超大宽行桉农间作模式下桉树人工林根系的研究

Research on root system of fucalyptus-crops interplanting with extra-big row

对超大宽行桉树间作菠萝模式下的桉树人工林根系进行调查研究,结果表明:桉树根系变化趋势是随着土层的加深,根量呈线性减少;间作系统内桉树的根系在南北方向上的分布规律和对照纯林一致,都表现为南面的根量比北面少;超大宽行桉农间作模式下种植的三龄桉树的根系除了对窄行带内的土壤养分空间充分利用,并向宽行间作带内扩展,达到利用间作带作物施放的作物肥料,使自身土壤养分空间比纯林的大,林木木材生产量发展潜力巨大。

Root system of the eucalyptus-crops interplanting with extra-big row has been studied on this paper. The result showed that the root volume of the eucalyptus reduces with the deepening of the soil, the distribution of the root system in interplanting mode is the same with the pure eucalyptus mode which the root volume in the south is less than in the north, the boots of the eucalyptus-crops intelplanting mode with extra-big row can utilize more soil space compare with pure eucalyptus mode and the eucalyptus-crops interplanting mode with extra-big row is an ideal eucalyptus-crops interplanting mode.