论文部分内容阅读
应用多元二次回归分析,建立了用电磁波测定壤土水分的数学模型。用电磁波四种不同衰减幅度来测定同一壤土水分所建立的四个数学模型,经显著性险验,均达极显著水平,用四个数学模型所测的壤土水分的残差均不超过±1.6。
Using multivariate quadratic regression analysis, a mathematical model for the determination of loam soil moisture with electromagnetic wave was established. The four mathematical models established by four different attenuation amplitudes of electromagnetic wave to determine the same loamy soil have significant level of significance after significant test. The residuals of loam soil measured by four mathematical models are all less than ± 1.6 .