福建林学院学报2001，Vol.21Issue(2)：165-168,4.
火炬松、湿地松和马尾松采穗圃营建技术
Building Techniques of Cuttings Orchard of
Pinus taeda,Pinus elliottii and Pinus massoniana
摘要
Abstract
In this paper,the effect of time and retention hei ght of topping on quantity,length and basal diameter of coppice shoot of Pinus taeda,Pinus elliottii and Pinus massonian a has been studied.The results showed that because of difference of b iological properties among three tree species, suitable time and retention heigh t of topping among three tree species are different.The suitable topping time o f Pinus taeda is August 20 to August 25,the best retention height of topping is 15 cm; The suitable topping time of Pinus masson iana is July 30, the best retention height of topping is 8 cm; The su itable topping time of Pinus elliottii is August 15 to Aug ust 20,the best retention height of topping is 15 cm.关键词
火炬松/湿地松/马尾松/采穗圃/剪顶时间/剪顶高度分类
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来端..火炬松、湿地松和马尾松采穗圃营建技术[J].福建林学院学报,2001,21(2):165-168,4.
