杠柳的生态生物学特性研究

目的 考察杠柳的生长发育变化、形态特征、群落结构及其种类组成等，明确各物候期的标志性特征，揭示生态环境对植物形态形成的影响。方法 通过分层抽样法，设置野生、栽培品的样地、样方，结合测量、记录、对比分析等方法，系统考察杠柳的生态生物学特性。结果 杠柳的物候期可划分为萌动期、展叶期、始花期、终花期、结果期、果实成熟期、落叶期、枯萎期；其植物形态呈藤本、灌木状、蔓性灌木状；藤本杠柳的植被类型为落叶阔叶林，群落各层片的优势种分别为大叶白蜡、牛迭肚、蓝萼香茶菜；蔓性灌木、灌木者为灌草丛植被型，荆条＋酸枣、鬼针草＋白莲蒿分别是群落各层片的优势种。结论 杠柳物候期各阶段的变化特征明显；植物形态多样性的形成与其生存环境密切相关，主要取决于气候因子和土壤因子，为进一步探索杠柳的生态生物学特性及其规范化培植提供科学依据。

Ecological and biological characteristics of Periploca sepium

Objective To study the changes in the growth and development, morphological characteristics, community structure and species composition of Periploca sepium Bunge to clear the phenological phase characteristics, reveal the impact on plant morphogensis by ecological environment. Methods Stratified sampling method and setting wild, cultivated plots, and quadrats together with the analysis of measuring, recording, contrast were used in this experimental program to study the ecological and biological characteristics systematically. Results The phenological phase of P. sepium could be divided into germination period, leaf expansion, flowering, final flowering, fruiting period, fruit ripening, defoliation, withering period; The plant morphology was fujimoto, shrubby, and trailing shrubby; The vegetation type of fujimoto P. sepium is deciduous broad-leaved forest, and the dominant species are Fraxinus rhynchophylla, Rubus crataegifolius, and Rabdosia japonica var. glaucocalyx; trailing shrubby and shrubby are shrub vegetation type, the dominant species are Vitex negundo var. heterophylla + Ziziphus jujuba var. spinosa, Bidens bipinnata + Artemisia sacrorum. Conclusion The change characteristics of the various stages of phenological phase are significantly; the plant morphological diversity is closely related to the living environment, especially climatic factors and soil factors, which provides a scientific basis for further exploring the ecological and biological characteristics and standardized cultivation.