近年 ,随着国民经济的迅速发展 ,水资源日益不能满足它的需要 ,常常引起农业用水大户与其他用户争水的矛盾。这在水资源匮乏的地区尤为突出。人们在寻找解决方案时 ,又重新涉及对水资源的认识问题 ,其焦点在于是否应把土壤水作为一种水资源看待。本文从土壤水的特性及其对植物的有效性出发进行探讨 ,提出了土壤水资源的评价系数 (C) ,希望有助于讨论的深入开展。 In recent years, with the rapid development of the national economy, water resources are increasingly unable to meet its needs and often cause conflicts between major agricultural users and other users. This is especially true in water-scarce areas. When people are looking for solutions, they are again revisiting their understanding of water resources, focusing on whether soil water should be treated as a water resource. In this paper, the characteristics of soil water and its effectiveness on plants are discussed, and the evaluation index (C) of soil water resources is put forward. Hopefully, this will be helpful for further discussion.