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首页> 外文期刊>Weed technology >A New Soil Sampler and Elutriator for Collecting and Extracting Weed Seeds from Soil
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A New Soil Sampler and Elutriator for Collecting and Extracting Weed Seeds from Soil

机译：用于从土壤中收集和提取杂草种子的新型土壤采样器和淘析器

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摘要

A soil sampler, elutriator, and associated sample flushing device were designed and constructed for an intensive study of weed seedbanks. This equipment was used in 1993 to collect and process 4980 soil samples. The sampler was durable, core size was consistent, and sampling was efficient. Cores were approximately 200 cm~3 and two people could take 120 cores/h. The elutriator separated weed seeds from 36 of these cores at a time. Washing required 60 to 75 min depending on soil texture. Seeds as small as 0.3 mm in diam were recovered and almost 100% of the seeds were recovered from samples spiked with barnyardgrass, redroot pigweed, velvetleaf, and witchgrass. The flushing device was used to transfer sample contents from strainers of the elutriator to propyltex bags for drying and storing. Equipment like this, plus improved technology for identifying and counting seeds, is needed to make weed seedbank studies more feasible.
机译：设计并构造了土壤采样器，淘析器和相关的样品冲洗装置，用于杂草种子库的深入研究。该设备于1993年用于收集和处理4980个土壤样品。采样器坚固耐用，核心尺寸一致，采样效率高。核心大约为200 cm〜3，两个人每小时可以吞下120个核心。淘析器一次将杂草种子从36个核心中分离出来。洗涤需要60至75分钟，具体取决于土壤质地。直径仅为0.3 mm的种子被回收，从bar草，紫根藜，草皮和金缕梅加标样品中回收了几乎100％的种子。冲洗装置用于将样品内容物从淘析器的过滤器转移到丙基纺丝袋中进行干燥和存储。需要这样的设备，再加上用于鉴定和计数种子的改良技术，才能使杂草种子库的研究更加可行。

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