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多年来,对地下种子资源利用及其人工促进更新效果问题众说不一。为了探讨种子落地后生命力持续的时间和如何抓住有利时机进行人工促进更新这一问题,笔者曾于1985、1986两年利用人工调制的兴安落叶松种子进行埋袋试验,经测试,林木种子在两年之内均无生命力。 为了进一步探讨林木种子生命延续的时间,发掘利用地下种子资源,有利于人工促进更新的进行,1987年又对林木自然落种的生命维持时间进行了大量的观察试验,实验结果证明,林木种子落地后,成熟的种子在适宜萌发的条件下,短期内丧失生命力,另一部分种子在一年后丧失生命力。为了更好地利用地下种子资源,促进森林更新,现将实验步骤和结果总结如下。
Over the years, the use of underground seed resources and artificial promotion of the effect of updating different. In order to explore the vitality of seeds after the lasted time and how to seize the favorable opportunity to promote the issue of artificial regeneration, the author once in 1985,1986 year using artificial modulation of Larix seeds to carry out burying bag test, after testing, forest seed in No vitality within two years. In order to further explore the seedling life extension time, to explore the use of underground seed resources, is conducive to artificial promotion of the update, in 1987 on the tree seedlings of natural life sustaining time a lot of observation and experiment, the experimental results show that the tree seed landing After mature seeds germinate under suitable conditions, the vitality of the short term, the other part of the seeds in a year after the loss of vitality. In order to make better use of underground seed resources and promote forest regeneration, the experimental steps and results are summarized as follows.