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本文研究了婆枣不同树势叶片矿质元素含量及其年周期变化。结果表明,不同树势叶片矿质元素含量在生长季的波动有差异,但其年周期变化总趋势基本一致,即随叶龄的增加,叶片N、P、K含量呈下降趋势,Ca、Mg、Mn、Fe和Cu则呈上升趋势。旺树叶片含N量最高,中等树次之,弱树最低。叶片K含量高低顺序与N相反。枣树进行叶分析的采样适期为7月初到8月中。本文对树势与叶片N、K含量的关系及枣园施肥等问题进行了讨论。
In this paper, we studied the mineral elements content and its annual variation in different tree-leaf blades of Po. The results showed that the content of mineral elements in different tree-leaves varied in different growing season, but the trend of total annual cycle was basically the same. With the increase of leaf age, the content of N, P and K showed a downward trend, while the content of Ca, Mg, Mn, Fe and Cu are on the rise. Wang leaves the highest content of N, followed by the middle tree, the lowest weak tree. Leaf K content in the order of the opposite of N. Jujube tree leaf sampling period for the early July to mid August. This paper discussed the relationship between tree vigor and leaf N, K content and fertilization of jujube garden.