矮化中间砧红星苹果树叶片内矿质营养元素含量动态的研究

本试验通过定期测定以M_7,MM_(106),M_4为中间砧,山定子为基砧的紅星苹果树叶片内矿质营养元素的含量表明:年周期内不同中间砧红星树叶片内矿质营养元素的季节性变化很大,而各砧木之间在同一季节具有一定的差异。M_7中间砧紅星树叶内K、Ca、Mg、Na含量显著高于M_4和MM_(106);而Zn、P、Nn、Ca的含量M_4中间砧树高于MM_(106)和M_7;MM_(106)中间砧叶片中N含量高于M_7和M_4;Fe在各不同中间砧树叶片内含量大致相同。各矮化中间砧红星叶片內矿质营养元素含量虽存在着一定的差异,但在年周期内的变化规律大致相近;各常量元素含量的年周期变化曲线具有特定的模式。

STUDY ON CHANGES OF THE AMOUNT OF MINERAL ELEMENTS IN LEAVES OF THE DWARF INTERSTEMS WITH RED STARKING APPLE TREES

The mineral nutritive level of leaves of Red Starlung apple trees (Malus domestic Borkh) grafted on dwarfing interstems M_4, M_7 and MM_(106) grafted on Maius baccata was tested over a fixed period of time. The results showed that seasonal changes of the amount of nutritive elements in the leaves of all interstems fested were significant.The changes differed in different interstems in the same season. The contents of K, Ca, Mg, Na in the leaves of Mr interstem were higher than that of M_4 and MM_(106); the contents of Zn, P, Mn, Cu in the leaves of M_4 were higher than that of M_7 and MM_(106); the content of N in the leaves of MM_(106) was higher than that of M_7 and M_4; the contents of Fe in the leaves of different interstems were approximately the same. Although there were some differences in mineral contents in the leaves of different dwarfing interstems of Red Starking apple trees, the changing pattern was similar.The changing curve of major elements contents followd a specified model.