渭北旱塬梯田土壤水分特征曲线的测定及分析

Determination and Analysis for Soil Water Characteristic Curve of Terrace on Weibei Rainfed Highland

采用压力仪法,在地埂花椒- 小麦- 苹果复合模式试验地内,分7 个不同压力,测定8个土层的土壤水分特征曲线,并将实验结果拟合为经验公式。结果表明:该经验公式其相关指数均在0.98 以上,具有较好的拟合效果。

Pressure meter method was applied in Chinese prickly ash wheat apple experimental field to determine soil water characteristic curve of eight soil layers under seven different pressures. The results were modeled into empirical formula. Correlation index of empirical formulae is over 0.98.