Abstract:

Lou soil is the major agricultural soil in Guanzhong region. The formation of Lou soil was influenced by farming activities such as cultivation, fertilization and irrigation, and every change of agricultural production technology would cause the change of the utilization mode and intensity of soil. Through the analysis of historical documents, the historical formation process of Guanzhong anthropogenic soil, and the interaction between agricultural technology change and soil evolution were studied in the paper. The results showed that since the beginning of primitive agriculture, the natural cognition of soil environment and crops had promoted the formation of early soil ploughing layer. With the extension and development of agricultural technology, the force applied to soil gradually increased, so that the human influence became an important element of soil formation and accelerated the formation of anthropogenic soil in Guanzhong. The ancient agricultural production technologies such as soil moisture conservation, fertilizer added with loess and basin irrigation were the main driving factors of agricultural soil formation.

Key words: Guanzhong Plain, Anthropogenic Soil, Formation, Historical Process