| 螨虫样本变异系数、均值及由此组建的幂函数关系和抽样模型 |
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| 引用本文： | 赵利敏.螨虫样本变异系数、均值及由此组建的幂函数关系和抽样模型[J].四川动物,2012,31(3):411-415. |
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| 作者姓名： | 赵利敏 |
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| 作者单位： | 陕西理工学院生物科学与工程学院,陕西汉中,723001 |
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| 基金项目： | 国家留学基金中国-波兰教育交换计划，陕西省自然科学基金项目，陕西理工学院启动基金项目 |
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| 摘 要： | 通过对椴始叶螨Eotetranyehus tiliarium(Herm.)及其捕食性植绥螨样本数据的统计分析,作者建立和论证了样本变异系数与均值间的幂函数方程CV=a-bx.结果证明,这一方程是客观存在的,定量反映了变异性与均值间相互影响的统计规律性.当它与t分布概率值及相对精度D值组合时,就构成了抽样模型n=(t/D·a-bx)2;对于同类研究,这一模型具备理论意义与实用潜力.本文据此估算了椴始叶螨和植绥螨的最佳样本含量.
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| 关 键 词： | 椴始叶螨 植绥螨 变异系数 幂函数关系 抽样模型 |
Coefficient of Variation and Mean of Mite Samples, and the Power Relation and Sampling Model Established Wherefrom |
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| ZHAO Li-min.Coefficient of Variation and Mean of Mite Samples, and the Power Relation and Sampling Model Established Wherefrom[J].Sichuan Journal of Zoology,2012,31(3):411-415. |
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| Authors: | ZHAO Li-min |
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| Institution: | ZHAO Li-min (College of Bioscience and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi Province 723001, China) |
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| Abstract: | The samples of the linden spider mite, Eotetranychus tiliarium (Herm.), and its predatory phytoseiids were statistically analyzed, and the power relation as well as corresponding equations between the coefficients of variation (CV) and the means (x), CV=axb, were established and validated. The results indicated that the power equations existed objectively, and reflected quantitatively a statistical regularity of interactions between variability and mean. When combined with a t value from t-distribution and a D value for relative precision, a sampling model was formed, n=(t/D·axb)2, which possessed theoretical significance and actual application potentials for related studies. Based on it, the optimal sample units were estimated when taking the linden spider mite and phytoseiid samples. |
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| Keywords: | Eotetranychus tiliarium phytoseiids coefficient of variation power relation sampling model |
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