摘要
为了解油茶叶（Camellia oleifera）不同发育阶段营养元素含量的变化规律，采集不同发育阶段的油茶叶并测定其营养元素含量，结果表明：油茶叶不同发育阶段均表现出氮最高，其次是钾元素，铜的含量最低；随着油茶叶生长，氮、磷、钾和铜元素含量大致呈先升后降的变化趋势，钙、铁、锰和硼则相反，锌则逐渐降低，而镁差异不大；油茶叶不同发育阶段营养元素总含量为23．39-53．53g／kg，前4个发育阶段油茶叶营养元素总含量差别不大，但到成熟期急剧下降；建议油茶营养调控中要注重各营养元素的含量和比例，特别是后期要注重钙、铁、锰和硼等元素的施用。
The nutrient contents in Camellia oleifera leaves at different developing stages were investiga ted in order to understand variation of nutrient contents. Results showed that the content of N in Camellia oleifera leaves was recorded as the highest at different developing stages, followed by K, and the content of Cu was recorded as the lowest. Contents of N, P, K and Cu in Camellia oleifera leaves enhanced first and then decreased during growth period, and variation of Ca, Fe, Mn and B was contrary. The content of Zn in Camellia oleifera leaves decreased gradually, and the content of Fe hadn＇ t significant difference. The total content of nutrients ranged from 23.39 to 53.53 g/kg at different developing stages. At first 4 developing stages, the total content of nutrients had no significant difference, but decreased sharply at maturity-stage. The content and proportion of nutrients were concerned at nutrient regulation of Camellia oleifera, especially the application of Ca, Fe, Mn and B at maturity-stage.
出处
《广西林业科学》
2013年第3期237-240,共4页
Guangxi Forestry Science
基金
广西林科院基本科研业务费专项(林科201209)
"十一五"广西林业科技项目(桂林科字〔2010〕第2号)
关键词
油茶
叶片
发育阶段
营养元素
Camellia oleifera
leaf
developing stages
nutrients
