糯米糍荔枝叶片矿质养分含量充足范围的确定

对深圳市4个典型丰产园糯米糍荔枝叶片7种矿质养分(氮、磷、钾、钙、镁、锌和硼)含量的统计分析表明:采样地点和生育时期均对叶片营养元素含量有显著的影响。四个关键生育时期(末次秋梢老熟期、花芽形态分化期、谢花期和果实成熟期)的单株样与混合(多株)样的供试矿质养分含量之间大部分没有显著差异。本研究根据丰产园糯米糍荔枝叶片混合样的分析结果提出了7种矿质养分的充足含量范围。

Determination on the Sufficient Ranges of Mineral Nutrient Contents in the Leaves of Nuomici Litchi(Litchi chinensis Sonn)

The contents of 7 mineral nutrients(Nitrogen,Phosphorus, Potassium,Calcium,Magnesium,Zinc,and Boron) in the leaves of Nuomici Litchi from four typical high-yield Nuomoci Licthi orchards in Shenzhen City were statistically analyzed.The results showed that the contents of leaf mineral nutrients within the same cultivar were affected by different localities and growth stages.Furthermore,the contents of leaf mineral nutrients in the single-tree leaf samples were not significantly different from those in the mixed-tree samples taken in four growth stages(the mature stage of terminal autumn shoot,flower bud morphological differentiation stage,the deciduous stage of flower and the mature stage of litchi fruit) for most nutrients tested.Finally,the sufficient ranges of mineral nutrients in the leaves of Nuomici Litchi for the main four growth stages were put forwards according to the analytical data of the mixed-tree samples from the four high-yield Noumici Orchards.