水培是一种新型的植物无土栽培方式，又名营养液培，其核心是将植物的根系直接浸润于营养液中，这种营养液能替代土壤，向植物提供水分、养分、氧气等生长因子，使植物能够正常生长。

Hydroponics is a new type of soilless cultivation of plants, also known as nutrient liquid culture. Its core is to directly infiltrate the root of the plant in the nutrient solution. This nutrient solution can replace the soil and provide water, nutrients, oxygen etc. to the plant. Growth factors enable plants to grow normally.