Hydroponics is still in its infancy in China. It can be divided into two categories: static hydroponics and dynamic hydroponics.

There are many ways of dynamic hydroponics, the most common one is pipeline hydroponics. It is better to use dynamic hydroponics when vegetables are cultivated without soil. Otherwise, crops will produce a lot of nitrite because of lack of oxygen, which is a harmful substance to human body. Pipeline hydroponics is mainly composed of cultivation tank, nutrient solution tank and nutrient solution circulation system, which can realize timed automatic irrigation with high degree of automation, low labor intensity and simple structure.