我国幅员辽阔,各地地理特征的区别也比较大。川东褶皱带的各向斜中,广泛分布着一套以紫红色泥岩为主夹砂岩的地层,这就是常称的红层,川东大部分粮食产区都分布在这一红层里。因此,研究和摸清红层地下水的赋存特征,为农田灌溉和人畜用水提供更多的水源,是当前急需解决的问题之一。 My country has a vast territory, and the differences between the geographical features are also quite large. In the synclines of the eastern Sichuan fold belt, a set of formations dominated by purplish red mudstone sandstones are widely distributed. This is commonly known as the red layer. Most of the grain producing areas in eastern Sichuan are distributed in this red layer. Therefore, researching and investigating the occurrence characteristics of red groundwater and providing more water sources for farmland irrigation and human and livestock water supply are one of the most urgent problems to be solved.