甜瓜叶枯病及病原的鉴定

• 作 者: 侯保荣
• 出 处: 石河子农学院学报
• 发表日期: 1984年01期
• 关键词: 甜瓜 甜瓜叶 果实含糖量 叶枯病 近园 Elliott 新病害 石河子垦区 褐色 甜瓜生产

石河子垦区近年在甜瓜植株上发生一种新病害,病菌为害甜瓜叶、蔓、果,以叶片为主,病斑近园形,褐色,边缘水渍状,外缘有退绿晕圈。很多病斑,联接成片,使叶片枯焦,果实含糖量降低,重者,毫无食用价值。因对该病诊断不清,防治不利,病害扩展很快。经鉴定该病系Alternaria cucumerina(Ell.et Ev.)Elliott侵染所致。

Shihezi reclamation area in recent years, melon plants in a new disease, the pathogen damage melon leaves, vine, fruit, leaf-based lesions nearly park-shaped, brown, edge water stains, the outer edge of the retreating green halo. Many lesions, linked into pieces, the leaves Kujiao, fruit sugar content decreased, severe cases, no food value. Due to unclear diagnosis of the disease, prevention and treatment of adverse disease spread rapidly. The disease was identified as Alternaria cucumerina (Ell.et Ev.) Elliott infection.