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对“大白铃枣”、“大瓜枣”、“梨枣”、“苹果枣”、“晋矮3号枣”果实生长发育时期枝条内的氮、磷、钾、钙含量的变化规律进行了研究。结果表明:枣品种多年生枝条在整个年周期内矿质元素的含量变化总趋势呈一定的变化规律,氮元素含量变化先升高后下降;磷元素含量变化为双峰曲线;钾元素含量呈波折上升趋势;钙元素含量变化前期较平缓,后期攀升较快。根据矿质元素变化规律,在枣树生长发育前期应以补充氮、磷元素为主,生长发育后期主要以补充磷、钾元素为主。
The contents of nitrogen and phosphorus in shoots during the growth and development of fruits such as “Da Baizaozao”, “DaGuazao”, “Zizyphus jujuba”, “Apple jujube”, “Jinzhao No.3zao” , Potassium, calcium content changes were studied. The results showed that the total variation trend of mineral elements in the perennial branches of jujube varieties had a certain variation trend, the content of nitrogen increased first and then decreased, the content of phosphorus changed as bimodal curve, and the content of potassium increased twists and turns Trend; changes in calcium content of the early flat, later rapid rise. According to the variation of mineral elements, nitrogen and phosphorus should be supplemented at the early stage of jujube growth and mainly phosphorus and potassium should be added at the later stage of growth and development.