不同育苗技术下烤烟中矿质元素含量的差异

Analysis on the Difference of Mineral Nutrition Content in Tobacco by Different Floating System Technical Measures

以K326为材料,采用4种不同漂浮育苗技术研究烤烟生长期间,叶、茎、根中8种矿质元素含量的差异。结果表明,不同处理下,烤烟叶片P、K、Ca含量差异不明显,生长前期根和茎中差异明显;叶片Mg含量在各时期差异均达到极显著水平,尤其是循环增氧系统+紫外杀菌技术和具有根系定向培养技术的漂浮育苗处理;叶、茎、根中Na、Mn、Zn、Fe、Cu等微量元素含量与CK相比,各时期均达极显著水平。应用循环增氧及紫外杀菌方式育苗和根系定向生长育苗方式处理的烟株对矿质元素吸收能力较强,矿质营养协调,适宜大规模推广应用。

Differences of 8 mineral elements in leaves, stems and roots of flue-cured tobacco during growing period, were studied by different floating system technical measures with K326 for the materials in order to detected effect of absorption and utilization to mineral nutrition and breed strong seedling. The results showed that ： difference between the content of Phosphorus （P）, Potassium （K）, Calcium （Ca） in leaves among each treatment was not significant, but there was significant difference of stems and roots among treatments in the early growing period. The content of Magnesium （Mg） in leaves among all treatments reaching an extremely remarkable level, especially treatment 3 and 4; In all growing period, the content of microelement including sodium （Na）, manganese （Mn）, zinc （Zn）, ferrum（Fe） ,copper （Cu） in leaves, stems and roots between treatments and control was significant. The tobacco using system of circulation increasing oxygen with UV light and directional growth of root had better absorbent and coordination of mineral nutrition which was suitable application on a large scale.