本文应用了聚集度指标法研究马尾松赤枯病的空间分布型、研究结果表明其分布是聚集型，分布的基本成分是个体群，以聚集向外扩散。林间抽样方法比较结果，以五点团壮法取样精度较高，适用于苗圃病情调查。文中分析并计算了病害调查的最适抽样数，列出序贯抽样分析表。 In this paper, we used the degree of aggregation method to study the spatial distribution of Masson’s disease, and the results showed that the distribution was aggregated, and the basic components of the distribution were individual groups to spread outwards. Comparison of forest sampling methods, the five-point group Zhuang method higher sampling accuracy, suitable for nursery disease investigation. In this paper, we analyzed and calculated the optimal sampling number of disease survey, and listed the sequential sampling analysis table.