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本文阐明蛴螬混合种群在白芍田呈聚集分布,X~2检验表明,当田间虫口密度为2.5～8头/m~2时,符合负二项分布。以此计算出蛴螬不同发生程度下序贯抽样的接受线和拒绝线。
In this paper, the mixed populations of Emu owl were aggregated and distributed in the white peony. The X ~ 2 test showed that the negative binomial distribution was found when the population density was 2.5-8 / m ~ 2 in the field. In this way, the acceptance and rejection lines of sequential sampling under different occurrences of 蛴 螬 are calculated.