Abstract: 【Objective】The study was to explore apple seedlings root characteristics, physical and chemical properties of the deep soil in three different soil interfaces. 【Method】 This study was conducted with biennial Fuji apple young seedlings in a pot culture experiment, to analyze different effects of glass interface, wood interface and brick interface.【Result】Three interfaces influenced extremely significant difference on the root system, including the root system length, surface area and volume. Brick was the highest in the above indexes, while wood took the second place. Wood was the largest and was the brick second on root weight and average diameter. Glass was the worst on all the indexes. Different interfaces showed different root concentration distribution layers, brick and wood on the second layer (10-20 cm), while glass centralized on the fourth layer (30-40 cm). The discretion of the root activities to root respiration did not show a positive correlation because of the ratio of the absorbed roots to the growth roots. Brick interface had stability on temperature in different layers, glass was in favour of water infiltration, and wood had a strong adsorption effect on salt.【Conclusion】Wood and brick interfaces obviously improved the apple root characteristics and the physical and chemical properties of the deep soil, with few different ways. Brick promoted the root length and increased the root number, and wood obviously promoted the secondary structure of root development role. Interface regulation altered the apple root concentration distribution layer.

Key words: different media, interface regulation, root architecture, antioxidant enzymes, soil properties