三尖杉不同种源苗期生长性状分析

研究了14个三尖杉种源和篦子三尖杉苗期的生长情况,结果表明,三尖杉和篦子三尖杉幼苗生长曲线均趋直线,整个生长过程中没有明显的停滞期;14个三尖杉种源和篦子三尖杉生长曲线可分为Ⅰ、Ⅱ两种类型,其中江西崇义、上饶,福建明溪,安徽黄山,广东午远5个种源1年生苗生长曲线属Ⅰ型,该类型整个生长期生长较快,但在前期生长较缓慢,后期有一明显相对生长迅速期;江西修水、井冈山,贵州黎平、从江,云南石屏,河南洛阳,四川峨嵋,湖南绥宁,湖北恩施9个种源1年生苗生长曲线属Ⅱ型,其整个生长期生长速率均保持在一个比较低的水平,没有明显可区分的相对生长迅速期;篦子三尖杉生长曲线接近Ⅱ型,介于不同种源三尖杉之间。对14个三尖杉种源和篦子三尖杉1年生苗生长量进行方差分析,结果表明,三尖杉种源间幼苗生长量存在极显著差异,种源与试验地的交互作用也存在极显著差异,不同种源间的苗高生长差异较大,生长量最大的为安徽黄山种源,1年生苗高为18.60 cm,生长量最小的为湖南绥宁10.90 cm,篦子三尖杉1年生苗高生长量为11.00 cm。

Seedling Growth of Cephalotaxus fortunei of Different Provenances

Study was made on seedling growth of Cephalotaxus fortunei of 14 different provenances and of C.oliveri.The result showed that the 1-year seedling growth of the two species had no evident lag period.That from Chongyi and Shangrao of Fujian,Huangshan of Auhui,Wuyuan of Guangdong had quick growth during seedling period,relatively slow at earlier period but quick at later period,while that from Xiushui and Jinggangshan of Jiangxi,Liping and Congjiang of Guizhou,Shiping of Yunnan,Luoyang of Henan,Emei of Sichuan,Suining of Hunan,Enshi of Hubei maintained a slow growth rhythm.1-year seedling growth of C.oliveri was similar to the later type.Variance analysis on those 1-year seedlings demonstrated that it had significant difference of seedling increment among 14 provenances,and interaction between provenance and experimented site.The highest seedling of 1-year seedling was from Huangshan of Anhui with 18.6cm height,and the lowest from Suining of Hunan with 10.9cm,that of C.oliveri was 11.0cm.