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[目的]研究根茎型禾草巨序剪股颖种群构件的年龄结构。[方法]通过生长季末期单位面积取样的方法,对新疆伊犁河谷昭苏县境内2个生境的巨序剪股颖种群构件的组成及其年龄结构进行研究。[结果]2个样地的巨序剪股颖种群均由营养分蘖株组成,由4个龄级组成,且均呈增长型年龄结构;2个样地的根茎均为5个龄级,其中又以1和2龄根茎占绝对优势。在生长季末期,2个样地的巨序剪股颖潜在种群均由各龄冬性分蘖苗、根茎顶芽、根茎节间芽和各龄分蘖节芽组成,这些芽在潜在种群中占优势地位,各龄级芽又以1龄级的占显著优势,均属于增长型年龄结构。[结论]该研究反映出巨序剪股颖无性系的发展方向,也为该种牧草的栽培和管理提供了理论依据。
[Objective] The research aimed to study the age structure of the population of Scirpus mandshurica in the rhizomatous grass. [Method] By means of sampling per unit area at the end of the growth season, the composition and age structure of P. population in two habitats in Zhaosu County of Ili Valley, Xinjiang were studied. [Result] The P. maxima populations in two plots were all composed of nutrient tillers and consisted of 4 age classes, all of which showed an increasing age structure. The rhizomes of 2 plots were 5 age classes, of which And 1 and 2-year-old roots accounted for absolute advantage. At the end of the growing season, the potential population of Scirpus mandshurica in two plots consisted of winter tillers, rhizomes, rhizome internodes and tillering buds of all ages, which were dominant in potential populations Status, all age buds again to 1 age class accounted for significant advantages, are growth-type age structure. [Conclusion] The research reflected the direction of development of Scleractinia megacephala clones and provided the theoretical basis for the cultivation and management of this kind of grasses.