Viral disease is the main virus affecting the production of pepper in China, and it occurs widely everywhere. The incidence of pepper virus disease is high and spreads rapidly. Generally, the yield is reduced by about 30%, the severity is as high as 60% or more, and the virus disease becomes the main limiting factor for pepper production.
1 chemical control: In the early stage of the disease, 1.8% Aiduo water-receiving agent can be sprayed with 6000 times liquid to improve the disease resistance of the plant. Commonly used pesticides for chemical control include 20% virus A wettable powder 500 times liquid and 1.5% plant disease 800 times liquid. 10 days before planting, spraying 0.1% zinc sulfate solution after planting and slowing the fruiting period, there is also a certain disease prevention effect. The above medicines should be used in turn.
2 Selection of disease-resistant and disease-resistant varieties: such as Zhongjiao No. 2, Zhongjiao No. 5, and Sweet Miscellaneous No. 2.
3 Seed disinfection: first soak in water for 2 to 3 hours, then soak for 10 to 30 minutes with 10% trisodium phosphate solution, rinse with water and then germination and sowing.
4 cultivating strong seedlings: seedless plants, seedlings without diseased soil, suitable for sowing. In the seedling stage, timely use the 200-400 times solution of the acaricidal water to control the aphids.
5 Strengthen field management: In the early stage of the disease, the diseased plants are pulled out in time and destroyed outside the field. Apply sufficient organic fertilizer, increase the application of phosphorus and potassium fertilizer, improve the disease resistance of the plant itself, reduce the disease; rationally close planting, laying mulch film. Timely water supply in the early stage, timely soil release after watering, increase ground temperature, promote hair roots; pay attention to ventilation in the medium term, prevent prolonged, preserved flowers and preserve fruit .
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