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以晋西黄土区核桃-大豆间作系统为研究对象,采用分层挖掘法对核桃-大豆间作系统细根分布特征及地下竞争状况进行研究,旨在为该地区果农间作系统的高效可持续经营提供科学依据。结果表明:核桃细根在垂直方向上主要分布在0～40cm土层内,水平方向上55.7%的细根集中分布在距树行0.5～1.5m区域中;间作物大豆的根系在垂直方向上集中分布在0～20cm土层内,水平方向上根干重随距树行距离的增加呈增加趋势;在水平方向上距树行1.0～2.5m的区域是核桃和大豆地下种间竞争主要发生区,其中以1.5～2.0m区域的竞争最为剧烈。
Taking the walnut-soybean intercropping system in the western Shanxi Province as the research object, this paper studied the fine root distribution characteristics and underground competition status of the walnut-soybean intercropping system using the stratified mining method, which aims to provide the sustainable and efficient management for the intercropping system Scientific basis. The results showed that in the vertical direction, the fine roots of walnut were mainly distributed in the soil layer of 0-40 cm with 55.7% of fine roots concentrated horizontally in the area of 0.5-1.5 m from the tree line. The roots of inter-crop soybean were vertically oriented Concentration distribution in 0 ~ 20cm soil layer, root dry weight in horizontal direction increases with increasing distance from tree line; in the horizontal direction 1.0 ~ 2.5m from the tree line is the main occurrence of interspecific competition between underground walnut and soybean District, of which the most intense competition in the 1.5 ~ 2.0m area.