摘要
二段式培育是前期在自然光照下生长,后期短时间遮荫的观赏型南方红豆杉培育技术。在福建明溪进行的自然光照培育、长期遮荫培育及二段式培育试验,分析其对南方红豆杉生长及观赏性状影响。结果表明,长期遮荫较自然光及二段式极显著性减少主枝数量、分枝数量、均长,自然光与二段式间无显著性差异;自然光照较遮荫与二段式的短期遮荫显著性减少叶片的绿素变化总量、叶绿素a、叶绿素b,叶色变差,遮荫与二段式间无显著性差异;二段式及自然光培育的南方红豆杉在叶长、叶宽显著性小于长期遮荫的,在叶厚性状显著性地大于长期遮荫的,在叶型指数方面无显著性差异。长期遮荫下南方红豆杉株型明显较为发散,枝叶浓密度明显较为稀疏,但二段式培育下短期遮荫(1月时间)对株型及枝叶浓密度较自然光下的无显著性影响。二段式培育较其他两种培育技术在观赏型南方红豆杉培育更加理想。
Two-stage cultivation is a cultivation technology that tree grows with natural lighting in the earlier stage, with short time shade in the late stage. The cultivation trials of landscape tree species Taxus chinensis vat. mairei, were conducted in Mingxi, Fujian. The effects of two-stage cultivation on growth and ornamental traits of T. chinensis vat. mairei were studied. The results show that the shading cultivation with long-period shade reduced the numbers of main branches, sub-branches, average length more than with natural lighting cultivation and there was no significant difference between natural lighting cultivation and two-stage cultivation; the natural lighting cultivation significantly decreased leaves＇ total chlorophyll, chlorophyll a, chlorophyll b more than with shade and short period shade of two-stage method, and made leaves colour worse, and there was no significant difference between shade and two-stage; the two-stage and natural lighting＇ leaf length and width were significantly less than long period shade, leaf thick was obviously larger than long shade, and no significant difference in index of leaves shape; the long term shade made plant type significantly divergent, the branches and leaves dense degree more thin sparse, but the two-stage cultivation with short-term shade （ 1 month ） had no significant differences in plant type and branches and leaves dense degree comparing with natural lighting cultivation. Two-stage cultivation technology had more ideal effects than the other two methods in ornamental traits of landscape type T. chinensis var. mairei.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2013年第3期21-24,共4页
Journal of Central South University of Forestry & Technology
基金
三明市林业重大科研项目(2010-99)
关键词
风景园林
南方红豆杉
观赏性状
生长
二段式培育法
landscape
Taxus chinensis var. mairei
ornamental traits
growth, two-stage cultivation
