What are the measures to prevent infectious diseases?

The preventive measures of infectious diseases include selecting disease-resistant grass seeds, using healthy and disease-free sowing materials, pretreating sowing materials, decomposing organic fertilizer, treating soil, rationally applying cultivation management measures, rationally rotating crops, intercropping, controlling weeds, reasonably selecting irrigation time, eradicating sporadic diseased plants, mowing as early as possible, sterilizing machinery and equipment, spraying immune fungicides, spraying protective fungicides, etc. The treatment of the disease is spraying therapeutic bactericide.