杉木的生长受着它本身的遗传特性、环境条件和经营措施的影响。在不同的环境条件下,杉木生长有很大的差异,因此掌握杉木生长与环境之间关系的规律,采取相应的营林措施,对促进杉木的速生丰产有重要意义。为此我们于一九七九年对我省黔东南锦屏地区进行了杉木立地类型划分的调查。以五十 The growth of fir is influenced by its own genetic characteristics, environmental conditions and management practices. Under different environmental conditions, there are great differences in the growth of Chinese fir. Therefore, mastering the law of the relationship between Chinese fir growth and environment and adopting appropriate measures of afforestation will be of great significance for promoting fast-growing and high yielding of Chinese fir. To this end, we conducted a survey on the site classification of fir sites in Jinping, southeastern Guizhou Province in 1979. Fifty