摘要
油桐是我国重要的特用经济树种,历来栽培面积和产销量占世界第一,四川省的栽种面积和产销量在全国居第一位。近年来随着经济的日益发展,油桐栽培区域已由平地向丘陵、山地发展。山地桐林面积日益扩大,进行海拔高度对油桐生长和结实影响的研究,可以为油桐主产区进行山地经济开发规划提供有价值的资料。我们于1982～1986年在四川省万县设点观测,结果整理如下。
At present, the cultivation of tungoil tree (Aleurites fordii Hemsl) in hills is a main tendency of development of its production. The effects of different elevation on the growth and bearing of tungoil trees have been determined for five years from 1982 to 1986 in Longju township, Wanxian county, Sichuan Province. The research on variability of sprouting stage, bud appearing stage and flowering stage has been done at different elevations. The relationship between the conditions of soil fertility, different elevation, and yield of tungoil tree, component factors of the yield and tungoil quality has been analysed. The results show that the elevation is negatively related to seed percentage, oil content and the content of tungic acid obviously. It posed that 700 m is the suitable limit and cultivation may be up to 800 m at most in the Sichuan Province.
出处
《林业科学研究》
CSCD
北大核心
1990年第2期195-199,共5页
Forest Research
