扁桃叶片矿质元素在不同生长时期的含量变化及相关性分析

Almond Leaf Mineral and Trace Element Content Changes and Correlation Analysis at Different Growth Stages

【目的】研究扁桃叶片矿质元素在不同生长时期的含量变化,并进行相关性分析,为不同扁桃生长时期营养诊断及合理施肥提供理论依据。【方法】以扁桃‘叶尔羌’品种为试材,研究叶片生长发育期间的N、P、K、B、Fe、Mn、Zn、Cu、Mg、Ca元素的含量。【结果】随着叶片生长发育,扁桃叶片中N、P、K、Mn、Zn、Cu元素含量呈下降趋势,Fe、Mg、Ca元素含量呈上升趋势,B元素含量呈锯齿状趋势。同时,扁桃各个生长时期的元素之间的相关性,展叶期时有3组,膨大期有7组,硬核期有4组,成熟期有6组,各个生长时期的矿质元素间相关均有不同。【结论】根据扁桃不同生长时期矿质元素间促进与拮抗,进行合理平衡施肥,才能满足树体对营养的需要。

【Objective】Almond Leaf Mineral and Trace Element Content Changes and Correlation Analysis at Different Growth Stages. This paper’s goal is to provide a theoretical basis for nutrition diagnosis and rational fertilization during the different growth stages.【Method】The almond ’Yerqiang’ varieties were taken as test materials and the content changes of N,P,K,B,Fe,Mn,Zn,Cu,Mg,and Ca elements in the leaves during the growth periods as the study subjects.【Result】The results showed that during the leaf development,the content of mineral elements N,P,K,Mn,Zn and Cu showed a downward trend and meanwhile Fe,Mg,Ca demonstrated a rising trend,and the B element content was in a zigzag trend. At the same time,there were correlations between the various elements of the growth period. Three groups in the leaf expansion period,seven groups in expanding period,four groups during the period of hard core and six groups in the mature period,their correlation of mineral elements in different growth stages was different.【Conclusion】Therefore,according to the mineral elements at different growth stages of almond,only the rational balance of fertilization can meet the nutritional needs of the tree body.