宁夏玉米主要区域试验的精确度分析

The Analysis of Experiment Precision of the Regions with Maize as a Major Grain in Ningxia

用2000—2010年宁夏玉米主要区域试验产量数据计算了试验误差变异系数和相对最小显著差数,分析试验的精确度。结果表明:试验的整体精确度较高,试验数据可信;针对个别试验点的试验精确度不高的情况,提出了通过加强试验技术培训、更新试验仪器设备、适当增加试点数和及时监督等措施提高试验精确度。

The experiment precision was studied on the coefficient of variation （CEV） and relative LSD （RLSD）, which were estimated by yield of the region with maize as a major grain in Ningxia from 2000 to 2010. The results showed that the experiment precision was very well, and the date was creditable, and some testing sites were not like this. Some very effective methods, such as training experimental technique, renewing the instrument, increasing the number of experiment sites, and regular supervision and inspection were suggested to improve the accuracy of experiments.