以病样方率、平均样方病株数、扩散系数和聚块性指标等多数分析了番木瓜环斑病病株的田间分布类型，并利用模糊聚类方法初步探讨了此病的流行特征。结果表明病株在田间的分布随着时间的发展而变化。在流行初期，病株呈随机分布，随后呈聚集分布，到后期则趋于均匀分布。 The field distribution patterns of papaya ringspot were analyzed with the prevalence of disease samples, the number of average quadrats, the diffusion coefficient and the bulkiness index. The epidemiological characteristics of the disease were preliminarily analyzed by fuzzy clustering method. The results showed that the distribution of diseased plants in the field varied with time. In the early stage of epidemic, the diseased plants were randomly distributed, followed by aggregated distribution, and then tended to be evenly distributed in the late stage.