苔藓植物对急尖长苞冷杉种子萌发及幼苗数量的影响  

Effects of Bryophytes on Seed Germination and Seedling Numbers of Abies georgei var.smithii

作　　者：卓嘎巴永 董营 潘刚 王瑞红 Zhuogabayong;DONG Ying;PAN Gang;WANG Ruihong(Institute of Xizang Plateau Ecology,Xizang Agriculture and Animal Husbandry University,Key Laboratory of Forest Ecology of Xizang Plateau,Ministry of Education,National Forest Ecosystem Observation&Research Station of Nyingchi Xizang,Key Laboratory of Alpine Vegetation Ecological Security in Xizang,Nyingchi Xizang 860000,China)

机构地区：[1]西藏农牧学院高原生态研究所/西藏高原森林生态教育部重点实验室/西藏林芝高山森林生态系统国家野外科学观测研究站/西藏自治区高寒植被生态安全重点实验室,西藏林芝860000

出　　处：《种子》2024年第5期131-136,共6页Seed

基　　金：西藏自治区自然科学基金重点项目(XZ202301ZR0039G);西藏高原森林生态教育部重点实验室开放课题(XZA-JYBSYS-2023-22;XZA-JYBSYS-2023-03)。

摘　　要：为探究苔藓植物对冷杉种子萌发及幼苗生长的影响机制,通过野外调查和室内试验,分析了不同处理方式及不同等级苔藓植物厚度对急尖长苞冷杉种子萌发及幼苗数量的影响。野外调查结果表明,对照组种子数量>除去苔藓处理种子数量>除去苔藓并整地处理种子数量;天然更新幼苗数量表现为对照组>除去苔藓并整地处理>除去苔藓处理;苔藓厚度对种子萌发影响表现为Ⅰ级>Ⅱ级>Ⅲ级,对幼苗数量的影响表现为Ⅱ级>Ⅰ级>Ⅲ级。室内试验分析了不同处理方式下苔藓植物对急尖长苞冷杉种子发芽率、发芽势、发芽指数及冷杉幼苗生长的影响,结果表明,新鲜与烘干方式下的苔藓植物对冷杉种子的萌发有较为明显的抑制作用,但烘干状态下的影响较新鲜状态下要小。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 bryophyte 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 number 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 gradeⅠ>gradeⅡ>gradeⅢ,and the effect on seedling quantity was gradeⅡ>gradeⅠ>gradeⅢ.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 condition.

关 键 词：苔藓植物 急尖长苞冷杉 种子萌发 幼苗 

分 类 号：S791.14[农业科学—林木遗传育种]