碳酸氢钠对绒毛白蜡种子萌发和幼苗生长的影响

• 作 者: 徐明广 乔永进 田保状
• 机 构: 山东农业大学林学系,山东农业大学林学系,山东农业大学林学系 泰安 271018,泰安 271018,泰安 271018
• 出 处: 林业科技通讯
• 发表日期: 1993年01期
• 关键词: 毛白蜡 真叶 活力指数 指数和 吸胀 绝对含水量 鲜重 忍耐能力 生理阶段 耐盐碱能力

NaHCO_3,溶液漫种能影响绒毛白蜡种子的吸胀和发芽质量,导致发芽率、发芽指数和活力指数下降;在NaHCO_3逆境下形成的幼苗,苗高减小,鲜重降低。具有一对真叶的幼苗在含有NaHCO_3的营养液中水培,NaHCO_3浓度越高;幼苗高生长量越小,苗木重量越轻;但浓度为0.2%的溶液可促进幼苗根系生长,使其根茎比上升。一对真叶的幼苗对NaHCO_3的抗性比2对真叶的幼苗强。

NaHCO_3 solution can affect the imbibition and sprouting quality of the seeds, resulting in the decrease of germination rate, germination index and vigor index. The seedlings formed under the stress of NaHCO_3 decreased and the fresh weight decreased. The seedlings with a pair of true leaves were hydroponic in the nutrient solution containing NaHCO 3, the higher the NaHCO 3 concentration. The smaller the seedling height was, the lighter the seedling weight was. However, the solution with 0.2% concentration could promote the seedling root growth, Than the rise. The seedlings of a pair of true leaves were more resistant to NaHCO 3 than seedlings of 2 true leaves.