摘要
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） 。
Population spatial distribution characteristics and pattem of Liposcelis spp. were determinded in a wheat bulk in a horizontal storage stored for 3 years with GJ89 Probe traps. Liposcelis.spp.occurred regularly in high numbers in the south, the west and the upper, and the numbers decreased gradually to the opposite direction. Among them,the numbers of the south was significantly higher than the oppisite, and the same as the west, but not for the upper. Application of mean crowed value and other methods revealed a clumped spatial distribution for this genus: the upper layer from 0 to 0.5m, was negative binomial distribution, K=0.9139(P<0.01); the middie layer , from 1.5 to 2.0m,was Neyman distribution (P<0,01);the bottom layer, from 3.0 to 3.5m,was negative binomial distribution, K=0.7421(P<0.01), Theresults indicated hat the clumped characteristic of Liposicelis.Spp. was due to their aggregated propensity.\;
出处
《郑州粮食学院学报》
1999年第3期16-18,共3页
Journal of Zhengzhou Institute of Technology
基金
国家自然科学基金
关键词
房式仓
书虱
分布
储粮害虫
horizontal storage
booklice
distribution
