Abstract: Through the determination and analysis of single leaf photosynthesis condition of Sparkling Apple, the regulation of photosynthesis varied with the luminous intensity was understood. We investigated the distribution of irradiation within the canopy of apple trees and suggested both single fruit weight and yield could increase through the increase of photosynthetic activity by the use of silver-film to cover the soil surface which largely increased irradiation within the canopy and improved the light receiption of the canopy. In addition, the fruit quality was also improved by the use of this kind of technique.

Key words: Silver-film covering, Silver-film covering, Reflectivity, Irradiation, Photosynthetic activity