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本文阐述东北次生林水曲柳、胡桃楸、柞木、白桦、糠椴、小叶杨等六种木材下列项目的测定与研究:1.生材含水率;2.新伐材pH值与存放时间的关系;3.木材的pH值及其在树干上的分布;4.木材的总游离酸。 次生林是由原始林经过人为和自然因子的多次反复作用以后所形成的一种森林类型。我国次生林的面积分布很广,约占森林总面积的64％,因此全面了解次生林木材的某些性质对国民经济建设和木材加工工艺均有着重要的意义。 生材含水率(绝对含水率)是指新伐材中水分的重量与木材绝干重量的百分率。生材含水率的数值在木材加工企业设计、成材及单板干燥以及木材运输等方面均是重要的
This paper describes the determination and research of the following six kinds of woods: the secondary forest of northeast China, such as Ash, Juglans mandshurica, oak, Betula platyphylla, Tilia mandshurica, Populus simonii and so on. The moisture content of raw wood, the pH value and storage time Relationship; 3. Wood pH value and its distribution in the trunk; 4. The total free acid wood. The secondary forest is a kind of forest formed by repeated actions of the primitive forest and human and natural factors. The area of the secondary forest in our country is very wide, accounting for about 64% of the total forest area. Therefore, it is of great significance to fully understand some of the properties of the secondary forest to both the national economy and the wood processing technology. Raw material moisture content (absolute moisture content) refers to the moisture content of fresh cut wood and wood absolute dry weight percentage. The value of the moisture content of the raw material is important in the design of lumber processing enterprises, lumbering and veneer drying and timber transportation