塿土是在自然褐土上,经人为长期耕作和大量施用土粪而形成的一种较肥沃的农业土壤。塿土具有良好的水分性质和蓄水性能。土壤水分的吸收和保持,水分在土壤中的运动和转化,是由于受到土壤中各种力的作用,使其具有不同能量水平所致。因此,近年来研究土壤水分性能,多用能量指标表示。它可以把土壤(Soil)——植物(plant)——大气(air)水分连续系统(contact),即spac,通过能量观点有机地联系起来,并且可以把土壤水分的能量指标(土壤水吸力) Soil is a more fertile agricultural soil formed on natural cinnamon soil by long-term farming and extensive application of soil manure. Earthen soil has good water properties and water storage properties. Soil moisture absorption and maintenance, water movement and transformation in the soil, due to the various forces in the soil, so that they have different energy levels. Therefore, in recent years, research on soil moisture performance, multi-energy indicators said. It can organically link soil-plant-air moisture, that is, spacs, through the energy perspective, and can map the energy index of soil moisture (soil water suction)