Soilless seedlings are also called nutrient solution seedlings, that is, without using soil, solid materials with good air permeability and water absorption, such as gravel, slag, and rice hulls, are used as substrates, and the method of spraying nutrient solution is used to meet the requirements of seedlings for nutrition and moisture. (1) Culture medium preparation Solanum seed sowing culture medium can be prepared with 90% perlite and 10% culture soil. Culture soil must be sterilized. (2) Sowing and Emergence The sprouting and sprouting are performed in the chamber (to seal the chamber), and the volume is generally 8 to 10 meters, and a multi-layer nursery tray is set in the room. (3) Greening and greening should be carried out in greening greenhouses with good insulation properties. When the seeds are sown, the seedling discs are transplanted in the afforestation room in a timely manner when the seedlings are newly emerged. After the seedlings are exposed to sunlight in the greening room, the color of the cotyledons turns green. In the greening period, the cotyledons of the seedlings are generally fully developed and greened. Tomato greening takes 6 days. (4) The seedlings are transplanted and transplanted in the transplanting seedlings. The types vary depending on the conditions. They can be carried out in greenhouses, hotbeds, plastic impregnation and plastic large and medium sheds. Disposable Umbilical Cord Care,One-Time Umbilical Cord Care,Sterile Umbilical Cord Care,Sterilized Disposable Umbilical Cord Care Henan Xianghe Medical Materials Co., Ltd. , https://www.xiangheweicai.com