Siberian elm (Ulmus pumila) can be a good alternative for biomass production under dry conditions in the Mediterranean areas, particularly due to its resistance to graphiosis and the low water requirements. The aim of this study is to describe an experience in regard to the ability of Ulmus pumila for implantation and growth during the first vegetative period. The research was carried out in Soria, a province in Northern Spain, at an altitude of 1,000 m above sea level where climate is extreme continental. The soil of the parcels had low contents of organic matter and nutrients and the elms were established at two different plantation densities (3,333 plants/ha and 6,666 plants/ha), under rain-fed and two different irrigation conditions. When the dry weight was studied, significant differences were detected between irrigated and rain-fed conditions, however the Spacing in the first year of growth was not a limiting factor and the weight per plant in different plots was similar. A Mathematic model for relating the dry biomass weight with diameter and height was carried out and equations with R-squared between 92 - 94 % were obtained. The most outstanding analytical results were: Ash: 3.2%, Nitrogen: 1.17% and NCV: 18.04 MJ/kg dm.
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机译：西伯利亚榆树（UlmusPumila）可以是地中海地区干燥条件下的生物质生产的替代品，特别是由于其对石墨源的抵抗力和低水量要求。本研究的目的是描述在第一次营养期间UlmusPumila植入和生长的能力方面的经验。该研究在索拉，北北部省省，海拔1000米的海拔高度，气候是极端的大陆。包裹的土壤含量低，有机质和营养素的含量低，并且在雨喂养和两种不同的灌溉条件下，在两种不同的种植型密度（3,333株植物/公顷和6,666株植物/公顷）中建立了ELM。当研究干重时，在灌溉和雨水喂养条件下检测到显着差异，但是生长的第一年的间距不是限制因素，并且不同地块中的每株的重量相似。对具有直径和高度相关的干生物质重量的数学模型进行，并获得92-94％之间的r型的等式。最突出的分析结果是：灰分：3.2％，氮：1.17％和NCV：18.04 MJ / kg DM。
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