三、一年多点试验结果的方差分析 评定一个品种的应用价值,最主要的统计数是:品种主效,即一般配合力;品种与地点的互作效应,即特殊配合力。以上需在方差分析的基础上予以估计,只有主效大而互作小的品种,才能广为应用。这类品种在可预知或难以预知的环境变异下,能够通过其自身的调节,在较高水平上保持相对稳定,而在作大的品种则不太适应变化的生态条件,因此,不能广泛应用。今有一高粱品种(系)试验,v代表品种(系)数,同时在u个地点进行试验,设r个重复,随机区组排列,每小区面积15平方尺,其试验结果见表1. 表1.四个高粱品种(系)在三个试验点的结果: ANOVA analysis of multi-year test results To evaluate the application value of a variety, the most important statistics are: the main effect of varieties, namely the general combining ability; the interaction effect between varieties and places, that is, the special combining ability. Above need to be estimated on the basis of analysis of variance, only the main effect of large and small interaction of varieties, can be widely used. Under such unpredictable and unpredictable environmental variations, such varieties can be relatively stable at a relatively high level through their own regulation, while in larger varieties they are less adaptable to changing ecological conditions and therefore can not be widely used . Now there is a sorghum variety (line) test, v represents the number of varieties (lines), at the same time in u sites for testing, set r repeat, random block arrangement, each plot area of ​​15 square feet, the test results in Table 1. Table 1. Results of the four sorghum cultivars (lines) at three test sites: