摘要
本文对栽植后两年的银杏嫁接幼树的枝叶生长规律进行了观察，发现银杏新梢具有春梢和夏梢两种；新梢生长有４种方式；短枝亦分春季展叶生长和夏季展叶生长两种，其中春季展叶生长发生于所有短枝顶芽，而夏季展叶生长一般只发生在顶生短枝顶芽。试验证明，采用全采的方式能有效地刺激所有短枝顶芽全部进行夏季展叶生长；采用两次采收方式能使银杏采叶园的产叶量较传统采收方式（一次采收方式）的产叶量提高１倍。
This paper is concerned both with
the ginkgo tree(Ginkgo biloba)in terms of its shootand leaf and with a test of harvesting the leaf
twice a year. Grafted young trees of two yearsold were studied. Results showed that the annual
new shoots consist of the spring shoot andthe summer shoot,each growing in four different
ways. Leaf spread on the spur wasobserved twice a year,one in the spring and the other in the
summer. While the former wasfound on the tip of all spurs on the tree,the latter only occurred
on the tip of top and outerspurs. The leaf harvest test indicated that the summer leaf spread
was greatly promoted onall spurs after all the leaves were plucked. Besides,the leaf yield
doubled when the leaf washarvested twice a year,as compared to the conventional method of
harvest,i. e.,once everyyear.
出处
《经济林研究》
1995年第4期20-22,共3页
Non-wood Forest Research
关键词
银杏
枝叶生长
采叶试验
Ginkgo biloba
Shoot growth
Leaf growth
Leaf harvest.
