一、症状识别辣椒幼苗感病后,在幼茎基部呈水浸状软腐,病部缢缩,幼苗折倒在地。定植后发病初期为黑褐色针头状小点,以后迅速扩张,形成不凹陷暗绿色病斑,病斑绕茎一周后,上部枝条死亡。叶片受害后,产生暗绿色病斑,并迅速 First, the symptoms Identify pepper seedlings flu, in the young stem base was flooded soft rot, disease shrinking, seedlings fall to the ground. The early onset of colonization was dark brown needle-like dots, after rapid expansion, the formation of dark green spot is not concave spots around the stem after a week, the upper branches of death. After the leaves have been damaged, dark green spots develop and rapidly