Abstract:In order to investigate the spatial distribution characteristics of soil nutrients in fruit+crop intercropping system, Malus pumila+Glycine max intercropping pattern, typical and representative in the loess region of West Shanxi Province, was studied and soil nutrients in the intercropping system of different ages were monitored separately for comparison. Results showed that:(1) In vertical direction, with the increasing soil depth, available K, available P and organic matters decreased, while total N increased at first and then decreased.(2) In horizontal direction, with the increase in the distance from tree row, soil nutrient contents in 4-year-old intercropping system and 6-year-old intercropping system showed a "W" type distribution, while the 8-year-old intercropping system had a "M" type distribution(except total N). Coincidently, all the extreme values appeared in the distances of 1.5, 2.5 and 3.5 m from tree row, and soil nutrient contents at the maximum points were significantly different from those at the minimum points(p<0.05).(3) Nutrients competition relations between fruit trees and crops changed gradually with the growth of the trees, and the competition of soil nutrients in the 8-year-old intercropping system was fiercest. In accordance with the distribution characteristics of soil nutrients in intercropping systems, nitrogen fertilizer should be the main fertilization, the distance of fruit tree and crops should be increased or planting crops in 8-year-old apple orchard should be prohibited.