Dryland agriculture is also called dry farming in China, and rain-fed agriculture or rain-fed agriculture abroad. In arid, semi-arid and semi-humid drought-prone areas with little precipitation and no irrigation conditions, agriculture mainly relies on natural precipitation and adopts a series of dry farming technical measures to develop dry crops or drought-resistant and drought-tolerant crops. It is a farming system that relies entirely on natural precipitation to engage in crop production in arid, semi-arid or semi-humid drought-prone areas.
Paddy field agriculture refers to the agriculture that mainly grows aquatic crops in areas with abundant rainfall, sufficient heat and sufficient irrigation water sources, using cultivated land with ridges that can often store water. Generally, rice cultivation is the main method, and the paddy-upland rotation mode is adopted. Paddy field agriculture in different regions is different due to climatic conditions and planting systems.