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为了探讨桑天牛危害对毛白杨材质的影响,对危害前后及不同危害程度的毛白杨材质进行了分析,主要测定了木材含水率、横纹抗压强度(径向、弦向)、热水抽出物及pH值。结果表明:毛白杨受桑天牛危害后,木材含水率相对增加17.7%,弦向和径向横纹抗压强度分别降低17.6%和22.7%,木材的热水抽出物及pH值分别增加62.6%和7.8%。健康材与危害材的各指标差异均达到极显著水平。
In order to investigate the harm of Morinda citrifolia to the material of Populus tomentosa, the materials of Populus tomentosa were analyzed before and after the harm and the different degrees of harm. The wood moisture content, compressive strength (radial, chord), hot water Extracts and pH. The results showed that the wood moisture content of Populus tomentosa increased by 17.7%, the chordal and radial crotch compressive strength decreased by 17.6% and 22.7% respectively, the hot water extract and pH of wood increased by 62.6% % And 7.8%. The differences between the indicators of health materials and hazardous materials reached the extremely significant level.