秃杉引种潜力与生态适应性研究*
A Study on Taiwania flousiana’s Ecoadaptation and Introduction Potentiality
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摘要: 在江苏苏北平原、苏南低山丘陵和浙江富阳低山丘陵引种珍稀树种秃杉,幼龄阶段的结果表明:秃杉有较强的生态适应性,能够适应5~700m的海拔、pH值4.9~6.0的酸性土和pH值8~8.8的碱性(脱盐)土。秃杉在幼龄期较耐荫庇,怕高温日灼。幼苗易发生冻害和溃疡性苗枯病害。苗木抗寒性和抗病性随年龄增大而增强。一般2年生时无冻害,3年生以后无病害发生。4~5年生幼林的树高、胸径年均生长量已达到或超过原产地;生长多优于同龄杉木,并且有明显的抗雪(压、折)性,因而具有较高的引种潜力和发掘利用前景。Abstract: The results of introducing the young tree of Taiwania ilousiana in northern plain of Jiangsu, hilly country in southern Jiangsu and in Fuyang County of Zhejiang Province are reported in this paper. It shows that the T. flousiana's ecoadaptability is comparatively high; it could grow at acid soil for an elevation of 500~700 m with pH 4.9-6.0 and alkaline (desalination) soil with pH 8~8.8. T. flousiana is tolerant of shade and sensitive to high temperature at young stage. It's seedlings are suceptible to frozen damage and fusicoccum blight, the capability of cold and disease resistance increases as it grows. The frozen damage will not happen when T. flousiana is 2-year old and the disease damage will not happen either after it's 3 years. The annual average growth of tree height and DBH of 4~5 years plantation comes up to or exceeds that in the origin. It is common that T. flousiana's growth is superior to that of Cunninghamia lanceolata in the same age, and its resistance to snow is obvious. Therefore, the introduction and utilization of T. ilousiana are promising.
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