当前我国正在对主要果树树种建立原始材料圃或种质资源圃,对一些新选育成或引进的品种进行品种比较试验或区域试验。这了基础工作是长期的又是很烦琐的;但是试验设计如缺乏周密考虑,往往给今后的统计分析造成困难,过去对原始材料圃多用顺序排列,或随机区组设计,这两种方法有的? At present, China is establishing a raw material nursery or germplasm resource nursery for the main fruit tree species, and conducting comparative test or regional experiment on some newly selected or introduced varieties. This basic work is long-term and cumbersome; however, the lack of careful consideration of experimental design often gives rise to difficulties in future statistical analysis. In the past, the original materials were arranged in order or randomized blocks, of?