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根据对寒地稻田内水稻负泥虫幼虫及卵的调查，计算了5种聚集度指标，并进行了Iwao回归分析和Taylor幂的法则分析。结果表明：该虫幼虫及卵在田间均为聚集分布，聚集强度对种群密度具有依赖性；环境条件是引起虫体聚集的主要因素；幼虫在田间的分布单位为个体群，卵为单一个体。同时提出了理论抽样数的公式。
Based on the investigation of rice larvae and eggs in the cold paddy field, five kinds of aggregation indexes were calculated and analyzed by Iwao regression analysis and Taylor’s law. The results showed that the larvae and eggs of the larvae were aggregated and distributed in the field, and the aggregation intensity was dependent on the population densities. The environmental conditions were the main factors causing the larvae to aggregate. The distribution units of the larvae in the field were individual groups and the eggs were single individuals. At the same time, the theoretical formula of sampling number is proposed.