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大椒是受群众欢迎的夏秋菜之一。近年来,由于病毒的危害,造成植株生长发育不良,矮缩、落叶、落花、落果及生长点坏死,产量逐年下降。1970年全市平均亩产4060斤,1978年亩产只有1762斤,严重地影响了首都市场的供应。据中国蔬菜所植保室研究报导:北京地区大椒病毒的毒源绝大多数为黄瓜花叶病毒,约占85.5%;其次为烟草花叶病毒,马铃薯Y病毒。北京郊区大椒种植面积约8000亩左右,病毒病发生面积占90%以上。发病率为60—90%,严重地块发病率为100%,亩产只有几百斤。
Pepper is popular among the masses of summer and autumn dishes. In recent years, due to the damage caused by the virus, resulting in poor plant growth and development, dwarfing, deciduous, falling flowers, fruit drop and the growth of necrosis, the output declines year by year. In 1970, the city averaged 4060 kg of mu per mu, only 1762 kg per mu in 1978, seriously affecting the supply in the capital market. According to the report of China Vegetable Institute Plant Protection Room, most of the source of Paprika virus in Beijing is cucumber mosaic virus, accounting for 85.5%, followed by tobacco mosaic virus and potato virus Y. Beijing suburbs pepper planting area of about 8,000 acres, the area of virus disease accounted for more than 90%. The incidence of 60-90%, the incidence of serious block was 100%, only a few hundred kilograms per mu.