Soil water loss is an important component of the water balance in irrigated agriculture. This study investigated the effects of geotextiles on water loss during soil drying and cracking. The results indicate that the residual water content of soil samples increased by 98.5%, 145.5%, and 164.7% with geotextile masses per unit area of 100, 300, and 400 g/m², compared that of soil without geotextiles. There are two water loss stages of soil, the "rapid loss" and the "residual loss,” under the condition of bottom water loss, which is different from the evaporation stage of normal soil without bottom water loss. When a geotextile is added to the soil, the stages of bottom water loss will become "rapid loss, deceleration loss, and residual loss." When the mass per unit area of 400 g/m² geotextile was used, the crack ratio, probability entropy, and fractal dimensions decreased by 15.19%, 6.47%, and 5.81%, respectively. The geotextile mass per unit area increased the specific surface area of the soil, and water retention was improved. When the mass per unit area of the geotextile increased, the interface friction between the soil and geotextile increased, and the cracking of the soil was effectively inhibited.

土壤水分流失是灌溉农业水平衡的重要组成部分。本研究调查了土工织物对土壤干燥和开裂过程中失水的影响。结果表明，土工布单位面积质量为100、300、400 g/m 2 的土样，与^无土工布的土壤相比，残余水含量分别增加了98.5%、145.5%和164.7%。在底水失水的情况下，土壤存在“快速失水”和“残留失水”两个失水阶段，这与无底水失水的正常土壤的蒸发阶段不同。当土工布单位面积质量为400 g/m²时，裂缝率、概率熵和分形维数下降。分别提高了15.19%、6.47%和5.81%。土工布单位面积质量增加了土体的比表面积，保水性得到改善。当土工布单位面积质量增加时，土体之间的界面摩擦力增大。土体和土工布增加，土体开裂得到有效抑制。