套袋和未套袋鸭梨果实中的主要营养成分及常量元素动态变化研究

Studies on Dynamic Changes of Main Nutritive Components and Macro-Elements in Unbagged and Bagged Fruits of‘ Ya li’Pear

本试验以鸭梨为试材,研究套袋和未套袋果实生长发育过程中主要营养成分和常量元素含量变化。试验结果表明:套袋和未套袋果实中淀粉、可溶性糖、还原糖、有机酸、维生素C的含量变化趋势基本一致;在果实发育期间,未套袋果实中淀粉、可溶性糖、还原糖、维生素C含量均高于套袋果实,有机酸含量均低于套袋果实。果实中氮、磷、钾、钙、镁元素含量随果实的膨大而逐渐降低,未套袋和套袋果实中氮、磷、钾、钙、镁元素变化规律一致;未套袋和套袋果实中氮、磷、钾、钙、镁元素含量基本相同。

Changes of main nutritive components and the macro-elements in both unbagged and bagged fruits of‘Ya li’pear were studies in this experiment.The results showed that starch,soluble sugar,reducing sugar,organic acid,Vitamin C changed in the same trend in unbagged and bagged fruits.The contents of starch,soluble sugar,reducing sugar,Vitamin C in the unbagged fruit were more than that of the bagged ones during the whole growth period,while the content of organic acid was in the opposite direction.Contents of N,P,K,Ca and Mg reduced gradually with the growing of fruits.The changes of contents of N,P,K,Ca and Mg in the bagged and unbagged fruits showed the same pattern.The contents of N,P,K,Ca and Mg in the unbagged fruits were approximately equal to those in the bagged ones.