落葵 (潺菜 ,下同 )茎基腐病主要为害小苗或大苗 ,一般小苗受害多。茎基部或茎部染病 ,初期出现红色凹陷斑 ,病健交界处黄色至褐色 ,叶片不萎蔫而不引人注意。当病斑绕茎一周时 ,病部缢缩 ,最后只剩下几根维管束 ,菜苗折倒死亡。菜农常称之为“烂脚病”。引起该病的病原是立枯 Lakui (Tricholoma, the same below) stem rot basically damage seedlings or seedlings, seedlings and more victims. Stem base or stem disease, the initial emergence of red concave spots, sick at the junction yellow to brown, the leaves do not wilt and not noticeable. When the lesion around the stem a week, the disease shrinking, and finally only a few vascular bundles, vegetable seedlings collapsed and died. Vegetable farmers often call it “rotten foot disease.” The cause of the disease is standing dead