What are the hydroponic steps of white radish?

4. Temperature and humidity management Radish seeds can germinate at 2-3℃, and the optimum temperature for germination is 20-25℃. The seedlings can tolerate the low temperature of -2-3℃ and the high temperature of 25℃, and can grow well at 5-25℃, and the suitable growth temperature is 15-20℃. When the temperature is too high, radish seedlings are prone to mildew, and when the temperature is too low, radish seedlings grow slowly or even stop growing. The goal of temperature management is to control the ambient temperature within the appropriate temperature range of radish seedlings (15-20℃) and not exceed 5-25℃. In winter, the temperature is increased by heating insulation equipment, and in summer, the temperature is reduced by ventilation and shading. Radish seedlings are prone to mildew in high humidity (especially in high temperature season), so the humidity of the growing environment should be controlled below 70%, and the humidity should be reduced mainly by strengthening ventilation. 5. After water management sowing, water twice a day, and water once in rainy and snowy days as appropriate. Remove the paper covering the upper layer immediately after the cotyledons are unfolded. After the plant height is 3 cm, water nutrient solution. If old seeds are used for hydroponics, it is particularly important to pour nutrient solution later, otherwise radish seedlings will grow slowly and rot easily. The simple formula of nutrient solution is: a bucket of water (15 liter) plus 5 grams of urea and 7 grams of potassium dihydrogen phosphate. 6. The harvested cotyledons are fully developed, harvested in time when the true leaves are just produced, and are easy to rot after expiration. Under normal circumstances, hydroponic radish seedlings are sold as a whole, and the roots are cut off when eating.