本文通过对水稻穗瘟在田间聚集强度的研究表明,在水稻蜡熟期,病株在田间为聚集分布。分布的基本成分是个体群,个体群的分布是聚集的。当病株呈聚集分布时,田间病害调查采用“Z”字取样为宜。 In this paper, the research on the aggregative intensity of rice panicle blast in the field showed that during the ripening stage of rice, the diseased plants were aggregated in the field. The basic components of distribution are individual groups, the distribution of individual groups is aggregated. When the diseased plants are aggregated and distributed, it is advisable to use the “Z” word sampling to investigate the field diseases.