油茶果实生长发育期氮磷钾含量变化研究

Change of Macronutrient Content in Fruit Growing Stage of Camellia oleifera

摘要: 在果实生长发育阶段，以油茶果实和叶片为试材，分析测定N、P、K含量的变化规律。结果表明：叶片和果实中N的含量随时间推移不断下降；果实中P的含量在果实迅速生长期不断上升，在油脂合成阶段不断下降，叶片中P含量变化规律与果实基本一致；叶片中K含量呈现出“降—升—降”的规律，果实中K含量随果实膨大始终保持逐步上升的趋势。

Abstract: In order to find out change law of the content of N (nitrogen), P(phosphorus) and K (Potassium) in leafs and fruits in fruitgrowing stage of Camellia oleifera. The results showed that content of N in leafs and fruits decreased gradually along with the time. The content of P in fruits increased during the fruit rapid growth period，while decreased during the period of synthesis of lipid. The content of P in leafs change present the variation tendency of “drops-rises-drops”. The content of K in fruits kept increasing during the period of fruits growth.