论文部分内容阅读
黑荆树(Acacia mearnsii)是含羞草科金合欢属常绿乔木,原产澳大利亚,五十年代开始引入我国,现已有成林面积约一万余亩,主要分布在广东、广西、云南、福建、浙江、湖南、江西、四川、贵州等省(区)。黑荆树皮含有丰富的单宁,是目前世界上最佳单宁植物资源,它制的栲胶品质最优,在世界市场上享有极高声誉和具有强大的竞争力。黑荆树木材也是极好的制浆原料,深受造纸工业的欢迎。为了探索不同年龄黑荆树皮单宁含量及树体养分的动态变化,以便确定采剥黑荆树皮的最佳年龄,使获得产量高、质量优的栲胶产品。我们曾在广西省宜山、武鸣,湖南省龙山、零陵、会同等五个地方的黑荆树引种区进行调查及采样分析,现将结果分述如下。
Acacia mearnsii is an evergreen tree of Acacia mearnsii. It was native to Australia and was introduced into our country in the 1950s. There are now about 10,000 acres of forest area, mainly distributed in Guangdong, Guangxi, Yunnan, Fujian, Zhejiang, Hunan, Jiangxi, Sichuan, Guizhou and other provinces (regions). Black jin bark is rich in tannin and is the best tannin plant resource in the world. It has the best quality of tannin and enjoys a very high reputation in the world market and a strong competitive edge. Black Wattle wood is also an excellent pulping raw material, welcomed by the paper industry. In order to explore the dynamic changes of tannin content and tree body nutrients of black bark at different ages in order to determine the optimum age for stripping black bark, the high yield and high quality of tannin products were obtained. We have conducted surveys and sampling analyzes in the introduced areas of Acacia cusia, in Yi mountain, Wuming county, Hunan province, Longshan county, Lingling county and the same places. The results are as follows.