土壤是一个高度分散的系统,高度分散的体系以具有极高的表面能为其特在,土壤水处在这样一个力场的影响之下,部分的水分在土粒的外围形成了一种和普通水在物理性质上完全不同的束缚水。有关束缚水的性质,从本世纪的初期开始,曾经有Bouyoncos,Nitzch,等学者进行过很多的研究,通过他们的工作,使我们对束缚水的性质有了一些认识。束缚水具有 Soil is a highly dispersed system. Its highly dispersed system is characterized by its extremely high surface energy. Under the influence of such a force field, part of the water forms a Ordinary water in the physical properties of completely different bound water. Concerning the nature of irreducible water, there have been many studies conducted by scholars such as Bouyoncos, Nitzch, and others since the early part of this century. Through their work, we have made some acquaintance with the nature of irreducible water. Bound water has