一、制备粘质致密土壤薄片的困难和存在问题粘质致密土壤由于土壤颗粒细、土体致密紧实、孔隙极少而小,故在制备土壤薄片时首先碰到的问题是浸渍剂不易充分浸透土样,从而给下一步的磨片操作带来一系列的困难,甚至不能制片。尽管过去对如何制备粘质致密土壤的薄片作过种种尝试和改进,但 First, the preparation of clay dense soil sheet difficulties and problems Clay dense soil due to fine soil particles, dense soil compaction, very small and small pores, so the preparation of the first encounter when the soil sheet is difficult to fully impregnating agent Soaked in soil samples, which will bring a series of difficulties to the next grinding operation, and can not even produce films. In the past, various attempts and improvements have been made in how to prepare thin sheets of clay dense soil