【摘要】 本文概述了胡枝子、杭子梢、花木兰、荆条、伞花胡颓子等5个树种的种子休眠类型。通过实验,找到了热水浸种最适温度、硫酸浸种最佳时间和层积催芽最适天数。观测了这几个树种的苗木年生长过程,划分了生育阶段。更多还原

【Abstract】 The authors outlined the seed dormancy types of five tree species including shrub lespedeza (Lespedeza bicolor Turcz. ) , Chinese clover-shrub (Campylotropis macrocarpa Rehd. ) , Kirilow Indigo (Indigofera kiri-lowii maxim ex palibin. ) , Heterophyllous Negundo Chaste tree (Vitex ne-gundo var. heterophylla Rehd ) and Autumm Elaeagnus (Elaeagnus umbellata Thunb) . Through a series of experiments the optimum temperature for hot-water seed treatment, the optimum time for seed treatment with sulphuric acid and the optimum duration for stratification were defined. Furthermore, the seedling annual growth patterns of these tree species were observed and were divided into several phases.更多还原