摘要
测定了不同浓度处理的水培茶苗根、茎、叶中及土施和喷施Zn的茶树叶中P、K、S、Ca、Mg、Mn、Al、Zn、Mo、Na、B、Cu、Fe的含量;结果表明,茶苗对Zn有较强的吸收能力,Zn处理<0.50ppm时,茶苗体内Zn大多运往叶中;当叶中达生理需要量后,Zn也在根、茎中积累:当生长介质中Zn达一定量后,Zn在叶中积累。茶树Zn P间有明显的拮抗作用,但拮抗效应存在于一定范围内。Zn处理降低水培苗体内Ca、Mg、Cu、Mn、K、S、Al、B的含量,但土施和喷施Zn均提高K、S、Al、B的含量,同时,Zn处理明显减少茶树体内Mo、Na的含量。Zn与茶树体内Mo、Na间有一定的拮抗作用。
The content of P,K,S,Ca,Mg,Mn,Al,Zn,Fe,Cu,Mo,Na,B in root,stem and leaf of wa-ter-cultured tea seedlings tveated with Zn in solution,and in new shoots of by tea plant spraying and roil application of different concentrations of Zn,were determinated. The results showed that the ability of Zn absorption was stronger in tea seedlings, when the concentration of Zn > 0. 50 ppm,the more Zn translocated to leaves from roots. Zn accumulated in roots and stems when the concentration of Zn was at the critical level in leaves; Zn accumulated in leaves when the concen-tration of Zn in culture medium reached a certain level. There was significant antagonism between Zn and P,but the antagonism was in some extent. Zn decreased the content of Ca,Mg,Cu,Mn, K,S,Al,B in water-cultured seedlings and increased the content of K,S,Al, B in new shoot of tea plant treated by spraying and soil application. Meanwhile, Zn decreased the content of Mo and Na in tea plants significantly. There was an antagonism between Zn and Mo,Na in tea plants.
出处
《作物学报》
CAS
CSCD
北大核心
1994年第2期248-252,共5页
Acta Agronomica Sinica
基金
国家自然科学基金资助项目
关键词
茶树
锌
无机元素
Tea plant,Zinc,Inorganic elements
