黑龙江省呼兰县是我省主要甜菜老产区之一。近几年来,甜菜根病有所蔓延扩大.严重影响甜菜产质量,个别地区已成为甜菜生产发展的严重障碍。一般发病率在15％—20％,个别严重地块高达50％以上,甚至造成绝产、毁种。为了减轻根腐病危害,找到有效的防治措施,我站于1979年开始,连续三年进行了田间大区防治试验。在近几年的生产示范中,初步取得了稳定的防治效果,使甜菜根腐病逐步减轻。 Hulan County, Heilongjiang Province is one of the major beet producing areas in our province. In recent years, the spread of beet root disease has expanded, seriously affecting the yield and quality of sugar beet, and some regions have become serious obstacles in the development of sugar beet production. The general incidence of 15% -20%, individual block as high as 50% or more, or even cause junk, devastating species. In order to mitigate the root rot hazards and find effective prevention and control measures, I started in 1979 and conducted field control trials in three consecutive years. In recent years, production demonstration, initially achieved a stable control effect, the gradual alleviation of beet root rot.