祁连山东端北麓甘肃瑞香野生资源调查和繁殖技术研究  

Wild Resources Investigation and Propagation Technology Research of Daphne tangutica in North Slope of Qilian Mountain Eastern End

作　　者：鲁国瑜 张万科 LU Guo-yu;ZHANG Wan-ke(Qilian Station of Gansu Qilianshan National Nature Reserve Management and Protection Center,Tianzhu,Gansu 733000)

机构地区：[1]甘肃祁连山国家级自然保护区管护中心祁连自然保护站,甘肃天祝733000

出　　处：《陕西林业科技》2024年第5期66-70,共5页Shaanxi Forest Science and Technology

摘　　要：为了有效保护祁连山东端北麓甘肃瑞香野生资源和实现人工栽培,调查了甘肃瑞香野生资源分布特征,研究了不同浓度ABT_(1)、ABT_(2)和NAA对插条成活率、扦插苗生长量和不同浓度GA 3对种子发芽率、实生苗生长量的影响。结果表明:(1)甘肃瑞香在祁连山东端北麓地区分布于海拔2000~3300 m的灌丛和草地,呈单株点状均匀分布,但较稀疏。(2)不同浓度生根剂处理插条后成活率和扦插苗生长量均高于对照,插条成活率均大于80%,0.2 mg·L^(-1)ABT_(1)处理的插条成活率高达92.49%,较对照(CK)清水处理提高了113.41%,差异达到极显著水平(P<0.01)。(3)不同浓度赤霉酸处理的种子发芽率和实生苗生长量均高于对照,但发芽率均低于23%,在生产中应用价值较低。甘肃瑞香硬枝用不同生根剂处理后,均提高了成活率和扦插苗生长量,但不同浓度生根剂间处理效果存在一定差异,综合比较插条成活率和扦插苗生长量指标枝数、枝长、根数和根长,认为0.2 mg·L^(-1)ABT_(1)的处理效果最佳,可在扦插育苗中优先应用。In order to protect availably wild resources and realize artificial cultivation of Daphne tangutica Maxim,the distribution characteristics of Daphne tangutica Maxim were investigated,and the effects of different concentration of ABT_(1),ABT_(2),NAA on survival rate and growth amount of cuttings,and different concentration of GA_(3) on germination rate and the growth amount of seedlings were studied.The result showed that 1)Daphne tangutica Maxim was located in shrubs and grassland at 2000 m~3300 m of north slope of Qilian Mountain eastern end,which showed single plant,punctuate and uniform distribution,but density was low.2)The survival rate and growth amount of cuttings were increased respectively after the cuttings were treated with different concentration of root agents,the survival rate was above 80%respectively,the survival rate of treatment 0.2 mg·L^(-1)ABT1 was up to 92.49%,increased by 113.41%than CK,the difference reached a very significant level(P<0.01).3)The germination rate and growth increment of seedlings were increased respectively after the seeds were treated with different concentration GA_(3),but the germination rate was under 23%,indicating low significance in practice.After treating the hardwood cuttings of Daphne tangutica with different rooting agents,both the survival rate and the growth of the cuttings were improved,though there were certain differences in the treatment effects among different concentrations of rooting agents.By comprehensively comparing the survival rate of cuttings and the growth indicators such as the number of branches,branch length,number of roots,and root length,it was concluded that the treatment with 0.2mg/L ABT1 had the best effect and could be preferentially applied in cutting propagation.

关 键 词：甘肃瑞香 野生资源 调查 人工栽培 繁殖 

分 类 号：Q949.761.1[生物学—植物学]