Micro-topography Preparation and Its Application Prospect in Sloping Farmland of Southern Hilly Region

Soil water loss and seasonal drought on sloping farmland restrict the improvement of food production. Recent years, a technique named micro-topography preparation was developed and become the key to solve this problem. micro-topography preparation is an operation that numerous geometrically ordered surface depressions are formed by modifying soil surface micro-topography to collect and hold water in place during rainfall, and allowing it to infiltrate the soil. In this paper, the realization and operation mechanism of micro-topography preparation was described, the operational effectiveness in different parts of the world was evaluated, and different operating implements were illustrated. It was stated that micro-topographical preparation is an effective technique for both control water and soil erosion and improve water resource using efficiency. Characteristics of sloping farmland in Yunnan Province were analyzed. The application prospect of micro-topography preparation for Yunnan Province was discussed and prospected. It was considered that micro-topography preparation can efficiently utilize surface runoff of sloping farmland in Yunnan Province, and achieve the goal of control runoff and alleviate drought problem simultaneously.