田间试验中有效地检验处理间的差异取决于试验的精确度,而试验精确度又往往主要取决于重复次数.然而,当要检验的差异较小或试验误差较大时,所需要的重复数目也可能会多于条件容许的数目.这时,就必须寻找其他提高精确度的途径,例如改变小区大小或区组内小区数目等. Effectively verifying the differences between treatments in field trials depends on the accuracy of the test, which often depends on the number of repetitions, however, where the difference to be tested is small or the test error is large, the required number of repetitions It may be more than the number of conditions allowed.At this point, we must find other ways to improve accuracy, such as changing the size of the cell or the number of cells within the block.