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采用ＧＪ８９ 型粮虫陷阱检测器对房式仓小麦散装粮堆中书虱的分布进行了调查研究。结果表明由北向南书虱虫口密度逐渐增加，且南北之间差异显著；由东到西书虱虫口度也随之上升，东西之间差异显著，因此书虱的分布具有明显的差异性。书虱在垂直方向分布差异不显著，但随着深度的增加其密度逐渐减小。用聚集度各项指标检验表明，书虱在粮堆中呈聚集分布，且在粮堆下层聚集度最大。用频次分布检验，其上层分布是负二项分布，最大或然法估计得参数Ｋ＝ ０ ．９１３９（ Ｐ＜ ０ ．０１） ；其中层分布是核心分布（ Ｐ＜ ０ ．０１） ；下层分布是负二项分布，Ｋ＝ ０ ．７４２１（ Ｐ＜ ０ ．０１） 。用种群聚集的均数λ检验表明其聚集特性是由于书虱本身的聚集习性所引起的
GJ89-type worm trap detector was used to investigate the distribution of the tick lice in the bulk warehouse of bulk warehouse wheat. The results showed that the population density increased gradually from north to south, and the difference was significant between north and south. The mouth degree increased from east to west, and the difference between east and west was significant. Therefore, the distribution of lice was significantly different. The distribution of tick lice in the vertical direction is not significant, but its density decreases with depth. According to the indexes of aggregation degree, the ticks were aggregated in the grain piles and the largest in the lower layer of the grain piles. With the frequency distribution test, the upper distribution is a negative binomial distribution, the maximum likelihood method estimated parameter K = 0. 9139 (P <0 .01). The distribution of the middle layer was the core distribution (P <0 .01). The distribution of the lower layer was negative binomial distribution, K = 0. 7421 (P <0 .01). The mean λ test of population aggregation indicated that its aggregation characteristics were due to the aggregation habits of the ticks themselves