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随机区组设计是将试验地分成几个区组,要求同一区组内各小区间土壤肥力相对一致,每个品种或处理在同一区组内出现一次,排列顺序是随机的。由于各区组内品种或处理出现的机会均等,因此可由区组间的产量变化分析出一个方向(区组间)的土壤差异,以减少一部分试验误差(区组内的土壤差异无法分析和消除),提高试验结果分析的精确性。例如采用随机区组法进行大豆
Randomized block design divides the experimental area into several block groups, requiring that the soil fertility in each small block in the same block group should be relatively consistent. Each variety or process occurs once within the same block group, and the order of arrangement is random. Due to the equal opportunity of variety or treatment within each group, soil differences in one direction (inter-group) can be analyzed by yield changes among the groups to reduce part of the experimental error (soil differences within the group can not be analyzed and eliminated) , Improve the accuracy of test results analysis. For example, a randomized block method for soybean