菜豆炭疽病的发生及防治

• 作 者: 冯应军
• 机 构: 酒泉市上坝乡农技站 助理农艺师
• 出 处: 农业科技与信息
• 发表日期: 1994年09期
• 关键词: 菜豆炭疽病 淡红褐色 幼苗子叶 时病 幼苗出土 初侵染 种子检疫 可湿性粉剂 最适温度 病残体

一、症状特点 从幼苗至收获,菜豆地上部各器官都能感染发病。最早发生在幼苗子叶上,幼苗出土后,子叶上部出现红褐色至黑褐色圆形病斑,病部因溃烂而凹陷。胚轴下部产生淡红褐色小斑点和长条病斑,病部凹陷和龟裂,有时病斑相互融合,环

First, the characteristics of symptoms from the seedlings to harvest, beans all organs of the upper body can be infected with the disease. The earliest occurred in seedling cotyledons, seedlings unearthed after the cotyledon appear red brown to dark brown round spots, the diseased part due to ulceration and depression. Lower hypocotyls produce small reddish brown spots and long spots, diseased parts and cracks, and sometimes lesions merge with each other, the ring