Commercial Greenhouse With Soilless Cultivation

Introduction :Substrate cultivation is a kind of soilless cultivation that has the biggest promotion area.It fixes the crops roots in organic or inorganic matrix,supply nutrient for crop through drip or trickle irrigation .Cultivation matrix can be loaded into plastic bag, or laid in cultivation groove or trough.Nutrient solution of substrate cultivation is not cycle,which can avoid disease spread through the cycle of nutrient solution.
Substrate cultivation has strong buffer ability, and there is no contradiction between moisture, nutrients, and oxygen supply.In addition, substrate cultivation has easy equipment, sometimes does not need any power, therefore, it is less investment, low cost, common application.
Hydroponics cultivation refers to plant roots directly in the nutrient solution without substrate cultivation.The most famous and common hydroponics is Nutrient Film Technique (NFT),its working principle:make a very thin layer of nutrient solution (0.5-1.0cm) cycle through the crop root, not only ensure continuous water and nutrient supply for crop, but also fresh oxygen supply for the root.Nft cultivation method greatly simplifies the irrigation technology, need not calculate crop water requirements everyday, and can ensure balanced nutrients supply.NFT cultivation method takes part roots from the soil, avoiding all sorts of soil borne disease, also no need for soil disinfection.