先从较为简单的竖向直根系出发，不考虑复杂形态的根系等问题，根土复合体可

Starting from the simpler vertical root system, without considering the complex shape of the root system and other issues, the root-soil complex can be represented by a single root-root-root "unit cell", as shown in Figure 2. The model assumes that the root system shows a unidirectional periodic distribution in the soil, ignoring the influence of a small amount of lateral roots (or fibrous roots), root epidermis, and fractal, and reduces the plant root system and soil into periodically distributed long fiber reinforced composite materials.

先从较为简单的竖向直根系出发，不考虑复杂形态的根系等问题，根土复合体可以由单根-根周土“单胞”表示，如图2所示。模型假定根系在土壤中呈单向周期性分布，忽略少量侧根（或须根）、根系表皮及分形影响，把植物根系和土壤简化成周期性分布的长纤维增强复合材料。

Starting from the simple vertical straight root system, without considering the complex root system and other problems, the root soil complex can be represented by a single root - the soil around the root "single cell", as shown in Figure 2. The model assumes that the roots are distributed periodically in one direction in the soil, neglecting the influence of a small number of lateral roots (or fibrous roots), root epidermis and fractal, and simplifies the plant roots and soil into long fiber reinforced composite materials with periodic distribution.