近代田间试验设计的种类很多,针对不同的具体情况和特定的试验要求,各自有其相应的、最经济有效的设计方法.但是所有设计都是从随机区组这一基本的设计发展演化而来,分析方法也大同小异.有些设计虽然从统计理论上讲,可以比较有效地控因地力差异所引起的试验误差,但是由于设计本身和分析方法过于复杂,往往不易为一般农业科学工作者所掌握,因此在实际工作中很 There are many kinds of modern field trial designs, each with its own corresponding, most economical and effective design method according to different situations and specific test requirements.But all the designs evolved from the basic design development of random block Although some designs can control the test error caused by the difference of geo-power more effectively in the theory of statistics, the design itself and the analysis method are too complicated and often not easy to be mastered by general agricultural scientists, So in practical work