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试验做得愈准确,其结果愈可靠.田间试验,必须尽可能地注意各方面的一致性.如气候、土壤、播种、灌溉、施肥、收获、测产等,尽最避免不一致而造成误差(在统计上所指的误差是指在尽量要求一致情况下仍有不明的偶然因素而引起的差异,也叫机误).试验误差愈小,试验准确度愈高.田间试验中比较难以控制的误差是试验地土壤肥力的差异性.为了有效地控制试验误差,应该适用纯净一致与同一来源的种子,避免材料本身产生误差,并严格执行各项田间操作,正确细心地来观察、记载、整理与分析材料.除此,尚需采取以下三个步骤,(一)尽可能选择地力均匀一
The more accurate the test is, the more reliable the results. In field trials, the consistency of all aspects must be paid as much attention as possible (eg, climate, soil, seeding, irrigation, fertilization, harvesting, In statistical terms, the error refers to the difference caused by the accidental factors that are still unknown under the condition of consistency as much as possible, also called machine error.) The smaller the test error is, the higher the test accuracy is.Field control is more difficult to control The error is the difference of soil fertility in the test site.In order to effectively control the test error, the seeds of the same source and the same source should be applied to avoid the error of the material itself, and the strict implementation of the field operations, the correct and careful observation, record, finishing In addition to this, still need to take the following three steps, (a) as far as possible to choose a uniform force