Salvia miltiorrhiza planting: how to control salvia miltiorrhiza leaf blight?

How to prevent and cure leaf blight of Salvia miltiorrhiza? What are the hazards of leaf blight? Please introduce the harm of Salvia miltiorrhiza leaf blight: Salvia miltiorrhiza leaf blight mainly harms the leaves of Salvia miltiorrhiza, the lower leaves of the plant first occur, and gradually spread upward, and brown and round spots appear on the leaf surface at the initial stage of the disease; after that, the disease spots continue to expand, and the center is grayish brown. Finally, the leaves scorched and the plants died, which seriously affected the yield of Salvia miltiorrhiza. Control methods of leaf blight of Salvia miltiorrhiza: 1. Select robust seeds and soak them in 1-100 Bordeaux solution for 10 minutes before sowing. 2. Increase the application of phosphorus and potassium fertilizer to enhance the plant resistance to end disease, open ditches and drainage in time after rain to reduce the humidity in the field. 3. Chemical control methods of Salvia miltiorrhiza leaf blight: at the initial stage of the disease, 50% carbendazim 600-fold solution, 65% Dysen zinc 600-fold solution or 50% Dysen zinc 500-fold solution were sprayed continuously for 2 times at intervals of 10 to 15 days. Click to get more planting techniques of Salvia miltiorrhiza