Ecological soilless cultivation

Ecological substrate hydroponics is a new soilless cultivation technique that uses solid fertilizers instead of traditional nutrient solutions. It can fully utilize the abundant and low-cost renewable waste resources in the agricultural ecosystem, such as crop straw, mushroom residue, sawdust, Chinese medicinal residue, slag, sand, etc., as substrates. Harmless animal and poultry manure can be used as a source of fertilizer. This technique can effectively reduce the nitrate content in products and greatly improve the quality of agricultural products, meeting the fertilization standards for “green food” in China.