摘要
目的:分析石栽铁皮石斛种植区地质环境各优势因子,为仿野生石栽铁皮石斛种植的合理布局提供科学依据。方法:首先,采用苯酚-硫酸法测定不同基岩背景下铁皮石斛多糖质量分数;其次,野外概查地质环境宏观特征,用偏光显微镜剖析碳酸盐岩的显微结构特征,并用X射线粉晶衍射法分别分析碳酸盐岩和黑色石灰土中矿物组合面貌;最后,系统总结石栽铁皮石斛适生地质环境各优势因子。结果:(1)碎裂微晶灰岩和网脉状微晶藻灰岩基岩之上附生的铁皮石斛多糖含量显著高于微晶白云岩之上生长的铁皮石斛;(2)峰丛洼地次生林小气候提供了适宜的气候条件;(3)适生地层为三叠系中统个旧组第四段上亚段发育的碎裂微晶灰岩和网脉状微晶藻灰岩;(4)以苔藓植物为主的石面-石缝型小生境构成了一个生态微系统利于矿质养分储存和水分调节;(5)黑色石灰土中赋存的各种粘粒矿物提供了重要的矿质养分储备库。结论:碎裂微晶灰岩和网脉状微晶藻灰岩组合、黑色石灰土、石面-石缝型小生境以及峰丛洼地形成的次生林小气候,是喀斯特地区仿野生石栽铁皮石斛种植的适生地质环境。
Objective: To analyze the dominant factors of geological environment in Dendrobium officinale planted in stone growing area, so as to provide scientific basis for rational planting layout of Dendrobium officinale in imitating wild stone culture.Methods: Firstly, the phenol-sulfuric acid method was used to determine the content of polysaccharide in Dendrobium officinale under different geological environment.Secondly, the macro characteristics of geological environment were surveyed in the field, the microstructure characteristics of carbonate rock were analyzed by polarizing microscope, and the mineral assemblages in carbonate rock and black limestone soil were analyzed by X-ray powder diffraction.Finally, the dominant factors of the suitable geological environment in the Dendrobium officinale planting area were summarized systematically.Results:(1)The polysaccharide content of Dendrobium officinale grown on the bedrock of cataclastic microcrystalline limestone and reticulate microcrystalline algal limestone was significantly higher than that of Dendrobium officinale grown on microcrystalline dolomite.(2)The microclimate of secondary forest in peak cluster depression provided suitable climatic conditions.(3)The suitable strata were the cataclastic microcrystalline limestone and reticulate microcrystalline algal limestone developed in the upper part of the fourth member of the Middle Triassic Gejiu formation.(4)The stone surface-stone seam niche dominated by bryophytes constitutes an ecological microsystem, which was conducive to mineral nutrient storage and water regulation.(5)All kinds of clay minerals in black limestone provided an important reservoir for mineral nutrients needed for the growth of the Dendrobium officinale.Conclusion: The combination of cataclastic microcrystalline limestone and reticulate microcrystalline algal limestone, black calcareous soil, stone face stone crevice niche and secondary forest microclimate formed by peak cluster depression is the best suitable geological environment for imitative wild stone planting Dendrobium officinale in Karst area.
作者
杜光映
杨瑞东
何卫军
严福林
谢仁权
曾鉴
DU Guang-ying;YANG Rui-dong;HE Wei-jun;YAN Fu-lin;XIE Ren-quan;ZENG Jian(Guizhou University of Traditional Chinese Medicine,Guiyang 550025,China;Guizhou University,Guiyang 550025,China;Guizhou Geology and mineral Resources Development Co.,Ltd.,Guiyang 550025,China;Guizhou Shoucao Health Development Co.,Ltd.,Xingyi 562400,China)
出处
《中药材》
CAS
北大核心
2021年第4期780-786,共7页
Journal of Chinese Medicinal Materials
基金
贵州省科技计划项目(黔科合支撑[2020]4Y073号,黔科合支撑[2017]2955号)
贵州中医药大学博士启动项目([2020]05号)
关键词
铁皮石斛
多糖
地质环境
喀斯特地区
贵州
Dendrobium officinale Kimura et Migo
Polysaccharide
Geological environment
Karst area
Guizhou
