Spring cultured Huangqi epidemic prevention

In the case of low temperature and low light in spring, Scutellariae are susceptible to watery mildew. In addition to strengthening the light and raising the water temperature, 0.5 g/L salt and 0.4/L baking soda solution can be used as a control solution. Spilled. After onset, 0.3 mg/L methylene blue solution can be used to splash the whole pool. Once every 3 days, it can be cured 3 times.