关键词: 硒锌交互, 茶, 微量矿质营养

Abstract: By spraying different levels of Na₂SeO₃(50~200 mg/kg) and ZnSO₄·7H₂O (0.25%~1.00%) on leaves, this paper studies the influence of Se, Zn and Se-Zn interaction on microelement nutrients of Mengshan tea. The results shows different treatments has effect on microelement nutrients in different seasons significantly. In spring, Se, Zn and Se-Zn interaction increases contents of Se, Zn, Fe, and has antagonism effect on Mn, Cu. In summer, Se, Zn has synergistic effect on contents of Se, Zn, Fe, Mn, Cu, and interaction increases Se, Zn, Fe contents, but decreased Mncontent, and does not have significant effect on Cu. In autumn, Se, Zn and Se-Zn interaction has synergistic effect on Se, Zn, Fe, but has antagonistic effect on Cu, Mn, and content of Cu is lower than CK about 7%~30%. If foliar spraying of Na₂SeO₃ and ZnSO₄·7H₂O were to improve the microelement nutrients of Mengshan tea, the best spraying concentrations of Na₂SeO₃ and ZnSO₄·7H₂O are 100 mg/kg and 0.50%, respectively. In order to increase contents of Se, Zn, and Fe, Mn, Cu at the same time, the best concentrations are 50 mg/kg and 0.25%, respectively. And the appropriate seasons are spring, summer and autumn.

Key words: selenium-zinc interaction, tea, microelement nutrients