蚕豆赤斑病历年都有不同程度的发生,不过发生迟,为害轻,对产量影响不大。1965年赤斑病是历史上发生面积最大,为害最严重的一年。特点是:发生早、蔓延快、面积广、为害重。2月中旬开始发现,3月中、下旬急速上升,4月上旬暴发,暴发期比往年提早15天左右。 蚕豆遭受赤斑病为害后10天之内,叶片、茎干便变成红色,下部叶片落空,结荚部位上升在45公 Vicia faba over the years have varying degrees of occurrence, but late, harmful to light, little effect on the yield. The year 1965 is the year with the largest area and the worst damage in history. Characteristics are: Occurred early, spread quickly, a wide area, as heavy. Beginning in mid-February, the rapid rise in mid-to-late March and the outbreak in early April was about 15 days earlier than in previous years. Within 10 days after the Vicia faba suffers from the red spot disease, the leaves and stems turn red, the lower leaves fall, the pod site rises by 45