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本文利用杉木人工林441块标准地，以及不同发病林分、林龄和感病级别的代表株树干解析的调查数据，应用生物统计分析方法，获得了杉木炭疽病对杉木生长影响的初步量化指标．杉木炭疽病对杉木生长的影响明显，尤以对径生长和村积生长影响显著。当病级达到Ⅲ级时，就已从各个方面对杉木造成严重危害，即已达到危害指标．同时，基本摸清了不同发病程度林分的病株增长数量规律，导出了病株分布频数，并以此开展林分损失率和损失量的估计．还对三明地区因杉木炭疽病所致的材积损失进行了估测．
In this paper, using the standard data of 441 Chinese fir plantations, as well as the survey data of the trunk of different representative stands of different stands, ages and susceptible levels, the preliminary quantitative indexes of the effects of Chinese fir anthracnose on the growth of Chinese fir were obtained by means of biometric analysis . The effect of Chinese fir anthracnose on the growth of Chinese fir was obvious, especially on the diameter growth and the plot growth. When the disease reached grade Ⅲ, it has caused serious harm to all aspects of Chinese fir, which has reached the hazard index. At the same time, we basically found out the law of growth of diseased plants with different disease severity, derived the distribution frequency of diseased plants and used them to estimate the loss rate and loss of forest. The volume loss caused by anthracnose in Chinese fir in Sanming district was also estimated.