土壤磁学是现代磁学与土壤学结合的产物,是土壤科学的一个新领域。主要是通过测定土壤的各项磁学性质,阐明它们在土壤形成过程中和人工培肥过程中的变化规律,研究作物高产栽培中的土壤——植株诊断技术,制定改革土壤磁场处理的最佳方案。 国外土壤学界对土壤磁性的研究表明,土壤磁性的强弱主要决定于其矿物组成,尤其是铁磁矿物的种类和数量。六十年代初期,Y.Matsaska和G.D.Shermanm用古依磁秤研究了美国夏威夷土壤的磁性,明确它主要是由土壤中的磁赤铁矿(α—Fe_2O_3)引起的,也包括由针 Soil magnetism is the product of the combination of modern magnetism and soil science, which is a new field of soil science. Mainly through the determination of the magnetic properties of the soil, to clarify their changes in the process of soil formation and artificial fertilization during the study of crop high-yielding soil-plant diagnosis techniques to develop the best soil magnetic field reform Program. The study of soil magnetism by foreign soil science shows that the strength of soil magnetism mainly depends on the mineral composition, especially the type and amount of ferromagnetic minerals. In the early 1960’s, Y.Matsaska and G.D. Shermanm studied the magnetism of the Hawaiian soil in the United States using paleomagnetic scales. It is clear that it is mainly caused by maghemite (α-Fe_2O_3) in the soil,