| 胶园六点始叶螨Iwao序贯抽样技术 |
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| 引用本文： | 蔡笃程,邬国良.胶园六点始叶螨Iwao序贯抽样技术[J].植物保护,2008,34(5):143-145. |
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| 作者姓名： | 蔡笃程 邬国良 |
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| 作者单位： | 海南大学环境与植物保护学院,儋州,571737 |
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| 摘 要： | 介绍六点始叶螨(Eotetranychus sexmaculatus Riley)Iwao序贯抽样方案的设计和在田间调查中的应用。六点始叶螨的Iwao序贯抽样公式的上限T1=5n+1.64(5×(0.135+1)×5+(1.375-1)×52])(1/2)、下限T0=5n-1.64(5×(0.135+1)×5+(1.375-1)×52])(1/2)。在相同的置信水准下,序贯抽取的样本含量明显比常规抽样的少。
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| 关 键 词： | 六点始叶螨 Iwao序贯抽样 橡胶树 |
Sequential sampling technique for Eotetranychus sexmaculatus on rubber trees |
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| Cai Ducheng;Wu Guoliang.Sequential sampling technique for Eotetranychus sexmaculatus on rubber trees[J].Plant Protection,2008,34(5):143-145. |
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| Authors: | Cai Ducheng;Wu Guoliang |
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| Institution: | College of Environment and Plant Protection, Hainan University, Danzhou 571737, China |
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| Abstract: | For effective investigation of Eotetranychus sexmaculatus Riley on rubber trees,the design and application of Iwao's sequential sampling technique were provided. The upper limit of Iwao's sequential sampling formula was determined to be T1=5n+1.64(5×(0.135+1)×5+(1.375-1)×52])(1/2),and the lower limit T0=5n-1.64(5×(0.135+1)×5+(1.375-1)×52])(1/2). The sample size for sequential sampling is significantly smaller than that of regular sampling for the same confidence level. |
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| Keywords: | Eotetranychus sexmaculatus Iwao's sequential sampling rubber trees |
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