一、国内外油锯发展与应用概况及四川林用油据的现状。 自1941年德国制成世界上第一台油锯（3马力,80公斤）以来,仅七十二年时间,油锯不但在全世界得到了广泛的普及和应用,而且本身发生了很大的变化。尽管目前世界各国都在发展各种各样的“伐木联合机”,但由于林地条件的制约,油锯采伐量仍占机械采伐量的80％以上。各国使用的油锯有两大类型,苏联和我国以使用“高把油锯”为主,其他国家使用“短把油锯”。 First, the development and application of chain saws at home and abroad and Sichuan forest according to the status quo. Since Germany made the world’s first chain saw (3 horsepower, 80 kg) in 1941, the chain saw has not only gained worldwide popularity and application in only 72 years, but also has its own great Variety. Although all countries in the world are developing a variety of “logging combined machine”, but due to the constraints of woodland, sawing cuttings still accounted for more than 80% of mechanical harvesting. There are two types of chain saws that are used in various countries. The Soviet Union and our country mainly use “high chain saws”, while others use “short chain saws.”