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[目的]定量研究松嫩平原星星草无性系种群功能构件的生物量结构及功能构件间的关系。[方法]采用随机挖掘整个无性系分蘖丛的取样方法,对松嫩平原开花期星星草无性系各功能构件生物量与丛径、不同构件的生产与无性系生产的关系、无性系生殖株与其组分构件生物量的关系进行了定量分析。[结果]松嫩平原星星草无性系种群支持构件、有性生殖构件、光合构件生物量随丛径增大而呈线性增加(P<0.05);而营养繁殖构件生物量与丛径的线性相关性未达到显著水平(P>0.05),丛径对各功能构件生物量的制约程度为:支持构件>有性生殖构件>光合构件>营养繁殖构件;生殖株和营养株生物量随无性系全体构件生物量的增加均呈线性增加(P<0.05),而全体构件生物量与分蘖苗生物量的线性相关性未达到显著水平(P>0.05);生殖株茎、叶与花序生物量皆与生殖株生物量呈线性函数增长(P<0.05),茎、花序和叶生物量的积累按7:2:1比例形成。[结论]为丛生型无性植物生态的深入研究奠定了理论基础。
[Objective] The research aimed to quantitatively study the relationship between the biomass structure and the functional components of the functional components of the clonal populations of Asteroth grass in the Songnen Plains. [Method] With the method of random sampling of the entire clonal tillering cluster, the relationship between clonal biomass and climax of different functional components and the production of clonal clones was analyzed. The biomass of component components was quantitatively analyzed. [Result] The biomass of supporting members, sexual reproductive members and photosynthetic elements of the Clonalifera sinensis clonal population on the Songnen Plain increased linearly (P <0.05) with the increase of the bundle diameter. However, the linear correlation between the biomass of vegetative and reproductive members and the diameter of the bush (P> 0.05). The restraints on the biomass of each functional component were: restraining members> sexual reproductive members> photosynthetic members> vegetative propagating members; reproductive and vegetative biomass with the whole clones (P <0.05). However, the linear correlation between total biomass and tillering seedlings biomass did not reach significant level (P> 0.05). The biomass of stem, leaf and inflorescence of reproductive plants were The biomass of reproductive plants increased linearly (P <0.05), and the accumulation of stem, inflorescence and leaf biomass formed in a ratio of 7: 2: 1. [Conclusion] The study laid the theoretical foundation for the further study on the ecology of clumpy vegetative plants.