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根据国外报道和我国多年来的试验研究,除草剂是开设防火线的一种新方法,它具有安全、省工、省时及成本低等优点。国外在五十年代就广泛应用除草剂开设林区防火线。1958年德意志民主共和国使用氯酸钾开设林区铁路防火线47.000公里;英国和北爱尔兰从五十年代后期以来,使用百草枯对防火线上的杂草进行喷洒,数天后杂草脱水干枯,即可用火烧除,建成防火线;瑞典和美国等曾用2,4-D和2,4,5-T酯类来杀灭灌木类。
According to foreign reports and many years of experimental researches in China, the herbicide is a new method of setting fire line. It has the advantages of safety, labor saving, time saving and low cost. Foreign countries in the fifties extensive use of herbicides to open forest fire line. In 1958, potassium chlorate was used by the German Democratic Republic to set up 47.000 kilometers of railroad fire line in the forest region; in the United Kingdom and Northern Ireland, paraquat was sprayed on fire-line weeds from the late 1950s, and after a few days the weeds dried to dryness, In addition, built fire line; Sweden and the United States had used 2,4-D and 2,4,5-T esters to kill shrubs.