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作物学报 ›› 2014, Vol. 40 ›› Issue (11): 2052-2056.doi: 10.3724/SP.J.1006.2014.02052

• 研究简报 • 上一篇    

江苏省稻米重金属镉检测多级抽样最优试验方案的探讨

王伟1,3,宋雯2,尹双义1,徐辰武1,*   

  1. 1 扬州大学农学院生物统计与试验设计教研室，江苏扬州 225009；2 江苏省农业科学院食品质量安全与检测研究所，江苏南京 210014；3 河南科技学院生命科技学院，河南新乡 453003
  • 收稿日期:2014-04-03 修回日期:2014-09-16 出版日期:2014-11-12 网络出版日期:2014-10-01
  • 通讯作者: 徐辰武, E-mail: cwxu@yzu.edu.cn; Tel: 0514-87979358
  • 基金资助:

    本研究由江苏省高校“青蓝工程”科技创新团队和江苏省作物学优势学科项目资助。

Discussion of Multistage Sampling Optimum Test Plans on Rice Cadmium Detection for Jiangsu Province

WANG Wei1,3,SONG Wen2,YIN Shuang-Yi1,XU Chen-Wu1,*   

  1. 1 Group of Biostatistics and Experiment Design, College of Agriculture, Yangzhou University, Yangzhou 225009, China; 2 Institute of Food Safety and Inspection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; 3 Life Science and Technology College, Henan Institute of Science and Technology, Xinxiang 453003, China
  • Received:2014-04-03 Revised:2014-09-16 Published:2014-11-12 Published online:2014-10-01

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904

被引次数

2

摘要：

为了探讨江苏省稻米重金属镉检测多级抽样最佳试验方案，本文以一个三级抽样检测结果为例，经方差分析F检验，发现地市间和样点村间差异均极显著，各级误差方差以地市间最大。在此基础上，探讨了在一定精确度保证下的最优配置抽样方案。结果表明，为了提高调查的精确度，在经费许可的条件下可采用随机抽取6个地市，每个地市随机抽取20个样点村或农技推广站，每个样点村随机重复2次的抽样方案；若资金较为紧张，在保证当前精确度的基础上，亦可以采用随机抽取6个地市，每个地市随机抽取10个样点村或农技推广站，每个样点村随机重复2次的抽样方案。

关键词: 多级抽样, 稻米, 重金属, 最优方案

Abstract:

A three stage sampling survey as a real example was used to investigate the optimal plan of the sampling survey for cadmium in rice in Jiangsu Province. F-test showed that differences of the survey among cities and sampling villages were both very significant, and the error variance among cities was the largest in the experiment. In this paper, considering the survey expenses, the optimal sampling plan was explored under a certain accuracy. The results indicated that six cities were randomly sampled and twenty villages or agricultural extension stations were selected at random from each city, with twice sampling in each village in order to increase the precision of the survey. If there is a lack of funds, on the basis of ensuring the current sampling accuracy, we suggest that ten villages or agricultural extension stations from each city can be sampled alternatively.

Key words: Multistage sampling, Rice, Heavy metal, Optimal sampling plan

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