草害是林木生长的大敌。目前我国主要是用人工和机械除草。国外六十年代用化学除莠剂抚育幼林取得良好效果。国内橡胶园用草甘膦进行林间除草早已获得了成功。我们于1980—1981年在大岗林场的幼林地内,采用茎叶、土壤处理剂,在不同立地条件,对药剂配方、施药技术和影响药效的因素等进行了试验研究,并取得了一定成效。一、试验地基本情况 Grass damage is the enemy of forest growth. At present, our country mainly uses artificial and mechanical weeding. Foreign 60s with chemical herbicides tending young to achieve good results. Domestic rubber plant with glyphosate forest weeding has long been successful. In 1980-1981 in Dagang forest farm in the young woodland, the use of stems and leaves, soil treatment agent, in different site conditions, the pharmaceutical formulation, application technology and the factors that affect the efficacy of the experimental study and achieved certain Effective. First, the basic situation of the pilot