Abstract:

In order to further reveal and perfect the theoretical basis of micro-environment regulation mode，twelve-year-old‘Red Fuji’apple trees（rootstock Malus ´ hupehensis Rehd.）in field were used to study the changing of the soil physical property，soil fertility，soil enzyme activities，root activity and root architecture. The results indicated that，compared with the normal fertilization management，the treatment of micro-environment regulation decreased the soil bulk density，increased the soil porosity and enhanced the soil field capacity of 0–40 cm soil layer which was the root concentrated distribution layer，and improved the water content of different soil layer especially during the period of drought. The micro-environment regulation treatment increased nutrient content，had a great effect on increasing the content of organic matter，available N and rapidly available K，and still maintained a high level for three years. The root activity and root density of the micro-environment regulation treatment were significantly higher than that of control，and the effect of increasing the biomass of 0–1 mm diameter root was the most obvious. Compared with composited soil，the buffer system treatment improved the environment of the surrounding soil through the moisture absorption of the brick which further improved the effects on soil and roots.

Key words: apple, micro-environment regulation mode around root zone, soil, root system