一、发生症状发病初期首先从离地面较近的穗轴或小果梗开始,出现淡褐色不规则的水渍状病斑,逐渐向果粒蔓延,果粒发病首先在基部变为淡褐色,软腐,后全粒变褐腐烂,果梗干枯缢缩。 First, the onset of symptoms First of all, from the ground near the cob or small fruiting pedicel began to appear light brown irregular water stain-like lesions, and gradually spread to the fruit, the incidence of fruit first in the base into a light brown, Soft rot, brown rot after the whole grain, dry fruit stem shrinking.