I. The characteristics of organic ecological soilless cultivation The organic ecological soilless culture technique refers to a soilless culture technique that uses a substrate without natural soil and uses a conventional nutrient solution to irrigate the plant root while using organic solid fertilizer and directly irrigating the crop with clean water. In addition to the advantages of organic soilless culture, the organic ecological soilless culture technology also has the following remarkable features. 1. Replace traditional nutrient solution with organic solid fertilizer The traditional soilless culture is the use of various inorganic nutrients formulated into a certain concentration of nutrient solution for the absorption and utilization of crops, while organic ecological soilless cultivation is the direct application of various solid forms of organic fertilizers and inorganic fertilizers into a mixed matrix. As a nutrient base for supplying cultivated crops, the solid fertilizer can be applied to the surface of the substrate directly in stages throughout the crop to maintain sufficient nutrient supply. 2 easy to operate, simple management The traditional soilless cultivation of nutrient solution, need to maintain a certain concentration of various nutrient elements and the balance between various elements, especially to pay attention to the effectiveness of trace elements, its technical requirements are high, difficult, and require specialized testing equipment, The organic ecological soilless cultivation due to the use of substrate cultivation and application of organic fertilizer, not only a variety of nutrient elements are complete, its trace elements are more balanced supply, ease of operation and management. 3. Wide range of sources and low costs The source of matrix materials required for organic ecological soilless cultivation is very wide, and various crop straws and organic fertilizers are mainly used. Compared with traditional soilless cultivation, the cost of fertilizers is reduced by 60% to 80%, and the matrix can be used continuously for about 3 years. This greatly saves the cost of soilless cultivation. At the same time, it can also save farmland and build a shed without the impact of farmland conditions. 4. The product quality is excellent, can reach the standard of green food Traditional soilless cultivation using high-concentration brine will cause pollution to the environment, while organic ecological soilless cultivation will not cause any pollution to the environment. Organic ecological soilless cultivation from the cultivation of the substrate to the use of fertilizers are mainly organic matter, in the process of decomposition and release, there will not be excessive harmful inorganic salts, while soil-transmitted diseases are greatly reduced, the use of pesticides is reduced to a minimum , which can produce "AA" grade green products. Second, organic ecological soilless cultivation techniques 1. Preparation of cultivation substrate The straw, distillers' grains, sawdust, bark, shavings, etc. of the crop can be selected, and the diameter of the straw after the pulverization is not more than 3 mm, and the urea or ammonium nitrate is dissolved. Vitamin B1 Hcl,Vitamin D3 Oil,Vitamin D3 Powder,Bulk Vitamin E Powder Ningbo Nutrition Food Technology Co.,ltd. , https://www.collagenworkshop.com