摘要
西双版纳热带植物园，从７０年代初先后引种栽植培１０种国外松，经栽培试验证明：７种国外松能正常生长发育，有５种生长速度超过思茅松。生长最快的卡西亚松，树高年生长量为１．９７ｍ，胸径为２．５８ｃｍ，是思茅松的１．７０倍。国外松在定植初期株高增长较慢，径粗增长较快。绝大多数国外松在遮荫条件下的生长量比不遮荫高１０％～３０％，存活率高２０％一５０％。同时本文还对国外松的物候、干形、抗性等方面作了研究，探讨了结实量少、发芽率低的原因，并提出促进开花结实的措施。
species of Pine abroad were introduced and cultivated in Xishuangbanna Tropi-cal Botanical Gardon from 1970s,among which 7 species grow normally,5 species grow fasterthan Pinus kesiya var. langbianensis,and the one that grows the fastest is Pinus kesiya whoseannual height growth is 1.97m,diameter breast一high growth is 2.58cm and that is 1.7 times ofP. kesiya var.langbianensis,The experiment indicates that in the early stage of field setting,the height increases slower while diameter increases faster and the increment under shading ismostly 10%～30% higher than that of no shading, survival rate increases 20%～50%。Furthermore,the paper has given some research reports on phenophase、stem form、resistanee property of the Pine abroad,discussed the possible reasons of less fruits、 low ger-mination,and in the end,suggested some measures to promote flowing and fruiting。
出处
《云南林业科技》
CAS
1996年第3期41-46,共6页
Yunnan Forestry Science and Technology
关键词
国外松
引种
栽培
Pine abroad,Introduction and cultivation
