摘要
通过落调查和培实验对外来入侵物阔叶丰花生长和繁特性进行研究.结果表明:阔叶丰花在原产地为多年生物,但在温州表现为一年生物;阔叶丰花具有生长期和花果期长且果实边熟边脱落特性;阔叶丰花单株结实量平均为723粒种,单位积种产量可达50 794粒/m2;阔叶丰花密度对分枝长度、分枝节数、茎结实量有显影响,并且负相关;光照强度对阔叶丰花分枝长度、分枝节数、分枝结实量有显影响,表明其为阳生物.上所述,阔叶丰花是一种适应性强、结实量大、具R-对策生存策略阳生,具有很高入侵潜力,应对此予以特别关注并加强防控管理.
The study examined the growth and reproductive characteristics of Spermacoce latifolia,an alien invasive plant through community investigation and cultivation experiments.The research results are as follows： spermacoce latifolia is a kind of perennial plant in its origin place,while acting as an annual plant in Wenzhou;spermacoce latifolia has a long growth,flowering and fruiting period with its fruit falling off as it ripens;the average number of bearing seeds for each Spermacoce latifolia is 723 and the seed production can reach to 50 794 / m2;the density of spermacoce latifolia has a negative correlation with its branches’ length,node number and the total fruiting output of branches;illumination intensity has an appreciable impact on branches’ length,node number and the total fruiting output of branches,showing that Spermacoce latifolia is a kind of heliophyte.In conclusion,Spermacoce latifolia is a kind of heliophyte weeds with strong adaptability,great fruiting output and R-survival strategy.Besides,it has got high invasive potential,which needs to be paid special attention to and also needs strict prevention and control management.
出处
《温州大学学报（自然科学版）》
2013年第2期29-35,共7页
Journal of Wenzhou University(Natural Science Edition)
基金
温州市科技计划项目(S2004A015)
温州大学学生科研项目(06xk136)
关键词
阔叶丰花
生长节律
繁特性
密度
光照
Spermacoce Latifolia
Growth Rhythm
Reproductive Characteristics
Density
Illumination.
