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第四节正交法喷灌田间试验成果的方差分析法在第三节中,已介绍了正交法喷灌田间试验成果的直观分析法。直观分析法简便容易,只要对试验结果作少量计算,通过综合的分析比较,便可找到最优组合方案。但直观分析不能估计试验过程中存在的误差大小,也就是说,不能区分某因素各水平所对应的试验结果间的差异究竟是由因素水平不同所引起的,还是由试验的误差所引起的,
Section IV ANOVA Method of Orthogonal Spraying Field Test Results In the third section, the direct analysis method of field test results of orthogonal sprinkler irrigation has been introduced. Intuitive analysis is simple and easy, as long as the test results for a small amount of calculation, through comprehensive analysis and comparison, you can find the optimal combination of programs. However, visual analysis can not estimate the size of the error during the test. That is, it can not be distinguished whether the difference between the test results corresponding to each level of a factor is caused by the difference of the factors or caused by the error of the experiment.