When compared with single factor analysis of variance, covariance analysis reduced efficacy evaluation error resulting from uneven weed distribution in the field.
When compared with single factor analysis of variance, covariance analysis reduced efficacy evaluation error resulting from uneven weed distribution in the field.
结果表明，与按单因素试验方差分析相比，协方差分析方法可以减小因杂草田间分布不均匀而导致的调查误差。