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什邡晒烟历史悠久,质地优良,早在清代就畅销全川,驰誉华夏,是我国最大的晒烟产区。1959年最高年出口原烟量达2.9万担,1982年最高年种植面积10.7万亩,总产量高达30.1万担。可是近几年来,病害发生频繁,每隔1—2年,大发病一年,几天时间,产量成倍减少,质量急剧变劣,给烟农造成严重损失。什邡晒烟病害种类繁多,但危害最严重的主要有三大病害:一是花叶病毒病,二是脉斑病,三是灼斑病。群众视为“不治之症”。目前更有加重的趋势,因而加强对晒烟病毒病的研究和综合预防措施的探讨,具有重要意义。
Shifang sun smoke has a long history, good texture, as early as the Qing Dynasty sold Chuan Chuan, Chixia Huaxia, is China’s largest sun-cured tobacco producing areas. In 1959, the highest amount of raw tobacco exported reached 29,000 tons. In 1982, the highest area of cultivated land was 107,000 mu, with a total output of 301,000 tons. However, in recent years, the occurrence of diseases is frequent. Every 1-2 years, a year or a few days after onset of major diseases, the output is doubled and the quality is rapidly deteriorated, causing serious losses to tobacco farmers. There are many kinds of sun-cured tobacco diseases, but the three major diseases are the most serious ones: one is mosaic virus disease, the other is pulse-spot disease and the third is spot blotch disease. The masses as “incurable disease.” At present, there is a growing trend of aggravating trends. Therefore, it is of great significance to strengthen the study of sun-cured virus diseases and to explore comprehensive preventive measures.