六種主要進口及省產木材之抗白蟻性

Termite-resistance of Six Major Imported and Domestic Woods in Taiwan

林天書(Tien-Shu Lin) ； 趙榮台(Jung-Tai Chao) ； 鄒哲宗(Che-Tsung Tsou)

《台灣林業科學》 11卷3期 (1996/09) Pp. 297-302

https://doi.org/10.7075/TJFS.199609.0297

摘要

Six major imported and domestic wood materials, i.e., American western hemlock, Chinese fir, Japanese fir, hard maple, red meranti and red oak, with Taiwan red pine as a control, were tested according to the method ASTM D 3345-74 to determine their natural resistance to the Formosan termite (Coptotermes formosanus), The results showed that the mortality of Formosan termites after feeding with different wood materials for 4 weeks was 71.28%±3.93% for red meranti, 43.65%±4.17% for red oak, 37.36%±2.89% for Japanese fir, 27.23%±2.49% for hard maple, 16.57%±2.34% for Chinese fir, and 8.58%±1.28% for American Western hemlock, respectively. Average weight loss for blocks of each kind of wood after the termites' feeding was 11.51% ±1.41% for red meranti, 43.65%±4.17% for red oak, 16.48%±1.28% for Japanese fir, 19.82%±2.59% for hard maple, 28.20% ±2.42% for Chinese fir, 29.26%±3.26% for American Western hemlock. Average damage index of each wood was 9.1 for red meranti, 8.8 for red oak, 4.8 for Japanese fir, 7.2 for hard maple, 3.8 for Chinese fir, and 0.5 American Western hemlock. Termite mortality was significantly correlated with the following parameters of the test wood blocks: weight loss (r=-0.87, p＜0.0l); damage index (r=0.85, p＜0.0l) specific gravity (r=0.61, p＜0.0l);and the amount of alcohol-benzene extract (r=0.91, p＜0.01). Among the 6 test specimens, red meranti had the best termite resistance, whereas American western hemlock was the least resistant, with the remaining species inbetween these two. The native Japanese fir had better termite resistance than the native Chinese fir.

關鍵字

木材 ； 白蟻 ； 抗性

並列摘要

Six major imported and domestic wood materials, i.e., American western hemlock, Chinese fir, Japanese fir, hard maple, red meranti and red oak, with Taiwan red pine as a control, were tested according to the method ASTM D 3345-74 to determine their natural resistance to the Formosan termite (Coptotermes formosanus), The results showed that the mortality of Formosan termites after feeding with different wood materials for 4 weeks was 71.28%±3.93% for red meranti, 43.65%±4.17% for red oak, 37.36%±2.89% for Japanese fir, 27.23%±2.49% for hard maple, 16.57%±2.34% for Chinese fir, and 8.58%±1.28% for American Western hemlock, respectively. Average weight loss for blocks of each kind of wood after the termites' feeding was 11.51% ±1.41% for red meranti, 43.65%±4.17% for red oak, 16.48%±1.28% for Japanese fir, 19.82%±2.59% for hard maple, 28.20% ±2.42% for Chinese fir, 29.26%±3.26% for American Western hemlock. Average damage index of each wood was 9.1 for red meranti, 8.8 for red oak, 4.8 for Japanese fir, 7.2 for hard maple, 3.8 for Chinese fir, and 0.5 American Western hemlock. Termite mortality was significantly correlated with the following parameters of the test wood blocks: weight loss (r=-0.87, p＜0.0l); damage index (r=0.85, p＜0.0l) specific gravity (r=0.61, p＜0.0l);and the amount of alcohol-benzene extract (r=0.91, p＜0.01). Among the 6 test specimens, red meranti had the best termite resistance, whereas American western hemlock was the least resistant, with the remaining species inbetween these two. The native Japanese fir had better termite resistance than the native Chinese fir.

並列關鍵字

wood ； termite ； resistance