[Effects of zinc levels on synthesis and translocation of 13C-photoassimilates in leaves to fruit of apple during fruit expanding stage].

To explore the effects of zinc levels on the synthesis and translocation of photosynthetic products from leaves to fruits, and to lay a theoretical foundation for improving fruit quality through zinc supplementation during the critical period of apple fruit development, a field experiment was carried out with a eight-year old 'Hanfu'/GM256/ Malus baccata13421234331313313313324142