| 摘要: |
| 本研究根据Bayes统计原理，提出了作物品种区域试验中品种均值的Bayes估计方法，并利用一套包含4年，7个试点和10个棉花品种的多年多点试验对Bayes估值和算术平均值的预测精度进行比较，结果表明，Bayes估值和算术平均值的平均预测差分别为6．88％和12．77％，而且Bayes估值与验证值之间夺数值和品种排序上都有着更高的相关，相关系数分别达0．963和0．976，高于算术平均值的0．876和0．830，Bayes估值显示出比值算术平均值更高的预测精度。 |
| 关键词: 品种区域试验 Bayes估计 算术平均值 预测精度 品种均值 作物 |
| DOI： |
| 修订日期：2000-10-19 |
| 基金项目:国家自然科学基金资助项目! ( 30 0 70 4 33) |
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| Bayesian Estimation of Variety Means in Regional Crop Trials |
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| Abstract: |
| Based on the principle of Bayesian Statistics, a Bayesian method for estimating variety means in regional crop trials was proposed. A trial involving 4 years and 7 sites and 10 varieties of cotton was carried out and analyzed to compare the predictive accuracy of the Bayesian estimates and arithmetic means. It was found that the averaged predictive differences of Bayesian estimates and arithmetic means were 6.88% and 12.77% respectively; the coefficients of correlation between Bayesian estimates and validation data were 0.963 for values and 0.976 for variety ranks, higher than 0.876 and 0.830 of between arithmetic means and validation data. Bayesian estimates showed higher predictive accuracy than arithmetic means. |
| Key words: regional trial,Bayesian estimation,arithmetic mean,predictive accuracy |
