【摘要】 本文对罐藏黄桃丰黄的叶片、果实中5种主要矿质营养元素(N,P,K,Ca,Mg)含量的季节性变化进行了研究。结果表明,氮、磷在生长发育前期含量高,后期含量低,叶片与果实表现同一趋势。钾含量在整个测定期间较稳定。钙、镁在叶片上与氮、磷相反,前期含量低,后期含量较高,而果实中钙、镁含量随成熟度提高而逐渐下降。矿质营养元素以叶片中含量最高,用叶分析值作为施肥参考指标较方便、准确。更多还原

【Abstract】 Studies were made on the seasonal changes of N, P, K, Ca, Mg in the leaves and fruit of ’Fenghuang’ peach, a leading cultivar of canning yellow peach for two years. The results of the studies indicate that the percentages of N, P in the early growing season are higher than those in the later and their changes are consistent with those of the fruit. On the contrary, the percentages of Ca, Mg in the early growing season are less, but those in the fruit reduce as ripening. The seasonal change of K during the entire season is relatively stable. As the nutrient content changes in leaves are higher than that in fruit are considered as an index for fertilizing in practice, so it is accurate and convenient to use the leaf analysis data.更多还原