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1974～1976年4～9月,在内蒙古锡林郭勒盟达乌尔黄鼠鼠疫自然疫源地定点监测时,捕活黄鼠3,448只,采集方形黄鼠蚤17,529匹,按寄生蚤指数季节变动进行统计学分析,计算出保证方形黄鼠蚤月与旬寄生蚤指数可信限的最小抽样量的参考数量表。该表既可用于根据调查所得的月与旬寄生蚤指数的估值与样本含量了解其数学可信限;也可用于根据预计的寄生蚤指数和所需的估计精度,设计抽样量。
From April to September 1974, during the fixed-point surveillance of the natural foci of Daurian ground squirrel plague in Xilinguole, Inner Mongolia, 3,448 sphynxes were caught, and 17,529 were collected, according to the seasonal variation of the parasitic flea index According to the analysis, the reference quantity table was calculated for the minimum sample size to ensure the credible limit of the square and square parasitoid flea index. The table can be used to understand the mathematical confidence limits based on the monthly and seasonal parasitic flea indices surveyed and the sample contents; it can also be used to design the sample size based on the expected parasitic flea index and the required accuracy of the estimates.