수경재배, or hydroponics, is a method of growing plants without soil. Instead of using traditional soil, plants are cultivated in a nutrient-rich water solution. This technique allows for better control of nutrients and can lead to faster growth and higher yields. In 수경재배, various systems can be used, such as nutrient film technique (NFT) and deep water culture (DWC). This method is often employed in urban farming and greenhouses, making it possible to grow crops in limited spaces and under controlled conditions, which can be beneficial in areas with poor soil quality.