Pumpkin virus disease, seed disinfection can be soaked with 10% aqueous solution of trisodium phosphate for 10 to 15 minutes, washed after sowing, planting, with silver and black two-color plastic film cover (silver up) to avoid embarrassment. Before or at the beginning of the episode, use a 500-fold solution of the water-repellent agent and a virus K500 to 1000-fold to prevent the spray for 10 days. Spray 2 to 3 times.
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