.