Faculty of Forestry, Department of Forest Vegetation Ecology, Swedish University of Agricultural Sciences, S-901 83, Umeå, Sweden.
J Chem Ecol. 1992 Oct;18(10):1857-70. doi: 10.1007/BF02751109.
Poor establishment and reduced seedling growth of Scots pine (Pinus silvestris L.) in northern Sweden is related to an allelopathic inhibition by the dwarf shrubEmpetrum hermaphroditum Hagerup. Indoor bioassays with green and brown leaves ofEmpetrum have strong negative effects on rooting ability, radicle elongation, and growth of Scots pine seedlings. Bioassays with soil samples show that phytotoxic substances leached fromEmpetrum foliage accumulate in the soil. Field experiments reveal that chemical inhibition byEmpetrum, causing high mortality and slow growth of pine seedlings, can be reduced by adding activated carbon to the soil.
瑞典北部的苏格兰松（Pinus silvestris L.）生长不良，幼苗成活率低，这与矮灌木柳叶菜（Empetrum hermaphroditum Hagerup）的化感抑制作用有关。用柳叶菜的绿叶和枯叶进行室内生物测定，对云杉幼苗的生根能力、主根伸长和生长有很强的抑制作用。用土壤样本进行的生物测定表明，从柳叶菜叶片中浸出的有毒物质在土壤中积累。田间试验表明，通过向土壤中添加活性炭，可以减少柳叶菜对松树幼苗的化感抑制作用，从而降低松树幼苗的高死亡率和生长缓慢的问题。
