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对叶用银杏营养元素、叶绿素含量年周期变化的研究结果表明，其叶的干、鲜质量５～６月增加最快；Ｎ、Ｐ、Ｋ含量的年周期变化与果用林存在明显差异；叶绿素含量在７～８月间达最高值；肥培管理较好的样株其单叶质量、Ｎ、Ｐ、Ｋ含量和叶绿化含量明显高于管理粗放的样株。
The results showed that the leaf dry and fresh mass increased fastest from May to June. The annual variation of N, P, K contents was significantly different from that of fruit forest. The chlorophyll content reached the highest value from July to August. The single leaf quality, N, P, K content and leaf greening content of the better-manured sample were obviously higher than those of the extensive sample.