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首页> 外文期刊>Journal of arid environments >Studies On The Soil Seed Bank Of The Environmental Weed rumex Vesicarius (fam.: Polygonaceae) At A Rehabilitated Mine Site In semi-arid Western Australia
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Studies On The Soil Seed Bank Of The Environmental Weed rumex Vesicarius (fam.: Polygonaceae) At A Rehabilitated Mine Site In semi-arid Western Australia

机译:在半干旱的西澳大利亚州的一个矿山改造后的环境杂草rumex Vesicarius(家族:Poly科)的土壤种子库研究

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摘要

Long-term control of the weed Rumex vesicarius (Fam.: Polygonaceae) (common name: Ruby Dock) in rehabilitated mine sites in semi-arid areas of Western Australia requires knowledge of the total size of the seed bank and its properties (longevity and germination of the seeds). Ruby Dock seeds are polymorphic (light and dark of various colour shades) and of high potential viability. At the Plutonic mine site near Meekatharra (Western Australia) areas heavily infested with Ruby Dock were characterised by large numbers of fruits, which contained numerous viable, dark seeds. Intact, light seeds were found in only a small percentage of the recovered fruits. Experiments in the greenhouse demonstrate that a large number of potentially viable Ruby Dock seeds remained in the soil after three germination seasons. A high proportion of the seeds, which germinated produced seedlings during the first germination season, soon after watering commenced. The application of herbicides at seedling stage, removal of fruit mats (which consist of large numbers of fruits intermingled with decaying plant material from previous seasons) and increase in competition through native plants currently appear to be the most efficient measures to control the size of the seed bank in rehabilitated mine sites.
机译:在西澳大利亚州半干旱地区经过修复的矿区中长期控制杂草Rumex vesicarius(家族:。科)(俗称:Ruby Dock)需要了解种子库的总大小及其性质(寿命和寿命)。种子发芽)。 Ruby Dock种子具有多态性(各种颜色的明暗),并且具有很高的潜力。在Meekatharra(西澳大利亚州)附近的Plutonic矿区,受红宝石码头感染严重的地区的特点是大量水果,其中包含许多可行的深色种子。完整的轻种子仅在回收的水果中占很小的比例。温室中的实验表明,三个发芽季节后,土壤中仍残留有大量潜在的可行的Ruby Dock种子。开始浇水后不久,在发芽的第一个发芽季节中发芽的种子中有很大比例的种子。目前,控制除草剂的最有效措施是在苗期施用除草剂,去除果垫(由前几个季节的腐烂植物材料混入大量水果组成)和增加对本地植物的竞争。恢复矿场中的种子库。

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