甜菜枯萎病(暂定名)自1957年在吉林省农科院试验地里首次发现以来,近几年已成为吉林省主要甜菜产区常见的一种严重病害,并有逐渐加重趋势。轻者对产质量有较大影响,重者几乎绝产,已成为甜菜生产上急待解决的病害问题。为此,1976年对我省五个县进行发病调查,平均发病率在59.7％。其中严重地块发病率高达98％;1977年调查的十个县平均发病率在36.5％,其中严重地块高达80.1％;1978年调查三个县平均发病率31.3％,其中严重地块高达68％;1983年调查六个县112块甜菜地平均发病率是27.49％,其中严重地块高达96％。甜菜罹病后,一般使甜菜块根减产20—30％,重者达70％以上,产糖量减少20％左右,重者达50％,甚至绝收。从各地调查看,甜菜枯萎病表现的症状均趋一致,其特征是病叶褐变坏死,叶缘向里卷缩。发病初期,叶片自叶缘 Beet wilt disease (tentative name) Since its first discovery in the experimental field of Jilin Academy of Agricultural Sciences in 1957, it has become a common serious disease in the major sugar beet producing areas in Jilin Province in recent years and has gradually increased. Light on the quality of production have a greater impact, in terms of almost absolutely dead, has become a beet production problems to be solved. To this end, in 1976 in our province five counties incidence survey, the average incidence rate of 59.7%. Among them, the incidence rate of serious mass was as high as 98%. The average incidence of ten counties surveyed in 1977 was 36.5%, of which 80.1% were serious. In 1978, the average incidence of three counties was 31.3%, of which 68 %. In 1983, the average incidence of 112 beets in six counties was 27.49%, of which 96% were serious. After beet illness, the general reduction of sugar beet roots by 20-30%, more than 70% of the weight, sugar production decreased by about 20%, heavy up to 50%, or even absolute. From all over the survey, the symptoms of beet wilt disease are consistent, characterized by diseased leaves brown necrosis, the edge of the leaves curled up. Early onset, leaves from the leaf margin