蚕豆枯萎病是我县棉豆两熟地区蚕豆生长中、后期的主要病害。该病首先从地下部的主根和下部侧根的根尖侵入。到冬季,黄矮植株根部开始发黑,茎基部变为黑褐色。入春后,根系皮层被腐蚀,主根心髓变锈褐色。随着病情加剧,多数侧 Broad bean fusarium wilt is the main disease of mid-and late-stage faba bean in our county cotton bean double ripening area. The disease first invades from the root tips of the root and lower lateral roots of the underground part. In winter, the roots of yellow-dwarf plants begin to darken and the base of the stems turn dark brown. Into the spring, the root cortex is corrosive, the main root marrow rust brown. As the condition gets worse, the majority is on the side