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中文摘要：
宽叶蒿为根茎型菊科的无性系植物。采用单位面积挖掘取样，对松嫩平原杂类草草甸宽叶蒿无性系种群进行了结构和生产力分析。结果表明，在花期和乳熟期，宽叶蒿营养分株构件均由4个龄级组成，生殖分株构件均由3个龄级组成。2个生育期营养分株构件均以1龄级的数量最多，随着龄级的增加呈减少趋势，均呈增长型年龄结构；生殖分株构件均以2龄级的数量最多，呈稳定型年龄结构。2个生育期种群的生物量均属于稳定型年龄结构。在种群的物质生产上．生殖分株构件的贡献力一直较大，并且随着生育期的延续，其贡献力呈增强趋势。乳熟期各龄级物质生产对种群的贡献力为2龄级〉1龄级〉3龄级〉4龄级。不同生育期宽叶蒿无性系种群单个分株生产力均以老龄级最大。在松嫩平原杂类草草甸，宽叶蒿无性系分株主根及根颈的生活年限最多为5年。
英文摘要：
Arteraisia latifolia is a compositae, rhizomal, clonal plant. A. latifolia clonal populations were sampled in weedy meadows of the Songnen plains of China by digging up to investigate structures and productivities of ramet modules. Modules of vegetative ramets of the clonal population consisted of four age classes, while modules of reproductive ramets consisted of three age classes in the flowering and milk stages. The numbers of 1st age classes were highest in the modules of vegetative ramets and decreased with increasing age of classes and showed an expansive age structure. The 2nd age classes were most abundant in the modules of reproductive ramets, which presented a stable age structure in two growth stages. The biomass was stable in two growth stages. The capacity for contribution of modules of reproductive ramets was more at all times, and tended to buildup with the continuation of growth stages in the dry matter production of the population. The capacity for contribution of the modules of every age class of population was 2nd 〉 1st 〉3rd 〉 4th in terms of dry matter production in the milk stage. The mean per ramet productivity of older age classes was the most in different growth stages. The taproots and crowns of the ramets survived for a maximum of five years in the weedy meadows of the Songnen Plains of China.
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