Effects of Bryophytes on Seed Germination and Seedling Numbers of Abies georgei var.smithii
In order to explore the mechanism of bryophyte effect on the seed germination and seedling growth of Abies georgei var.smithii,the effects of different treatment methods and different bryo-phyte thickness classes on the seed germination and seedling number of Abies georgei var.smithii were analyzed through field investigation and laboratory experiment.The results of field investigation showed that the number of seeds in control group was over the number of seeds treated with moss removal and more than the number of seeds treated with moss removal and soil preparation.The num-ber of natural regeneration seedlings was as follows:control group＞moss removal and preparation treatment＞moss removal treatment.The effect of moss thickness on seed germination was grade Ⅰ＞grade Ⅱ＞grade Ⅲ,and the effect on seedling quantity was grade Ⅱ＞grade Ⅰ＞grade Ⅲ.The effects of bryophytes on the germination rate,germination potential,germination index and seedling growth of Abies georgei var.smithii under different treatment methods were analyzed.The results showed that bryophytes under fresh and dried treatment had obvious inhibitory effect on the germination of Abies georgei var.smithii seeds,but the effect under dried condition was less than that under fresh condi-tion.
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