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首页> 外文会议>Annual Conference of the New Zealand Plant Protection >Germination of seed from five broadleaf weeds after burial for up to 28 years in two soils
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Germination of seed from five broadleaf weeds after burial for up to 28 years in two soils

机译：在两种土壤中埋葬长达28年后，从五个阔叶杂草种子萌发

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摘要

Some herbaceous broadleaf weed species are major weeds of pastures and are difficult to manage with ongoing re-infestation from the persistent soil weed seedbank. In this study, seeds from five weed species were collected in 2009 from two sites wherethey had been buried at three depths since 1981. The species were Scotch thistle (Cirsium vulgare), Californian thistle (Cirsium arvense), nodding thistle (Carduus nutans), ragwort (Jacobaea vulgaris) and giant buttercup (Ranunculus acris). Very few of the seeds were viable after being buried for 28 years in a clay soil, while in a sandy soil seeds of the three thistle species remained viable when buried at 200 mm depth. It is estimated that these seeds may remain viable for up to 66 years.
机译：一些草本阔叶杂草种类是牧场的主要杂草，并且很难从持续的土壤杂草种子库进行持续的重新侵犯。在这项研究中，来自五种杂草物种的种子于2009年收集来自自1981年以来的三个深度的两个地点。该物种是苏格兰蓟（Cirsium Virgare），加州蓟（Cirsium Arvense），点头蓟（Carduus Nutans）， ragwort（雅各布菊属alugugaris）和巨型毛茛属植物（毛茛属acris）。在粘土土壤中埋藏28年后，很少有种子是可行的，而在埋在200毫米深度时，三种蓟种的沙地种子保持可行。据估计，这些种子可能保持可行，长达66岁。

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