银杏叶片中营养元素含量的季节性变化研究  

Seasonal Changes of Contents of Nutrient Elements in Leaf of Ginkgo biloba

作　　者：樊卫国[1] 刘进平[1] 文晓鹏[1] 安华明[1] 

机构地区：[1]贵州大学农学院园艺系,贵阳550025

出　　处：《贵州农业科学》2000年第2期6-8,共3页Guizhou Agricultural Sciences

基　　金：贵州省"九五"科技攻关项目! (黔科合计字 (1996 ) 10 33号 )

摘　　要：对银杏叶片中的营养元素含量的季节性变化进行研究 ,结果表明 :银杏新梢叶片中氮、磷、钾、锌、锰、铜元素的含量随叶龄增大而降低 ;钙、镁元素的含量随叶龄增大而增加 ;在幼叶期 ,铁的含量随叶龄增大而减少 ,但在 5月份后 ,铁的含量逐渐增加。根据研究结果 ,初步确定了叶分析的采样时期。Seasonal variation in the content of nutrient elements in the leaf of ginkgo tree were studied. The results showed that the content of N, P, K, Mn, Cu in the leaf of shoot dropped with the age of the leaf, whereas that of Ca, Mg, increased with the advance of the leaves. The content of Fe in the leaf dropped with the development of the young leaf, but after May it came to increase gradually. So, according to the results the suitable sampling period for leaf analysed and the harvest period of ginkgo leaf could be determined preliminarily.

关 键 词：银杏 营养元素 季节性变化 叶片 采样时期 

分 类 号：S664.301[农业科学—果树学]