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首页> 外文期刊>Bioenergy research >Willow Yield Is Highly Dependent on Clone and Site
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Willow Yield Is Highly Dependent on Clone and Site

机译：杨柳产量高度依赖克隆和站点

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Use of high-yielding genotypes is one of the means to achieve high yield and profitability in willow (Salix spp.) short rotation coppice. This study investigated the performance of eight willow clones (Inger, Klara, Linnea, Resolution, Stina, Terra Nova, Tora, Tordis) on five Danish sites, differing considerably in soil type, climatic conditions and management. Compared to the best clone, the yield was up to 36 % lower for other clones across sites and up to 51 % lower within sites. Tordis was superior to other clones with dry matter yields between 5.2 and 10.2 Mg ha−1 year−1 during the first 3-year harvest rotation, and it consistently ranked as the highest yielding clone on four of the five sites and not significantly lower than the highest yielding clone on the fifth site. The ranking of the other clones was more dependent on site with significant interaction between clone and site. For instance, Tora obtained the same yield level as Tordis on two locations but significantly lower yield on the other sites. Dry matter content at harvest differed significantly among clones, ranging from 44.5 to 46.8 % across sites with highest level in Inger, Linnea, Resolution, and Tordis. Compared to the best site, yield level was up to 51 % lower on other sites across all clones, probably due to combined effects of differences in soil type, climate and management. Thus, willow yield depends both on the use of high-yielding clones and on the combined site effects of soil, climate, and management.
机译：高产基因型的使用是在短轮作柳树上实现高产和高收益的手段之一。这项研究调查了八个柳树无性系（英格，克拉拉，林尼阿，决议，Stina，特拉诺瓦，托拉，托迪斯）在五个丹麦地点的表现，它们在土壤类型，气候条件和管理上存在很大差异。与最佳克隆相比，跨站点的其他克隆的产率降低了36％，而在站点内部的产率降低了51％。 Tordis在头三年收获轮换期间的干物质产量在5.2和10.2 Mg ha-1年-1之间的其他克隆优于其他克隆，并且在五个地点中的四个地点始终被评为最高产量的克隆，且不显着低于第五个位点上产量最高的克隆。其他克隆的排名更多地取决于位点，并且克隆和位点之间存在显着的相互作用。例如，Tora在两个地点获得的收益水平与Tordis相同，但在其他地点则明显降低。克隆之间收获时的干物质含量差异显着，在英格，林内，分辨率和Tordis中含量最高的站点之间介于44.5％至46.8％之间。与最佳地点相比，所有克隆的其他地点的收成水平都降低了51％，这可能是由于土壤类型，气候和管理差异的综合影响。因此，柳树的产量不仅取决于高产无性系的使用，还取决于土壤，气候和管理措施的综合作用。

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