| 白芍田蛴螬种羣空间分布与抽样技术研究 |
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| 引用本文： | 陈树仁,吴坚,吴振廷,王敬才,张传玉,王秀英,程新霞.白芍田蛴螬种羣空间分布与抽样技术研究[J].安徽农业大学学报,1989(2). |
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| 作者姓名： | 陈树仁 吴坚 吴振廷 王敬才 张传玉 王秀英 程新霞 |
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| 作者单位： | 安徽农学院
(陈树仁，吴坚，吴振廷)，安徽省亳州市植保站
(王敬才，张传玉，王秀英)，安徽省中药材公司(程新霞) |
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| 摘 要： | 蛴螬混合种群于白芍生长后期在田间呈聚集分布。进行X~2检验结果表明:当蛴螬虫口密度为2.5—8头/米~2时,符合负二项分布。本文还导出在不同置信度t、不同虫口密度(?)(头/株)和不同允许误差D下的理论抽样数n,对蛴螬混合种群在轻度发生(1头以下/米~2)、中度发生(2—3头/米~2)、严重发生(4—6头/米~2)和特大发生(6头以上/米~2)等不同情况下的序贯抽样模型也进行了推导。
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| 关 键 词： | 白芍 蛴螬 空间分布型 种群抽样 |
STUDIES ON SAMPLING TECHNIQUE AND SPATIAL DISTRIBUTION OF WHITE GRUB POPULATIONS IN FIELDS OF COMMON PEONY, PAEONIA LACTIFLORA PALL |
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| Chen Shure Wu Jian Wu Zhenting.STUDIES ON SAMPLING TECHNIQUE AND SPATIAL DISTRIBUTION OF WHITE GRUB POPULATIONS IN FIELDS OF COMMON PEONY, PAEONIA LACTIFLORA PALL[J].Journal of Anhui Agricultural University,1989(2). |
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| Authors: | Chen Shure Wu Jian Wu Zhenting |
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| Abstract: | The spatial distribution pattern of mixed populations of white grubs was aggregated at the late growing stage of Paeonia Lactiflora in the field. The further x~2-test indicates that 6 groups of experimental data all agree to negative binomial distribution. As a result, a model for theoretical sampling number is established, which differs with confidence degrees, insect population density and adoptable errors. Based on the sequential sampling method for negative binomial distribution, a sequential sampling model is concluded for the mixed white grub population at different population levels. |
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| Keywords: | Paeonia Lactiflora White grubs Population distribution Sampling technique |
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