广西植物
廣西植物
엄서식물
GUIHAIA
2014年
1期
27-34
,共8页
齐锦秋%郝建锋%谢九龙%吴秉岭%罗浩
齊錦鞦%郝建鋒%謝九龍%吳秉嶺%囉浩
제금추%학건봉%사구룡%오병령%라호
水杉%年轮宽度%晚材率%管胞长度%管胞壁厚
水杉%年輪寬度%晚材率%管胞長度%管胞壁厚
수삼%년륜관도%만재솔%관포장도%관포벽후
Metasequoia glyptostrobides%growth ring width%latewood ratio%tracheid length%tracheid cell wall thickness
采用木材切片法和光学显微技术,研究了四川省雅安市中里地区水杉木材年轮宽度和管胞的长度、壁厚、腔径等指标的径向变异.结果表明：(1)年轮宽度在髓心至第10年先迅速增加,然后呈下降趋势,速生期约15 a,晚材率低；(2)管胞长度随轮龄的增加而增大,13 a后增幅变缓,早材管胞长度小于晚材管胞,根据管胞长度判断实验水杉木材即将进入成熟期；(3)管胞宽度在轮龄10 a 前增长迅速,幅度明显减慢,管胞宽度44．6μm,壁厚7．23μm,腔径37．48μm,早、晚材间管胞宽度、壁厚、腔径差异显著；(4)管胞长宽比95．4、壁腔比0．27、腔径比0．82,水杉木材是优良的造纸原料.
採用木材切片法和光學顯微技術,研究瞭四川省雅安市中裏地區水杉木材年輪寬度和管胞的長度、壁厚、腔徑等指標的徑嚮變異.結果錶明：(1)年輪寬度在髓心至第10年先迅速增加,然後呈下降趨勢,速生期約15 a,晚材率低；(2)管胞長度隨輪齡的增加而增大,13 a後增幅變緩,早材管胞長度小于晚材管胞,根據管胞長度判斷實驗水杉木材即將進入成熟期；(3)管胞寬度在輪齡10 a 前增長迅速,幅度明顯減慢,管胞寬度44．6μm,壁厚7．23μm,腔徑37．48μm,早、晚材間管胞寬度、壁厚、腔徑差異顯著；(4)管胞長寬比95．4、壁腔比0．27、腔徑比0．82,水杉木材是優良的造紙原料.
채용목재절편법화광학현미기술,연구료사천성아안시중리지구수삼목재년륜관도화관포적장도、벽후、강경등지표적경향변이.결과표명：(1)년륜관도재수심지제10년선신속증가,연후정하강추세,속생기약15 a,만재솔저；(2)관포장도수륜령적증가이증대,13 a후증폭변완,조재관포장도소우만재관포,근거관포장도판단실험수삼목재즉장진입성숙기；(3)관포관도재륜령10 a 전증장신속,폭도명현감만,관포관도44．6μm,벽후7．23μm,강경37．48μm,조、만재간관포관도、벽후、강경차이현저；(4)관포장관비95．4、벽강비0．27、강경비0．82,수삼목재시우량적조지원료.
Radical variation in growth ring width and tracheid dimensions of Metasequoia glyptostrobides planted in Yaan,Sichuan were evaluated.The results were as follows:the growth ring width first increased from pith to 10-year old,then decreased,and the main wood formation period was 1 5 a.The tracheid length of late wood was longer than that of early wood,and the tracheid length increased with the growth age,then decreased after 1 3-year old.The deter-mined values for tracheid width,cell wall thickness,and lumen diameter were 44.6,7.23,37.48μm,respectively,and significant difference in these index were found between early and late wood.Length to width ration(L/W),cell wall thickness to lumen diameter(2T/D),and lumen diameter to width(L/W)was 95.40,0.27 and 0.82,respectively.The results obtained in this study indicated that M.glyptostrobides wood was available for pulping.
