【摘要】 本文通过划分不完全区组，牺牲多因素试验中无关紧要的一些高级互作，增强局部控制作用，降低环境差异及试验条件的不均匀分配问题，提高试验的主效和一级互作研究精度更多还原

【Abstract】 The problems on heightening effect of partial controll and reducing environmental difference and bad distribution of the experimental conditions were studied according to dividing no complete plot combination and giving up some high grade cooperation of no importance in the many factorial experiments. That can increase the main effect of the experiment and the study precision of one grade cooperation.更多还原