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菜蛾田间分布型及抽样方法的初步研究

The Spatial Pattern of Plutella xylostella and Basic Research of Sampling

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【作者】 周惟敏刘家骧支万元刘有存刘德前吴荣

【Author】 Zhou Weirain Liu Jiaxiang Zhi Wanyuan Liu Youcun Liu Deqian Wu Rong

【机构】 内蒙古自治区植保站太仆寺旗植保站清水河县植保站四子王旗植保站化德县植保站 呼和浩特010010呼和浩特010010

【摘要】 1988年、199O年我们在内蒙古自治区的四个旗县进行了油菜籽上菜蛾Plutellaxylostella(Linne)分布型调查.后采用Iσ、m/m、C、C_A、Taylor方法、Iwao方法进行分析,并对不同取样方法的精确度进行了比较.其结果是:菜蛾的卵、幼虫、蛹在油菜上均为聚集分布,其基本成份为个体群,基本成份的分布是聚集的,且有密度依赖性.不同取样方法中应采用单对角线20点取样,每点0.1111m~2(1尺~2),经正态独立性检验,其资料代换公式为log(x+k/2).

【Abstract】 An investigation of the spatial pattern of Plutella xylostella (Linne) on rape seed was made in four counties in the western part of Inner Mongolia in 1988 and 1990. Is,m*/m, C, CA,Taylor methods and Iwao’s m*-m method were adopted to analyze the findings, meanwhile a comparison of accuracy of different sampling methods was made. The results are as follows:( 1 ) The egg, lorva, chrysalis of Plutella xylostella on rape seed are distributed collectively, which basic components are individual masses, while the distribution of the individual masses are collective, and with dependence of density.( 2 ) 20 samples were taken along a single diagonal line in the different sampling methods, each sample covered 0.1111m2.( 3 ) Through the normal independent analysis, the formula of log (x+k/2) is found to fit the datums transformation.

【关键词】 菜蛾分布型抽样方法
【Key words】 Plutella xyloslellaSpatial patternSampling
  • 【文献出处】 华北农学报 ,Acta Agriculturae Boreali—Sinica , 编辑部邮箱 ,1991年04期
  • 【被引频次】3
  • 【下载频次】19
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