摘要
本文对幼龄叶用银杏从不同密度、不同采叶方式，综合产叶量和黄酮含量两方面因素，对其药用价值进行了分析评价，结果表明：３ 年生幼龄叶用银杏种植密度以 ７．５ 万株／ｈｍ ２ 为佳，７．５～１１ 万株／ｈｍ ２ 均宜，年２ 次采叶包括 １／２ 采、全采和 １ 次性采叶对照 ３ 种采叶方式无显著性差异，以 １ 次性采叶为宜。
The leaf yield of young ginkgo trees and the content of flavone extracted from the leaves varied with the planting density and leaf plucking system. The comparative test showed that for 3 year old trees the approproate planting density can range from 75 000 to 110 000 stems per ha, with the former being optimal. One time leaf plucking per year showed insignificant difference from two time plucking (half plucked at the first time and wholly plucked at the second time), but one time plucking system is recommended.
出处
《经济林研究》
1999年第3期14-15,0,共2页
Non-wood Forest Research
关键词
银杏叶
栽培密度
采叶方式
黄酮含量
Ginkgo biloba
Planting density
Leaf plucking system
Flavone content.
