肯尼亚总统被提名授予1988年度的“树木人奖”

我国是世界上杨树面积最大的国家,同时有着悠久的栽培史。近十几年来,我国在杨树丰产林发展方面已取得令人瞩目的成就,即将进入定向培育的新阶段。在此形势下,18届国际杨树会议于1988年9月在北京召开。与会的五大洲24个国家的132位代表以极大兴趣进行了学术交流和实地考察。这次盛会带来了世界各国发展杨树的大量新信息,对我国杨树发展无疑将起到巨大推动作用。我们认为,透过这个窗口向国人介绍世界各国杨树发展概况和主要领域发展新动向,以及客观地分析我国杨树发展现状,是很有必要的。为此,我们邀请中国杨树委员会秘书长、中国林科院副研究员郑世锴、中国林科院研究员王恺、副研究员陈绪和、北京林业大学教授黄竞芳、副教授沈瑞详以及中国林科院情报所副编审丁蕴一等撰文在本期作专题介绍,以飨读者。

烧烫伤验方

药物组成:中国杨树穗(春季三月份杨穗落时采取)500克炒黑存性,冰片10克,地榆炭200克,黄连30克。制用法:将上药共为细面,放瓷瓶中储存备用。如烧伤局部渗出液多者,可先以0.1％新洁尔灭或生理盐水清洗创面后,以干粉撒患处;无渗出者,用香油或菜油调涂患处。每日二至三次。适应证:一、二度烧伤。

速生杨良种——山哈杨

该品种是由北方型美洲黑杨与南方型美洲黑杨通过切枝水培、人工远缘杂交、集团选择而培育成的新一代杨树优良品种。由于南北亲缘很远,其杂种优势明显。该品种速生丰产、窄冠、干形通直、材质好。

COMPARISON OF APMP PULP CHARACTERISTICS OF JUVENILE TRIPLOID CHINESE WHITE POPLAR IN SALINE SOIL WITH THAT OF NORMAL 5-YEAR POPLAR

In the paper, differences between the juvenile Triploid Chinese White Poplar (TCWP) in saline soil and 5-year TCWP in normal soil are compared in terms of their APMP-pulping properties. The results show that the saline planting environment does not show obvious effects on pulping properties of juvenile TCWP.

Use of Near Infrared Spectroscopy to Measure Mechanical Properties of Solid Wood

The visible and near infrared(NIR)(350-2500 nm)spectra and the MOE of 438 small clear wood samples from Chinese fir,eucalyptus and poplar 72 were measured.Using partial least-square(PLS)modeling,the NIR spectra could be used to predict MOE and MOR of the clear-wood samples from Chinese fir and eucalyptus solid wood.NIR spectra could only be used to predict MOE but not MOR of poplar clear-wood samples.With the exception of MOR of poplar clear-wood samples,the correlations between NIR and the mechanical properties are very strong,and the calibration and test correlation coefficients are both above 0.80.