Virus disease is one of the main diseases of rape cultivation in open field, especially in the spring and summer drought years, resulting in a significant reduction in production. The sweet pepper virus strain generally presents four symptoms of mosaic, yellowing, necrosis, and malformation. The virus source of sweet pepper in open field is dominated by cucumber mosaic virus (CMV); the incidence of tobacco mosaic virus (TMV) on sweet pepper is second only to cucumber mosaic virus; tobacco etching virus (TEV) on sweet pepper Although few, it can also cause viral diseases. There are many virus types (strains) in sweet pepper producing areas in China, and tobacco mosaic virus is the predominant species in the early growth period (spring), while cucumber mosaic virus is the dominant species in the middle and late growth stages (summer and autumn). Because Cucumber Mosaic Virus relies on wingworms to move and pass through the virus, the occurrence of aphids will cause a viral pandemic. The occurrence of aphids is closely related to meteorological conditions, and high temperature and drought are the key factors for the growth of aphids. Winged locusts in open ground pepper fields have generally increased since early June. If the drought is high after entering the summer, there will soon be peak migration of winged aphids. More than 20 days after that, it was the peak of viral disease. High temperature and dry weather are not conducive to the normal growth and development of common pepper, resulting in a decrease in its resistance to disease, which is conducive to the growth of maggots and immigrants. Aphids can be sprayed with 10% imidacloprid wettable powder 1500 times. At the beginning of the disease, 20% of the virus A400 times or 1.5% of the diseased disease emulsion 400 times can be used. Spray once in 7 days, generally need to spray 3 times. PE Coated Viscose,Soft PE Film,PE Coated Fabric,PE Film Coated Viscose,PE Laminated Viscose XINLE HUABAO MEDICAL PRODUCTS CO.,LTD. , https://www.golbaltravel.com