Tomczak Karol, Mania Przemysław, Jakubowski Marcin, Tomczak Arkadiusz
Łukasiewicz Research Network, Poznań Institute of Technology, Center of Wood Technology, Winiarska 1, 60-654 Poznań, Poland.
Department of Forest Utilization, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71 A, 60-625 Poznań, Poland.
Materials (Basel). 2023 Mar 25;16(7):2615. doi: 10.3390/ma16072615.
The research on Paulownia cultivation and wood properties is up to date in many countries. However, there are no data on the properties of this wood defined on a microscale, on microtome samples. The main aim of this study was to find the best valorization path for the wood of Paulownia Shang Tong Hybrid F1 from an extensively cultivated plantation established in April 2017 in Poland by determining the tensile strength, the wood density, the strength-to-density ratio, and the modulus of elasticity on a cross-section of the trunk. The wood was collected from extensive plantation, where production is based on the natural resources of the habitat and ambient weather conditions, which is the opposite to the intensive cultivation model, which is the recommended model of Paulownia cultivation. The results of this study show that the mean density of the analyzed samples was approximately 210 kg/m when the mean value of the modulus of elasticity (MOE) was approximately 2400 MPa. The mean result for the tensile strength ratio to density was 11.25 km. In the case of anatomical structure, the increasing trend with age was noticed both in fiber and vessel characteristics. The study results provide unique data worldwide about Paulownia wood's properties based on a cross-section of the trunk, from plantations cultivated in conditions which are not recommended by seedlings producers. The obtained data indicate that the Paulownia wood (examined) from the cultivation in this study has a technical quality similar to that of model-intensive agricultural plantations.
许多国家都对泡桐种植和木材特性进行了最新研究。然而，对于这种木材在微观尺度上、切片样本上的特性却没有相关数据。本研究的主要目的是，通过测定2017年4月在波兰建立的大面积人工林中泡桐“上桐杂交F1号”木材在树干横截面上的拉伸强度、木材密度、强度与密度比以及弹性模量，找到其最佳增值途径。该木材取自大面积人工林，其生产基于栖息地的自然资源和环境气候条件，这与推荐的泡桐种植集约栽培模式相反。本研究结果表明，分析样本的平均密度约为210千克/立方米，弹性模量（MOE）的平均值约为2400兆帕。拉伸强度与密度的平均比值为11.25千米。在解剖结构方面，纤维和导管特征均呈现出随树龄增长的趋势。本研究结果提供了全球独一无二的数据，这些数据基于树干横截面，来自于在苗木生产商不推荐的条件下种植的人工林。所得数据表明，本研究中种植的泡桐木材（经检测）具有与集约型农业人工林模式相似的技术质量。
