论文部分内容阅读
一、化学刺激素——硫酸软膏现在美国普遍使用的化学刺激素——硫酸液,可以刺激松脂的流速和延长流脂时间,可使松脂产量比过去增加1倍,并因为割沟浅而少,不致严重损害树木。因此,多年来硫酸液一直被视为一种很好的刺激素。其缺点是,酸液常常烧伤工人的皮肤,损坏衣服和工具,腐蚀金属受脂器和导管,并使天然松脂易受污染而降低质量。美国弗罗里达和亚拉巴马州的两个林业试验站的工作人员研究和发明了应用硫酸软膏进行机械化采脂的新方法。这种软膏使用安全、
First, the chemical stimulating hormone - sulfuric acid ointment Now the United States commonly used chemical stimulating hormone - sulfuric acid solution, can stimulate the turpentine flow rate and extend the flow of fat, can make rosin yield doubled than in the past, and because of cutting shallow and less , Will not cause serious damage to the trees. Therefore, sulfuric acid has been considered as a good stimulant for many years. The disadvantage is that acid often burns workers’ skins, destroys clothing and tools, corrodes metal grease receivers and conduits, and makes natural rosin susceptible to contamination and degrading quality. Staff at two forestry pilot stations in Florida and Alabama in the United States studied and invented a new method of applying mechanized liposuction with sulfuric acid ointment. This ointment is safe to use,