芦笋炭疽病(Colletotrichum sp.)是近年山东省临沂、泰安等地芦笋上新发生的病害。该病主要危害芦笋主茎和侧枝,病斑初为椭圆形褐色小点,后渐扩大变为黑褐色。病斑中央略凹陷,轮纹状着生黑褐色小点。茎杆病部易干枯,小枝和拟叶易脱落,导致芦笋早衰,降低产量和品质。作者对该病原菌初步研究结果如下: (一)病原菌的形态和鉴定 切片检查茎杆病斑,可见病原菌突破表皮产生黑褐色分生孢子盘。簇生于盘上的分生孢子梗短、无分 Asparagus anthracnose (Colletotrichum sp.) Is a newly occurring disease on asparagus in Linyi and Tai’an, Shandong Province in recent years. The main hazards of the disease asparagus main stem and collateral, lesion early elliptical brown dots, gradually expanded into a dark brown. Slightly depressed center of the lesion, round grain dark brown spots. Stems easy to dry the Ministry of disease, twigs and leaves are apt to fall off, leading to premature aging of asparagus, reduce yield and quality. The author of the preliminary study of the pathogens are as follows: (A) the morphology and identification of pathogenic bacteria Slices check the stalk lesions, visible pathogenic bacteria break the epidermis to produce dark brown conidia disk. Conidiophores clustered on the disk short, no points