在无土栽培中，基质的感化是固定和撑持作物；吸附营养液；加强根系的透气性。基质是十分主要的材料，直接关系栽培的成败。基质栽培时，必定要按上述几个方面严酷选择。
In soilless culture, the effect of substrate is to fix and support crops; Adsorb nutrient solution; Strengthen the permeability of roots. Substrate is a very important material, which is directly related to the success or failure of cultivation. Substrate cultivation must be strictly selected according to the above aspects.
北京农业大学园艺系经由过程1986－1987年的实验研究，在黄瓜基质栽培时，营养液与基质之间存在着显著的交互感化，互为影响又相互弥补。所以水培时的营养液配方，在基质栽培时，出格是利用有机基质时，会受基质自己元素成份含量、可代换水平等等身分的影响，而使配方的栽培结果发生转变，这是该当加以考虑的问题，不克不及生搬硬套。
Through the experimental research from 1986 to 1987, the Department of Horticulture of Beijing Agricultural University found that there was a significant interaction between nutrient solution and substrate, which affected and compensated each other. Therefore, the nutrient solution formula in hydroponic culture, especially when using organic substrate, will be affected by the element content, replaceable level and other factors of the substrate itself, which will change the cultivation results of the formula. This is a problem that should be considered and should not be applied mechanically.